Bremner Thomas S Insider Trading Activity
Bremner Thomas S has been net-buying over the last 12 months with 6 purchases and 0 sales across 1 company.
BLLN is the most-traded position with 6 trades. The largest single transaction was a purchase of BLLN for $1.1M on Nov 7, 2025.
Performance Scorecard
Forward stock performance after each transaction by Bremner Thomas S. 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 | +74.4% | — | 100% | 6 |
| 90 days | +41.9% | — | 100% | 6 |
| 120 days | +20.2% | — | 100% | 6 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersBLLN · BillionToOne, Inc.
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | Δ OWNED | ROLE | FILING |
|---|---|---|---|---|---|---|---|---|
Nov 7, 2025 | BLLN | Buy | 4,016 | $60.00 | $241K | +2.6% | Director | |
Nov 7, 2025 | BLLN | Buy | 4,084 | $60.00 | $245K | +2.6% | Director | |
Nov 7, 2025 | BLLN | Buy | 3,462 | $60.00 | $208K | +2.0% | Director | |
Nov 7, 2025 | BLLN | Buy | 5,446 | $60.00 | $327K | +2.0% | Director | |
Nov 7, 2025 | BLLN | Buy | 6,867 | $60.00 | $412K | +2.9% | Director | |
Nov 7, 2025 | BLLN | Buy | 17,791 | $60.00 | $1.1M | +2.6% | Director |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| BLLN | BillionToOne, Inc. | 6 | $2.5M |