Screening Large-Cap Chinese Stocks by Amplitude and Lower Lows

Summary

This post describes a Chinese equity screen using three conditions: price amplitude above a threshold, circulating market capitalization above 10 billion yuan, and today’s low below yesterday’s low. It presents these as filters for volatility, company scale, and recent price movement. Example indicator logic and a partial Python sketch show how to retrieve stock data and compare lows, although the code’s coverage of the amplitude and fundamental checks is incomplete.

The post characterizes the result as a way to find short-term speculative opportunities, but supplies no backtest, performance statistics, or rules for entering, sizing, or exiting positions. It warns that technical measures may be distorted by sentiment and that omitting company fundamentals can select firms with weak long-term prospects. The suggestion to add valuation, profitability, and other technical measures is an optimization idea rather than tested evidence. The text also describes the lower low as a possible sign that a decline is slowing, though a lower daily low alone does not establish that interpretation.

Key ideas

• The screen requires high amplitude, circulating market capitalization above the stated threshold, and a lower low than the prior day.
• The post provides sample indicator logic and a partial data-retrieval implementation.
• No backtest results or full trade-management rules are supplied.
• The screen omits fundamental analysis and may capture short-lived speculative activity.
• A lower daily low does not by itself demonstrate that a decline is slowing.

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