What Is How to Use Insider Buying as an Investment Signal?
Insider buying occurs when company executives or directors purchase shares with their own money. Academic research shows that aggregate insider buying predicts positive stock returns over 6-12 month horizons, particularly when multiple insiders buy simultaneously and purchase amounts are significant relative to their compensation.
Why It Matters
The signal is strongest when insiders buy after price declines — suggesting they view the drop as temporary undervaluation rather than fundamental deterioration. Cluster buying (3+ insiders buying within 30 days) is a stronger signal than isolated purchases by a single executive.
How LyraIQ Approaches This
LyraIQ's insider buying tracker monitors Form 4 filings in real-time, calculating a composite insider sentiment score based on purchase frequency, dollar amounts, and insider roles. The system filters out routine purchases (like dividend reinvestment plans) and highlights cluster buying events with high statistical significance.
Practical Steps
- Monitor Form 4 filings for open-market purchases by executives and directors
- Focus on cluster buying events with 3+ insiders purchasing within 30 days
- Evaluate purchase size relative to insider compensation
- Ignore automatic purchases from dividend reinvestment or 10b5-1 plans
- Combine insider buying with DSE trust score > 60 for validation