Swap-spread arbitrage
A systematic fixed income approach—Swap-spread arbitrage—defined by explicit rules, testable on history, and fragile when costs or regimes change.
Overview
This dollar-neutral strategy consists of a long (short) position in an interest rate swap (see Subsection 5.1.4) and a short (long) position in a Treasury bond (with the constant yield YTreasury ) with the same maturity as the swap. A long (short) swap involves receiving (making) fixed raterswap coupon payments in exchange for making (receiving) variable rate coupon payments at LIBOR (the London Interbank Offer Rate)L(t).
Swap-spread arbitrage sits in the Fixed Income chapter of the systematic catalog. On QUSXFI we treat it as a testable hypothesis: specify entries, exits, sizing, and costs—then ask whether edge survives out-of-sample scrutiny.
Discretionary traders often arrive at similar ideas intuitively; the quantitative version forces you to write the rule before you see the next bar. That discipline is what makes results reproducible—or exposes them as luck.
Based on the research catalog 151 Trading Strategies (Kakushadze & Serur, 2018), section 5.15. Educational summary—not a replication of the full formal definition.
Defined-Risk Spread Logic
Leg risk on Swap-spread arbitrage means partial fills create naked exposure; flatten rules belong in the spec before entry.
Map every input Swap-spread arbitrage needs in Fixed Income—prices, vol surfaces, fundamentals, or legal milestones—and verify point-in-time integrity.
Implementation and Research Process
Backtest Swap-spread arbitrage with early-assignment logic on American shorts inside the package.
Tag dividend dates for Swap-spread arbitrage; early assignment on the short leg can appear inside 'defined risk' structures.
Paper-trade Swap-spread arbitrage through one pin week near the short strike; gamma near expiry is not on the static diagram.
Risk: What Breaks This Strategy
Vertical structures like Swap-spread arbitrage cap profit deliberately; the tail you think you removed can reappear via early assignment or dividend dates on American options.
Liquidity on the long leg vanishes first in stress—you may exit the spread at fire-sale prices even if direction was right.
Pin at the short strike creates gamma you did not model if you hold through expiry.
Common Mistakes to Avoid
- Holding Swap-spread arbitrage through pin at the short strike while gamma explodes.
- Deploying Swap-spread arbitrage live before paper trading through at least one adverse Fixed Income month.
- Entering Swap-spread arbitrage without atomic spread discipline—leg risk is the silent killer.
- Stacking Swap-spread arbitrage with correlated sidebar strategies without netting exposures.
How to Study This Strategy
- List every data field Swap-spread arbitrage needs in Fixed Income; verify point-in-time integrity.
- Compare Swap-spread arbitrage to one sidebar alternative net of costs—document why you chose this structure.
- Read the catalog excerpt for Swap-spread arbitrage and highlight one clause your spec must not hand-wave.
- Write a one-page Swap-spread arbitrage failure memo: three break modes and early warning signs.
- Restate Swap-spread arbitrage (§5.15) as numbered rules another researcher could implement cold.
Key Takeaways
- Swap-spread arbitrage defines max profit and loss by construction—your job is whether that box fits the regime you are trading.
- Leg risk on Swap-spread arbitrage means one side fills and the other does not; have a flatten rule before entry.
- Early assignment on American shorts can appear inside verticals you labeled defined-risk.
- Pin at the short strike adds gamma near expiry that linear payoff diagrams hide.
- Verticals in Swap-spread arbitrage are not substitutes for direction bets with wider targets—accept the cap deliberately.
Learning Tip
Build a 'Swap-spread arbitrage' research memo: hypothesis, universe, parameters, costs, kill switches—edit it before every tweak.
Explore related strategies in the sidebar or return to the full catalog.