Casdin Partners Master Fund, L.P. is 10% Owner at BIOLIFE SOLUTIONS INC (BLFS). They have made 12 open-market trades across 6 companies since 2019, most recently 2026-05-21.
CIK 0001534265
11 open-market purchases totalling $67.4M since 2019, against 1 sale. Across 11 scored buys the stock is up 10.9% at ninety days, and 5.7 points ahead of the S&P over the same stretch.
11 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 82% | 55% | 55% |
| Avg Move | +7.0% | +3.8% | +10.9% |
| Alpha | +6.0% | +1.9% | +5.7% |
| Scored | 11 | 11 | 11 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| BLFS | SELL | 2026-05-19 | 2026-05-21 | $23.44 | $28.1M | +9.7% | +0.5% | +47.1% |
| LAB | BUY | 2025-11-13 | 2025-11-17 | $1.22 | $1.1M | +19.0% | +23.0% | -11.1% |
| LAB | BUY | 2025-09-09 | 2025-09-11 | $1.29 | $129K | +2.2% | -4.4% | +8.9% |
| LAB | BUY | 2025-08-22 | 2025-08-26 | $1.25 | $658K | +3.0% | -2.3% | +7.6% |
| WGS | BUY | 2024-03-04 | 2024-03-06 | $8.74 | $358K | +10.5% | +14.3% | +175.7% |
| BLFS | BUY | 2023-05-16 | 2023-05-18 | $21.27 | $2.2M | +4.2% | +7.7% | -47.9% |
| VERV | BUY | 2021-06-21 | 2021-06-22 | $19.00 | $20.9M | +29.0% | +34.1% | +33.2% |
| DBTX | BUY | 2021-02-17 | 2021-02-19 | $18.00 | $10.3M | -9.8% | -30.2% | -56.6% |
| BLFS | BUY | 2020-07-01 | 2020-07-02 | $14.50 | $18.8M | +6.1% | +11.8% | +54.0% |
| BLFS | BUY | 2020-05-22 | 2020-05-26 | $10.50 | $10.0M | +1.0% | +0.2% | +23.5% |
| BLFS | BUY | 2019-11-19 | 2019-11-21 | $15.42 | $617K | -2.3% | -0.5% | -1.7% |
| FULC | BUY | 2019-07-22 | 2019-07-22 | $15.84 | $2.2M | +14.0% | -12.1% | -65.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.