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Deerfield Management Company, L.P.

← All funds

13F holdings as of 2024-12-31 · vs 2024-09-30 · long US-listed positions only

2026-03-312025-12-312025-09-302025-06-302025-03-312024-12-312024-09-302024-06-30
Reported 13F value
$5.26B
Positions
105
New this quarter
22
Exited this quarter
360
Top-10 concentration
54%
Options (notional)0 calls · $01 puts · $23.0M
#HoldingSharesValue% of 13FQoQ Δ
1NUVLNUVALENT INCTRIM18.0M$1.41B26.8%-$636.7M
2VTRSVIATRIS INCADD24.0M$298.8M5.7%+$20.2M
3457985AM1174.4M$168.2M3.2%+$2.4M
4CNCCENTENE CORP DELADD2.7M$161.9M3.1%-$37.8M
5OSCROSCAR HEALTH INCADD11.8M$159.1M3.0%-$7.5M
6RVMDREVOLUTION MEDICINES INCADD3.3M$142.5M2.7%+$10.4M
7N5749R100TRIM3.0M$125.0M2.4%-$45.3M
800437EAB8132.6M$124.5M2.4%+$2.4M
9WAYWAYSTAR HLDG CORPTRIM3.3M$120.9M2.3%-$17.2M
10NBIXNEUROCRINE BIOSCIENCES INCTRIM862K$117.7M2.2%-$34.0M
11ALNY 1 09/15/27ALNYLAM PHARMACEUTICALS INCADD110.0M$117.3M2.2%+$215K
12SPRYARS PHARMACEUTICALS INCTRIM10.5M$110.9M2.1%-$49.7M
13NEWAMSTERDAM PHARMA COMPANYADD4.3M$110.9M2.1%+$95.9M
14INDIVIOR PLCADD8.9M$110.4M2.1%+$60.8M
15MIRM 4 05/01/29MIRUM PHARMACEUTICALS INC70.0M$106.6M2.0%+$3.5M
16AHCOADAPTHEALTH CORP9.7M$92.5M1.8%-$16.6M
17ALHCALIGNMENT HEALTHCARE INCTRIM7.3M$82.2M1.6%-$46.1M
18LRMRLARIMAR THERAPEUTICS INC21.2M$82.2M1.6%-$56.9M
19BKDBROOKDALE SR LIVING INC15.6M$78.5M1.5%-$27.5M
20IDYAIDEAYA BIOSCIENCES INCADD2.7M$70.3M1.3%-$11.9M
21EMBCEMBECTA CORPADD3.3M$67.5M1.3%+$29.0M
22DVAXDYNAVAX TECHNOLOGIES CORPADD5.2M$66.3M1.3%+$66.1M
23CPRXCATALYST PHARMACEUTICALS INCTRIM3.1M$65.4M1.2%-$58.5M
24ACHACCENDRA HEALTH INC4.9M$64.2M1.2%-$12.9M
25BCRXBIOCRYST PHARMACEUTICALS INCADD8.1M$61.2M1.2%-$586K
26BAXBAXTER INTL INC1.9M$56.1M1.1%-$16.9M
27EWTXEDGEWISE THERAPEUTICS INCADD2.1M$55.5M1.1%+$8.0M
28LEGNLEGEND BIOTECH CORPNEW1.6M$50.5M1.0%new
29BIOBIO RAD LABS INCADD152K$49.8M0.9%-$897K
30ATEC 0.75 08/01/26ALPHATEC HLDGS INCTRIM49.5M$46.7M0.9%-$59.0M
31CNMDCONMED CORPTRIM612K$41.9M0.8%-$2.3M
32CGEMCULLINAN THERAPEUTICS INCADD3.4M$41.2M0.8%-$13.7M
33EHABUSDENHABIT INCADD5.0M$39.1M0.7%-$347K
34LKFTGALAPAGOS NV1.4M$38.8M0.7%-$1.8M
35PHARVARIS N VTRIM2.0M$38.7M0.7%+$1.0M
36IRONDISC MEDICINE INCTRIM601K$38.1M0.7%-$12.2M
37ALNYALNYLAM PHARMACEUTICALS INCADD145K$34.2M0.6%-$5.7M
38LNTH 2.625 12/15/27LANTHEUS HLDGS INC25.3M$33.7M0.6%-$5.6M
39DAWNGBXDAY ONE BIOPHARMACEUTICALS ITRIM2.6M$32.9M0.6%-$3.6M
40PHRPHREESIA INCADD1.3M$32.0M0.6%+$19.6M
41BCAXBICARA THERAPEUTICS INC1.8M$31.3M0.6%-$14.5M
42DCGODOCGO INCTRIM7.2M$30.5M0.6%+$411K
43INMODE LTD1.6M$26.4M0.5%-$395K
44SVRASAVARA INCADD8.0M$24.4M0.5%-$3.0M
45CGONCG ONCOLOGY INCADD852K$24.4M0.5%-$7.7M
46KYMRKYMERA THERAPEUTICS INCNEW593K$23.9M0.5%new
47MREOMEREO BIOPHARMA GROUP PLC6.7M$23.5M0.4%-$4.1M
48TXG10X GENOMICS INCTRIM1.5M$21.5M0.4%-$12.6M
49LNTHLANTHEUS HLDGS INC240K$21.5M0.4%-$4.9M
50COGTCOGENT BIOSCIENCES INCTRIM2.6M$20.5M0.4%-$19.9M
51SEPNSEPTERNA INCNEW862K$19.7M0.4%new
52NVSTENVISTA HOLDINGS CORPORATIONADD1.0M$19.6M0.4%+$19.2M
53PCVXVAXCYTE INC225K$18.4M0.4%-$7.3M
54RXRXRECURSION PHARMACEUTICALS IN2.3M$15.6M0.3%+$394K
55FHTXFOGHORN THERAPEUTICS INCADD3.3M$15.4M0.3%-$12.8M
56IRTCIRHYTHM HOLDINGS INCNEW156K$14.1M0.3%new
5716934W106NEW3.8M$13.1M0.2%new
58CONCONCENTRA GROUP HOLDINGS PAR650K$12.9M0.2%-$1.7M
59ZBIOZENAS BIOPHARMA INC1.6M$12.8M0.2%-$13.6M
6000437E1023.5M$11.9M0.2%-$1.5M
6188427A107NEW1.0M$10.5M0.2%new
62SYRESPYRE THERAPEUTICS INCNEW450K$10.5M0.2%new
63LUNGPULMONX CORPNEW1.5M$10.4M0.2%new
64DYNDYNE THERAPEUTICS INC436K$10.3M0.2%-$5.4M
65NGNENEUROGENE INCNEW448K$10.2M0.2%new
66GPCRSTRUCTURE THERAPEUTICS INCTRIM373K$10.1M0.2%-$26.9M
67CATXPERSPECTIVE THERAPEUTICS INCADD2.9M$9.4M0.2%-$28.2M
68FATEFATE THERAPEUTICS INC3.6M$5.9M0.1%-$6.6M
69NKTXNKARTA INC2.2M$5.4M0.1%-$4.4M
70CRVSCORVUS PHARMACEUTICALS INCNEW1.0M$5.4M0.1%new
71CALCCALCIMEDICA INCADD1.3M$4.6M0.1%+$172K
7243157M1021.9M$3.9M0.1%+$584K
7382933R308166K$3.2M0.1%+$625K
74ANNXANNEXON INC584K$3.0M0.1%-$461K
75ALECALECTOR INCADD1.1M$2.0M0.0%-$2.9M
76NEWAMSTERDAM PHARMA COMPANY93K$1.3M0.0%+$673K
7709090D3011.8M$1.3M0.0%-$518K
78VTYXUSDVENTYX BIOSCIENCES INCTRIM535K$1.2M0.0%-$13.5M
79TWSTTWIST BIOSCIENCE CORPADD24K$1.1M0.0%+$49K
80TOITHE ONCOLOGY INSTITUTE INC3.4M$1.0M0.0%-$60K
81QSIAWQUANTUM SI INC333K$417K0.0%+$388K
82HUMHUMANA INCNEW917$233K0.0%new
83GISGENERAL MILLS INCNEW3K$220K0.0%new
8429336T100NEW10K$145K0.0%new
85HNSTHONEST CO INCTRIM20K$140K0.0%-$566K
86EBSEMERGENT BIOSOLUTIONS INCTRIM14K$134K0.0%-$497K
87HTLDHEARTLAND EXPRESS INCTRIM12K$130K0.0%-$703K
88UISUNISYS CORPNEW16K$99K0.0%new
89BFLYWBUTTERFLY NETWORK INC733K$93K0.0%+$33K
90EGYVAALCO ENERGY INCNEW21K$91K0.0%new
91410345102TRIM11K$86K0.0%-$525K
92GNWGENWORTH FINL INCTRIM11K$79K0.0%-$250K
93ECVTECOVYST INCNEW10K$79K0.0%new
94CERSCERUS CORPNEW50K$77K0.0%new
95294628102NEW43K$77K0.0%new
96ACCOACCO BRANDS CORPTRIM15K$76K0.0%-$492K
97OSURORASURE TECHNOLOGIES INCTRIM21K$75K0.0%-$615K
98NUSNU SKIN ENTERPRISES INCTRIM10K$70K0.0%-$941K
99GDRXGOODRX HLDGS INCNEW12K$56K0.0%new
100NUVBNUVATION BIO INCNEW20K$54K0.0%new

Showing the top 100 of 105 positions by value.

Source: SEC Form 13F. Values are as-of 2024-12-31 (quarter-end), not live. Percentages are of reported 13F value, not the fund’s full AUM (13F excludes shorts, cash, bonds, most non-US holdings).