Screening Chinese Stocks by Volatility, Recent Limit-Up, and Afternoon Flows

Summary

This Chinese A-share screening idea combines three conditions: daily amplitude above 1%, at least one limit-up event in the prior 25 days, and afternoon large-order net inflow. The text presents volatility as a sign of potential movement, a recent limit-up as evidence of market interest, and large-order buying as a possible sign of institutional attention. It also includes sample indicator logic and Python-style implementation references, though the described flow condition relies on proxy measurements rather than a direct intraday large-order flow series.

The article cautions that the screen omits company fundamentals and broad market direction, while large-order flow measures can be difficult to interpret or manipulate. It suggests adding fundamental and sector checks, considering overall market conditions, and filtering flow amounts. No performance results or backtest evidence are provided, so the screen is a hypothesis for further testing rather than a demonstrated strategy.

Key ideas

• The screen requires amplitude above 1%, a limit-up in the prior 25 days, and afternoon large-order net inflow.
• The article treats volatility, recent price strength, and buying flow as indicators of potential interest.
• The sample logic approximates some conditions with price and volume data rather than directly measuring all stated signals.
• Fundamentals, market direction, and possible manipulation of order-flow data are identified as limitations.
• The document provides no performance evidence for the proposed screen.

Tags

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