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  • DEERFIELD MANAGEMENT COMPANY, L.P. (Data extracted from 13F, 13D, 13G and Form 4)

DEERFIELD MANAGEMENT COMPANY, L.P.

AUM: $16.12 B
13-F Portfolio Value: $5.51 B
Last 13-F Filed: Q2 2025
Concentration in top 10: 54.23%
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Stock Company % Portfolio Shares Held Market Value Change in Shares % Change Quarter End Price Source
NUVLNUVALENT INC24.99%17,991,024$1,372,715,131No Change$76.313F
IARTINTEGRA LIFESCIENCES HLDGS C (PRN)3.15%174,364,000$172,859,587No Change$0.9913F
INDVINDIVIOR PLC2.84%10,567,160$155,759,938No Change$14.7413F
ALNYALNYLAM PHARMACEUTICALS INC (PRN)2.61%110,000,000$143,172,150No Change$1.313F
MIRMMIRUM PHARMACEUTICALS INC (PRN)2.26%70,000,000$124,213,180No Change$1.7713F
BAXBAXTER INTL INC1.06%1,923,100$58,231,468No Change$30.2813F
BIOBIO RAD LABS INC0.99%226,070$54,555,212No Change$241.3213F
ALNYALNYLAM PHARMACEUTICALS INC0.86%145,000$47,283,050No Change$326.0913F
PHVSPHARVARIS N V0.65%2,017,464$35,507,366No Change$17.613F
LNTHLANTHEUS HLDGS INC (PRN)0.58%25,255,000$32,062,687No Change$1.2713F
IMCRIMMUNOCORE HLDGS PLC (PRN)0.47%30,000,000$25,849,740No Change$0.8613F
LQDALIQUIDIA CORPORATION0.37%1,616,778$20,145,054No Change$12.4613F
MREOMEREO BIOPHARMA GROUP PLC0.33%6,710,429$18,185,263No Change$2.7113F
SVRASAVARA INC0.33%7,964,000$18,157,920No Change$2.2813F
XERSXERIS BIOPHARMA HOLDINGS INC (PRN)0.32%10,500,000$17,732,075No Change$1.6913F
FHTXFOGHORN THERAPEUTICS INC0.28%3,255,514$15,300,916No Change$4.713F
ZBIOZENAS BIOPHARMA INC0.28%1,562,942$15,144,908No Change$9.6913F
IARTINTEGRA LIFESCIENCES HLDGS C0.18%794,865$9,752,994No Change$12.2713F
GPCRSTRUCTURE THERAPEUTICS INC0.14%373,407$7,744,461No Change$20.7413F
TOITHE ONCOLOGY INSTITUTE INC0.13%3,360,052$6,888,107No Change$2.0513F
PCVXVAXCYTE INC0.13%225,000$7,314,750No Change$32.5113F
SLPSIMULATIONS PLUS INC0.11%354,089$6,178,853No Change$17.4513F
NPCENEUROPACE INC0.10%500,000$5,570,000No Change$11.1413F
LUNGPULMONX CORP0.09%1,890,000$4,895,100No Change$2.5913F
HLVXHILLEVAX INC0.07%1,882,654$3,746,481No Change$1.9913F
CALCCALCIMEDICA INC0.04%1,300,000$2,080,000No Change$1.613F
ALECALECTOR INC0.03%1,055,192$1,477,269No Change$1.413F
ANNXANNEXON INC0.03%583,913$1,401,391No Change$2.413F
PHGEBIOMX INC0.02%2,494,108$1,122,349No Change$0.4513F
TWSTTWIST BIOSCIENCE CORP0.02%23,827$876,595No Change$36.7913F
NAMSWNEWAMSTERDAM PHARMA COMPANY0.01%92,787$742,296No Change$813F
HUMHUMANA INC0.00408%917$224,188No Change$244.4813F
QSIAWQUANTUM SI INC0.00395%333,333$217,000No Change$0.6513F
TOIIWTHE ONCOLOGY INSTITUTE INC0.00117%1,250,000$64,125No Change$0.0513F
NUVBWSNUVATION BIO INC0.00082%166,666$44,983No Change$0.2713F
BFLYWSBUTTERFLY NETWORK INC0.00081%733,333$44,220No Change$0.0613F
SRZNWSURROZEN INC0.00005%166,666$3,017No Change$0.0213F