Rock Springs Capital Management LP
13F filer · CIK 1595725 · Baltimore, MD
Summary
Rock Springs Capital Management LP reported $2.05B across 104 positions in its 13F for 2026 Q2, filed Aug 14, 2026. The largest holdings are RVMD (10.1%), TVTX (6.0%), LLY (5.8%). Versus 2026 Q1, leaving options aside, it opened 17 new positions, added to 40, trimmed 30 and sold out of 13.
Reported value$2.05B
Positions104
Report period2026 Q2
FiledAug 14, 2026
New positions17
Added40
Trimmed30
Sold out13
Top 25 holdings
By reported value, options listed separately · change vs 2026 Q1
Weight 10.1%Value $206.98MPrice $204.48Shares 1.11M -8.62%Since Jun 30 +9.18%
Weight 6.0%Value $123.79MPrice $59.99Shares 2.18M +47.44%Since Jun 30 +5.60%
Weight 5.8%Value $118.38MPrice $1185Shares 99KSince Jun 30 -1.23%
Weight 4.6%Value $93.97MPrice $509.44Shares 175K +2.34%Since Jun 30 -5.12%
Weight 4.6%Value $93.44MPrice $87.54Shares 798K -1.62%Since Jun 30 -25.22%
Weight 3.8%Value $76.90MPrice $95.71Shares 693K +0.41%Since Jun 30 -13.80%
Weight 2.5%Value $51.96MPrice $110.51Shares 453K -8.80%Since Jun 30 -3.63%
Weight 2.4%Value $48.94MPrice $970.66Shares 53K -46.45%Since Jun 30 +4.62%
Weight 2.2%Value $45.01MPrice $228.07Shares 169KSince Jun 30 -14.49%
Weight 2.0%Value $41.28MPrice $37.25Shares 684K -10.37%Since Jun 30 -38.29%
Weight 1.9%Value $39.35MPrice $47.75Shares 715K -3.29%Since Jun 30 -13.18%
Weight 1.9%Value $38.61MPrice $115.63Shares 362K +15.22%Since Jun 30 +8.45%
Weight 1.8%Value $36.55MPrice $318.86Shares 116K -3.94%Since Jun 30 +0.98%
Weight 1.7%Value $34.37MPrice $32.69Shares 640K +0.02%Since Jun 30 -39.09%
Weight 1.6%Value $32.32MPrice $15.32Shares 968K -20.59%Since Jun 30 -54.12%
Weight 1.6%Value $32.07MPrice $114.22Shares 270K +3.02%Since Jun 30 -3.98%
Weight 1.5%Value $30.41MPrice $412.18Shares 76K -6.76%Since Jun 30 +3.65%
Weight 1.4%Value $28.15MPrice $78.15Shares 263K +1.00%Since Jun 30 -27.09%
Weight 1.3%Value $26.50MPrice $374.94Shares 64K +20.28%Since Jun 30 -9.79%
Weight 1.3%Value $26.02MPrice $31.64Shares 699K +7.52%Since Jun 30 -14.97%
Weight 1.3%Value $25.69MPrice $14.21Shares 1.40M +27.07%Since Jun 30 -22.43%
Weight 1.2%Value $24.40MPrice $138.35Shares 145K -3.79%Since Jun 30 -17.91%
Weight 1.2%Value $23.58MPrice $46.51Shares 465K -43.78%Since Jun 30 -8.35%
Weight 1.1%Value $23.39MPrice $257.60Shares 125KSince Jun 30 +37.70%
Weight 1.1%Value $23.10MPrice $86.64Shares 343K -3.54%Since Jun 30 +28.64%
| Stock | Weight | Value | Since Jun 30 | Shares change | Action |
|---|---|---|---|---|---|
| 10.1% | $206.98M | +9.18% | -8.62% | Trim | |
| 6.0% | $123.79M | +5.60% | +47.44% | Add | |
| 5.8% | $118.38M | -1.23% | — | Hold | |
| 4.6% | $93.97M | -5.12% | +2.34% | Add | |
| 4.6% | $93.44M | -25.22% | -1.62% | Trim | |
| 3.8% | $76.90M | -13.80% | +0.41% | Add | |
| 2.5% | $51.96M | -3.63% | -8.80% | Trim | |
| 2.4% | $48.94M | +4.62% | -46.45% | Trim | |
| 2.2% | $45.01M | -14.49% | — | New | |
| 2.0% | $41.28M | -38.29% | -10.37% | Trim | |
| 1.9% | $39.35M | -13.18% | -3.29% | Trim | |
| 1.9% | $38.61M | +8.45% | +15.22% | Add | |
| 1.8% | $36.55M | +0.98% | -3.94% | Trim | |
| 1.7% | $34.37M | -39.09% | +0.02% | Add | |
| 1.6% | $32.32M | -54.12% | -20.59% | Trim | |
| 1.6% | $32.07M | -3.98% | +3.02% | Add | |
| 1.5% | $30.41M | +3.65% | -6.76% | Trim | |
| 1.4% | $28.15M | -27.09% | +1.00% | Add | |
| 1.3% | $26.50M | -9.79% | +20.28% | Add | |
| 1.3% | $26.02M | -14.97% | +7.52% | Add | |
| 1.3% | $25.69M | -22.43% | +27.07% | Add | |
| 1.2% | $24.40M | -17.91% | -3.79% | Trim | |
| 1.2% | $23.58M | -8.35% | -43.78% | Trim | |
| 1.1% | $23.39M | +37.70% | — | Hold | |
| 1.1% | $23.10M | +28.64% | -3.54% | Trim |
Weight is the share of the reported 13F value, including options at notional value. “Since Jun 30” compares the latest close with the quarter-end price implied by the filing (value ÷ shares).
Largest buys in 2026 Q2
Largest sells in 2026 Q2
Source: SEC Form 13F, values as reported by the filer. Filings lag up to 45 days after quarter end and cover only certain long positions. Research only, not investment advice.