Screen Chinese A-Share Stocks by Daily Range, Reversal, and Code Prefix

Summary

This stock-selection idea screens shares whose codes begin with 60, whose high-to-low daily range exceeds 1%, and that meet a reversal or “wraparound” candlestick condition. The article gives formula and Python examples, but the definitions are not fully aligned: the prose refers to a pattern within the recent three days, while the code examples use differing price and pattern checks. The precise intended signal therefore needs clarification before implementation.

The author suggests that restricting the code prefix may avoid some smaller or less liquid stocks, but provides no evidence that it does so or that the combined filter predicts returns. The article flags the narrow universe and lack of market-risk and fundamental filters, and suggests adding trend, momentum, industry, or size considerations. It supplies no backtest, transaction-cost analysis, or out-of-sample results, so the screen should be treated as an unvalidated selection rule.

Key ideas

• The screen combines a daily high-to-low range above 1%, a reversal pattern, and a stock code beginning with 60.
• The article describes a recent three-day reversal condition, but its formula and Python examples do not clearly implement the same rule.
• A prefix-based universe restriction may limit diversification, and the article gives no evidence for the claimed liquidity effect.
• Market context, company fundamentals, industry, and size are suggested as possible additional filters.
• No backtest or performance evidence is provided.

Tags

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