Insider · SEC Form 4 filer
Casdin Capital, LLC
Companies
Where they file as an insider
Biolife Solutions (BLFS) 10% owner Latest filing Aug 15, 2025
Standard Biotools (LAB) Director, 10% owner Latest filing Feb 28, 2025
GeneDx (WGS) Director, 10% owner Latest filing Jun 4, 2024
2seventy bio (TSVT) Director Latest filing Mar 26, 2024
Track record
Did their buys beat the typical stock?
Open-market buys5
Quarters checked 6 months later2
Beat the typical stock —
Quarters too new to check0
Too soon to tell. 2 quarters have finished so far. We show a record once 3 have.
Standard Biotools (LAB) Bought Feb 28, 2025 · $5.16M · 4.82M shares Beat typical Mar 31, 2025 $1.08 → Sep 30, 2025 $1.30 · +20.4% (typical stock +7.3%)
GeneDx (WGS) Bought May 13–Jun 4, 2024 · $3.92M · 180,000 shares Beat typical Jun 30, 2024 $26.14 → Dec 31, 2024 $76.86 · +194.0% (typical stock +3.9%)
2seventy bio (TSVT) Bought Mar 26, 2024 · $204K · 40,000 shares Not counted Not counted. We have no fund price for this stock on both Mar 31, 2024 and Sep 30, 2024.
Each row is one stock in one quarter, however many buys it took. We take the stock's price at the end of that quarter and again 6 months later, and compare it with the typical stock over the same dates. Prices are quarter-end values from funds' 13F reports (the middle value across 3 or more funds), through Sep 30, 2026. Moves past 3 times up or down, mostly stock splits, are left out. How we tested this.
Past results. This is data, not advice.
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