Keith Crandell is Director & 10% Owner at Quanterix Corp (QTRX). They have made 11 open-market trades across 9 companies since 2015, most recently 2026-07-01.
8 open-market purchases totalling $34.6M since 2015, against 3 sales. Across 8 scored buys the stock is up 14.8% at ninety days, and 13.2 points ahead of the S&P over the same stretch.
8 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 50% | 63% | 38% |
| Avg Move | +1.0% | +9.0% | +14.8% |
| Alpha | +3.7% | +7.3% | +13.2% |
| Scored | 8 | 8 | 8 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| BOLD | SELL | 2026-07-01 | 2026-07-06 | $2.49 | $40K | +0.2% | +12.7% | +5.2% |
| TWST | SELL | 2021-08-12 | 2021-08-13 | $107.01 | $9.6M | +12.9% | +16.5% | +16.9% |
| DALS | BUY | 2021-07-30 | 2021-08-03 | $10.00 | $16.0M | +0.2% | -1.4% | -1.5% |
| MASS | BUY | 2020-12-22 | 2020-12-22 | $20.00 | $6.0M | +1.7% | +9.8% | -9.9% |
| TWST | SELL | 2020-12-07 | 2020-12-09 | $103.40 | $15.5M | +9.7% | +20.1% | -9.8% |
| CDAK | BUY | 2020-10-16 | 2020-10-20 | $15.00 | $3.5M | -26.6% | -30.3% | +142.0% |
| TWST | BUY | 2018-11-02 | 2018-11-06 | $14.00 | $1.1M | +73.8% | +92.2% | +43.4% |
| QTRX | BUY | 2017-12-11 | 2017-12-13 | $15.00 | $4.0M | +11.5% | +9.7% | +11.0% |
| XCOM | BUY | 2015-11-17 | 2015-11-18 | $5.00 | $1.5M | -12.3% | +3.6% | -30.8% |
| IOTS | BUY | 2015-10-26 | 2015-10-28 | $5.00 | $2.0M | -14.4% | +1.1% | -23.2% |
| PULM | BUY | 2015-06-16 | 2015-06-17 | $6.88 | $501K | -25.8% | -12.6% | -12.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
| IOTS |
| 25,396 |
| $318K |
| CDAK | 2,268,903 | $129K |
| BOLD | 16,000 | $37K |
| KYTH | 2,105,740 | — |
| Total | $103.0M |
Shares reported on the most recent Form 4, priced at the 2026-07-06 close. 1 holding could not be priced and is excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.