Screening A-Shares for High Intraday Range and Afternoon Large-Order Inflows

Summary

This post describes a stock selection screen for Chinese equities. It selects stocks with a daily high-low range above a threshold, positive afternoon large-order net inflow, and exclusion of the STAR Market. It treats a wide range as a sign of greater price movement and interprets large-order inflow as a possible indication of concentrated buying pressure.

The post also cautions that volatile stocks and order-flow signals can entail elevated risk, and that excluding the STAR Market may omit technology companies. It suggests adding technical indicators and company fundamentals, then combining selected stocks into a diversified portfolio. The supplied indicator references and sample Python outline are implementation aids, not a documented backtest. No performance evidence, execution assumptions, or precise validation of the proposed signals is provided, so the rationale remains a hypothesis rather than an established predictive result.

Key ideas

• The screen combines a wide daily price range, afternoon large-order net inflow, and a market-board exclusion.
• The proposed rationale is that volatility creates opportunity and large-order inflow may signal buying pressure.
• The post identifies elevated risk from volatile selections and possible omissions caused by excluding the STAR Market.
• It recommends adding technical and fundamental filters, but supplies no backtest evidence for the screen.

Tags

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