Screening Stocks for Volatility, Recent Limit-Ups, and a Modest Daily Move

Summary

This Chinese equity screening post proposes selecting stocks with an intraday range above a threshold, at least one limit-up event in the prior 25 days, and a daily percentage move within a stated band. It frames large ranges and recent limit-ups as signs of volatility and market attention, then supplies indicator-formula and Python examples. The examples do not cleanly match the written strategy: the Python conditions test for a limit-up on the same row as the other filters rather than clearly checking the preceding 25 days, and its daily-return condition uses absolute values instead of the stated asymmetric range.

The post warns that weak company results, poor market conditions, and fast-moving themes can undermine the screen. It recommends adding fundamental and technical filters and stop-loss controls. It provides no backtest, returns, or evidence that recent limit-ups predict further gains, so the selection rationale is unvalidated.

Key ideas

• The stated screen combines a large daily range, a limit-up in the prior 25 days, and a bounded daily price move.
• The supplied Python sketch appears to test a same-day limit-up rather than the stated lookback condition.
• Its absolute-return filter also differs from the written asymmetric daily-move band.
• The post identifies weak fundamentals, adverse markets, and fast theme rotation as risks.
• No performance evidence is provided for the screening rules.

Tags

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