Credit Default Swap (CDS)
Why Credit Default Swaps Matter
Before CDS existed, if you held a corporate bond and worried about the issuer defaulting, your only option was to sell the bond. CDS changed that. They let you keep the bond (and its coupon income) while transferring the default risk to someone else. They also let you express a view on a company’s creditworthiness without owning any of its debt at all.
CDS markets provide a real-time, market-driven measure of credit risk. When a company’s CDS spread widens from 100 to 400 basis points, the market is screaming that default risk has spiked — often before credit rating agencies catch up. CDS spreads are now the most closely watched indicator of corporate and sovereign credit health.
How a CDS Works
The setup. Two parties agree on a reference entity (the company or sovereign whose credit risk is being traded), a notional amount, a maturity (typically 5 years for the most liquid contracts), and a premium (the “CDS spread”). No money changes hands upfront beyond a possible upfront payment to equalize the contract to the current market spread.
During the contract’s life. The protection buyer pays the CDS spread (in basis points per year, applied to the notional) in quarterly installments. If nothing happens — the reference entity keeps paying its debts — the protection seller collects these premiums as income for the life of the contract.
If a credit event occurs. The protection seller compensates the buyer for the loss. Settlement can happen two ways:
Physical settlement: The buyer delivers the defaulted bonds to the seller and receives par (100% of notional) in return. The seller absorbs whatever the bonds are actually worth (often 20–40 cents on the dollar).
Cash settlement: An auction process determines the recovery rate on the defaulted bonds. The seller pays the buyer the difference between par and the recovery value. If recovery is 35%, the seller pays 65% of notional.
CDS Pricing: The Spread
A CDS spread of 200 basis points on $10 million notional means the protection buyer pays roughly $200,000 per year (or $50,000 per quarter). The spread reflects the market’s assessment of the probability of default multiplied by the expected loss given default.
| CDS Spread Range | Market Interpretation | Typical Reference Entities |
|---|---|---|
| 10–50 bps | Very low default risk | Investment-grade blue chips, strong sovereigns |
| 50–200 bps | Moderate risk | Lower investment-grade, BBB-rated corporates |
| 200–500 bps | Elevated risk | High-yield issuers, stressed companies |
| 500–1,000 bps | Significant distress | Companies with real default concerns |
| 1,000+ bps | Default is priced as likely | Distressed / near-default entities |
Credit Events: What Triggers a Payout
Not every bad outcome triggers a CDS. The ISDA Determinations Committee — an industry body — decides whether a specific event qualifies. Standard credit events include:
| Credit Event | Description |
|---|---|
| Failure to pay | The reference entity misses a scheduled interest or principal payment beyond any grace period |
| Bankruptcy | The reference entity files for bankruptcy or is subject to insolvency proceedings |
| Restructuring | Debt terms are changed in a way that disadvantages creditors (maturity extension, coupon reduction, currency redenomination) |
The restructuring trigger varies by contract type. North American corporate CDS typically exclude restructuring (trading as “no restructuring” or XR), while European contracts often include it. Sovereign CDS include all three triggers.
Who Uses CDS and Why
| Participant | Role | Motivation |
|---|---|---|
| Bondholders | Protection buyer | Hedge default risk on bonds they own without selling the position |
| Banks | Protection buyer | Reduce credit exposure on loan portfolios, free up regulatory capital |
| Insurance companies | Protection seller | Earn premium income by taking on credit risk (similar to writing insurance) |
| Hedge funds | Both | Express directional credit views, trade relative value between issuers or between CDS and bonds |
| Speculators | Both | Bet on credit deterioration or improvement without owning the underlying bonds |
CDS and the 2008 Financial Crisis
Credit default swaps became infamous during the 2008 crisis, and for good reason. AIG had sold enormous volumes of CDS protection on mortgage-backed securities. When the housing market collapsed and those securities defaulted, AIG owed billions it couldn’t pay. The US government stepped in with a $182 billion bailout — largely to prevent AIG’s CDS counterparties (mostly major banks) from suffering catastrophic losses that would have cascaded through the entire financial system.
The crisis exposed several problems with the CDS market as it existed: extreme concentration of risk in a few sellers, lack of transparency (nobody knew total exposures), insufficient collateral requirements, and the ability of speculators to buy protection without owning the underlying bonds (so-called “naked CDS”), which some argued amplified panic.
Post-crisis reforms addressed many of these issues. Standardized CDS now clear through central counterparties. Reporting requirements provide transparency on aggregate positions. Margin rules reduce counterparty exposure. The market is substantially safer than it was in 2007 — though concentration risk and complexity remain inherent features.
CDS Indices
Rather than trading single-name CDS one company at a time, many participants use CDS indices — standardized baskets of credit default swaps on multiple reference entities. The two most widely traded are:
CDX (North America): Investment-grade (CDX.NA.IG, 125 names) and high-yield (CDX.NA.HY, 100 names) indices tracking North American corporate credit risk.
iTraxx (Europe/Asia): Similar indices covering European and Asian corporate credit.
CDS indices are more liquid than single-name CDS and serve as the primary tool for macro credit hedging and trading. When a portfolio manager wants to quickly reduce credit exposure across the board, buying protection on CDX.NA.IG is faster and cheaper than hedging individual names.
CDS vs. Bonds: Key Differences
| Feature | CDS | Bonds |
|---|---|---|
| What you’re trading | Pure credit risk, isolated | Credit risk + interest rate risk + liquidity |
| Capital required | Low — margin/collateral only | Full purchase price |
| Short selling | Easy — buy protection | Difficult and costly to short bonds |
| Standardization | Standardized maturities and terms (ISDA) | Each bond has unique terms |
| Liquidity | Often more liquid for actively traded names | Varies widely — many bonds trade infrequently |
Key Takeaways
- A credit default swap transfers credit risk from a protection buyer to a protection seller in exchange for periodic premium payments.
- CDS spreads are the market’s real-time pricing of default probability — they often move ahead of rating agency actions and bond spreads.
- Credit events (failure to pay, bankruptcy, restructuring) trigger payouts determined by an ISDA auction process.
- The 2008 crisis exposed concentration and transparency failures in the CDS market, leading to major post-crisis reforms including central clearing.
- CDS indices (CDX, iTraxx) are the most liquid credit derivatives and serve as the go-to tool for macro credit hedging.
FAQ
Is a CDS the same as insurance?
Functionally similar, but legally distinct. Insurance requires the buyer to have an “insurable interest” (you must own the thing being insured). CDS have no such requirement — you can buy protection without owning the underlying bonds. CDS are regulated as derivatives, not insurance products, which means they fall under different regulatory frameworks (CFTC/SEC rather than state insurance regulators).
What does a widening CDS spread mean?
It means the market perceives increased default risk for the reference entity. Protection is becoming more expensive because more participants want to hedge or bet against that entity’s credit. A rapid widening — say from 100 to 500 bps in a few weeks — is a classic distress signal.
Can CDS spreads predict defaults?
CDS spreads are among the best predictors available, but they’re not infallible. Spreads above 1,000 bps indicate the market assigns a high probability of default, and historically, entities at those levels default more often than not. However, spreads can spike on fear and revert if conditions improve — not every wide spread leads to default.
What happened to AIG in 2008?
AIG’s Financial Products division sold massive amounts of CDS protection on mortgage-backed CDOs. When the housing market collapsed, those CDOs suffered credit events, and AIG owed tens of billions in payouts it couldn’t fund. Counterparties (including Goldman Sachs and other major banks) demanded collateral, triggering a liquidity crisis. The US government provided $182 billion in support to prevent a cascading systemic collapse.
Are CDS still widely traded after the crisis?
Yes. The market contracted significantly post-2008 as regulations increased costs and naked speculation declined, but CDS remain essential for credit risk transfer. Single-name CDS are less active than pre-crisis, but CDS index trading (CDX, iTraxx) is robust and highly liquid. The market is smaller, better regulated, and more transparently cleared than it was before 2008.