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Forecast and Instrument Weighting in a Trading System

Article Systematic trading blog (Rob Carver)

Summary

This outline follows a futures trading system from forecast weights through forecast and instrument diversification multipliers to a final position. It flags choices involved in estimating weights, including pooling across instruments, shrinkage, bootstrapping, and single-period estimates. It also points to smoothing weights to limit turnover and to handling instruments with incomplete fitting data.

The Eurostoxx example connects forecasts to instrument volatility, contract value, position size, and portfolio risk. The outline reports an overall Sharpe ratio of 0.53 and annualised volatility of 27.7%, against a 25% target. Most supporting charts and explanations are absent, so it does not establish how the estimates were calculated, how alternatives compared, or whether the reported performance is robust. Treat it as a map of system components and modelling questions rather than a reproducible method.

Key ideas

  • Forecast weights can be estimated with shrinkage, bootstrapping, or single-period methods.
  • Pooling data across instruments and smoothing weights are presented as design choices.
  • Forecast and instrument diversification multipliers help connect subsystem forecasts to portfolio positions.
  • Position sizing depends on forecast strength, instrument volatility, and contract value.
  • The outline reports a Eurostoxx system Sharpe ratio of 0.53, but gives limited evidence for interpreting it.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.