Screening Chinese Stocks by Price Range, Prior-Day Control, and Auction Buying

Summary

This post outlines a Chinese stock selection rule using three signals: a daily amplitude threshold, evidence described as main-force control on the prior day, and net buying by large participants during the opening auction. It also supplies indicator and Python examples intended to screen for shares meeting the conditions, though the examples use simplified proxies and do not fully demonstrate how the named signals are measured.

The accompanying discussion frames the rule as a way to combine price movement with money-flow and auction demand. It cautions that the method has limited fundamental analysis, may select companies with weak long-term prospects, and can encourage chasing overbought stocks. No backtest, performance data, or detailed validation is provided. The author suggests adding longer-term trend and company fundamentals, considering overall market conditions, and strengthening risk controls before using the screen.

Key ideas

• The selection rule combines price amplitude, prior-day main-force control, and positive net buying in the opening auction.
• The post provides code examples, but they use simplified conditions for some of the named signals.
• The approach does not provide substantial long-term fundamental analysis.
• The author warns about weak company prospects and the risk of chasing overbought shares.
• Suggested improvements include market context, longer-term trend measures, and company fundamentals.

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