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DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)
Period ended Jun 30, 2026 · Latest filing Aug 14, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Sep 30, 2024: $6,692,805,831
- Dec 31, 2024: $5,280,006,191
- Mar 31, 2025: $5,064,779,427
- Jun 30, 2025: $5,509,809,264
- Sep 30, 2025: $6,550,740,151
- Dec 31, 2025: $7,830,165,970
- Mar 31, 2026: $8,476,379,716
- Jun 30, 2026: $9,586,027,944
Top holdings
Top 10 at Jun 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- NUVALENT INC · COM · 670703107 · shares: $2,130,183,575
- BROOKDALE SR LIVING INC · NOTE 3.500%10/1 · 112463AF1 · principal: $585,704,753
- REVOLUTION MEDICINES INC · COM · 76155X100 · shares: $447,973,760
- PRAXIS PRECISION MEDICINES I · COM NEW · 74006W207 · shares: $322,520,281
- VIATRIS INC · COM · 92556V106 · shares: $320,873,980
- CENTENE CORP DEL · COM · 15135B101 · shares: $314,595,190
- REVOLUTION MEDICINES INC · NOTE 0.500% 5/0 · 76155XAA8 · principal: $251,681,000
- UNITED THERAPEUTICS CORP DEL · COM · 91307C102 · shares: $247,616,310
- ARROWHEAD PHARMACEUTICALS IN · NOTE 1/1 · 04280AAC4 · principal: $240,537,600
- LEGEND BIOTECH CORP · SPONSORED ADS · 52490G102 · shares: $235,014,985
Reported holdings
82 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| NUVALENT INC | COM | 670703107 | — | 17,248,450 shares | $2,130,183,575 |
| BROOKDALE SR LIVING INC | NOTE 3.500%10/1 | 112463AF1 | — | 306,885,000 principal | $585,704,753 |
| REVOLUTION MEDICINES INC | COM | 76155X100 | — | 2,392,000 shares | $447,973,760 |
| PRAXIS PRECISION MEDICINES I | COM NEW | 74006W207 | — | 963,351 shares | $322,520,281 |
| VIATRIS INC | COM | 92556V106 | — | 20,206,170 shares | $320,873,980 |
| CENTENE CORP DEL | COM | 15135B101 | — | 4,901,000 shares | $314,595,190 |
| REVOLUTION MEDICINES INC | NOTE 0.500% 5/0 | 76155XAA8 | — | 200,000,000 principal | $251,681,000 |
| UNITED THERAPEUTICS CORP DEL | COM | 91307C102 | — | 457,000 shares | $247,616,310 |
| ARROWHEAD PHARMACEUTICALS IN | NOTE 1/1 | 04280AAC4 | — | 200,000,000 principal | $240,537,600 |
| LEGEND BIOTECH CORP | SPONSORED ADS | 52490G102 | — | 8,137,638 shares | $235,014,985 |
| COGENT BIOSCIENCES INC | COM | 19240Q201 | — | 5,006,104 shares | $193,736,225 |
| GENMAB A/S | SPONSORED ADS | 372303206 | — | 6,865,000 shares | $188,581,550 |
| BROOKDALE SR LIVING INC | COM | 112463104 | — | 11,637,032 shares | $187,239,845 |
| VERA THERAPEUTICS INC | CL A | 92337R101 | — | 3,916,400 shares | $168,052,724 |
| IONIS PHARMACEUTICALS INC | COM | 462222100 | — | 1,979,669 shares | $156,967,955 |
| CELCUITY INC | COM | 15102K100 | — | 1,451,014 shares | $151,805,085 |
| BIOCRYST PHARMACEUTICALS INC | COM | 09058V103 | — | 15,096,403 shares | $150,964,030 |
| NEWAMSTERDAM PHARMA COMPANY | ORDINARY SHARES | N62509109 | — | 4,264,789 shares | $144,533,699 |
| ACADIA HEALTHCARE COMPANY IN | COM | 00404A109 | — | 4,520,000 shares | $133,475,600 |
| TANGO THERAPEUTICS INC | COM | 87583X109 | — | 4,190,611 shares | $130,998,500 |
| ADAPTHEALTH CORP | COMMON STOCK | 00653Q102 | — | 11,477,730 shares | $119,597,947 |
| PHARVARIS N V | COM | N69605108 | — | 3,376,042 shares | $116,743,532 |
| CELCUITY INC | NOTE 0.250% 8/0 | 15102KAB6 | — | 100,000,000 principal | $113,779,900 |
| ARROWHEAD PHARMACEUTICALS IN | COM | 04280A100 | — | 1,389,055 shares | $113,221,873 |
| DIANTHUS THERAPEUTICS INC | COM | 252828108 | — | 1,125,313 shares | $109,695,511 |
| LARIMAR THERAPEUTICS INC | COM | 517125100 | — | 35,606,974 shares | $108,601,271 |
| MINERALYS THERAPEUTICS INC | COM | 603170101 | — | 3,958,000 shares | $106,786,840 |
| ALIGNMENT HEALTHCARE INC | NOTE 4.250%11/1 | 01625VAB0 | — | 61,000,000 principal | $103,829,930 |
| IDEAYA BIOSCIENCES INC | COM | 45166A102 | — | 2,714,503 shares | $101,169,527 |
| XENON PHARMACEUTICALS INC | COM | 98420N105 | — | 1,615,696 shares | $97,523,411 |
| IONIS PHARMACEUTICALS INC | NOTE 1.750% 6/1 | 462222AF7 | — | 60,000,000 principal | $93,104,400 |
| SAVARA INC | COM | 805111101 | — | 13,569,000 shares | $83,585,040 |
| LANTHEUS HLDGS INC | COM | 516544103 | — | 752,999 shares | $83,537,709 |
| SYNDAX PHARMACEUTICALS INC | COM | 87164F105 | — | 3,779,900 shares | $82,628,614 |
| ZENAS BIOPHARMA INC | NOTE 2.500% 4/0 | 98937LAA3 | — | 67,200,000 principal | $80,316,096 |
| BIOMARIN PHARMACEUTICAL INC | COM | 09061G101 | — | 1,332,836 shares | $76,264,876 |
| PFIZER INC | COM | 717081103 | — | 3,040,000 shares | $73,203,200 |
| INDIVIOR PHARMACEUTICALS INC | COM | 45579U109 | — | 1,648,895 shares | $67,654,162 |
| BIO RAD LABS INC | CL A | 090572207 | — | 226,070 shares | $66,376,413 |
| ARS PHARMACEUTICALS INC | COM | 82835W108 | — | 7,503,812 shares | $60,105,534 |
| STOKE THERAPEUTICS INC | COM | 86150R107 | — | 1,823,500 shares | $59,664,920 |
| STRUCTURE THERAPEUTICS INC | SPONSORED ADS | 86366E106 | — | 1,086,000 shares | $58,285,620 |
| ENVISTA HOLDINGS CORPORATION | COM | 29415F104 | — | 2,210,100 shares | $58,236,135 |
| INSPIRE MED SYS INC | COM | 457730109 | — | 1,296,862 shares | $57,853,014 |
| CAREDX INC | COM | 14167L103 | — | 1,997,618 shares | $56,932,113 |
| BOSTON SCIENTIFIC CORP | COM | 101137107 | — | 1,315,000 shares | $56,124,200 |
| BELITE BIO INC | SPONSORED ADS | 07782B104 | — | 357,199 shares | $55,003,288 |
| PARABILIS MEDICINES INC | COM | 698955101 | — | 1,880,704 shares | $51,474,868 |
| CERTARA INC | COM | 15687V109 | — | 7,512,928 shares | $49,209,678 |
| DISC MEDICINE INC | COM | 254604101 | — | 657,000 shares | $48,052,980 |
| LIVANOVA PLC | NOTE 2.500% 3/1 | 53802LAB8 | — | 34,280,000 principal | $46,485,120 |
| BRIDGEBIO ONCOLOGY THERAPEUT | COM NEW | 107924102 | — | 4,885,446 shares | $37,227,099 |
| TYRA BIOSCIENCES INC | COM | 90240B106 | — | 1,017,000 shares | $32,482,980 |
| MONOPAR THERAPEUTICS INC | COM NEW | 61023L207 | — | 323,745 shares | $29,975,550 |
| SIONNA THERAPEUTICS INC | COM | 829401108 | — | 680,916 shares | $29,953,495 |
| IMMUNOCORE HLDGS PLC | NOTE 2.500% 2/0 | 45258DAB1 | — | 30,000,000 principal | $27,104,340 |
| AVALYN PHARMACEUTICALS INC | COM SHS | 05348Y105 | — | 731,000 shares | $24,064,520 |
| FOGHORN THERAPEUTICS INC | COM | 344174107 | — | 4,394,367 shares | $21,444,511 |
| BETA BIONICS INC | COM | 08659B102 | — | 1,324,000 shares | $20,747,080 |
| ALNYLAM PHARMACEUTICALS INC | COM | 02043Q107 | — | 67,935 shares | $20,450,473 |
| BRIGHT MINDS BIOSCIENCES INC | COM NEW | 10919W405 | — | 283,000 shares | $19,866,600 |
| ODYSSEY THERAPEUTICS INC | COMMON STOCK | 67613T104 | — | 1,046,139 shares | $19,573,261 |
| THE ONCOLOGY INSTITUTE INC | COM | 68236X100 | — | 3,360,052 shares | $18,245,082 |
| KYVERNA THERAPEUTICS INC | COM | 501976104 | — | 2,000,000 shares | $17,820,000 |
| ALAMAR BIOSCIENCES INC | COMMON STOCK | 010911105 | — | 600,000 shares | $16,254,000 |
| CHEMED CORP NEW | COM | 16359R103 | — | 30,000 shares | $13,972,200 |
| SPYGLASS PHARMA INC | COM SHS | 85220G109 | — | 550,000 shares | $12,243,000 |
| NEOGENOMICS INC | NOTE 0.250% 1/1 | 64049MAB6 | — | 13,040,000 principal | $12,202,076 |
| ADAGENE INC | ADS | 005329107 | — | 2,666,666 shares | $11,199,997 |
| HEMAB THERAPEUTICS HLDGS INC | COM SHS | 423494103 | — | 275,000 shares | $10,100,750 |
| MOBIA MED INC | COMMON STOCK | 60705V103 | — | 670,752 shares | $8,988,077 |
| EMBECTA CORP | COMMON STOCK | 29082K105 | — | 2,534,961 shares | $8,263,973 |
| VERACYTE INC | COM | 92337F107 | — | 101,000 shares | $5,931,730 |
| ANNEXON INC | COM | 03589W102 | — | 583,913 shares | $3,334,143 |
| ALECTOR INC | COM | 014442107 | — | 1,055,192 shares | $2,120,936 |
| NEWAMSTERDAM PHARMA COMPANY | *W EXP 99/99/999 | N62509117 | — | 92,787 shares | $1,982,858 |
| EDWARDS LIFESCIENCES CORP | COM | 28176E108 | — | 13,702 shares | $1,239,483 |
| MIRUM PHARMACEUTICALS INC | COM | 604749101 | — | 6,027 shares | $705,581 |
| HUMANA INC | COM | 444859102 | — | 917 shares | $364,251 |
| THE ONCOLOGY INSTITUTE INC | *W EXP 99/99/999 | 68236X118 | — | 1,250,000 shares | $51,000 |
| PMV PHARMACEUTICALS INC | COM | 69353Y103 | — | 8,790 shares | $11,779 |
| SURROZEN INC | *W EXP 08/01/203 | 86889P117 | — | 166,666 shares | $2,750 |