Screening for High-Amplitude Stocks with Recent Limit-Up Moves

Summary

This stock screen combines three conditions: daily high-low amplitude above 1% relative to the prior close, a trading date in 2021, and at least one limit-up-like close during the preceding 19 sessions. The document gives example implementations in a Chinese market formula language and Python, using a close-price threshold of 1.098 times the previous close to identify the move. It describes high amplitude as a sign of volatility and a recent limit-up as a possible sign of market attention.

The screen is a rule-based selection method, not a tested trading strategy. No returns, benchmark comparison, or performance evidence are provided. The page warns that the selection can encourage chasing short-term price moves and overlook company fundamentals. It suggests adding financial and operating criteria, diversifying holdings, and adapting to broad market changes. The fixed 2021 date condition makes the example historical, while the stated threshold and rolling window may not capture market-specific limit rules or suit every use case.

Key ideas

• The screen requires daily amplitude above 1% relative to the previous close.
• It restricts qualifying observations to dates in 2021.
• A qualifying stock must have at least one close above 1.098 times its prior close within a 19-session window.
• The page presents the rules as a selection screen and provides no performance testing.
• It cautions that short-term price chasing can overlook fundamentals and concentration risk.

Tags

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