A Chinese Stock Screen for Recent Limit-Up Moves and Positive Returns

Summary

This post proposes a stock-selection rule based on intraday amplitude, a recent sequence of limit-up sessions, and a positive return. It interprets large amplitude as a sign of activity, repeated limit-ups as evidence of buying interest, and positive return as a way to exclude candidates that did not retain gains. The author also identifies short-term return risk and the possibility that selected shares are expensive because the screen omits fundamental measures.

A suggested refinement adds valuation measures and a correlation filter relating the stock’s returns to a broad-market index over a short window. The post includes formula and Python examples, but the examples do not fully align: the prose describes yesterday’s three consecutive limit-ups, while the displayed conditions use prior closes and may not directly establish that pattern. The sample implementation also does not report a backtest or account for transaction costs, liquidity, survivorship, or execution constraints. The screen is therefore a research idea, not evidence of a validated strategy.

Key ideas

• The proposed screen combines amplitude, recent consecutive limit-up behavior, and positive returns.
• The post flags short-term dependence and missing fundamental valuation checks as risks.
• A market-index correlation condition is suggested as a way to account for broad-market movement.
• The prose, formula, and Python example may not encode the same consecutive limit-up condition.
• No backtest or trading-cost analysis is provided.

Tags

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