A股选股：换手率、主动买卖比与K线实体筛选

Summary

This article describes a Chinese stock screening rule combining turnover, order-flow proxies, and candle size. It selects stocks with turnover between 3% and 12%, an external-to-internal trading volume ratio above 1.3, and a candlestick body length below 20. The accompanying explanation presents the turnover and buy-versus-sell balance as activity filters and the small candle body as a way to find relatively calm stocks.

The article warns that a technical rule can stop working as market conditions change and suggests adding indicators such as MACD or RSI and refining the rule through historical testing. It offers formula and Python examples, but no backtest results or evidence that the selected conditions predict returns. The examples also contain potentially inconsistent variable definitions, so the intended measurements and units should be verified before implementation.

Key ideas

• The screen combines turnover between 3% and 12%, an external-to-internal volume ratio above 1.3, and a candle body below 20.
• The stated rationale is to combine trading activity with a filter for relatively quiet price action.
• The article identifies changing market conditions as a risk to technical screening rules.
• It proposes adding indicators such as MACD or RSI and tuning conditions with historical tests.
• No performance results are supplied, and example formulas may not consistently represent the stated inputs.

Tags

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