Credit Default Swap

A credit default swap (CDS) is a bilateral over-the-counter contract that transfers the credit risk of a reference entity—typically a corporation or sovereign—from a protection buyer to a protection seller. The buyer pays a regular premium (the "CDS spread," quoted in basis points of notional value) and, in return, receives a payout if a defined credit event occurs. Credit events are standardized under International Swaps and Derivatives Association (ISDA) documentation and generally include bankruptcy, failure to pay, and restructuring.

CDS were developed at JPMorgan in the mid-1990s and grew rapidly in the 2000s, with gross notional outstanding peaking near $58 trillion in late 2007 according to Bank for International Settlements data. They serve three main functions: hedging (a bondholder insuring against default), speculation (a "naked" CDS taken without owning the underlying debt), and arbitrage between cash bond and derivative markets.

CDS played a central role in the 2008 global financial crisis. AIG's Financial Products division had written large volumes of protection on mortgage-backed securities and required an $182 billion U.S. government rescue when collateral calls mounted. The episode prompted reforms under the 2010 Dodd-Frank Act in the United States and the European Market Infrastructure Regulation (EMIR) of 2012, both of which pushed standardized CDS toward central clearing and trade reporting.

Sovereign CDS are politically sensitive. The EU's Regulation 236/2012 banned uncovered (naked) sovereign CDS positions on EU member states after concerns that such trading amplified the Greek debt crisis. The 2012 Greek debt restructuring triggered a CDS payout determined by ISDA's Determinations Committee, and the 2022 Russian sovereign default following Western sanctions also resulted in a CDS auction.

For IR researchers, CDS spreads are widely used as market-implied measures of sovereign risk, often cited alongside ratings from Moody's, S&P, and Fitch when analyzing fiscal stress, capital flight, or geopolitical shocks.