Chinese Stock Screening by Volatility, Turnover, and Recent Limit-Up Activity

Summary

This Chinese equity screening strategy combines price amplitude, a turnover and auction-volume measure, and recent limit-up frequency. It selects stocks with amplitude above 1, a calculated turnover-volume ratio between 0.5 and 2, and more than two limit-up days in the prior ten days. The rationale is that price movement and trading activity may identify opportunities, while repeated limit-ups indicate recent upward strength.

The post warns that frequent limit-ups may reflect excessive enthusiasm and potentially inflated prices, and that the approach may suffer from hindsight bias. It suggests adding adjusted prices and financial measures such as valuation or profit growth. The supplied formula and Python example do not fully match the stated screening logic, and the example uses historical volume proxies rather than a clearly identified auction-volume field. No performance evidence is presented, so the strategy's predictive value is unestablished.

Key ideas

• The screen combines price amplitude, a turnover-volume ratio, and recent limit-up activity.
• It treats recent limit-ups as a signal of strong upward momentum.
• The author identifies overvaluation from market enthusiasm and hindsight bias as risks.
• The formula and sample implementation appear inconsistent with the written criteria.

Tags

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