Carry factor
A systematic fixed income approach—Carry factor—defined by explicit rules, testable on history, and fragile when costs or regimes change.
Overview
Carry factor 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 5.11. Educational summary—not a replication of the full formal definition.
How the Strategy Works
Carry factor in Fixed Income is defined by explicit positions and transition rules—translate each clause into code or a checklist.
The published definition of Carry factor (catalog §5.11) specifies when exposure changes; discretionary overrides invalidate systematic claims.
Implementation and Research Process
Walk-forward or hold-out test Carry factor; report turnover, max drawdown, and exposure—not CAGR alone.
Log regime tags beside Carry factor performance slices—vol level, rate cycle, liquidity stress.
Anchor Carry factor research to the catalog definition, then stress every assumption the textbook silently skips.
Risk: What Breaks This Strategy
Carry in Carry factor earns slowly and loses quickly when the funding leg inverts or the spread blows out.
Crowded carry unwinds synchronously—liquidity disappears on the exit side first.
Leverage turns a stable historical carry series into a margin-call candidate in one week.
Common Mistakes to Avoid
- Stacking Carry factor with correlated sidebar strategies without netting exposures.
- Reporting Carry factor backtests without fees, slippage, and realistic fill rules.
- Confusing this educational Carry factor summary with compliance-approved investment advice.
- Using academic §5.11 definitions for Carry factor while ignoring borrow, margin, or contract specs.
How to Study This Strategy
- Map Carry factor to Basic Trading chart concepts you will use as filters—not as substitutes for rules.
- List every data field Carry factor needs in Fixed Income; verify point-in-time integrity.
- Run a paper book on Carry factor for a full signal cycle; export trades and tag regimes manually.
- Compare Carry factor to one sidebar alternative net of costs—document why you chose this structure.
- Add conservative costs to Carry factor; rerun with 2× spreads and compare drawdown paths.
Key Takeaways
- Carry factor in Fixed Income is a testable rule set—a systematic fixed income approach—carry factor—defined by explicit rules, testable on history, and fragile when costs or regimes change.
- Translate every clause of Carry factor into code or a checklist; judgment steps are not yet quantitative.
- Costs widen when Carry factor signals fire most aggressively—stress at 2× baseline spreads.
- Stacking Carry factor with correlated sidebar strategies without netting exposures.
- Carry in Carry factor earns slowly and loses quickly when the funding leg inverts or the spread blows out.
Learning Tip
Compare Carry factor to one sidebar alternative net of costs—complexity should pay rent.
Explore related strategies in the sidebar or return to the full catalog.