Screening for Seven Down Days, Moderate Turnover, and Buy-Side Volume

Summary

This Chinese stock-selection rule looks for shares with seven consecutive declining sessions, turnover between three and twelve percent, and outside volume exceeding inside volume by a stated ratio. The text presents these conditions as a combination of liquidity, trading activity, and weak recent price sentiment. It also gives example query and Python implementations, with the code adding a filter for stock codes beginning with particular digits.

The intended idea appears to be screening for stocks under sustained selling pressure where trading activity and the balance of outside to inside volume may provide additional context. The article warns that the screen can miss sharp oversold rebounds and does not account for company fundamentals or industry conditions. It recommends combining technical and fundamental measures and considering the broader market trend. No backtest, return series, or evidence that the conditions predict reversals is presented, and the code’s added market filter is not reconciled with the general rule description.

Key ideas

• The screen requires seven consecutive declining sessions and turnover within a specified range.
• It also requires outside volume to exceed inside volume by the stated threshold.
• The accompanying code adds a stock-code prefix filter that is not explained in the general rule.
• The article notes that the screen may miss oversold rebounds and omits important company and industry factors.
• No backtest or predictive evidence is supplied.

Tags

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