Enhancing Industry Momentum with Risk and Continuity Factors

Summary

This report evaluates momentum based sector allocation in Chinese equities. It compares ordinary lookback return ranking with risk-adjusted alternatives, including Sharpe ratio, information ratio, and a path-adjusted measure that divides return by the sum of absolute daily returns. The tests use monthly holding periods and split historical data into in-sample and out-of-sample periods to examine parameter stability.

Ordinary momentum shows substantial parameter instability, while risk adjustment improves the share of parameters that remain effective out of sample, though excess returns are still limited. The report then combines momentum measures with indicators intended to capture trend continuity, such as the largest daily return and multi-day momentum volatility. Two combinations are reported as the strongest, with favorable out-of-sample excess returns and persistence rates. A brief portfolio snapshot compares their returns with industry equal weight and broad indices. These are historical backtest findings from a particular Chinese market sample; the report cautions that changing market behavior could invalidate the factors.

Key ideas

• Ordinary industry momentum parameters that work in sample may fail out of sample.
• Risk adjustment improves parameter stability, with path-adjusted momentum performing best among the tested variants.
• Continuity measures are designed to capture smoothness and directional consistency in industry returns.
• Combining Sharpe ratio with maximum daily return, or path-adjusted momentum with multi-day volatility, produced the strongest reported results.
• The findings are historical and may not persist if market conditions change.

Tags

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