Screening Mid-Cap Main-Board Stocks by Turnover and a Rising 30-Day Average

Summary

This stock-selection rule targets main-board shares with turnover between 3% and 12%, circulating market value between 5 billion and 10 billion yuan, and a 30-day moving average that is rising. It combines a liquidity or trading-activity range and a size band with a short trend filter. The document gives a formula and a Python example that compare the latest 30-day average with its prior value.

The stated rationale is to identify stocks with recent market activity and an improving price trend. The article notes that its multiple conditions may exclude otherwise attractive shares, while unusual price movements can distort the moving average. It suggests adding technical or fundamental filters, but provides no backtest, performance measurements, or detailed evidence that the selection criteria improve returns. Results may also depend on how the market data fields and share universe are defined.

Key ideas

• The screen requires turnover in a specified band and circulating market value between 5 billion and 10 billion yuan.
• A rising 30-day moving average serves as the trend condition.
• The method can miss stocks when its filters conflict or price anomalies distort the average.
• The document supplies formula and code examples but no performance evidence.

Tags

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