A Chinese Stock Screen Using Price Limits and Large-Order Flow

Summary

This Chinese A-share selection idea combines three conditions: daily amplitude above one percent, at least one limit-up event during the preceding twenty-five days, and large-order net flow above a stated threshold for at least three consecutive days. The article interprets the amplitude as a sign of active trading, a recent limit-up as evidence of market interest, and persistent positive large-order flow as a possible sign of institutional participation. Stocks passing the conditions enter a candidate pool; the post does not define a portfolio construction or exit rule.

The article provides indicator and Python examples, but their implementations do not cleanly match the stated selection logic: the examples use proxies and conditions that may not measure the described signals faithfully. It acknowledges that large-order flow data can be inaccurate and that sentiment is difficult to forecast. Suggested additions include other technical indicators, more reliable flow and sentiment data, fundamental variables, and position limits or diversification. No backtest results or evidence of profitability are reported, so the screen should be treated as an unvalidated hypothesis.

Key ideas

• The screen combines daily price amplitude, a recent limit-up event, and persistent positive large-order flow.
• The post treats these conditions as proxies for volatility, market interest, and capital participation.
• The provided code uses approximations that may not implement the stated signals consistently.
• Large-order flow can be unreliable, while sentiment can change unpredictably.
• The article recommends combining additional indicators and fundamentals with portfolio risk controls.

Tags

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