A Chinese Stock Screen Using Volatility, Price Surges, and Auction Buying

Summary

The post proposes a short-term Chinese equities screen combining price range, recent large daily gains, and buy volume from large and extra-large orders during the opening auction. Its revised selection logic also requires market capitalization above a stated threshold. The article gives indicator-style and Python examples, though their calculations use proxies such as range versus average true range, price change, volume, and volume-adjusted price movement rather than demonstrating that they exactly reproduce the described auction data.

The rationale is that unusually large price moves and auction buying may signal near-term attention and liquidity. The post warns that large-order volume alone does not prove positive market expectations, that volatile or falling markets can magnify losses, and that restrictive filters can exclude fundamentally attractive companies. It suggests adding fundamental and industry information and adjusting thresholds, but supplies no backtest, performance evidence, or portfolio and risk rules. The code examples should therefore be treated as illustrative screening logic, not validated trading results.

Key ideas

• The screen combines price amplitude, a recent large daily gain, and opening-auction large-order buying.
• The revised version adds a minimum market-capitalization condition.
• The article provides formula and Python examples using price and volume fields as proxies.
• The post identifies false signals, market-wide declines, and restrictive filters as risks.
• No backtest results or execution and position-sizing rules are provided.

Tags

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