A-Share Stock Screening by Capital Inflow, Recent Limit-Ups, and Daily Return

Summary

This article proposes a Chinese equity screen combining three conditions: today’s increase in holdings as a share of circulating value exceeds 5%, the day’s return lies between -5% and 2.6%, and the stock has had more than two limit-up days over the prior ten days. The rationale is to find names showing buying interest and recent price activity while avoiding an extreme move on the screening day.

The article argues that capital inflows and repeated limit-ups may indicate attention, but also acknowledges these can be temporary and do not guarantee future gains. It suggests adding valuation, turnover, volume, technical, or fundamental measures and managing risk. Its example code is only a rough sketch: the stated return bounds are not both reflected in the condition, the price change is not clearly calculated as a percentage, and the limit-up count is represented through an unexplained difference. No backtest results or evidence of predictive performance are supplied, so the screen should be treated as an unvalidated idea.

Key ideas

• The screen combines an increase in holdings above 5%, a daily return range, and frequent recent limit-up sessions.
• The proposed rationale is to capture buying interest and heightened market attention.
• The article warns that inflows and limit-up frequency may reflect short-term behavior rather than durable prospects.
• Suggested additions include valuation, turnover, volume, technical, and fundamental measures.
• The sample code does not fully implement the stated filters, and no performance validation is shown.

Tags

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