Maturity-weighted butterfly
A systematic fixed income approach—Maturity-weighted butterfly—defined by explicit rules, testable on history, and fragile when costs or regimes change.
Overview
This is a variation of the regression-weighted butterfly, where instead of fixing β in Eq. (408) via a regression based on historical data, this coefficient is based on the 3 bond maturities: β = T2−T1 T3−T2
Maturity-weighted butterfly 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 5.8.1. Educational summary—not a replication of the full formal definition.
Multi-Leg Payoff Logic
Pin and spot-vol interaction near expiry can turn Maturity-weighted butterfly from 'defined risk' into gamma you did not model.
Before backtesting Maturity-weighted butterfly, write the economic hypothesis in one sentence a risk manager would accept or reject.
Implementation and Research Process
Stress Maturity-weighted butterfly with joint spot and vol shocks; butterflies and condors fail at the short strike cluster.
Walk-forward or hold-out test Maturity-weighted butterfly; report turnover, max drawdown, and exposure—not CAGR alone.
Stress Maturity-weighted butterfly costs at 2× baseline; many Fixed Income edges live or die on slippage alone.
Risk: What Breaks This Strategy
Multi-leg structures (Maturity-weighted butterfly) multiply commission, margin, and operational error. One leg fills, another does not—you are suddenly naked risk.
Small moves in spot and vol interact nonlinearly; a 'defined risk' label does not mean defined stress behavior.
Adjustments mid-trade often become discretionary—exactly what systematic rules tried to avoid.
Common Mistakes to Avoid
- Erasing losing Maturity-weighted butterfly months instead of documenting regime breaks—that is how research firms stop learning.
- Calling Maturity-weighted butterfly 'defined risk' while leaving one leg unfilled.
- Stacking Maturity-weighted butterfly with correlated sidebar strategies without netting exposures.
- Reporting Maturity-weighted butterfly backtests without fees, slippage, and realistic fill rules.
How to Study This Strategy
- Compare Maturity-weighted butterfly to one sidebar alternative net of costs—document why you chose this structure.
- Run a paper book on Maturity-weighted butterfly for a full signal cycle; export trades and tag regimes manually.
- Restate Maturity-weighted butterfly (§5.8.1) as numbered rules another researcher could implement cold.
- Add conservative costs to Maturity-weighted butterfly; rerun with 2× spreads and compare drawdown paths.
- Write a one-page Maturity-weighted butterfly failure memo: three break modes and early warning signs.
Key Takeaways
- Maturity-weighted butterfly multiplies legs, margins, and operational failure modes—one missed fill creates naked exposure.
- Document adjustment rules for Maturity-weighted butterfly in advance; mid-trade discretion destroys systematic claims.
- Commission and slippage scale with leg count—net edge often lives or dies on costs.
- Small spot-vol moves interact nonlinearly; stress jointly, not one greek at a time.
- Paper-trade Maturity-weighted butterfly with full leg fills simulated at bid/ask before debating live capital.
Learning Tip
File a dated note after each Maturity-weighted butterfly paper session: what worked, what broke, what you will not override next time.
Explore related strategies in the sidebar or return to the full catalog.