High-minus-low carry
A systematic foreign exchange (fx) approach—High-minus-low carry—defined by explicit rules, testable on history, and fragile when costs or regimes change.
Overview
The carry strategy discussed above can be applied to individual foreign currencies. It can also be applied cross-sectionally, to multiple foreign currencies.
High-minus-low carry sits in the Foreign Exchange (FX) 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 8.2.1. Educational summary—not a replication of the full formal definition.
How the Strategy Works
High-minus-low carry in Foreign Exchange (FX) is defined by explicit positions and transition rules—translate each clause into code or a checklist.
The published definition of High-minus-low carry (catalog §8.2.1) specifies when exposure changes; discretionary overrides invalidate systematic claims.
Implementation and Research Process
Walk-forward or hold-out test High-minus-low carry; report turnover, max drawdown, and exposure—not CAGR alone.
Stress High-minus-low carry costs at 2× baseline; many Foreign Exchange (FX) edges live or die on slippage alone.
Paper-trade High-minus-low carry through a full signal cycle before live sizing.
Risk: What Breaks This Strategy
Carry in High-minus-low carry 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
- Confusing this educational High-minus-low carry summary with compliance-approved investment advice.
- Reporting High-minus-low carry backtests without fees, slippage, and realistic fill rules.
- Deploying High-minus-low carry live before paper trading through at least one adverse Foreign Exchange (FX) month.
- Using academic §8.2.1 definitions for High-minus-low carry while ignoring borrow, margin, or contract specs.
How to Study This Strategy
- Compare High-minus-low carry to one sidebar alternative net of costs—document why you chose this structure.
- Run a paper book on High-minus-low carry for a full signal cycle; export trades and tag regimes manually.
- Add conservative costs to High-minus-low carry; rerun with 2× spreads and compare drawdown paths.
- Restate High-minus-low carry (§8.2.1) as numbered rules another researcher could implement cold.
- Map High-minus-low carry to Basic Trading chart concepts you will use as filters—not as substitutes for rules.
Key Takeaways
- High-minus-low carry in Foreign Exchange (FX) is a testable rule set—a systematic foreign exchange (fx) approach—high-minus-low carry—defined by explicit rules, testable on history, and fragile when costs or regimes change.
- Translate every clause of High-minus-low carry into code or a checklist; judgment steps are not yet quantitative.
- Costs widen when High-minus-low carry signals fire most aggressively—stress at 2× baseline spreads.
- Confusing this educational High-minus-low carry summary with compliance-approved investment advice.
- Carry in High-minus-low carry earns slowly and loses quickly when the funding leg inverts or the spread blows out.
Learning Tip
Chart the worst High-minus-low carry month beside the best; careers are shaped by the left tail, not the peak equity curve.
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