Insider trading is one of the least known successful stock market anomalies. It's managed to beat the market by an average of 7 percentage points annually over the past 50 years. Several peer-reviewed academic studies covering different time periods document the profitability of insider trading.
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Insider Trading: Purchases
| Insider | Company | Symbol | Price | Amount | Relationship | Remaining Holdings | Date | Form 4 |
|---|---|---|---|---|---|---|---|---|
| KROS | $10.33 | 74,333 | Large Shareholder | 4,392,737 | 2025-04-09 | Filing | ||
| KROS | $10.33 | 500,000 | Large Shareholder | 4,318,404 | 2025-04-09 | Filing | ||
| KROS | $9.86 | 325,000 | Large Shareholder | 3,818,404 | 2025-04-09 | Filing | ||
| KROS | $9.40 | 16,365 | Large Shareholder | 743,558 | 2025-04-09 | Filing | ||
| KROS | $9.40 | 18,560 | Large Shareholder | 3,493,404 | 2025-04-09 | Filing |
Insider Trading: Sales
| Insider | Company | Symbol | Price | Amount | Relationship | Remaining Holdings | Date | Form 4 |
|---|---|---|---|---|---|---|---|---|
| OSTX | $1.39 | 10,000 | Large Shareholder | 2,746,199 | 2025-04-10 | Filing | ||
| OSTX | $1.35 | 50,012 | Large Shareholder | 2,756,199 | 2025-04-09 | Filing | ||
| VLGEA | $37.40 | 3,000 | Director | 48,961 | 2025-04-09 | Filing | ||
| AMPS | $4.96 | 15,480 | 2,286,791 | 2025-04-07 | Filing | |||
| AMPS | $4.95 | 20,923 | 2,302,271 | 2025-03-31 | Filing |