Turnover, Illiquidity, and Volume-Price Factors for China A-Shares

Summary

This research note explores additional technical factors for stock selection in the CSI 500 universe. It groups candidate measures into turnover behavior, illiquidity, and combined volume-price information. Turnover candidates include stability, coefficient of variation, and abnormal turnover. Illiquidity candidates measure how trading value relates to absolute returns, with variants focused on improved measurement, negative-return days, and variability. Volume-price candidates include On-Balance Volume and correlations between price and trading volume.

The report compares the new factors with existing technical factors, checks their correlations, and combines six selected measures, including momentum, maximum interval return, turnover variation and stability, average trading value, and illiquidity variation. It reports improved factor returns and CSI 500 enhancement results over the stated late-2021 to early-2023 period, with higher excess return, information ratio, and Calmar ratio after the changes. These are historical test results over a limited period and universe; the note explicitly cautions that factors or models may stop working in the future. The excerpt does not provide enough detail to assess implementation, costs, or broader robustness.

Key ideas

• The study examines turnover, illiquidity, and volume-price measures as stock-selection factors.
• Turnover stability and variation measures are among the stronger candidates in the CSI 500 universe.
• Illiquidity is framed through the relation between trading value and absolute returns.
• The final composite combines six selected measures after comparisons and correlation checks.
• Reported improvements are historical and may not persist as factor behavior changes.

Tags

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