Screening Chinese Large-Cap Stocks for Afternoon Buying Flows

Summary

This stock-selection idea combines three filters: a daily trading range above one percent of the previous close, a stock code beginning with 60, and a positive afternoon large-order flow signal. The code example operationalizes the range and code filters, then uses intraday data to retain stocks with positive net inflow during an afternoon window. The accompanying indicator example estimates buying pressure using volume weighted by typical price and compares positive-close activity with negative-close activity.

The post presents the screen as a way to find volatile Shanghai-listed shares receiving afternoon buying interest, but it gives no backtest, performance figures, or evidence that the signal predicts future returns. It explicitly warns that large afternoon flows alone can be misleading, high volatility can increase losses, and the market-code restriction excludes other stocks. It suggests combining the screen with other technical or fundamental measures and examining flows across multiple intraday intervals. Data definitions and implementation details may vary across platforms, so the examples do not establish a validated trading system.

Key ideas

• The screen requires a daily range above one percent of the previous close and a code beginning with 60.
• It seeks stocks with positive afternoon net inflow as a proxy for buying interest.
• The indicator example compares volume-weighted activity on rising and non-rising bars.
• The post provides no historical performance test or evidence of predictive power.
• It recommends adding other signals and risk controls to address noisy flows and volatility.

Tags

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