2019issue C0912-17
Continuous futures series and long-horizon allocation evaluation
A long-horizon futures allocation cannot be read from one listed expiry. Evaluate the continuous series first, because unadjusted rolls and additive back-adjustment can distort the buy-and-hold path that portfolio construction needs.
- A long-horizon futures series cannot be treated as a single listed contract, so a continuous series must be synthesized before buy-and-hold allocation results are evaluated.
- Unadjusted stitching leaves expiration gaps from contango and backwardation in the path, and a price-difference roll is a position replacement rather than a realized gain or loss.
- Additive Panama-style back-adjustment can serve short-horizon trades but is a poor basis for long-horizon buy-and-hold evaluation, while a ratio-adjusted series is closer to the input that compound growth requires.
- A quoted futures return still understates a fully funded allocation because it omits the financing and residual-cash treatment of the contract principal.
A listed expiry is not a long-horizon series
A long-horizon futures series cannot be treated as a single listed contract because each contract expires, so researchers must synthesize a continuous series before evaluating buy-and-hold allocation results.
TradersWeek editorial view: the first check on a portfolio construction idea is whether the futures series can support a long-horizon allocation judgment, not whether any stitched contract looks like a complete return history.
Asset allocation, as used here, means choosing how much capital and leverage to assign across markets so a single futures position is judged inside a diversified or regime-aware portfolio rather than in isolation.
A roll is a replacement, not a gain
A price-difference roll is not itself a realized gain or loss. Selling one expiry and buying a later expiry at a different price only replaces the position and can leave a persistent drag when the later contract costs more.
Diversification, in this setting, means combining markets with different roll, volatility, and carry behavior so one contract’s path does not define the whole portfolio’s risk picture.
Additive adjustment is a poor long-horizon basis
Additive Panama-style back-adjustment can be serviceable for short-horizon trades, but it is a poor basis for long-horizon buy-and-hold evaluation because historic levels can become negative and implied drawdowns can become extreme.
A conventional additive back-adjusted series is not a reliable input for compound annual growth on a long futures holding, whereas a ratio-adjusted series is closer to the quantity needed for that evaluation.
Bond futures need a leveraged continuous series
Evaluating bond futures inside a risk-parity-style allocation requires a continuous series that can represent leveraged futures exposure rather than cash-market bond holdings financed at a retail margin rate.
The reconstructed futures path still understates a fully funded allocation because the quoted futures return omits the financing and residual-cash treatment of the contract’s principal.
A Sharpe ratio is a scaled comparison of average excess return to variability, used here as a backtested diagnostic of an explicit quantitative baseline rather than as a live forecast.
TradersWeek editorial view: a reconstructed series can support that diagnostic only after the path is fit for long-horizon evaluation, and even then the quoted futures return is not a fully funded allocation result.
All readings on this track · 12 readings
- 1986Auditing stochastic crossovers with moving-average baselines
- 1994Evaluating system changes with chi-square, Sharpe, and leverage
- 1995Evaluating mechanical switch rules with a stop-loss order and Sharpe ratio
- 1995Intermediate-term allocation with drawdown filters
- 1996Evaluating a multi-market book without picking winners
- 1996Regime-aware allocation beyond a single equity trend
- 1997Evaluating managed futures as portfolio diversifiers
- 2008Audit an out-of-the-money covered-call overlay against a Sharpe control
- 2013Constructing the Sharpe ratio as return over variability
- 2014Expected value and bet size are separate controls
- 2015Constructing a Sharpe-style score from profit and loss variability
- 2019Continuous futures series and long-horizon allocation evaluation