Stuart Kupinsky Insider Trading Activity
Stuart Kupinsky has been net-selling over the last 12 months with 0 purchases and 3 sales across 1 company.
MRCY is the most-traded position with 3 trades. The largest single transaction was a sale of MRCY for $191K on Feb 17, 2026.
Performance Scorecard
Forward stock performance after each transaction by Stuart Kupinsky. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | — | -7.9% | 33% | 3 |
| 90 days | — | -6.9% | 0% | 3 |
| 120 days | — | -8.0% | 0% | 2 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersMRCY · MERCURY SYSTEMS INC
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Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| MRCY | MERCURY SYSTEMS INC | 3 | $348K |
Other insiders at MERCURY SYSTEMS INC
5 other tracked filers at MRCY.