Screening Stocks by Daily Amplitude, Shareholder Control, and Price

Summary

This Chinese stock-selection example filters shares using three conditions: daily amplitude above 1, a controlling-shareholder measure above 21, and a closing price below 12. Its accompanying indicator and Python examples show how to combine the filters and rank qualifying stocks by a heat index. The article frames the price condition as a way to find cheaper stocks and the control measure as an additional selection factor.

The post warns that low-priced stocks may have weak business quality and greater volatility. It recommends reviewing company fundamentals and controlling the upper price bound to reduce selection risk, but provides no backtest, performance evidence, or precise justification for the thresholds. The indicator and Python examples also express the control condition differently, so their implementation would need careful validation before use.

Key ideas

• The screen combines daily amplitude, a controlling-shareholder measure, and closing price.
• The Python example ranks qualifying stocks by a heat index and returns a limited list.
• The article cautions that low share prices can accompany weak fundamentals and higher volatility.
• No performance results or empirical rationale for the thresholds are provided.

Tags

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