A-Share Screen for Price Range, Daily Amplitude, and Profit Growth

Summary

This note presents an A-share stock screen that combines daily price amplitude, a specified closing price, and year-over-year growth in net profit attributable to parent-company shareholders. The stated selection criteria are amplitude above 1%, a closing price of 18.5 yuan, and profit growth above 20% and no more than 100%. It includes an example indicator formula and a Python implementation using market and financial data.

The rationale is to combine price movement, price level, and reported profitability. The note does not provide a backtest or evidence that the filters produce attractive returns. It cautions that the rule omits other financial and operating factors, does not account for industry differences, and relies on profit growth that may not fully describe business performance. The Python example also contains additional data checks and filtering logic, so its implementation does not map cleanly to the brief stated screen. Treat the examples as a starting point requiring careful review of definitions and data handling.

Key ideas

• The stated screen requires daily amplitude above 1%, a closing price of 18.5 yuan, and parent-company net profit growth above 20% and at most 100%.
• The note supplies both an indicator formula and a Python example using financial and market data.
• The selection rationale combines price movement, price level, and reported profitability.
• The note provides no backtest evidence and warns that important company and industry factors are omitted.
• The Python example adds filters beyond the stated criteria, so its behavior should be checked against the intended screen.

Tags

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