Screening Small Profitable Stocks by Volatility and Auction Order Flow

Summary

This Chinese equity screening proposal combines daily price range, company size and profitability, and buy-side order flow during the opening auction. It targets stocks with an amplitude above 1%, capitalization no greater than 10 billion yuan, and positive profits, then looks for large and extra-large buy orders whose combined volume exceeds 7 million shares. The accompanying code adds further filters based on predicted earnings growth, valuation ratios, and cash flow, though these implementation details do not fully align with the opening description.

The note argues that auction activity may help identify rapid changes in liquidity and price, but warns that the rules omit important business and financial context, can be vulnerable to misleading order activity, and may be difficult to execute at favorable prices. It recommends broader fundamental and industry assessment and validation with historical data and dynamic adjustment. No backtest, return figures, or empirical support are presented, so the screen should be read as a proposed research starting point rather than a demonstrated strategy.

Key ideas

• The initial screen combines price amplitude, a market capitalization ceiling, and positive profits.
• It uses large and extra-large buy orders during the opening auction as a flow signal.
• The sample code adds earnings-growth, valuation, and cash-flow filters.
• The note identifies manipulation, omitted fundamentals, and auction execution difficulty as risks.
• It provides no backtest evidence for the proposed rules.

Tags

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