Ambrose Kristen Insider Trading Activity
Ambrose Kristen has been net-selling over the last 12 months with 0 purchases and 5 sales across 1 company.
VRTX is the most-traded position with 5 trades. The largest single transaction was a sale of VRTX for $762K on Feb 17, 2026.
Performance Scorecard
Forward stock performance after each transaction by Ambrose Kristen. 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 | — | +5.6% | 80% | 5 |
| 90 days | — | +8.3% | 100% | 5 |
| 120 days | — | +2.8% | 80% | 5 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersVRTX · VERTEX PHARMACEUTICALS INC / MA
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Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| VRTX | VERTEX PHARMACEUTICALS INC / MA | 5 | $2.0M |
Other insiders at VERTEX PHARMACEUTICALS INC / MA
10 other tracked filers at VRTX.