Screening Stocks by Price Range, Opening Gain, and RSI

Summary

This A-share stock screen combines three short-term filters: amplitude above 1, a 9:25 a.m. gain below 6%, and RSI below 65. The article frames amplitude as a measure of volatility, the early price-change condition as a way to avoid stocks with large opening gains, and RSI as an overbought or oversold indicator. It also includes example formulas and a Python outline for sourcing prices and filtering stocks.

The author cautions that the screen focuses on short-term price behavior and does not account for fundamentals such as valuation, profitability, or broader market conditions. RSI may also lag fast price moves. The examples are not accompanied by backtest results, and the code’s amplitude calculation and data handling are not clearly aligned with the stated threshold. The screen is best read as a proposed selection rule, not evidence that it identifies profitable trades.

Key ideas

• The screen selects stocks with amplitude above 1, a 9:25 a.m. gain below 6%, and RSI below 65.\nThe conditions combine a volatility filter, an early-session price filter, and a technical oscillator.\nThe article warns that the rule omits fundamental and broader market information.\nRSI can lag during rapid price movements.\nNo backtest evidence is given, and the example code may not precisely implement the stated filters.

Tags

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