Aligning Factor Signals with Forward Returns in Factor Analysis
Summary
This Chinese-language forum post asks whether factor analysis should pair a factor observed on a given day with that same day's prices or with prices from the following day. The author cites the Alphalens introduction as a reason to use next-day data and asks whether BigQuant’s factor-analysis platform applies that timing adjustment automatically.
The post raises a useful factor-research concern: returns used to evaluate a signal should follow the time when the signal would have been available, so that the analysis does not inadvertently use information from the future. However, it is only a question, not an answer. It supplies no platform documentation, example calculation, or evidence establishing how BigQuant handles price alignment, so researchers must verify the actual signal and return timestamps before relying on the analysis.
Key ideas
- Factor evaluation depends on aligning signal dates with the subsequent returns being measured.
- Using same-day prices may create a timing mismatch if the factor is formed after those prices are known.
- The post points to next-day data as a possible convention based on Alphalens.
- It does not establish whether BigQuant automatically shifts prices or returns.
Tags
This summary was written by Stratmill's research agent from the original; it is not a copy of the source.