# DEERFIELD MANAGEMENT COMPANY, L.P.: Form 13F holdings

An institutional investment manager in New York, NY. SEC CIK 1009258.

- Quarter ended: 2026-06-30
- Filed: 2026-08-14
- Reported value: $9.59bn
- Positions: 82 (82 lines in the filing's table; lines for the same security and option type are added together here)
- Compared with: the 13F for the quarter ended 2026-03-31
- Filing: https://www.sec.gov/Archives/edgar/data/1009258/000121390026089991/

## Holdings

As filed, largest first. Reported value is what the manager stated at the quarter end (Jun 30, 2026), in US dollars; it is filing data, not a price. Weight is the share of the total reported value.

| Issuer | Class | Reported value | Weight | Shares | Put or call | Change on the quarter before |
| --- | --- | ---: | ---: | ---: | --- | --- |
| NUVALENT INC | COM | $2.13bn | 22.2% | 17,248,450 |  | Unchanged |
| BROOKDALE SR LIVING INC | NOTE   3.500%10/1 | $585.7m | 6.1% | $306,885,000 principal |  | Unchanged |
| [REVOLUTION MEDICINES INC (RVMD)](/companies/rvmd.md) | COM | $448.0m | 4.7% | 2,392,000 |  | Added +95,000 |
| [PRAXIS PRECISION MEDICINES I (PRAX)](/companies/prax.md) | COM NEW | $322.5m | 3.4% | 963,351 |  | Unchanged |
| [VIATRIS INC (VTRS)](/companies/vtrs.md) | COM | $320.9m | 3.3% | 20,206,170 |  | Unchanged |
| [CENTENE CORP DEL (CNC)](/companies/cnc.md) | COM | $314.6m | 3.3% | 4,901,000 |  | Reduced −1,016,091 |
| REVOLUTION MEDICINES INC | NOTE 0.500% 5/0 | $251.7m | 2.6% | $200,000,000 principal |  | New +200,000,000 |
| [UNITED THERAPEUTICS CORP DEL (UTHR)](/companies/uthr.md) | COM | $247.6m | 2.6% | 457,000 |  | Unchanged |
| ARROWHEAD PHARMACEUTICALS IN | NOTE           1/1 | $240.5m | 2.5% | $200,000,000 principal |  | Unchanged |
| [LEGEND BIOTECH CORP (LEGN)](/companies/legn.md) | SPONSORED ADS | $235.0m | 2.5% | 8,137,638 |  | Added +450,000 |
| [COGENT BIOSCIENCES INC (COGT)](/companies/cogt.md) | COM | $193.7m | 2.0% | 5,006,104 |  | Reduced −4,037,799 |
| [GENMAB A/S (GMAB)](/companies/gmab.md) | SPONSORED ADS | $188.6m | 2.0% | 6,865,000 |  | Added +4,403,000 |
| [BROOKDALE SR LIVING INC (BKD)](/companies/bkd.md) | COM | $187.2m | 2.0% | 11,637,032 |  | Unchanged |
| [VERA THERAPEUTICS INC (VERA)](/companies/vera.md) | CL A | $168.1m | 1.8% | 3,916,400 |  | Added +194,300 |
| [IONIS PHARMACEUTICALS INC (IONS)](/companies/ions.md) | COM | $157.0m | 1.6% | 1,979,669 |  | Unchanged |
| [CELCUITY INC (CELC)](/companies/celc.md) | COM | $151.8m | 1.6% | 1,451,014 |  | Reduced −262,986 |
| [BIOCRYST PHARMACEUTICALS INC (BCRX)](/companies/bcrx.md) | COM | $151.0m | 1.6% | 15,096,403 |  | Added +58,403 |
| NEWAMSTERDAM PHARMA COMPANY | ORDINARY SHARES | $144.5m | 1.5% | 4,264,789 |  | Unchanged |
| [ACADIA HEALTHCARE COMPANY IN (ACHC)](/companies/achc.md) | COM | $133.5m | 1.4% | 4,520,000 |  | Unchanged |
| [TANGO THERAPEUTICS INC (TNGX)](/companies/tngx.md) | COM | $131.0m | 1.4% | 4,190,611 |  | Added +43,798 |
| [ADAPTHEALTH CORP (AHCO)](/companies/ahco.md) | COMMON STOCK | $119.6m | 1.2% | 11,477,730 |  | Unchanged |
| PHARVARIS N V | COM | $116.7m | 1.2% | 3,376,042 |  | Added +250,000 |
| CELCUITY INC | NOTE 0.250% 8/0 | $113.8m | 1.2% | $100,000,000 principal |  | New +100,000,000 |
| [ARROWHEAD PHARMACEUTICALS IN (ARWR)](/companies/arwr.md) | COM | $113.2m | 1.2% | 1,389,055 |  | Reduced −184,242 |
| [DIANTHUS THERAPEUTICS INC (DNTH)](/companies/dnth.md) | COM | $109.7m | 1.1% | 1,125,313 |  | Added +105,500 |
| [LARIMAR THERAPEUTICS INC (LRMR)](/companies/lrmr.md) | COM | $108.6m | 1.1% | 35,606,974 |  | Unchanged |
| [MINERALYS THERAPEUTICS INC (MLYS)](/companies/mlys.md) | COM | $106.8m | 1.1% | 3,958,000 |  | New +3,958,000 |
| ALIGNMENT HEALTHCARE INC | NOTE   4.250%11/1 | $103.8m | 1.1% | $61,000,000 principal |  | Unchanged |
| [IDEAYA BIOSCIENCES INC (IDYA)](/companies/idya.md) | COM | $101.2m | 1.1% | 2,714,503 |  | Added +1,184,495 |
| [XENON PHARMACEUTICALS INC (XENE)](/companies/xene.md) | COM | $97.5m | 1.0% | 1,615,696 |  | Unchanged |
| IONIS PHARMACEUTICALS INC | NOTE   1.750% 6/1 | $93.1m | 1.0% | $60,000,000 principal |  | Unchanged |
| [SAVARA INC (SVRA)](/companies/svra.md) | COM | $83.6m | 0.9% | 13,569,000 |  | Unchanged |
| [LANTHEUS HLDGS INC (LNTH)](/companies/lnth.md) | COM | $83.5m | 0.9% | 752,999 |  | Reduced −75,000 |
| [SYNDAX PHARMACEUTICALS INC (SNDX)](/companies/sndx.md) | COM | $82.6m | 0.9% | 3,779,900 |  | Unchanged |
| ZENAS BIOPHARMA INC | NOTE   2.500% 4/0 | $80.3m | 0.8% | $67,200,000 principal |  | Added +2,200,000 |
| [BIOMARIN PHARMACEUTICAL INC (BMRN)](/companies/bmrn.md) | COM | $76.3m | 0.8% | 1,332,836 |  | Added +481,280 |
| [PFIZER INC (PFE)](/companies/pfe.md) | COM | $73.2m | 0.8% | 3,040,000 |  | Unchanged |
| [INDIVIOR PHARMACEUTICALS INC (INDV)](/companies/indv.md) | COM | $67.7m | 0.7% | 1,648,895 |  | Reduced −1,448,895 |
| [BIO RAD LABS INC (BIO)](/companies/bio.md) | CL A | $66.4m | 0.7% | 226,070 |  | Unchanged |
| [ARS PHARMACEUTICALS INC (SPRY)](/companies/spry.md) | COM | $60.1m | 0.6% | 7,503,812 |  | Unchanged |
| [STOKE THERAPEUTICS INC (STOK)](/companies/stok.md) | COM | $59.7m | 0.6% | 1,823,500 |  | Unchanged |
| [STRUCTURE THERAPEUTICS INC (GPCR)](/companies/gpcr.md) | SPONSORED ADS | $58.3m | 0.6% | 1,086,000 |  | Added +318,007 |
| [ENVISTA HOLDINGS CORPORATION (NVST)](/companies/nvst.md) | COM | $58.2m | 0.6% | 2,210,100 |  | Unchanged |
| [INSPIRE MED SYS INC (INSP)](/companies/insp.md) | COM | $57.9m | 0.6% | 1,296,862 |  | Reduced −1,406,376 |
| [CAREDX INC (CDNA)](/companies/cdna.md) | COM | $56.9m | 0.6% | 1,997,618 |  | Reduced −193,382 |
| [BOSTON SCIENTIFIC CORP (BSX)](/companies/bsx.md) | COM | $56.1m | 0.6% | 1,315,000 |  | New +1,315,000 |
| [BELITE BIO INC (BLTE)](/companies/blte.md) | SPONSORED ADS | $55.0m | 0.6% | 357,199 |  | Added +53,186 |
| [PARABILIS MEDICINES INC (PBLS)](/companies/pbls.md) | COM | $51.5m | 0.5% | 1,880,704 |  | New +1,880,704 |
| [CERTARA INC (CERT)](/companies/cert.md) | COM | $49.2m | 0.5% | 7,512,928 |  | Reduced −295,677 |
| [DISC MEDICINE INC (IRON)](/companies/iron.md) | COM | $48.1m | 0.5% | 657,000 |  | Unchanged |
| LIVANOVA PLC | NOTE   2.500% 3/1 | $46.5m | 0.5% | $34,280,000 principal |  | Unchanged |
| [BRIDGEBIO ONCOLOGY THERAPEUT (BBOT)](/companies/bbot.md) | COM NEW | $37.2m | 0.4% | 4,885,446 |  | Unchanged |
| [TYRA BIOSCIENCES INC (TYRA)](/companies/tyra.md) | COM | $32.5m | 0.3% | 1,017,000 |  | Added +468,000 |
| [MONOPAR THERAPEUTICS INC (MNPR)](/companies/mnpr.md) | COM NEW | $30.0m | 0.3% | 323,745 |  | Unchanged |
| [SIONNA THERAPEUTICS INC (SION)](/companies/sion.md) | COM | $30.0m | 0.3% | 680,916 |  | Reduced −289,674 |
| IMMUNOCORE HLDGS PLC | NOTE   2.500% 2/0 | $27.1m | 0.3% | $30,000,000 principal |  | Unchanged |
| [AVALYN PHARMACEUTICALS INC (AVLN)](/companies/avln.md) | COM SHS | $24.1m | 0.3% | 731,000 |  | New +731,000 |
| [FOGHORN THERAPEUTICS INC (FHTX)](/companies/fhtx.md) | COM | $21.4m | 0.2% | 4,394,367 |  | Unchanged |
| [BETA BIONICS INC (BBNX)](/companies/bbnx.md) | COM | $20.7m | 0.2% | 1,324,000 |  | Unchanged |
| [ALNYLAM PHARMACEUTICALS INC (ALNY)](/companies/alny.md) | COM | $20.5m | 0.2% | 67,935 |  | Unchanged |
| [BRIGHT MINDS BIOSCIENCES INC (DRUG)](/companies/drug.md) | COM NEW | $19.9m | 0.2% | 283,000 |  | Unchanged |
| [ODYSSEY THERAPEUTICS INC (ODTX)](/companies/odtx.md) | COMMON STOCK | $19.6m | 0.2% | 1,046,139 |  | New +1,046,139 |
| [THE ONCOLOGY INSTITUTE INC (STLN)](/companies/stln.md) | COM | $18.2m | 0.2% | 3,360,052 |  | Unchanged |
| [KYVERNA THERAPEUTICS INC (KYTX)](/companies/kytx.md) | COM | $17.8m | 0.2% | 2,000,000 |  | Unchanged |
| [ALAMAR BIOSCIENCES INC (ALMR)](/companies/almr.md) | COMMON STOCK | $16.3m | 0.2% | 600,000 |  | New +600,000 |
| [CHEMED CORP NEW (CHE)](/companies/che.md) | COM | $14.0m | 0.1% | 30,000 |  | New +30,000 |
| [SPYGLASS PHARMA INC (SGP)](/companies/sgp.md) | COM SHS | $12.2m | 0.1% | 550,000 |  | Unchanged |
| NEOGENOMICS INC | NOTE   0.250% 1/1 | $12.2m | 0.1% | $13,040,000 principal |  | Reduced −59,649,000 |
| [ADAGENE INC (ADAG)](/companies/adag.md) | ADS | $11.2m | 0.1% | 2,666,666 |  | New +2,666,666 |
| [HEMAB THERAPEUTICS HLDGS INC (COAG)](/companies/coag.md) | COM SHS | $10.1m | 0.1% | 275,000 |  | New +275,000 |
| [MOBIA MED INC (MOBI)](/companies/mobi.md) | COMMON STOCK | $9.0m | <0.1% | 670,752 |  | New +670,752 |
| [EMBECTA CORP (EMBC)](/companies/embc.md) | COMMON STOCK | $8.3m | <0.1% | 2,534,961 |  | Unchanged |
| [VERACYTE INC (VCYT)](/companies/vcyt.md) | COM | $5.9m | <0.1% | 101,000 |  | Reduced −625,000 |
| [ANNEXON INC (ANNX)](/companies/annx.md) | COM | $3.3m | <0.1% | 583,913 |  | Unchanged |
| [ALECTOR INC (ALEC)](/companies/alec.md) | COM | $2.1m | <0.1% | 1,055,192 |  | Unchanged |
| NEWAMSTERDAM PHARMA COMPANY | \*W EXP 99/99/999 | $2.0m | <0.1% | 92,787 |  | Unchanged |
| [EDWARDS LIFESCIENCES CORP (EW)](/companies/ew.md) | COM | $1.2m | <0.1% | 13,702 |  | Unchanged |
| [MIRUM PHARMACEUTICALS INC (MIRM)](/companies/mirm.md) | COM | $705.6k | <0.1% | 6,027 |  | New +6,027 |
| [HUMANA INC (HUM)](/companies/hum.md) | COM | $364.3k | <0.1% | 917 |  | Unchanged |
| [THE ONCOLOGY INSTITUTE INC (STLN)](/companies/stln.md) | \*W EXP 99/99/999 | $51.0k | <0.1% | 1,250,000 |  | Unchanged |
| [PMV PHARMACEUTICALS INC (PMVP)](/companies/pmvp.md) | COM | $11.8k | <0.1% | 8,790 |  | Unchanged |
| SURROZEN INC | \*W EXP 08/01/203 | $2.8k | <0.1% | 166,666 |  | Unchanged |

## Sold out

Held at the end of the quarter before and not reported this quarter.

| Issuer | Class | Reported value | Weight | Shares | Put or call | Change on the quarter before |
| --- | --- | ---: | ---: | ---: | --- | --- |
| BIOMX INC | COM NEW | $0 | 0.0% | 0 |  | Sold out −131,272 |
| CATALYST PHARMACEUTICALS INC | COM | $0 | 0.0% | 0 |  | Sold out −3,943,600 |
| [COMPASS THERAPEUTICS INC (CMPX)](/companies/cmpx.md) | COM | $0 | 0.0% | 0 |  | Sold out −3,606,000 |
| [CULLINAN THERAPEUTICS INC (CGEM)](/companies/cgem.md) | COM | $0 | 0.0% | 0 |  | Sold out −386,169 |
| DAY ONE BIOPHARMACEUTICALS I | COM | $0 | 0.0% | 0 |  | Sold out −3,723,131 |
| ENHABIT INC | COM | $0 | 0.0% | 0 |  | Sold out −4,747,746 |
| [KYMERA THERAPEUTICS INC (KYMR)](/companies/kymr.md) | COM | $0 | 0.0% | 0 |  | Sold out −561,170 |
| MIRUM PHARMACEUTICALS INC | NOTE   4.000% 5/0 | $0 | 0.0% | $0 principal |  | Sold out −70,000,000 |
| [MYRIAD GENETICS INC (MYGN)](/companies/mygn.md) | COM | $0 | 0.0% | 0 |  | Sold out −505 |
| [NEUROCRINE BIOSCIENCES INC (NBIX)](/companies/nbix.md) | COM | $0 | 0.0% | 0 |  | Sold out −610,000 |
| QUANTUM SI INC | \*W EXP 06/10/202 | $0 | 0.0% | 0 |  | Sold out −333,333 |
| [TAYSHA GENE THERAPIES INC (TSHA)](/companies/tsha.md) | COM SHS | $0 | 0.0% | 0 |  | Sold out −2,722,165 |
| [VERADERMICS INC (MANE)](/companies/mane.md) | COMMON STOCK | $0 | 0.0% | 0 |  | Sold out −5,000 |

Source: SEC EDGAR, Form 13F-HR, accession 0001213900-26-089991. Last ingested by Listed: Oct 22, 2026, 05:26 ET. No prices; not investment advice.