A forecast signal is a model that takes in features and predicts future returns. Some systematic trading strategies, at their core, are just pipelines for generating these signals and converting them into portfolio positions.
The pipeline is deceptively simple: gather data, transform it into features, use machine learning to generate forecasts, then size your positions. But finance has among the lowest signal-to-noise ratios of any prediction domain, roughly 1 basis point of predictability per day against 2% daily volatility.
That means most of the information in your model is noise, not signal. Understanding how to build forecast signals in this unforgiving environment is the foundation of systematic investing.
Introduction To Forecast Signals
A forecast signal is a model that takes in features and predicts future returns. Some systematic trading strategies, at their core, are just pipelines for generating these signals and converting them into portfolio positions. The pipeline is deceptively simple: gather data, transform it into features, use machine learning to generate forecasts, then size your positions. But finance has among the lowest signal-to-noise ratios of any prediction domain, roughly 1 basis point of predictability per day against 2% daily volatility. That means most of the information in your model is noise, not signal. Understanding how to build forecast signals in this unforgiving environment is the foundation of systematic investing.