DEERFIELD MANAGEMENT COMPANY, L.P.
13F filer · CIK 1009258 · New York, NY
Summary
DEERFIELD MANAGEMENT COMPANY, L.P. reported $9.59B across 82 positions in its 13F for 2026 Q2, filed Aug 14, 2026. The largest holdings are NUVL (22.2%), BKD 3.5 10.15.29 (6.1%), RVMD (4.7%). Versus 2026 Q1, leaving options aside, it opened 13 new positions, added to 14, trimmed 12 and sold out of 13.
Reported value$9.59B
Positions82
Report period2026 Q2
FiledAug 14, 2026
New positions13
Added14
Trimmed12
Sold out13
Top 25 holdings
By reported value, options listed separately · change vs 2026 Q1
Weight 22.2%Value $2.13BPrice $123.96Shares 17.25MSince Jun 30 +0.37%
Weight 6.1%Value $585.70MPrincipal $306.88M
Weight 4.7%Value $447.97MPrice $201.74Shares 2.39M +4.14%Since Jun 30 +7.72%
Weight 3.4%Value $322.52MPrice $285.65Shares 963KSince Jun 30 -14.68%
Weight 3.3%Value $320.87MPrice $18.27Shares 20.21MSince Jun 30 +15.05%
Weight 3.3%Value $314.60MPrice $62.53Shares 4.90M -17.17%Since Jun 30 -2.59%
REVOLUTION MEDICINES INCNo ticker matchNew
Weight 2.6%Value $251.68MPrincipal $200.00M
Weight 2.6%Value $247.62MPrice $485.54Shares 457KSince Jun 30 -10.39%
Weight 2.5%Value $240.54MPrincipal $200.00M
Weight 2.5%Value $235.01MPrice $18.62Shares 8.14M +5.85%Since Jun 30 -35.53%
Weight 2.0%Value $193.74MPrice $31.86Shares 5.01M -44.65%Since Jun 30 -17.67%
Weight 2.0%Value $188.58MPrice $35.36Shares 6.87M +178.84%Since Jun 30 +28.72%
Weight 2.0%Value $187.24MPrice $10.98Shares 11.64MSince Jun 30 -31.76%
Weight 1.8%Value $168.05MPrice $32.50Shares 3.92M +5.22%Since Jun 30 -24.26%
Weight 1.6%Value $156.97MPrice $45.57Shares 1.98MSince Jun 30 -42.53%
Weight 1.6%Value $151.81MPrice $77.38Shares 1.45M -15.34%Since Jun 30 -26.04%
Weight 1.6%Value $150.96MPrice $8.27Shares 15.10M +0.39%Since Jun 30 -17.30%
Weight 1.5%Value $144.53MPrice $23.58Shares 4.26MSince Jun 30 -30.42%
Weight 1.4%Value $133.48MPrice $28.04Shares 4.52MSince Jun 30 -5.05%
Weight 1.4%Value $131.00MPrice $24.30Shares 4.19M +1.06%Since Jun 30 -22.26%
Weight 1.2%Value $119.60MPrice $5.67Shares 11.48MSince Jun 30 -45.59%
Weight 1.2%Value $116.74MPrice $31.91Shares 3.38M +8.00%Since Jun 30 -7.72%
CELCUITY INCNo ticker matchNew
Weight 1.2%Value $113.78MPrincipal $100.00M
Weight 1.2%Value $113.22MPrice $66.25Shares 1.39M -11.71%Since Jun 30 -18.72%
Weight 1.1%Value $109.70MPrice $87.83Shares 1.13M +10.35%Since Jun 30 -9.90%
| Stock | Weight | Value | Since Jun 30 | Shares change | Action |
|---|---|---|---|---|---|
| 22.2% | $2.13B | +0.37% | — | Hold | |
| 6.1% | $585.70M | — | — | Hold | |
| 4.7% | $447.97M | +7.72% | +4.14% | Add | |
| 3.4% | $322.52M | -14.68% | — | Hold | |
| 3.3% | $320.87M | +15.05% | — | Hold | |
| 3.3% | $314.60M | -2.59% | -17.17% | Trim | |
| REVOLUTION MEDICINES INCNo ticker match | 2.6% | $251.68M | — | — | New |
| 2.6% | $247.62M | -10.39% | — | Hold | |
| 2.5% | $240.54M | — | — | Hold | |
| 2.5% | $235.01M | -35.53% | +5.85% | Add | |
| 2.0% | $193.74M | -17.67% | -44.65% | Trim | |
| 2.0% | $188.58M | +28.72% | +178.84% | Add | |
| 2.0% | $187.24M | -31.76% | — | Hold | |
| 1.8% | $168.05M | -24.26% | +5.22% | Add | |
| 1.6% | $156.97M | -42.53% | — | Hold | |
| 1.6% | $151.81M | -26.04% | -15.34% | Trim | |
| 1.6% | $150.96M | -17.30% | +0.39% | Add | |
| 1.5% | $144.53M | -30.42% | — | Hold | |
| 1.4% | $133.48M | -5.05% | — | Hold | |
| 1.4% | $131.00M | -22.26% | +1.06% | Add | |
| 1.2% | $119.60M | -45.59% | — | Hold | |
| 1.2% | $116.74M | -7.72% | +8.00% | Add | |
| CELCUITY INCNo ticker match | 1.2% | $113.78M | — | — | New |
| 1.2% | $113.22M | -18.72% | -11.71% | Trim | |
| 1.1% | $109.70M | -9.90% | +10.35% | Add |
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
REVOLUTION MEDICINES INCNo ticker match≈ $251.68MNew
CELCUITY INCNo ticker match≈ $113.78MNew
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.