Screening Chinese A-Shares by Turnover and Prior Auction Activity

Summary

This stock-selection screen keeps shares with daily turnover between 3% and 12%, excludes Beijing-listed A-shares, and applies a threshold to prior-day auction turnover. The post frames the turnover band as a way to focus on moderately active stocks and the auction condition as an additional activity filter. It includes an indicator formula and a Python example intended to produce a qualifying stock list.

The post offers no backtest or other evidence that these filters improve returns. It warns that the screen may leave few candidates, ignores fundamental information, and can select stocks exposed to sharp short-term swings or market-wide effects on auction activity. The implementation also has apparent inconsistencies: the prose specifies prior auction turnover above 0.26, while the code derives a proxy from daily percentage change and volume rather than an auction-turnover field. The post recommends considering market conditions, fundamentals, and risk controls, but does not evaluate those additions.

Key ideas

• The screen sets daily turnover bounds of 3% and 12% and excludes Beijing A-shares.
• It adds a prior-day auction-turnover threshold as a measure of trading activity.
• The document supplies a formula and Python example but reports no performance evidence.
• The code’s auction-turnover proxy may not represent the stated condition, and the screen omits fundamentals.

Tags

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