Why counterparty risk matters
A profitable trade can still create a loss if the counterparty defaults. Derivatives, securities lending, repurchase agreements, deposits, and prime-broker relationships all create this dependency. Counterparty failure can also freeze collateral and interrupt trading at the moment markets are stressed. Managers therefore assess both the likelihood of default and the replacement cost, collateral shortfall, settlement exposure, and concentration arising from a shared provider.
How it is applied
Risk teams approve counterparties, set limits by legal entity and group, negotiate netting and collateral agreements, and monitor current plus potential future exposure. Daily margining can reduce unsecured exposure. Central clearing substitutes exposure to a clearing house for bilateral exposure, but does not eliminate risk. Managers diversify prime brokers, test close-out assumptions, and track wrong-way risk, where exposure grows as the counterparty’s credit quality deteriorates.
Portfolio example
A fund has an interest-rate swap worth $8 million in its favor with a dealer and holds $6 million of eligible collateral. Ignoring netting and recovery, current unsecured exposure is about $2 million. If rates move further before default close-out, replacement cost might reach $5 million. The fund’s loss depends on collateral access, legal netting, recovery, and the cost of replacing the hedge during stressed markets.
How to interpret it
Current exposure is the amount that could be lost if default occurred now, after enforceable netting and collateral. Potential future exposure estimates how that amount might grow. A low credit spread does not make exposure negligible when trades are large or long-dated. Limits should be viewed across affiliated entities and products, because separate trading desks may ultimately depend on the same counterparty balance sheet.
Limitations and common misconceptions
Credit ratings and market spreads can deteriorate after risk has accumulated. Legal netting may fail across jurisdictions or entities, collateral can lose value, and operational delays can extend exposure. Models may understate gap moves and wrong-way risk. Diversification among counterparties can be illusory if they share clearing, custody, or funding dependencies. Documentation, liquidity reserves, stress tests, and operational contingency planning are as important as quantitative limits.
Sources and further reading
- Risk Management: An IntroductionCFA Institute
- Minimum Capital Requirements for Market RiskBank for International Settlements