Roll yields
A systematic commodities approach—Roll yields—defined by explicit rules, testable on history, and fragile when costs or regimes change.
Overview
When commodity futures are in backwardation (contango), i.e., when the term struc- ture of futures prices is downward (upward) sloping, long (short) futures positions on average generate positive returns due to the roll yield. Roll yields come from re- balancing futures positions: when the current long (short) futures contract is about to expire, it is sold (covered) and another futures contract with longer expiration is bought (sold).
Roll yields sits in the Commodities 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 9.1. Educational summary—not a replication of the full formal definition.
How the Strategy Works
Roll yields in Commodities is defined by explicit positions and transition rules—translate each clause into code or a checklist.
The published definition of Roll yields (catalog §9.1) specifies when exposure changes; discretionary overrides invalidate systematic claims.
Implementation and Research Process
Include roll and repo financing in Roll yields; carry trades invert overnight.
Walk-forward or hold-out test Roll yields; report turnover, max drawdown, and exposure—not CAGR alone.
Document Roll yields capacity in Commodities: intended participation versus average daily volume.
Risk: What Breaks This Strategy
Duration and convexity on Roll yields overwhelm small spread edges when rates gap on CPI or central bank surprises.
Credit spreads are correlated in stress—diversification across issuers is partial, not promised.
Roll and repo financing can invert carry trades overnight.
Common Mistakes to Avoid
- Reporting Roll yields backtests without fees, slippage, and realistic fill rules.
- Ignoring convexity on Roll yields when rates gap—duration alone is not the risk.
- Stacking Roll yields with correlated sidebar strategies without netting exposures.
- Assuming Roll yields issuer diversification saves you in a credit crisis.
How to Study This Strategy
- Write a one-page Roll yields failure memo: three break modes and early warning signs.
- Run a paper book on Roll yields for a full signal cycle; export trades and tag regimes manually.
- Restate Roll yields (§9.1) as numbered rules another researcher could implement cold.
- Add conservative costs to Roll yields; rerun with 2× spreads and compare drawdown paths.
- List every data field Roll yields needs in Commodities; verify point-in-time integrity.
Key Takeaways
- Roll yields embeds duration, convexity, and spread risk—small carry edges vanish on one rates gap.
- Curve shape and roll-down assumptions for Roll yields must match the live roll calendar, not a smooth back-adjusted series.
- Credit spreads correlate in stress—issuer diversification is partial, not promised.
- Policy surprises dominate P&L more often than micro relative-value tweaks.
- Stress Roll yields with parallel and twist shocks, not only historical replay.
Learning Tip
Build a 'Roll yields' 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.