The Account List That Didn't Exist
When Peter Zaffino arrived at AIG in 2017 as the new chief operating officer, he made what any incoming insurance executive would consider a reasonable request: "Get me an account list. I want to see underwriters' names, who performs well, who doesn't — I want to learn from both." The company looked through its systems and discovered that underwriters' names weren't linked to specific policies. Nobody knew who underwrote what in the commercial auto and trucking division. This was not a technology problem or a staffing problem. It was a symptom of something far more severe — an institution that had suffered such catastrophic organizational trauma that it had lost the ability to perform the most basic function of its industry. Underwriting, the act of evaluating risk and pricing it correctly, is the single skill upon which every insurance company's survival depends. AIG had spent a decade failing at it. Between 2009 and 2019, the company hemorrhaged more than $30 billion in cumulative underwriting losses, paying out consistently more in claims than it collected in premiums. And the company couldn't even tell you which humans were responsible.
The missing account list is the kind of detail that sounds like anecdote but is actually diagnosis. It explains, in miniature, how the largest insurance company in American history — a firm that once ranked ninth on the Fortune 500, operated in more than 130 countries, and employed the most feared CEO in global finance — could require a $182 billion government bailout, lose 98% of its market value, become a national symbol of corporate recklessness, repay every dollar with interest, and then spend another decade still unable to underwrite profitably. The story of AIG is not a story of a single catastrophe. It is a story of three distinct companies occupying the same corporate charter across a century: a visionary foreign-markets pioneer built from a two-room office in Shanghai; a colossal financial conglomerate assembled through ruthless acquisitional logic and imperial management; and a stripped-down, technology-deficient property-casualty insurer struggling to remember what it once knew.
By the Numbers
AIG at a Glance
$24BNet premiums written (2024)
200+Countries and jurisdictions served
$182BPeak government bailout commitment (2008)
$0Government balance remaining (repaid 2012)
$30B+Cumulative underwriting losses, 2009–2019
1919Year founded in Shanghai, China
~$46BApproximate market capitalization (2025)
The Spymaster's Insurance Agency
The origin of AIG is unlike the origin of any other major American financial institution. It begins not in New York or Hartford or Omaha but in Shanghai, in 1919, in a two-room office on the Bund, where a 27-year-old Californian named Cornelius Vander Starr established American Asiatic Underwriters. Starr had dropped out of the University of California, Berkeley, sold ice cream in his hometown of Fort Bragg, enlisted in the Army during World War I (he never deployed — the war ended), and then, possessed by what his contemporaries described as an irresistible urge to see the world, took a clerk's job with the Pacific Mail Steamship Company in Yokohama before migrating south to Shanghai. He had no insurance background. What he had was an insight that would prove, across a century, to be the single most durable strategic advantage in the company's history: that the markets Western insurers ignored — Asia, Latin America, the Middle East, postwar Europe — represented not marginal opportunity but the core of a global franchise.
Starr's insight was simple and radical. People in Asia wanted insurance for the same reason people anywhere wanted it — a desire to protect families, to be prudent. The Western insurance establishment, anchored in London and Hartford, viewed these markets as exotic, peripheral, uninsurable. Starr saw the opposite. By 1923 he had hired Nelle Vander Starr — no relation — who became one of the first female insurance executives in the industry. By 1926 he had opened the first U.S. office, American International Underwriters, in New York. By 1937 he had expanded into Latin America through Cuba. The company's growth map reads like an itinerary of twentieth-century geopolitics: China in the 1920s, Latin America in the 1930s, Japan and Germany in 1946 (initially insuring the American military), Brazil in 1949, the United Kingdom in 1953, Australia in 1957, Ireland in 1976.
Starr's wartime biography adds another layer. Declassified intelligence files later revealed that he worked with the Office of Strategic Services — the precursor to the CIA — during World War II while still in China. As journalist Mark Fritz documented in the Los Angeles Times, Starr was part of a remarkable unit of "secret insurance agents" who leveraged global insurance industry intelligence for wartime espionage: "They knew which factories to burn, which bridges to blow up, which cargo ships could be sunk in good conscience." After the war, he hired O.S.S. captain Duncan Lee, a lawyer, as AIG's long-term general counsel. The company's DNA was formed in the liminal space between intelligence-gathering and risk assessment — both, at their root, enterprises of pricing the probability of catastrophe.
When Japan invaded China, Starr relocated his headquarters to New York in 1939. A decade later, as Mao's People's Liberation Army advanced on Shanghai, AIG left China entirely. The company would not return for more than forty years. But the architecture Starr built — a global network of relationships, local-market expertise, and an institutional comfort with operating in places others wouldn't go — would prove to be the foundation upon which his successor would construct an empire.
Starr died in Manhattan on December 20, 1968. His hand-picked successor was already in place.
Hank the Great and Terrible
Maurice Raymond "Hank" Greenberg is one of the most consequential — and divisive — business executives in American history. Born in 1925, he landed on the beaches of Normandy on D-Day and helped liberate Nazi concentration camps, earning a Bronze Star. He returned from the war, earned a law degree, and entered the insurance industry through the bottom. By 1962, at age 37, he was handed leadership of American Home, a small, failing subsidiary within Starr's empire. Over the next four decades, he would transform it into the largest insurance company on Earth.
To understand what Greenberg built, you must first understand how he built it. The early consolidation was crucial. When he became CEO of the newly incorporated American International Group in 1967 (the company went public in 1969 and listed on the NYSE in 1984), the enterprise was a sprawling collection of subsidiaries with numerous minority interests. Greenberg bought them all in, creating a single, focused entity. That decision — eliminating competing incentive structures to create one unified organism — allowed the ruthless capital allocation that followed.
We think alike. If you showed us 10 deals, we would probably come to pretty similar conclusions on most of them.
Greenberg's AIG was, for decades, the better bet even than
Warren Buffett's Berkshire Hathaway. A July 2000
New York Times analysis laid bare the heretical numbers: $10,000 invested in AIG on June 30, 1990 would have grown to $100,300 a decade later, versus $74,700 for the same amount in Berkshire. Over five years, the gap was even wider — $44,100 for AIG versus $23,000 for Berkshire. Both men ran insurance empires. Both saw insurance as fundamentally a business of deploying assets to the greatest possible gain. Both ruled their companies with what the
Times called "imperial authority, in gracious defiance of the conventions of good corporate government." But Greenberg had something Buffett lacked: a willingness to go anywhere, insure anything, and expand into adjacent businesses with an aggression that bordered on recklessness.
And so AIG expanded. Into life insurance through the acquisitions of SunAmerica (1998) and American General (2001) — both purchased at prices that critics, including the sharp-eyed insurance analyst David Merkel, called exorbitant. Into aircraft leasing. Into asset management. Into commodities. Into derivatives. The company that had been primarily a U.S. property-casualty insurer through the late 1980s became, in Greenberg's phrase, a behemoth — big in life and P&C everywhere, plus a dozen adjacent businesses. Revenue exploded. AIG rose to number nine on the Fortune 500. By 2004 it was the eighteenth largest company in the world.
But Greenberg's genius contained the seed of AIG's destruction. He ran risk management personally. Not institutionally. Personally. As David Merkel observed in his review of
The AIG Story: "Risk control should be institutionalized, not personalized. That was Greenberg's fault. No one man should be in charge of risk for a whole company." When Greenberg was ousted in 2005 — forced out amid an investigation by New York Attorney General Eliot Spitzer into accounting irregularities — the risk controls went with him. The organism that had been disciplined by a single, fierce intelligence was suddenly an organism without a brain.
The Unit Nobody Regulated
The division that destroyed AIG was called AIG Financial Products, or AIGFP. It was not an insurance company. It was not regulated as one. It existed in a regulatory blind spot — what Sullivan & Cromwell partner Rodgin Cohen later called "an orphan in terms of regulation." Insurance, Cohen noted, "tends to be very well regulated, particularly the big states have very strong insurance commissioners." But AIGFP wasn't part of any insurance subsidiary. It was a holding-company-level derivatives operation, and in the deregulatory climate of the late 1990s and early 2000s, nobody was watching it.
What AIGFP did was sell credit default swaps — a form of insurance against defaults in credit contracts, particularly the complex mortgage-backed securities that were proliferating throughout the financial system. The logic seemed elegant: AIG's triple-A credit rating meant it could write this insurance cheaply, and the fees were enormous. As long as the housing market didn't collapse, AIGFP would collect premiums forever. The business grew to gargantuan scale. By 2008, AIGFP had written hundreds of billions of dollars in notional exposure, mostly on pools of mortgage-backed securities.
The problem was not just concentration. It was correlation. Subprime and other mortgage risk had metastasized through the entire AIG organism — not just in AIGFP's credit default swaps but in the investment portfolios of the life insurance companies, in securities lending operations, in direct lending, and in mortgage insurance. When the housing bubble burst and the financial crisis peaked in September 2008, AIG couldn't come up with the money it suddenly owed. The counterparties demanding payment were the largest financial institutions in the world. If AIG failed to pay, those institutions would have been forced to reappraise the value of the securities they held, triggering a cascade of write-downs across the global financial system.
It would have been a chain reaction. The spillover effects could have been incredible.
The policymakers who were supposed to see this coming didn't. Phil Angelides, chair of the Financial Crisis Inquiry Commission, later testified that regulators "only come to grips with the extent of the challenges and the problems days before its imminent collapse." It was the Friday night before the Lehman Brothers bankruptcy — September 12, 2008 — that the depth of AIG's crisis fully registered. The following Tuesday, September 16, the Federal Reserve reversed course and agreed to an $85 billion rescue, taking a 79.9% equity stake in the company. It was the most radical intervention in private business in the Fed's history.
Representative Barney Frank captured the political surreality of the moment. "The secretary and the chairman of the Fed, two Bush appointees, came down here and said, 'We're from the government, we're here to help them,'" he recalled. When Frank asked Fed Chairman Ben Bernanke whether he had $85 billion, Bernanke responded: "I've got $800 billion." Under a Depression-era statute, the Fed could lend to any entity in America as long as the loan was adequately collateralized. Few people, including Frank himself, had been fully familiar with that authority.
One Hundred and Eighty-Two Billion Dollars
The initial $85 billion was not enough. The government's commitment to AIG ultimately swelled to approximately $182 billion — a sum so staggering it remains the largest corporate bailout in American history. The rescue was structured across multiple vehicles: direct equity injections, revolving credit facilities, and special-purpose vehicles set up by the Federal Reserve Bank of New York, including the now-infamous Maiden Lane II and Maiden Lane III, which absorbed toxic mortgage-backed securities from AIG's balance sheet.
The public fury was immediate and unrelenting. AIG became the most hated company in America. The anger crystallized around a single, almost comically tone-deaf detail: in March 2009, it emerged that AIG had paid more than $165 million in retention bonuses to employees of AIGFP — the very division that had precipitated the collapse. Eleven of the 73 employees who received bonuses of $1 million or more no longer even worked at the company. The top individual bonus exceeded $6.4 million. Employees received death threats. President Obama urged that "every legal avenue be pursued" to block the payments. Congressional Democrats issued an ultimatum: return the money or watch us tax it away. New York Attorney General Andrew Cuomo noted that the bonus contracts had been written in March 2008, guaranteeing employees 100% of their 2007 bonus amounts for 2008 — "despite obvious signs that 2008 performance would be disastrous in comparison to the year before."
Key dates in the government rescue of AIG
Sep 2008Federal Reserve extends initial $85B credit facility; government takes 79.9% equity stake
Nov 2008Bailout restructured; commitment grows to ~$150B including Maiden Lane II and III vehicles
Mar 2009$165M AIGFP retention bonus scandal erupts; total government commitment reaches ~$182B
Oct 2010AIA Group IPO in Hong Kong raises $17.8B — largest IPO globally at that time
Mar 2012AIG raises $6B by reducing AIA stake; Treasury begins selling AIG common shares
Dec 2012U.S. Treasury sells final AIG shares; government recoups full investment plus ~$22.7B profit
By the end of 2008, AIG had lost 98% of its market value. Some 20,000 employees departed or were laid off in the immediate aftermath. The company that Cornelius Vander Starr had built from a two-room office in Shanghai, that Hank Greenberg had expanded into the world's largest insurer, was now a ward of the state — its survival dependent on the willingness of American taxpayers to absorb the consequences of risk decisions made by a derivatives unit that most of those taxpayers had never heard of.
The Croatian Vineyard and the Bastille Day Boardroom
Into this wreckage walked Bob Benmosche. It was 2009, and the former MetLife CEO was called out of retirement — he was enjoying his sun-swept villa in Croatia — to become AIG's fifth CEO in as many years. Few believed taxpayers would ever get their money back. The challenge was not merely financial; it was existential. AIG's workforce had been demoralized by public hatred, congressional scrutiny, and the departure of institutional knowledge. The brand was toxic.
Benmosche was, by all accounts, a force of nature — combative, profane, and utterly unwilling to manage by consensus. His tenure featured continuous conflict with the U.S. Congress, with his own board, and especially with his board chairman, Harvey Golub, the former American Express CEO. The tension between Benmosche and Golub became one of the most dramatic corporate governance showdowns of the era. Benmosche felt Golub involved himself too deeply in management decisions. Golub complained Benmosche made major strategic calls without consulting the board. The conflict reached its climax on July 14, 2010 — Bastille Day, as Benmosche noted with dry amusement.
At a board meeting on the 18th floor of 70 Pine Street, Benmosche delivered an ultimatum. He walked the directors through every change he'd made since becoming CEO — the effort to restore workforce morale, the battles with government pay czar Kenneth Feinberg over compensation, the clawback of bonus money, the improving situation with AIGFP, the sale of the American Life Insurance Company — and then declared, in effect, that either Golub left or he did. Jim Millstein, the restructuring expert recruited by the Obama administration, was present. "We had the most dramatic board meeting of my career," Millstein later said. "I've never seen anything like it."
Golub departed. Benmosche stayed. Over the next four years, he downsized AIG, returned it to profitability, and — remarkably — repaid the government in full, plus interest. The repayment was completed by December 2012. The U.S. Treasury ultimately earned approximately $22.7 billion in profit on the AIG investment. AIG ran a public relations campaign thanking the American taxpayer. It was, depending on your perspective, either a gracious acknowledgment or a breathtaking act of chutzpah.
Benmosche died of cancer on February 27, 2015. His posthumous memoir, written with Peter Marks and Valerie Hendy, captured the full intensity of his tenure. But the deeper truth of Benmosche's era is that repaying the government, however astonishing, did not actually fix AIG. It fixed the balance sheet. The operating business — the thing that's supposed to underwrite risk profitably — remained broken for years to come.
The Decade of Losing Money on Purpose
The most overlooked fact in AIG's story is this: the company lost more than $30 billion in cumulative underwriting losses between 2009 and 2019. A full decade. This means that for ten consecutive years after the bailout, AIG was consistently paying out more in claims than it was collecting in premiums. It was, in the most fundamental sense, failing at its core job.
How does an insurance company lose money underwriting for a decade? Several overlapping pathologies. First, the post-crisis desperation to retain market share led to aggressive pricing — AIG was writing policies at rates that didn't adequately compensate for the risk. Second, the company's technology infrastructure was, to put it diplomatically, catastrophic. When Peter Zaffino arrived in 2017 and asked for basic underwriting data, the system couldn't produce it. Accenture CEO
Julie Sweet, whose firm later partnered with AIG on a massive transformation initiative, relayed what her chief technology officer told her after examining AIG's systems: "You have not just the worst tech in the industry, but it may be in the top three he has ever seen." Third, the organizational exodus — 20,000 people lost after the crisis, and many more in subsequent years — had stripped the company of institutional knowledge. Experienced underwriters who understood how to price complex risks had simply left.
The parade of leadership didn't help. After Benmosche, the company cycled through Peter Hancock (2014–2017) and then Brian Duperreault (2017–2021). Duperreault, a respected industry veteran, brought in more than a dozen senior executives and 125 senior underwriters — many of them AIG alumni returning — to try to rebuild underwriting discipline from the ground up. He also acquired Hamilton USA (rebranded to Blackboard) for $110 million, a bet on integrating data science and machine learning into commercial insurance underwriting. But the cultural damage ran deep, and the technology deficit was not something that could be fixed with a few hires.
The Zaffino Machine
Peter Zaffino's path to the CEO office was paved through a very specific corner of the insurance world — the intermediary side. Boston College undergraduate, NYU Stern MBA in finance, then a career at GE Capital specializing in alternative risk reinsurance before moving to Marsh & McLennan, where he ran Guy Carpenter (one of the world's leading reinsurance brokers) and then Marsh itself, the world's largest insurance broker. He was, in other words, a person who had spent decades studying how insurance companies operated from the outside — watching their underwriting decisions, seeing which ones priced risk well and which ones didn't, understanding the entire value chain from broker to underwriter to reinsurer. When he arrived at AIG in 2017 as COO, he was not bringing an insider's blind spots. He was bringing the broker's eye: cold, comparative, unsentimental.
What Zaffino saw was worse than he expected. The account list that didn't exist was just the surface. The technology was pre-digital. The underwriting data was balkanized. The organizational structure was bloated. And the fundamental underwriting philosophy — if you could even call it that — was to pursue volume at the expense of profitability, a hangover from the post-crisis desperation to prove the company still had market relevance.
Zaffino became CEO in 2021 and Chairman in 2022. His approach was methodical, almost surgical. He attacked multiple dimensions simultaneously: underwriting discipline (imposing accountability, linking underwriter names to policies, culling unprofitable books of business), technology (the Accenture partnership, which began after a serendipitous meeting with Julie Sweet in December 2019), organizational restructuring (6,000 AIG employees became Accenture employees en masse — "the most people we've ever taken on at one time," Sweet said), and portfolio simplification.
The simplification was perhaps the boldest move. AIG had been a sprawling conglomerate for decades — property-casualty, life insurance, retirement services, asset management, and numerous other operations. Zaffino's answer was to strip the company back to its core. In 2022, AIG's life and retirement business unit, Corebridge Financial, began publicly trading as a separate company on the New York Stock Exchange. The divestiture was massive — AIG was, in effect, shedding an entire industry vertical to focus on what it knew (or needed to relearn): general insurance. The company has been progressively reducing its stake in Corebridge ever since.
In an environment that has never been more dynamic or complex, AIG is at the forefront of originating risk solutions. The expertise and support we provide enables businesses, institutions and individuals to overcome uncertainty and withstand challenges.
The results have been measurable. By 2025, wall Street analysts from Keefe, Bruyette & Woods were declaring a "turnaround fully underway." Barclays analyst Tracy Benguigui cited AIG's "strong underwriting acumen." In Q2 2025, AIG reported a $1.1 billion profit, reversing a $4 billion loss a year earlier (the prior-year loss was driven largely by the Corebridge divestiture accounting). Adjusted after-tax income rose 56% year over year. Earnings per share of $1.81 beat consensus estimates of $1.60. Revenue of $6.88 billion surpassed expectations. The company that couldn't link an underwriter's name to a policy in 2017 was, eight years later, beating Wall Street's numbers.
The Art of Strategic Reinvestment
But Zaffino's ambitions extend beyond fixing what was broken. In late 2025, AIG announced two deals that signaled a fundamentally different posture — not defensive restructuring but offensive capital deployment. The first was a $2 billion acquisition deal with reinsurance company Everest Group. The second, and more revealing, was a nearly $5 billion multifaceted investment in specialty insurer Convex Group and asset manager Onex Corporation.
The Convex deal's architecture is worth studying. AIG committed an initial $2.2 billion for a 35% stake in Convex, a London-based specialty insurer founded in 2019 that had grown rapidly to more than $5 billion in premiums. Convex's combined ratio — the key profitability metric measuring how efficiently an insurer runs its core underwriting business — was 87.6%, nine percentage points better than the overall U.S. P&C industry average. Its return on equity was 17%, placing it in the top quartile of global reinsurers. Simultaneously, AIG invested approximately $640 million for a 9.9% stake in Onex, Convex's majority shareholder. Over the next three years, AIG will deploy an additional $2 billion into Onex's investment funds.
The deal structure reveals Zaffino's theory of the case: AIG doesn't just want underwriting exposure. It wants to participate in the full capital-formation ecosystem — underwriting profits through a quota-share reinsurance agreement with Convex, equity appreciation through minority stakes, and investment returns through fund commitments. It is a play to transform AIG from a legacy insurer into what Fortune described as "a more dynamic, capital-aligned institution."
Return to Shanghai
There is a poetic circularity to AIG's story that the company itself seems aware of. In 1992, the People's Republic of China granted AIG a license to operate a life and non-life insurance business in Shanghai — the first foreign insurer granted such a license in over forty years. It was a homecoming of sorts, a return to the city where Cornelius Vander Starr had opened his two-room office seven decades earlier. The relationship between AIG and China was not incidental to either party's history. It was foundational. Greenberg himself served as chairman of the Asia Society, as vice chairman of the National Committee on United States-China Relations, and as a member of the U.S.-China Business Council. The C.V. Starr Foundation, created by the company's founder in 1955, became one of the largest private foundations in the United States, with deep ties to Asian philanthropy and cultural exchange.
Key milestones in a century of international expansion
1919Cornelius Vander Starr founds American Asiatic Underwriters in Shanghai
1926First U.S. office opens in New York City
1939Headquarters relocate from Shanghai to New York amid Japanese invasion
1946Offices open in Japan and Germany to insure the U.S. military
1967American International Group, Inc. incorporates in Delaware
1992China grants AIG first foreign insurance license in 40+ years
1999AIG launches one of the industry's first cybersecurity insurance programs
2001
The network that Starr built and Greenberg expanded — operating across 200+ countries and jurisdictions — remains the company's most distinctive asset, the one structural advantage that survived the crisis, the bailout, the leadership chaos, the technology rot, and the decade of underwriting losses. Competitors can match AIG's underwriting talent, its technology, even its capital. Matching its geographic footprint and the institutional relationships accumulated across a century of operating in markets that other insurers avoided — that is a different order of difficulty entirely.
The Company That Was Three Companies
The tension that defines AIG — the thread that runs from Starr's Shanghai office through Greenberg's empire through the AIGFP disaster through the Zaffino rebuild — is the tension between scope and discipline. Every great era in the company's history was an era of expansion: into new geographies, into new product lines, into new financial instruments. And every crisis was a crisis of overreach: the life insurance acquisitions that flattened the stock price from 1999 to 2007, the derivatives exposure that nearly destroyed the global financial system, the underwriting indiscipline that bled $30 billion over a decade.
Zaffino's bet is that AIG can be disciplined and expansive simultaneously — that the Convex investment, the Everest deal, the global network, the three-segment structure (35% International Commercial, 35% North America Commercial, 30% Global Personal) can coexist with the kind of underwriting rigor that was absent for most of the post-crisis period. The early evidence is encouraging. Whether the evidence compounds over a full insurance cycle — through the next catastrophe year, the next market dislocation, the next temptation to chase premium volume at the expense of underwriting quality — remains the open question.
For readers seeking the full narrative of AIG's arc, two books provide complementary perspectives.
Fallen Giant: The Amazing Story of Hank Greenberg and the History of AIG focuses on the development of AIG under its founder, Cornelius Vander Starr, and the rise of Greenberg's empire, offering the deepest look at how the company's culture was forged.
The AIG Story, co-authored by Greenberg himself with professor Lawrence Cunningham, is an insider's account — partial and self-serving in places, as such accounts always are, but uniquely revealing about the operating philosophy and international strategy that made AIG what it was.
The company today writes $24 billion in net premiums annually. It operates across 200+ countries and jurisdictions. Its three segments are roughly balanced. Its CEO came from the brokerage side, bringing the assessor's eye rather than the underwriter's ego. And somewhere in its systems, a database now links every underwriter's name to every policy they've written — the most basic requirement of an insurance company, and the thing that, for the better part of a decade, AIG couldn't do. The account list exists now. What gets built on top of it will determine whether AIG's next century looks more like Starr's or like AIGFP's.
AIG's century-long journey — from a two-room agency in colonial Shanghai to the largest bailout in American history to a leaner, more disciplined general insurer — offers a set of operating principles that are less about what to do and more about what happens when you stop doing the thing that made you great, and what it takes to relearn it.
Table of Contents
- 1.Go where they won't.
- 2.Consolidate before you conquer.
- 3.Institutionalize the genius or lose it.
- 4.The complement you don't understand will kill you.
- 5.Underwriting discipline is the product.
- 6.Never let the balance sheet obscure the operating business.
- 7.Strip to the core before you rebuild.
- 8.Fix the plumbing before you fix the strategy.
- 9.Hire the assessor, not the optimist.
- 10.Deploy capital across the ecosystem, not just the balance sheet.
Principle 1
Go where they won't.
Cornelius Vander Starr's foundational insight — that the markets Western insurers ignored represented the greatest opportunity — created a century of competitive advantage. By 1946, AIG was insuring the U.S. military in occupied Japan and Germany. By 1992, it was the first foreign insurer licensed in China in over forty years. This geographic arbitrage, going to markets that established competitors dismissed as too exotic, too risky, or too small, created a global network that eventually spanned 200+ countries and jurisdictions. No competitor has replicated this footprint.
The key was not merely presence but timing. Starr entered markets before they were obviously attractive — insuring in China in the 1920s, expanding into Latin America during the Depression, returning to Asia during the postwar chaos. Each entry point looked contrarian at the time and obvious in retrospect.
Benefit: First-mover advantage in emerging markets creates relationships, regulatory goodwill, and local knowledge that compound over decades. AIG's network became its most durable moat — the one asset that survived every corporate crisis.
Tradeoff: Operating in 200+ jurisdictions creates staggering complexity. It makes underwriting discipline harder to maintain, technology harder to standardize, and risk harder to aggregate. The same geographic breadth that made AIG great also made it ungovernable when leadership failed.
Tactic for operators: Identify the markets or customer segments that your competitors have dismissed as too small, too difficult, or too foreign. Enter them early and with commitment — not as experiments but as strategic positions. The moat compounds with time, but only if you stay long enough for the compound interest to work.
Principle 2
Consolidate before you conquer.
One of Hank Greenberg's first major decisions as CEO was buying out all minority interests in AIG's subsidiaries, creating a single unified entity. Before that consolidation, the Starr empire was a collection of affiliates with competing incentive structures. Greenberg understood that you cannot impose capital allocation discipline across an organization when parts of that organization answer to different shareholders.
Why Greenberg's first move was structural, not strategic
| Before Consolidation | After Consolidation |
|---|
| Multiple minority interests with different incentives | Single shareholder base, unified capital allocation |
| Subsidiaries optimized locally | Enterprise optimized globally |
| Conflicting reporting standards | One set of books, one risk framework |
Benefit: Unified ownership enables ruthless prioritization. Greenberg could move capital from underperforming units to high-return opportunities without negotiating with minority shareholders or managing competing board interests.
Tradeoff: Eliminating minority interests concentrates all risk. When AIG's core risk management failed in 2008, there were no subsidiary-level circuit breakers to contain the damage.
Tactic for operators: Before pursuing expansion, ensure your organizational structure supports centralized decision-making. Minority interests, joint ventures, and autonomous business units create friction that compounds with scale. Consolidate ownership and governance first, then allocate capital aggressively.
Principle 3
Institutionalize the genius or lose it.
Hank Greenberg personally managed AIG's risk. He was the risk committee. When he was forced out in 2005, the risk controls departed with him. The result, three years later, was the largest corporate bailout in American history. This is the clearest case study in modern business of the danger of personalized rather than institutionalized capability.
The lesson is not that Greenberg was wrong to be hands-on. For decades, his personal oversight produced superior returns — AIG outperformed Berkshire Hathaway over meaningful periods. The lesson is that any capability that resides in a single individual, no matter how brilliant, is a latent catastrophe. The moment that individual is removed — by board action, by health, by death — the capability vanishes.
Benefit: Institutionalizing core capabilities (risk management, underwriting standards, strategic decision-making) creates organizational resilience that survives leadership transitions.
Tradeoff: Institutionalization can calcify into bureaucracy. The genius-leader model is faster, more adaptive, and more accountable in the short term. The tension between institutional process and individual brilliance has no permanent resolution.
Tactic for operators: Audit your organization for capabilities that exist in a single person's head. For each one, ask: if this person leaves tomorrow, does this capability survive? If the answer is no, begin building institutional frameworks — documented processes, training programs, decision-making committees — while the genius is still available to contribute.
Principle 4
The complement you don't understand will kill you.
AIG Financial Products was not an insurance operation. It was a derivatives trading desk that happened to sit inside an insurance holding company. AIG's leadership understood insurance. They did not deeply understand the credit default swap market, the correlation risk in mortgage-backed securities portfolios, or the liquidity demands that would materialize if housing prices declined nationwide simultaneously. AIGFP was, as multiple regulators later testified, "an orphan in terms of regulation" — regulated neither as insurance nor as banking.
The broader lesson applies beyond derivatives. AIG's life insurance acquisitions (SunAmerica, American General) were also complements that Greenberg, a P&C specialist, didn't fully understand. Both were purchased at premium valuations, and their integration contributed to AIG's flat stock price from 1999 to 2007.
Benefit: Expanding into adjacent businesses can create diversification and new revenue streams. Insurance and derivatives are conceptually related — both involve pricing contingent liabilities.
Tradeoff: Adjacency creates an illusion of understanding. The P&C executive who thinks he understands derivatives because both involve "risk" is making the same error as the software engineer who thinks she understands hardware because both involve "computers." The details are everything.
Tactic for operators: When expanding into adjacent businesses, apply disproportionate scrutiny to the areas where your existing expertise breaks down. Hire senior leaders from the new domain and give them genuine authority — not advisory roles. And never assume that your existing risk framework covers a business whose fundamental dynamics differ from your core.
Principle 5
Underwriting discipline is the product.
For an insurance company, underwriting discipline is not a nice-to-have. It is the product itself. AIG's decade of $30 billion in underwriting losses (2009–2019) demonstrates what happens when this discipline breaks down. The company was, in the most literal sense, selling a product below cost for ten consecutive years.
The causes were multiple — post-crisis desperation to retain market share, loss of experienced underwriters, technology systems that couldn't track performance at the individual level — but the root cause was cultural. AIG had lost the institutional belief that saying "no" to unprofitable business was more valuable than saying "yes" to premium volume.
Benefit: Underwriting discipline creates a virtuous cycle: profitable pricing leads to better reserves, which leads to financial stability, which leads to higher credit ratings, which leads to lower cost of capital, which enables competitive pricing on the best risks.
Tradeoff: Discipline means walking away from revenue. In the short term, competitors willing to underprice risk will win market share. The insurer who maintains discipline looks like a fool — until the catastrophe year.
Tactic for operators: In any business where pricing a product or service below cost is tempting for volume reasons, install structural guardrails against the temptation. Link individual performance to profitability metrics, not volume metrics. Make the data transparent. As Zaffino learned at AIG, you cannot improve what you cannot measure — and you cannot measure what your systems don't track.
Principle 6
Never let the balance sheet obscure the operating business.
AIG's ability to repay $182 billion to the U.S. government masked a deeper problem: the operating business was still losing money. The repayment came primarily from asset sales — the AIA Group IPO in Hong Kong raised $17.8 billion alone — and from capital markets transactions, not from profitable operations. The balance sheet was healing while the P&L was bleeding.
This is a recurring pattern in financial services, where the scale of the balance sheet can make even large operating losses seem manageable. An investor looking at AIG in 2013 might have concluded the turnaround was complete: government repaid, stock recovering, headline assets enormous. The underlying reality — a decade of underwriting losses still ahead — was hidden beneath the surface.
Benefit: Maintaining clarity about operating performance (as distinct from balance sheet management) prevents the dangerous complacency that comes from believing a turnaround is complete when it has barely begun.
Tradeoff: Operating metrics can themselves be misleading during periods of rapid restructuring. The discipline of separating operating performance from capital transactions adds analytical complexity.
Tactic for operators: Develop a small number of "unfudgeable" operating metrics that reflect the true health of your core business, independent of capital structure, M&A activity, or one-time items. For AIG, this metric was the combined ratio. For your business, it might be unit economics on new customer cohorts or gross margin on recurring revenue. Report it internally with the same visibility as headline revenue.
Principle 7
Strip to the core before you rebuild.
The Corebridge Financial spinoff in 2022 — separating AIG's entire life insurance and retirement business into an independently traded entity — was the defining structural decision of the Zaffino era. It acknowledged something that AIG had resisted for decades: the company had become too complex to manage well. The conglomerate structure that Greenberg had built was, in the post-crisis world, a liability rather than an asset.
Stripping to the core required courage. Corebridge represented roughly 30% of AIG's revenue base. Spinning it off meant AIG would be a smaller, simpler, more focused company — but one that could actually be managed with the discipline its core P&C business demanded.
Benefit: Focus enables accountability. A leaner AIG can invest disproportionately in underwriting talent, technology, and the specific capabilities that drive P&C profitability. Management attention — the scarcest resource in any organization — is no longer divided across fundamentally different businesses.
Tradeoff: Diversification has genuine value, especially for insurance companies whose liabilities are inherently volatile. A combined P&C and life insurer has natural hedging properties. Spinning off Corebridge eliminated that diversification.
Tactic for operators: Ask whether your conglomerate structure genuinely creates value through synergies — or whether it merely persists because splitting it up is painful. The test: would an independent buyer pay more for each piece separately than the market currently values the whole? If so, the conglomerate discount is destroying shareholder value.
Principle 8
Fix the plumbing before you fix the strategy.
When Accenture's CTO examined AIG's technology infrastructure, his assessment was blunt: "not just the worst tech in the industry, but it may be in the top three he has ever seen." The Accenture partnership, which began in late 2019 and eventually involved 6,000 AIG employees becoming Accenture employees, was fundamentally a plumbing fix — new digital workflows, technology transformation, data infrastructure that could actually support underwriting decisions.
This is unglamorous work. It generates no headlines. But without it, no strategic initiative — no matter how brilliant — can execute. The missing account list was a technology failure. The decade of underwriting losses was, in significant part, a data failure. You cannot impose underwriting discipline if your systems cannot tell you which underwriter wrote which policy.
Benefit: Technology infrastructure that works creates compounding advantages: better data enables better pricing, which enables better profitability, which funds further technology investment.
Tradeoff: Infrastructure investments take years to pay off and are extremely expensive. The Accenture partnership was a multibillion-dollar commitment. During the transformation period, organizational disruption is enormous — 6,000 employees changing employers is not a minor HR event.
Tactic for operators: Before investing in growth strategy, honestly assess whether your operational infrastructure can support the strategy you already have. The most common reason strategies fail is not that the strategy is wrong but that the execution infrastructure cannot support it. Fix the plumbing first. It's boring. It works.
Principle 9
Hire the assessor, not the optimist.
Peter Zaffino spent decades on the brokerage side of insurance — at Guy Carpenter, at Marsh — before coming to AIG. Brokers are, by professional necessity, assessors. They evaluate risk from the outside, compare underwriters, and see which companies price well and which don't. They have no institutional loyalty to any single insurer's book of business. They are, in a sense, professional skeptics.
This perspective proved decisive at AIG. An insider might have been more sympathetic to the company's existing practices, more willing to explain away the underwriting losses as legacy issues. Zaffino saw them as systemic failures requiring systemic change.
Benefit: Leaders who come from adjacent industries or complementary roles (brokers, analysts, consultants) bring an evaluative perspective that insiders lack. They see waste and dysfunction that insiders have normalized.
Tradeoff: Outsiders can undervalue institutional knowledge and relationships. Zaffino's rebuilding required significant talent churn — some of which may have been premature.
Tactic for operators: When selecting turnaround leadership, prioritize candidates who have evaluated your industry from the outside. The broker, the consultant, the analyst — these professionals develop pattern recognition across multiple companies that internal operators rarely possess.
Principle 10
Deploy capital across the ecosystem, not just the balance sheet.
The Convex/Onex deal structure — minority equity stakes in an insurer and its asset management parent, plus a quota-share reinsurance agreement, plus fund commitments — represents a new model for how a large insurer can generate returns. Rather than simply writing policies and investing the float, AIG is positioning itself to earn underwriting profits, equity appreciation, investment management returns, and reinsurance income from a single relationship.
This is, in some ways, a return to the Greenberg-era ambition of participating in multiple layers of the insurance value chain — but with far more discipline in terms of governance (minority stakes, not full ownership) and risk management (quota-share agreements, not balance-sheet guarantees).
Benefit: Ecosystem investing creates multiple, uncorrelated return streams from a single relationship. It also builds strategic alignment — Convex and AIG now have shared economic interests that reinforce both parties' incentives.
Tradeoff: Complexity. Multi-layered deals require sophisticated monitoring, and the embedded leverage (equity + reinsurance + fund commitments) can amplify losses in a downturn. Minority stakes also mean limited governance control.
Tactic for operators: Instead of acquiring businesses outright, consider structured partnerships that give you economic exposure across multiple return drivers — equity appreciation, operating profits, and fee income — while limiting governance complexity and downside concentration.
Conclusion
The Discipline That Must Be Relearned
The ten principles above converge on a single, uncomfortable truth: the qualities that make a company great and the qualities that sustain it are not the same. Starr's visionary geographic expansion, Greenberg's ruthless acquisitional logic, AIGFP's financial engineering — each created value for a time, and each, unchecked, became the source of catastrophe. The discipline required to maintain greatness is less glamorous than the audacity required to achieve it. It involves account lists and technology upgrades and combined ratios and the willingness to walk away from premium volume.
Zaffino's AIG is a bet that discipline can coexist with ambition — that a company stripped to its core, rebuilt from the plumbing up, and led by an assessor rather than an empire-builder can compete with both the giants and the insurgents. The early returns are promising. But AIG has been promising before. The insurance cycle is long, and catastrophes — financial, natural, geopolitical — arrive on their own schedule. The account list exists. The question is whether the institution has finally learned to read it.
Part IIIBusiness Breakdown
The Business at a Glance
Vital Signs
AIG in 2025
$24BNet premiums written (2024)
200+Countries and jurisdictions
~$46BApproximate market cap
3Operating segments
$1.81Q2 2025 EPS (vs. $1.60 consensus)
$6.88BQ2 2025 revenue (beat estimates)
+56%Adjusted after-tax income YoY growth (Q2 2025)
AIG today is a fundamentally different entity than the conglomerate that required a $182 billion bailout. Under Peter Zaffino's leadership, the company has shed its life insurance and retirement business (Corebridge Financial), reduced risk exposure by over $1 trillion, and refocused on its core identity as a global general insurance organization. The three operating segments — North America Commercial (35% of net premiums), International Commercial (35%), and Global Personal (30%) — reflect a deliberately balanced portfolio across geographies and customer types. The company serves clients through a network spanning approximately 200 countries and jurisdictions, offering property, casualty, liability, financial lines, specialty, crop risk services, personal lines, and accident & health products.
The turnaround is real but young. AIG's improved underwriting results, technology modernization, and strategic capital deployment have convinced most Wall Street analysts that the trajectory has shifted. The challenge now is proving that the discipline holds across a full insurance cycle — including catastrophe years and competitive pricing pressure.
How AIG Makes Money
AIG's revenue model is built on two fundamental mechanisms: underwriting income (the profit or loss from writing insurance policies) and investment income (the returns generated by investing policyholder premiums — the "float" — before claims are paid).
Primary revenue streams and their characteristics
| Revenue Stream | Description | Key Metric |
|---|
| North America Commercial | Commercial P&C insurance for U.S. and Canadian businesses — liability, financial lines, property, specialty | ~35% of NPW |
| International Commercial | Same product suite across global markets; strong in Asia, Europe, Middle East | ~35% of NPW |
| Global Personal | Personal lines, accident & health, travel insurance for individuals worldwide | ~30% of NPW |
| Net Investment Income | Returns on float — fixed income, alternatives, and equity investments | Major P&L contributor |
| Corebridge Residual | Income from remaining stake in Corebridge Financial (being divested) |
The crucial metric in insurance is the combined ratio — total losses and expenses divided by premiums earned. A combined ratio below 100% means the insurer is making money on its underwriting operations; above 100% means it's losing money and relying on investment income to generate profit. AIG's combined ratio has been improving steadily under Zaffino, moving from deeply unprofitable territory (the decade of $30B+ in underwriting losses) toward competitive industry levels. Convex's 87.6% combined ratio — the standard AIG is now benchmarking against through its investment partnership — represents best-in-class performance.
The company also generates revenue from its global specialty lines, including one of the industry's first cybersecurity insurance programs (launched in 1999), crop risk services, and niche products like travel insurance (through its 2006 acquisition of Travel Guard) and reinsurance (through its 2018 acquisition of Validus Holdings).
Competitive Position and Moat
AIG operates in the global property-casualty insurance market, one of the most competitive and fragmented industries in the world. Its principal competitors include Chubb (the largest publicly traded P&C insurer by market capitalization), Zurich Insurance Group, Allianz, Berkshire Hathaway's insurance operations, Liberty Mutual, and a growing set of specialty and insurtech competitors.
AIG's competitive advantages and their durability
| Moat Source | Evidence | Durability |
|---|
| Global network (200+ jurisdictions) | Century of accumulated local relationships, regulatory licenses, operating infrastructure | Strong |
| Product breadth | Full-spectrum P&C offering: liability, financial lines, property, specialty, personal, A&H | Strong |
| Brand / institutional relationships | Longstanding relationships with major brokers, multinational corporates, governments | Moderate |
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The geographic network is the most defensible moat. Building an insurance operation in 200+ countries from scratch would take decades and require billions in licensing, staffing, and relationship development. Competitors like Chubb and Zurich have strong international networks but none match AIG's breadth, particularly in emerging markets where the Starr-era first-mover advantages persist.
Where the moat is weakest: AIG's brand remains damaged among general audiences from the 2008 crisis, though corporate buyers (who purchase insurance based on coverage quality and pricing, not brand sentiment) have largely moved past it. The company's technology advantage is nascent — the Accenture transformation has improved capabilities but competitors like Chubb have invested in digital underwriting for far longer. And the underwriting discipline that drives profitability is, by its nature, a perishable advantage. It can erode in a single pricing cycle if management loses focus.
The Flywheel
AIG's competitive flywheel, when functioning properly, operates as follows:
How underwriting discipline creates compounding advantage
| Step | Mechanism |
|---|
| 1. Underwriting Discipline | Rigorous risk selection and pricing produces profitable combined ratios |
| 2. Profitable Float | Premiums collected exceed claims paid, generating "free" capital to invest |
| 3. Investment Returns | Float invested in fixed income, alternatives, and strategic assets generates additional income |
| 4. Capital Strength | Combined underwriting + investment income builds surplus capital and strengthens credit ratings |
| 5. Competitive Pricing Power | Strong capital base and ratings enable competitive pricing on the most attractive risks — attracting better clients with lower loss rates |
| 6. Reinvestment | Profits reinvested in technology, talent, and strategic partnerships (Convex/Onex) accelerate the cycle |
The flywheel was broken for a decade because Step 1 failed — underwriting discipline collapsed, producing losses rather than profits, which drained capital rather than building it. Zaffino's entire turnaround strategy is an effort to restart this cycle from the top. The improving Q2 2025 results — EPS of $1.81 beating $1.60 consensus, adjusted after-tax income up 56% — suggest the flywheel is beginning to spin again. The Convex investment adds a parallel flywheel: AIG earns from Convex's underwriting through the quota-share agreement, from Convex's equity appreciation through the 35% stake, and from Onex's investment returns through fund commitments. Multiple return streams from a single relationship.
Growth Drivers and Strategic Outlook
AIG has identified several growth vectors for the medium term:
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Specialty and complex risk. The Convex partnership and Validus acquisition position AIG in high-margin specialty insurance — complex, hard-to-underwrite risks that command premium pricing. Convex's 87.6% combined ratio demonstrates the profitability available in this segment. The global specialty insurance market is estimated at over $100 billion in annual premiums and growing as risks become more complex.
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Cyber insurance. AIG was a pioneer, launching one of the industry's first cybersecurity insurance programs in 1999. As cyber risk has become ubiquitous — with the global cyber insurance market projected to exceed $25 billion by 2027 — AIG's early-mover status and accumulated loss data provide meaningful advantages in pricing and underwriting these risks.
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Emerging markets expansion. AIG's 200+ jurisdiction network positions it to capture growth as insurance penetration rises in Asia, Latin America, and Africa. The joint venture with Tata Group in India (established 2001) and the deep China relationships dating to 1992 represent strategic footholds.
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AI and data-driven underwriting. AIG's partnership with Anthropic (AIG CEO Zaffino and Anthropic CEO Dario Amodei have appeared together publicly discussing AI's impact on insurance) and broader technology investments signal a bet that AI will transform underwriting from an art to a science — improving risk selection, pricing accuracy, and operational efficiency.
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Capital deployment and M&A. The Convex ($5B), Everest ($2B), and ongoing Corebridge divestiture free capital for strategic reinvestment. Zaffino's approach of minority stakes and structured partnerships, rather than full acquisitions, reduces integration risk while maintaining capital flexibility.
Key Risks and Debates
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Catastrophe exposure. As a global P&C insurer, AIG is directly exposed to natural catastrophes — hurricanes, earthquakes, wildfires — whose frequency and severity are increasing due to climate change. A single catastrophic year could erase several years of underwriting improvement. The 2024 and 2025 catastrophe seasons have been severe industry-wide, and AIG's tariff exposure adds inflationary pressure on claims costs. Zaffino himself has warned that "tariffs tend to drive inflation and cost of claims higher."
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Underwriting cycle risk. The P&C insurance market is cyclical. The current "hard market" (rising premiums, improving profitability) has benefited AIG's turnaround. When the market inevitably softens — as competitors add capacity and pricing pressure intensifies — AIG will face the temptation to chase volume at the expense of discipline. This is exactly the dynamic that produced the decade of $30B in losses.
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Corebridge execution risk. AIG's ongoing divestiture of its Corebridge Financial stake is strategically sound but operationally complex. The timing and pricing of share sales affect AIG's capital position, and the transition from conglomerate to focused insurer requires sustained management attention during a period when the core business needs maximum focus.
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Technology transformation completeness. The Accenture partnership has improved AIG's technology infrastructure, but transforming a century-old insurer's systems is a multi-year journey that is not yet complete. Competitors like Chubb and insurtech entrants are investing aggressively in AI and data analytics. If AIG's technology modernization stalls, the underwriting data advantage it is trying to build will not materialize.
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Key-person concentration. The irony of an institution that was nearly destroyed by key-person risk is that its current turnaround is heavily identified with a single executive: Peter Zaffino. The naming of Eric Andersen as President and CEO-Elect suggests succession planning is underway, but the market has not yet priced a post-Zaffino AIG. Whether the discipline Zaffino has imposed is now institutional — or still personal — remains the most important question about the company's future.
Why AIG Matters
AIG matters because it is the most extreme case study in modern business of what happens when a company loses the capability upon which its existence depends — and then, slowly, painfully, at enormous cost, relearns it. The story is not inspirational in the conventional sense. It is a cautionary tale about the fragility of institutional knowledge, the danger of complexity that outstrips governance, and the staggering price — $182 billion, $30 billion in underwriting losses, two decades of diminished performance — of letting discipline lapse.
For operators and investors, the lessons are structural. The geographic moat that Starr built is the kind of advantage that takes a century to accumulate and can survive almost any internal crisis — because it is embedded in relationships, licenses, and local knowledge that cannot be destroyed by a single bad decision. The underwriting discipline that Zaffino has reimposed is the kind of advantage that must be rebuilt every day — because it is fundamentally a cultural choice that can be reversed in a single pricing cycle. And the tension between scope and discipline — between the ambition to expand and the rigor to say no — is the tension that defines not just AIG but every institution that grows beyond the capacity of any single person to manage.
The account list exists now. Underwriters' names are linked to their policies. The technology is no longer among the worst in the industry. The combined ratio is improving. The capital is being deployed across the ecosystem rather than consumed by losses. Whether this is the beginning of AIG's fourth act or the late stage of its third remains to be determined by forces — catastrophes, markets, competitors, the durability of institutional culture — that no single executive, however capable, fully controls.
