A-Share Screen for High Daily Amplitude and Positive P/E

Summary

This Chinese-language post proposes a stock selection filter combining daily price amplitude above 1%, a 2021 trading-date condition, and a positive price-to-earnings ratio. The author frames high amplitude as a sign of volatility and possible return potential, while positive P/E is treated as a basic profitability screen. The resulting stocks would enter a candidate pool; the post does not specify portfolio weights, holding periods, or a complete execution plan.

The post includes example indicator and Python logic, along with caveats: profitable companies can still decline, and high amplitude brings greater risk. It suggests adding other fundamental measures and using stop-loss and take-profit levels. No backtest results or evidence that the filters improve returns are reported. The date condition is historical and the code examples may not align fully in their amplitude denominators, so the screen would need careful data and implementation checks before any evaluation.

Key ideas

• The proposed screen combines daily amplitude above 1%, a 2021 date filter, and positive P/E.
• The selected stocks are intended for a candidate pool rather than a fully specified portfolio.
• High amplitude may signal greater price movement, but it also increases exposure to volatility.
• A positive P/E does not prevent a stock from falling in price.
• The post offers no backtest evidence and recommends adding fundamentals and risk controls.

Tags

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