Chinese Stock Screening with Amplitude, Control, and a Code Prefix

Summary

This post proposes screening Chinese stocks for amplitude above 1, a current control indicator above 21, and identifiers beginning with 60. It frames the first two filters as ways to find volatile stocks with greater market influence, while acknowledging that the identifier prefix is merely a listing-based filter and says little about a company’s quality or price behavior. The post’s final logic adds a top-quartile ranking by stock gain and suggests combining the screen with other measures. It also provides example formula references, though the described ranking and implementation are not clearly reconciled.

The post offers no backtest results or evidence that the criteria predict returns. Its stated risks include dependence on market data, omissions and weak selections, and the possibility that the prefix filter may not suit a given market or period. It recommends incorporating fundamental and technical information and accounting for trading costs before using the screen.

Key ideas

• The initial screen combines amplitude above 1, a control reading above 21, and a stock identifier beginning with 60.
• The post’s revised selection logic also ranks stocks by gains and keeps the top quarter.
• A stock code prefix is a market-universe filter rather than evidence about company fundamentals.
• The author notes that the screen may omit strong stocks or select weak ones.
• No performance evidence is supplied, and the post advises considering costs and additional signals.

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