SEC Form 13F

DEERFIELD MANAGEMENT COMPANY, L.P. 13F Holdings

Inspect DEERFIELD MANAGEMENT COMPANY, L.P.'s 2026-06-30 SEC 13F positions, public filing date, amendments and original receipt.

As of 2026-08-15T03:59:59.999Z

Report period
2026-06-30
Publicly available
2026-08-15
Reported value
$9,586,027,944
Positions
82

Disclosed positions

NUVALENT INCNUVLCOM$2,130,183,57517,248,450SHNone
BROOKDALE SR LIVING INCUnresolvedNOTE 3.500%10/1$585,704,753306,885,000PRNNone
REVOLUTION MEDICINES INCRVMDCOM$447,973,7602,392,000SHNone
PRAXIS PRECISION MEDICINES IPRAXCOM NEW$322,520,281963,351SHNone
VIATRIS INCVTRSCOM$320,873,98020,206,170SHNone
CENTENE CORP DELCNCCOM$314,595,1904,901,000SHNone
REVOLUTION MEDICINES INCUnresolvedNOTE 0.500% 5/0$251,681,000200,000,000PRNNone
UNITED THERAPEUTICS CORP DELUTHRCOM$247,616,310457,000SHNone
ARROWHEAD PHARMACEUTICALS INARWRNOTE 1/1$240,537,600200,000,000PRNNone
LEGEND BIOTECH CORPLEGNSPONSORED ADS$235,014,9858,137,638SHNone
COGENT BIOSCIENCES INCCOGTCOM$193,736,2255,006,104SHNone
GENMAB A/SGMABSPONSORED ADS$188,581,5506,865,000SHNone
BROOKDALE SR LIVING INCBKDCOM$187,239,84511,637,032SHNone
VERA THERAPEUTICS INCVERACL A$168,052,7243,916,400SHNone
IONIS PHARMACEUTICALS INCIONSCOM$156,967,9551,979,669SHNone
CELCUITY INCCELCCOM$151,805,0851,451,014SHNone
BIOCRYST PHARMACEUTICALS INCBCRXCOM$150,964,03015,096,403SHNone
NEWAMSTERDAM PHARMA COMPANYNAMSORDINARY SHARES$144,533,6994,264,789SHNone
ACADIA HEALTHCARE COMPANY INACHCCOM$133,475,6004,520,000SHNone
TANGO THERAPEUTICS INCTNGXCOM$130,998,5004,190,611SHNone
ADAPTHEALTH CORPAHCOCOMMON STOCK$119,597,94711,477,730SHNone
PHARVARIS N VPHVSCOM$116,743,5323,376,042SHNone
CELCUITY INCUnresolvedNOTE 0.250% 8/0$113,779,900100,000,000PRNNone
ARROWHEAD PHARMACEUTICALS INARWRCOM$113,221,8731,389,055SHNone
DIANTHUS THERAPEUTICS INCDNTHCOM$109,695,5111,125,313SHNone
LARIMAR THERAPEUTICS INCLRMRCOM$108,601,27135,606,974SHNone
MINERALYS THERAPEUTICS INCMLYSCOM$106,786,8403,958,000SHNone
ALIGNMENT HEALTHCARE INCALHCNOTE 4.250%11/1$103,829,93061,000,000PRNNone
IDEAYA BIOSCIENCES INCIDYACOM$101,169,5272,714,503SHNone
XENON PHARMACEUTICALS INCXENECOM$97,523,4111,615,696SHNone
IONIS PHARMACEUTICALS INCIONSNOTE 1.750% 6/1$93,104,40060,000,000PRNNone
SAVARA INCSVRACOM$83,585,04013,569,000SHNone
LANTHEUS HLDGS INCLNTHCOM$83,537,709752,999SHNone
SYNDAX PHARMACEUTICALS INCSNDXCOM$82,628,6143,779,900SHNone
ZENAS BIOPHARMA INCUnresolvedNOTE 2.500% 4/0$80,316,09667,200,000PRNNone
BIOMARIN PHARMACEUTICAL INCBMRNCOM$76,264,8761,332,836SHNone
PFIZER INCPFECOM$73,203,2003,040,000SHNone
INDIVIOR PHARMACEUTICALS INCINDVCOM$67,654,1621,648,895SHNone
BIO RAD LABS INCBIOCL A$66,376,413226,070SHNone
ARS PHARMACEUTICALS INCSPRYCOM$60,105,5347,503,812SHNone
STOKE THERAPEUTICS INCSTOKCOM$59,664,9201,823,500SHNone
STRUCTURE THERAPEUTICS INCGPCRSPONSORED ADS$58,285,6201,086,000SHNone
ENVISTA HOLDINGS CORPORATIONNVSTCOM$58,236,1352,210,100SHNone
INSPIRE MED SYS INCINSPCOM$57,853,0141,296,862SHNone
CAREDX INCCDNACOM$56,932,1131,997,618SHNone
BOSTON SCIENTIFIC CORPBSXCOM$56,124,2001,315,000SHNone
BELITE BIO INCBLTESPONSORED ADS$55,003,288357,199SHNone
PARABILIS MEDICINES INCPBLSCOM$51,474,8681,880,704SHNone
CERTARA INCCERTCOM$49,209,6787,512,928SHNone
DISC MEDICINE INCIRONCOM$48,052,980657,000SHNone

Largest 50 positions by reported value; the filing may contain more positions.

How amendments affect these holdings

This view uses 1 effective filing version(s). A restatement replaces the previous book; a new-holdings amendment adds positions. 8 positions lack a resolved ticker and 0 positions are put or call entries.

A 13F is a delayed quarterly snapshot of disclosed holdings. It is not a complete trade ledger and does not reveal every position in a manager's portfolio. Option values refer to the reported underlying position rather than a traded option premium.

Quarter end and public filing date

Use the filing's public availability date when constructing a historical observation. The quarter-end report period is earlier and cannot be substituted for when the public learned the holdings.