Long combo
A systematic options approach—Long combo—defined by explicit rules, testable on history, and fragile when costs or regimes change.
Overview
Long combo sits in the Options 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 2.12. Educational summary—not a replication of the full formal definition.
How the Strategy Works
Data alignment for Long combo (rolls, corporate actions, holiday calendars, contract specs) is part of the strategy, not housekeeping.
In Options, microstructure around opens, rolls, and fixes can dominate small statistical edges on Long combo.
Implementation and Research Process
Walk-forward or hold-out test Long combo; report turnover, max drawdown, and exposure—not CAGR alone.
Stress Long combo costs at 2× baseline; many Options edges live or die on slippage alone.
Paper-trade Long combo through a full signal cycle before live sizing.
Risk: What Breaks This Strategy
Synthetic structures in Long combo rely on put-call parity and margin treatment that brokers do not always mirror in backtests.
Dividends, borrow, and early exercise on American options break clean synthetic relationships.
One leg fails to fill and you are directionally exposed without the offset you modeled.
Common Mistakes to Avoid
- Confusing this educational Long combo summary with compliance-approved investment advice.
- Stacking Long combo with correlated sidebar strategies without netting exposures.
- Changing Long combo parameters after each losing week—implicit discretion destroys reproducibility.
- Reporting Long combo backtests without fees, slippage, and realistic fill rules.
How to Study This Strategy
- List every data field Long combo needs in Options; verify point-in-time integrity.
- Map Long combo to Basic Trading chart concepts you will use as filters—not as substitutes for rules.
- Compare Long combo to one sidebar alternative net of costs—document why you chose this structure.
- Restate Long combo (§2.12) as numbered rules another researcher could implement cold.
- Write a one-page Long combo failure memo: three break modes and early warning signs.
Key Takeaways
- Long combo in Options is a testable rule set—a systematic options approach—long combo—defined by explicit rules, testable on history, and fragile when costs or regimes change.
- Translate every clause of Long combo into code or a checklist; judgment steps are not yet quantitative.
- Capacity for Long combo appears only when you simulate participation against average volume.
- Confusing this educational Long combo summary with compliance-approved investment advice.
- Related strategies in the sidebar may share hidden exposures with Long combo—compare before stacking.
Learning Tip
Build a 'Long combo' 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.