Screening Chinese Stocks for Volatility, Afternoon Inflows, and Recent Limit-Ups

Summary

This note proposes a Chinese equity screen combining three signals: a daily high-low range above one percent, afternoon large-order net inflows, and at least one limit-up event in the past month. It interprets the combination as a way to find volatile stocks with buying interest and recent price momentum. The document provides indicator-style expressions and a partial Python example for filtering market data; the code includes a stock-universe restriction and rolling calculations, but does not present a complete, validated implementation.

The note reports no backtest or return evidence. It warns that the rules are simple, omit fundamentals and industry conditions, may attract crowded buying, and can lose relevance as economic or policy conditions change. It suggests adding valuation, profitability, industry, and macroeconomic measures. These are proposed improvements rather than tested enhancements, so the screen should be treated as a hypothesis for further evaluation.

Key ideas

• The proposed screen combines a daily range above one percent, afternoon large-order inflows, and a recent limit-up event.
• The criteria are intended to capture volatility, buying interest, and short-term momentum.
• The document gives indicator expressions and a partial data-filtering example, but no performance results.
• It identifies crowding and the omission of fundamentals and industry trends as limitations.

Tags

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