Screening Large-Cap Stocks After a Moderate Daily Decline

Summary

This stock screen looks for shares with an amplitude above 1%, a daily decline between 4% and 5%, and circulating market capitalization above 10 billion yuan. The decline may serve as a candidate signal for a reversal, while the amplitude selects stocks with meaningful intraday movement and the market-cap threshold favors larger firms. The post includes example indicator and Python implementations, but supplies no backtest or evidence that the conditions predict rebounds.

The author notes that the criteria cover only a small set of market characteristics. Price range and recent loss can be noisy, and market capitalization is not a substitute for company financial analysis. Suggested refinements include adding valuation measures and improving the data used for amplitude and decline calculations. The strategy therefore remains a simple screening rule rather than a complete trading system: it does not specify entry timing, exits, position sizing, or how to evaluate results.

Key ideas

• The screen requires amplitude above 1%, a daily fall between 4% and 5%, and circulating market value above 10 billion yuan.
• A moderate daily decline is treated as a possible reversal setup, but no predictive evidence is presented.
• Market capitalization narrows the universe but does not replace financial analysis.
• The post recommends considering valuation and more reliable price data.
• Entry, exit, sizing, and performance evaluation rules are not provided.

Tags

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