Casdin Capital, LLC
13F filer · CIK 0001534261Reported Aug 14, 2026
Net buyer this quarter
13F portfolio value$2BU.S. long equity reported on 13F
Positions436 new · 3 closed
Net flow last quarter+$55.5MBuys minus sells
Top 10 positions weight77.4%Concentration
Holdings
13F · last 4 quarters freeScroll for earlier quarters
| Company | Value | % of portfolio | % of company | POSITION CHANGE qoq % | First reported |
|---|---|---|---|---|---|
| Q2 2026Reported Aug 14, 202643 positions | |||||
| $483M | 24.16% | 1.20% | Not reported | Q1 2020 | |
| $300M | 15.02% | 7.34% | +11.2% | Q3 2020 | |
| $254M | 12.74% | 12.44% | +23.3% | Q3 2021 | |
| $131M | 6.58% | 9.52% | -21.9% | Q2 2018 | |
| $93.2M | 4.66% | 0.35% | Not reported | Q4 2015 | |
| $73M | 3.66% | 22.64% | Not reported | Q2 2023 | |
| $63.1M | 3.16% | 0.55% | Not reported | Q1 2023 | |
| $52.6M | 2.63% | 1.28% | +11.1% | Q4 2018 | |
| $48.6M | 2.43% | 9.76% | +8.8% | Q4 2023 | |
| $46.3M | 2.32% | 1.31% | Not reported | Q4 2020 | |
| $40.3M | 2.02% | 0.82% | -53.9% | Q4 2025 | |
| $36.6M | 1.83% | 0.55% | +90.0% | Q4 2025 | |
| $34.2M | 1.71% | 2.40% | +59.4% | Q1 2026 | |
| $32.8M | 1.64% | 1.07% | +108.7% | Q2 2024 | |
| $27.8M | 1.39% | 0.14% | -41.3% | Q4 2021 | |
| $25.2M | 1.26% | 1.52% | +11.2% | Q1 2025 | |
| $24.3M | 1.21% | Not reported | Not reported | Q1 2025 | |
| $22.6M | 1.13% | 0.06% | Not reported | Q4 2015 | |
| $22.1M | 1.11% | 1.00% | Not reported | Q3 2020 | |
| $20.1M | 1.01% | 4.54% | Not reported | Q1 2026 | |
| $18.5M | 0.93% | 1.21% | Not reported | Q4 2024 | |
| $17.7M | 0.88% | 0.53% | New | Q2 2026 | |
| $17.6M | 0.88% | 0.89% | New | Q2 2026 | |
| $16.2M | 0.81% | 0.34% | Not reported | Q1 2024 | |
| $14.4M | 0.72% | Not reported | +132.1% | Q1 2026 | |
| $11.7M | 0.58% | 1.75% | Not reported | Q4 2022 | |
| $11.3M | 0.56% | 0.62% | Not reported | Q3 2021 | |
| $10.6M | 0.53% | 0.05% | Not reported | Q4 2025 | |
| $8.45M | 0.42% | 0.45% | Not reported | Q3 2018 | |
| $6.91M | 0.35% | 0.22% | New | Q2 2026 | |
| $6.01M | 0.30% | 0.25% | Not reported | Q3 2022 | |
| $5.25M | 0.26% | 0.02% | Not reported | Q3 2022 | |
| $4.75M | 0.24% | 0.17% | Not reported | Q1 2026 | |
| $4.5M | 0.23% | 0.22% | Not reported | Q2 2021 | |
| $3.01M | 0.15% | 0.68% | Not reported | Q2 2021 | |
| $2.43M | 0.12% | 0.64% | Not reported | Q2 2024 | |
| $2.15M | 0.11% | 0.35% | Not reported | Q3 2025 | |
| $1.44M | 0.07% | 0.45% | Not reported | Q1 2016 | |
| $1.22M | 0.06% | 0.23% | Not reported | Q1 2017 | |
| $1.19M | 0.06% | 0.05% | New | Q2 2026 | |
| $607K | 0.03% | 0.03% | Not reported | Q2 2021 | |
| $362K | 0.02% | 0.06% | Not reported | Q3 2021 | |
| $268K | 0.01% | 0.16% | Not reported | Q3 2021 | |
| Q1 2026Reported May 15, 202640 positions | |||||
| $251M | 18.98% | 1.29% | Not reported | Q1 2020 | |
| $193M | 14.62% | 10.14% | Not reported | Q3 2021 | |
| $143M | 10.86% | 7.62% | +10.9% | Q3 2020 | |
| $114M | 8.61% | 12.20% | Not reported | Q2 2018 | |
| $81.6M | 6.18% | 22.76% | Not reported | Q2 2023 | |
| $65.3M | 4.95% | 0.35% | -11.7% | Q4 2015 | |
| $56.6M | 4.29% | 0.55% | Not reported | Q1 2023 | |
| $48.3M | 3.66% | 1.78% | +62.5% | Q4 2025 | |
| $35.3M | 2.68% | 1.16% | Not reported | Q4 2018 | |
| $32.2M | 2.44% | 1.31% | -15.6% | Q4 2020 | |
| $29.1M | 2.20% | 0.24% | -17.1% | Q4 2021 | |
| $28.6M | 2.17% | 9.10% | +9.7% | Q4 2023 | |
| $24.8M | 1.88% | 0.06% | Not reported | Q4 2015 | |
| $22.7M | 1.72% | 1.53% | Not reported | Q1 2025 | |
| $17.2M | 1.30% | 0.29% | +34.6% | Q4 2025 | |
| $16.3M | 1.23% | 4.54% | New | Q1 2026 | |
| $14.5M | 1.10% | Not reported | +81.8% | Q1 2025 | |
| $14.5M | 1.10% | 1.13% | +116.7% | Q3 2020 | |
| $14.4M | 1.09% | 0.17% | New | Q1 2026 | |
| $13.3M | 1.01% | Not reported | Not reported | Q3 2025 | |
| $13.3M | 1.01% | 1.23% | Not reported | Q4 2024 | |
| $11.9M | 0.90% | 0.56% | Not reported | Q2 2024 | |
| $11M | 0.83% | 1.75% | Not reported | Q4 2022 | |
| $10.2M | 0.77% | 1.53% | New | Q1 2026 | |
| $9.8M | 0.74% | 0.05% | Not reported | Q4 2025 | |
| $8.9M | 0.67% | 0.35% | Not reported | Q1 2024 | |
| $8.39M | 0.64% | 0.85% | New | Q1 2026 | |
| $4.55M | 0.34% | 0.29% | Not reported | Q3 2022 | |
| $4.16M | 0.31% | 0.17% | New | Q1 2026 | |
| $3.81M | 0.29% | 0.02% | Not reported | Q3 2022 | |
| $3.73M | 0.28% | Not reported | New | Q1 2026 | |
| $3.06M | 0.23% | 0.22% | +116.3% | Q2 2021 | |
| $2.92M | 0.22% | 0.64% | Not reported | Q3 2021 | |
| $2.78M | 0.21% | 0.68% | Not reported | Q2 2021 | |
| $2.53M | 0.19% | 0.35% | Not reported | Q3 2025 | |
| $1.94M | 0.15% | 0.64% | Not reported | Q2 2024 | |
| $955K | 0.07% | 0.23% | -82.9% | Q1 2017 | |
| $508K | 0.04% | 0.03% | Not reported | Q2 2021 | |
| $251K | 0.02% | 0.17% | Not reported | Q3 2021 | |
| $224K | 0.02% | 0.06% | Not reported | Q3 2021 | |
| Q4 2025Reported Feb 17, 202638 positions | |||||
| $391M | 24.29% | 10.28% | Not reported | Q3 2021 | |
| $205M | 12.75% | 1.31% | -2.6% | Q1 2020 | |
| $144M | 8.95% | 12.36% | -11.2% | Q2 2018 | |
| $114M | 7.06% | 22.98% | +14.5% | Q2 2023 | |
| $110M | 6.83% | 7.48% | +14.7% | Q3 2020 | |
| $81.7M | 5.08% | 0.55% | -24.4% | Q1 2023 | |
| $78.7M | 4.89% | 0.39% | +14.3% | Q4 2015 | |
| ABRNAMAvidity Biosciences, Inc. | $72.1M | 4.48% | 0.66% | -43.8% | Q4 2022 |
| $44.4M | 2.75% | 1.57% | Not reported | Q4 2020 | |
| $38.8M | 2.41% | 0.29% | +280.0% | Q4 2021 | |
| $31.4M | 1.95% | 1.54% | Not reported | Q1 2025 | |
| $30.4M | 1.89% | 1.18% | +106.7% | Q4 2018 | |
| $29.8M | 1.85% | 0.06% | +36.4% | Q4 2015 | |
| $26.7M | 1.66% | 8.36% | Not reported | Q4 2023 | |
| $22.8M | 1.42% | 1.10% | New | Q4 2025 | |
| $18.6M | 1.16% | 1.61% | Not reported | Q3 2025 | |
| $17.4M | 1.08% | Not reported | Not reported | Q3 2025 | |
| $16.5M | 1.03% | 0.01% | +100.0% | Q3 2025 | |
| $15.4M | 0.96% | 1.23% | Not reported | Q4 2024 | |
| $12.5M | 0.78% | Not reported | +67.4% | Q1 2025 | |
| $11.6M | 0.72% | 0.35% | Not reported | Q1 2024 | |
| $11.6M | 0.72% | 0.05% | Not reported | Q4 2015 | |
| $11.5M | 0.71% | 0.24% | New | Q4 2025 | |
| $11M | 0.68% | 0.02% | New | Q4 2025 | |
| $11M | 0.68% | 1.75% | Not reported | Q4 2022 | |
| $9.88M | 0.61% | 0.05% | Not reported | Q4 2022 | |
| $8.68M | 0.54% | 0.04% | New | Q4 2025 | |
| $8.25M | 0.51% | 0.53% | Not reported | Q3 2020 | |
| $7.9M | 0.49% | 1.40% | +483.6% | Q1 2017 | |
| $4.67M | 0.29% | 0.06% | Not reported | Q2 2020 | |
| $3.53M | 0.22% | 0.35% | Not reported | Q3 2025 | |
| $3.4M | 0.21% | 0.65% | Not reported | Q3 2021 | |
| $1.7M | 0.11% | 0.64% | Not reported | Q2 2024 | |
| $1.35M | 0.08% | 0.13% | Not reported | Q2 2021 | |
| $1.22M | 0.08% | 1.40% | Not reported | Q2 2021 | |
| $676K | 0.04% | 0.03% | Not reported | Q2 2021 | |
| $303K | 0.02% | 0.06% | Not reported | Q3 2021 | |
| $258K | 0.02% | 0.17% | Not reported | Q3 2021 | |
| Q3 2025Reported Nov 14, 202532 positions | |||||
| $324M | 27.01% | 10.41% | -14.3% | Q3 2021 | |
| $171M | 14.27% | 13.98% | -13.0% | Q2 2018 | |
| $124M | 10.31% | 1.40% | -8.3% | Q1 2020 | |
| $101M | 8.41% | 20.22% | +2.0% | Q2 2023 | |
| ABRNAMAvidity Biosciences, Inc. | $77.6M | 6.47% | 1.21% | +0.3% | Q4 2022 |
| $59.2M | 4.94% | 6.57% | -0.5% | Q3 2020 | |
| $49.9M | 4.16% | 0.34% | -18.6% | Q4 2015 | |
| $43.5M | 3.63% | 0.85% | +26.9% | Q1 2023 | |
| $38.8M | 3.24% | 1.58% | +10.3% | Q4 2020 | |
| $25.1M | 2.09% | 0.04% | -32.5% | Q4 2015 | |
| $23.7M | 1.98% | Not reported | New | Q3 2025 | |
| $22.4M | 1.87% | 8.77% | Not reported | Q4 2023 | |
| $19.7M | 1.64% | 1.58% | Not reported | Q1 2025 | |
| $17.5M | 1.46% | 1.76% | +102.1% | Q4 2022 | |
| $16.1M | 1.34% | 1.62% | New | Q3 2025 | |
| $13M | 1.09% | Not reported | Not reported | Q1 2025 | |
| $12.9M | 1.08% | 0.61% | Not reported | Q4 2018 | |
| $10.4M | 0.87% | 1.24% | Not reported | Q4 2024 | |
| $9.49M | 0.79% | 0.35% | Not reported | Q1 2024 | |
| $8.63M | 0.72% | 0.00% | New | Q3 2025 | |
| $8.48M | 0.71% | 0.05% | Not reported | Q4 2022 | |
| $6.25M | 0.52% | 0.08% | Not reported | Q4 2021 | |
| $4.92M | 0.41% | 0.03% | Not reported | Q1 2016 | |
| $3.27M | 0.27% | 0.36% | New | Q3 2025 | |
| $2.96M | 0.25% | 0.65% | Not reported | Q3 2021 | |
| $1.74M | 0.15% | 0.53% | Not reported | Q2 2024 | |
| $926K | 0.08% | 0.24% | Not reported | Q1 2017 | |
| $807K | 0.07% | 0.03% | Not reported | Q2 2021 | |
| $637K | 0.05% | 0.14% | Not reported | Q2 2021 | |
| $612K | 0.05% | 1.42% | Not reported | Q2 2021 | |
| $586K | 0.05% | 0.22% | Not reported | Q3 2021 | |
| $532K | 0.04% | 0.06% | Not reported | Q3 2021 | |
Premium opens every quarter this fund has filed