A Three-Day Correlation Factor for Stocks and a Market Benchmark

Summary

This brief request proposes a factor based on the correlation between a benchmark’s returns and an individual stock’s returns over a three-day window. It names the intended inputs and lookback, but provides no code, worked example, explanation of how to construct the return series, or evidence about the factor’s usefulness.

The concept could describe whether a stock has recently moved in line with the broader market, which may be useful for studying market sensitivity or grouping stocks by co-movement. The document does not specify the benchmark, sampling frequency, treatment of missing observations, or how the correlation would enter a portfolio or trading rule. It also contains no backtest or discussion of stability, so the proposed factor should be treated as an unelaborated research prompt rather than a tested strategy.

Key ideas

• The proposed factor is the correlation between benchmark and individual-stock returns over three days.
• The document does not identify a particular benchmark or sampling frequency.
• It offers no implementation details, portfolio rule, or empirical results.
• The factor is a research prompt rather than a validated trading strategy.

Tags

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