Stock Screening by Daily Position Increases and Historical Limit-Ups

Summary

This proposed stock screen selects shares with today’s position increase above 5% and at least two limit-up sessions over the past 500 days. The post interprets a rise in position holdings as possible institutional buying interest and the historical limit-ups as evidence of strong past market activity. Its suggested refinements include market capitalization, earnings capacity, and financial condition filters, intended to add information about company quality and risk.

The document provides no backtest, data source definitions, or evidence that the screening conditions predict future returns. It cautions that the method depends heavily on past price behavior and investor activity, both of which can change with market conditions; an extreme historical run may also leave a stock overvalued. The code is incomplete and includes proposed filters and ranking steps without defining their calculations. Accordingly, the stated rules are a screening idea with substantial implementation and validation gaps.

Key ideas

• The core screen requires a daily position increase above 5% and at least two limit-up sessions in 500 days.
• The post treats position increases as a possible signal of institutional interest and prior limit-ups as a sign of past market strength.
• It proposes adding market-capitalization, earnings, and financial-condition filters.
• The method relies on historical behavior that may not persist, and the document gives no performance evidence.
• The sample code is incomplete and leaves key filtering and ranking calculations undefined.

Tags

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