Counterparty Risk

Counterparty risk is the risk that the other party to a contract, trade, or dependency will not fulfil their obligation. They might default, delay, or renege. You perform; they don't. The risk is asymmetric: you're exposed to their failure. It appears in lending (borrower doesn't repay), derivatives (counterparty doesn't settle), supply (supplier doesn't deliver), employment (key person leaves or underperforms), and partnerships (partner doesn't deliver). The discipline is identifying counterparties, sizing exposure, and mitigating — collateral, diversification, contract, or backup. Ignoring counterparty risk is assuming the other side will always perform. That assumption fails in stress.

Counterparty risk increases with concentration. One borrower, one supplier, one employer, one partner — if that one fails, you take the full loss. Diversification across counterparties reduces the impact of any single failure. So does collateral, escrow, and contractual remedies. But mitigation has limits: in a systemic crisis, many counterparties can fail together (correlation). The 2008 financial crisis was in part a counterparty crisis: when Lehman failed, others who had relied on it were exposed. The lesson: assess not only individual counterparty quality but also how correlated their failures might be. Single-name risk and systemic counterparty risk are both real.

The model extends beyond finance. Your key customer is a counterparty: if they stop paying or leave, you're exposed. Your cloud provider is a counterparty: if they go down or change terms, you're exposed. Your co-founder is a counterparty to an implicit or explicit pact. The strategic question is always: who do I depend on to perform, and what happens if they don't? Map counterparties. Size exposure. Then diversify, secure, or accept the risk explicitly.