Rock Springs Capital Management LP Portfolio Holdings
Q3 2025•91 long positions•$1.7B portfolio value
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Holding100 | Sector | Position↕ | Traded↕ | Ownership↕ | Shares Δ↕ | Shares Δ % | Market Cap↕ | Owned Since↕ |
|---|---|---|---|---|---|---|---|---|
Unknown Unknown | $105.3M 6.18% | -$24.3M Sold | — 142.8K shares | 175.8K → 142.8K −$24.3M | -18.78% | — — | Q1 2025 Held for 8 months | |
Drug Manufacturers - General Healthcare | $80.4M 4.72% | -$8.5M Sold | 0.012% 105.4K shares | 116.5K → 105.4K −$8.5M | -9.53% | $684.00B Mega Cap | Q4 2023 Held for 1y 11m | |
Biotechnology Healthcare | $72.4M 4.25% | -$14.5M Sold | 1.08% 717.1K shares | 861.2K → 717.1K −$14.5M | -16.73% | $6.7B Mid Cap | Q4 2017 Held for 7y 11m | |
Biotechnology Healthcare | $63.2M 3.71% | -$1.2M Sold | 0.618% 137.7K shares | 140.3K → 137.7K −$1.2M | -1.82% | $10.2B Large Cap | Q3 2016 Held for 9y 2m | |
Biotechnology Healthcare | $62.4M 3.66% | +$201.3K Bought | 0.714% 1.3M shares | 1.3M → 1.3M +$201.3K | +0.32% | $8.7B Mid Cap | Q1 2023 Held for 2y 8m | |
Biotechnology Healthcare | $56.2M 3.3% | -$43.9M Sold | 0.788% 597.1K shares | 1.1M → 597.1K −$43.9M | -43.87% | $7.1B Mid Cap | Q2 2023 Held for 2y 5m | |
Biotechnology Healthcare | $55.8M 3.27% | -$4.2M Sold | 1.52% 761.1K shares | 818.2K → 761.1K −$4.2M | -6.98% | $3.7B Mid Cap | Q3 2019 Held for 6y 2m | |
Biotechnology Healthcare | $55.4M 3.25% | -$20.2M Sold | 0.182% 385.0K shares | 525.0K → 385.0K −$20.2M | -26.67% | $30.4B Large Cap | Q2 2024 Held for 1y 5m | |
Biotechnology Healthcare | $51.7M 3.04% | +$6.1M Bought | 2.43% 2.2M shares | 1.9M → 2.2M +$6.1M | +13.45% | $2.1B Mid Cap | Q1 2015 Held for 10y 8m | |
Unknown Unknown | $42.6M 2.5% | -$497.0K Sold | — 214.5K shares | 217.0K → 214.5K −$497.0K | -1.15% | — — | Q4 2022 Held for 2y 11m | |
Medical - Devices Healthcare | $40.4M 2.37% | -$1.3M Sold | 0.731% 235.0K shares | 242.5K → 235.0K −$1.3M | -3.09% | $5.5B Mid Cap | Q3 2017 Held for 8y 2m | |
Biotechnology Healthcare | $38.5M 2.26% | -$1.3M Sold | 1.65% 958.5K shares | 989.7K → 958.5K −$1.3M | -3.15% | $2.3B Mid Cap | Q1 2019 Held for 6y 8m | |
Biotechnology Healthcare | $37.5M 2.2% | -$4.4M Sold | 1.29% 1.2M shares | 1.4M → 1.2M −$4.4M | -10.4% | $2.9B Mid Cap | Q1 2014 Held for 11y 8m | |
Medical - Instruments & Supplies Healthcare | $36.7M 2.15% | — | 0.023% 82.0K shares | — | — | $160.32B Large Cap | Q4 2013 Held for 11y 11m | |
Medical - Devices Healthcare | $35.2M 2.06% | +$512.6K Bought | 0.024% 360.3K shares | 355.0K → 360.3K +$512.6K | +1.48% | $144.66B Large Cap | Q2 2023 Held for 2y 5m | |
Biotechnology Healthcare | $34.2M 2.01% | -$3.2M Sold | 1.1% 851.7K shares | 931.7K → 851.7K −$3.2M | -8.58% | $3.1B Mid Cap | Q1 2020 Held for 5y 8m | |
Biotechnology Healthcare | $33.9M 1.99% | -$11.7M Sold | 0.057% 74.3K shares | 100.0K → 74.3K −$11.7M | -25.75% | $59.8B Large Cap | Q2 2017 Held for 8y 5m | |
Medical - Diagnostics & Research Healthcare | $32.5M 1.91% | +$1.2M Bought | 0.313% 593.5K shares | 572.0K → 593.5K +$1.2M | +3.76% | $10.4B Large Cap | Q3 2016 Held for 9y 2m | |
Medical - Devices Healthcare | $30.5M 1.79% | -$2.0M Sold | 0.309% 120.5K shares | 128.5K → 120.5K −$2.0M | -6.23% | $9.9B Mid Cap | Q3 2015 Held for 10y 2m | |
Biotechnology Healthcare | $29.7M 1.75% | -$664.7K Sold | 0.783% 626.5K shares | 640.5K → 626.5K −$664.7K | -2.19% | $3.8B Mid Cap | Q2 2019 Held for 6y 5m | |
Biotechnology Healthcare | $29.6M 1.74% | — | 0.826% 794.1K shares | — | — | $3.6B Mid Cap | Q4 2024 Held for 11 months | |
Unknown Unknown | $26.8M 1.57% | -$2.7M Sold | — 791.2K shares | 871.4K → 791.2K −$2.7M | -9.2% | — — | Q4 2022 Held for 2y 11m | |
Unknown Unknown | $26.6M 1.56% | -$5.2M Sold | — 951.2K shares | 1.1M → 951.2K −$5.2M | -16.26% | — — | Q4 2023 Held for 1y 11m | |
Biotechnology Healthcare | $25.5M 1.5% | — | 0.63% 450.4K shares | — | — | $4.0B Mid Cap | Q3 2020 Held for 5y 2m | |
Medical - Care Facilities Healthcare | $25.4M 1.49% | -$1.0M Sold | 0.141% 125.0K shares | 130.0K → 125.0K −$1.0M | -3.85% | $17.9B Large Cap | Q4 2024 Held for 11 months | |
Medical - Healthcare Information Services Healthcare | $25.0M 1.46% | +$1.1M Bought | 2.54% 3.0M shares | 2.8M → 3.0M +$1.1M | +4.58% | $981.1M Small Cap | Q1 2021 Held for 4y 8m | |
Unknown Unknown | $24.0M 1.41% | — | — 793.7K shares | — | — | — — | Q2 2025 Held for 5 months | |
Biotechnology Healthcare | $23.9M 1.4% | +$11.0M Bought | 0.984% 249.4K shares | 134.1K → 249.4K +$11.0M | +85.94% | $2.4B Mid Cap | Q2 2025 Held for 5 months | |
Medical - Devices Healthcare | $21.3M 1.25% | +$2.0M Bought | 0.081% 316.9K shares | 286.8K → 316.9K +$2.0M | +10.51% | $26.4B Large Cap | Q1 2021 Held for 4y 8m | |
Unknown Unknown | $20.3M 1.19% | -$22.1 Sold | 1.6% 920.0K shares | 920.0K → 920.0K −$22.1 | -0.0% | $1.3B Small Cap | Q2 2025 Held for 5 months | |
Biotechnology Healthcare | $18.7M 1.1% | -$2.4M Sold | 1.09% 721.5K shares | 812.7K → 721.5K −$2.4M | -11.21% | $1.7B Small Cap | Q1 2022 Held for 3y 8m | |
Biotechnology Healthcare | $17.9M 1.05% | — | 0.967% 617.4K shares | — | — | $1.9B Small Cap | Q1 2024 Held for 1y 8m | |
Medical - Healthcare Information Services Healthcare | $17.6M 1.03% | -$2.1M Sold | 1.25% 749.1K shares | 837.3K → 749.1K −$2.1M | -10.53% | $1.4B Small Cap | Q3 2019 Held for 6y 2m | |
Biotechnology Healthcare | $17.1M 1.01% | -$5.1M Sold | 0.683% 288.3K shares | 373.8K → 288.3K −$5.1M | -22.85% | $2.5B Mid Cap | Q4 2024 Held for 11 months | |
Biotechnology Healthcare | $16.9M 0.995% | +$1.7M Bought | 0.529% 595.9K shares | 536.1K → 595.9K +$1.7M | +11.16% | $3.2B Mid Cap | Q3 2024 Held for 1y 2m | |
Biotechnology Healthcare | $15.7M 0.919% | -$1.7M Sold | 2.61% 4.5M shares | 5.0M → 4.5M −$1.7M | -9.84% | $600.5M Small Cap | Q4 2021 Held for 3y 11m | |
Biotechnology Healthcare | $15.6M 0.913% | — | 0.97% 623.4K shares | — | — | $1.6B Small Cap | Q1 2024 Held for 1y 8m | |
Medical - Instruments & Supplies Healthcare | $15.5M 0.911% | +$287.2K Bought | 1.18% 540.4K shares | 530.4K → 540.4K +$287.2K | +1.89% | $1.3B Small Cap | Q2 2022 Held for 3y 5m | |
Biotechnology Healthcare | $15.5M 0.909% | +$3.2M Bought | 0.526% 408.3K shares | 324.5K → 408.3K +$3.2M | +25.82% | $2.9B Mid Cap | Q1 2025 Held for 8 months | |
Biotechnology Healthcare | $15.3M 0.901% | -$102.1K Sold | 0.632% 1.9M shares | 2.0M → 1.9M −$102.1K | -0.66% | $2.4B Mid Cap | Q2 2015 Held for 10y 5m | |
ETF ETF | $15.2M 0.892% | — | — 151.8K shares | — | — | — — | Q2 2025 Held for 5 months | |
Biotechnology Healthcare | $14.7M 0.862% | -$602.0K Sold | 0.323% 179.0K shares | 186.3K → 179.0K −$602.0K | -3.94% | $4.6B Mid Cap | Q2 2025 Held for 5 months | |
Biotechnology Healthcare | $14.7M 0.861% | — | 0.096% 710.0K shares | — | — | $15.3B Large Cap | Q3 2024 Held for 1y 2m | |
Biotechnology Healthcare | $14.5M 0.85% | +$3.0M Bought | 0.722% 1.0M shares | 800.2K → 1.0M +$3.0M | +26.01% | $2.0B Mid Cap | Q2 2025 Held for 5 months | |
Biotechnology Healthcare | $14.0M 0.824% | -$313.2K Sold | 1.16% 686.1K shares | 701.4K → 686.1K −$313.2K | -2.18% | $1.2B Small Cap | Q1 2024 Held for 1y 8m | |
Unknown Unknown | $12.9M 0.757% | -$1.3M Sold | — 580.7K shares | 640.5K → 580.7K −$1.3M | -9.34% | — — | Q3 2024 Held for 1y 2m | |
Drug Manufacturers - Specialty & Generic Healthcare | $12.6M 0.739% | +$133.4K Bought | 0.09% 89.8K shares | 88.8K → 89.8K +$133.4K | +1.07% | $13.9B Large Cap | Q1 2014 Held for 11y 8m | |
Biotechnology Healthcare | $12.6M 0.739% | — | 0.949% 2.3M shares | — | — | $1.3B Small Cap | Q4 2024 Held for 11 months | |
Medical - Diagnostics & Research Healthcare | $12.2M 0.716% | +$495.7K Bought | 0.009% 61.5K shares | 59.0K → 61.5K +$495.7K | +4.24% | $141.96B Large Cap | Q1 2025 Held for 8 months | |
Biotechnology Healthcare | $11.0M 0.646% | +$7.1M Bought | 0.828% 236.2K shares | 84.0K → 236.2K +$7.1M | +181.28% | $1.3B Small Cap | Q4 2024 Held for 11 months |
