Screening for Sharp Declines with Institutional Buying

Summary

This proposed stock selection approach looks for shares with price amplitude above a threshold, a daily percentage decline within a narrow band, and evidence of institutional buying. The article describes the combination as a way to capture volatile stocks that have fallen sharply while institutions appear to be buying. Its illustrative implementation filters a market-wide stock list, excludes certain listings and special-treatment shares, then checks daily changes against institutional transaction data.

The post notes that institutional positioning can be wrong and that company-specific events, losses, or operational problems may continue to weigh on a stock. It suggests adding trading volume and valuation measures, and making the filters adaptable to market conditions. It offers no backtest or evidence that institutional purchases predict a rebound; the example’s data source and dated institutional flow sample also limit how broadly its implementation can be applied.

Key ideas

• The screen combines a volatility condition, a bounded daily loss, and reported institutional buying.
• The example filters out selected listing categories and special-treatment stocks before applying the conditions.
• Institutional buying may be mistimed and does not guarantee that a falling stock will recover.
• Volume and valuation measures are suggested as additional filters.
• No performance test is presented, and the illustrative flow data is tied to a particular date.

Tags

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