A-Share Screen for High Amplitude, Fixed Price, and Limit-Down Opens

Summary

The document describes a short-term A-share stock screen combining daily price amplitude, a specified closing price, and a prior-session opening auction price near the daily limit down. Its stated rationale is that large price swings identify volatile shares, while a limit-down auction may indicate continued selling pressure. The article also suggests adding fundamental or valuation measures and sorting candidates by recent price movement or volatility.

It gives example indicator and Python implementations, but the examples do not consistently represent the stated rules: the heading and prose differ on the precise target price, and the code's filters do not clearly implement the described prior-day auction condition. No backtest, performance results, or validation is presented. The article itself warns that a focus on short-term declines can miss longer-term value and that trading on price moves alone carries risk. Treat the screen as an unvalidated illustration that would need careful data alignment and testing before use.

Key ideas

• The screen combines price amplitude, a target price, and a prior-session opening auction near limit down.
• The proposed rationale is to identify volatile shares facing strong short-term selling pressure.
• The article suggests adding fundamental or valuation measures to broaden the selection criteria.
• The provided examples contain inconsistencies with the prose and offer no performance evidence.

Tags

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