Screening for Repeated Limit-Ups, Wider Ranges, and Lower Lows

Summary

This Chinese stock screen combines a daily range greater than 1%, a current low below the previous day’s low, and more than two limit-up sessions within ten days. The article interprets repeated limit-ups as a sign of market attention and potential further gains, while the range and lower-low conditions are intended to describe recent price action. It proposes adding fundamental measures such as profitability and valuation indicators when refining the screen.

The document warns that limit-up frequency and price swings do not establish a company’s underlying value, and that short-term volatility can distort decisions. It supplies formula and Python examples, but their conditions are not fully consistent with the headline rules: the code introduces an additional limit-up exclusion, and the example’s return-based check differs from the stated count. No backtest or outcome data is offered, so the screen’s predictive value and the suggested refinements remain untested.

Key ideas

• The stated screen requires a daily amplitude above 1%, a current low below the previous low, and more than two limit-up days in ten sessions.
• Repeated limit-ups are treated as a sign of attention, not proof of fundamental value or future gains.
• The article recommends comparing candidates with profitability and valuation measures.
• Its sample code includes conditions that differ from the stated screen, so implementation details need reconciliation.
• The document provides no performance evidence and warns about volatility-driven judgment errors.

Tags

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