Arkolith/Funds/DEERFIELD MANAGEMENT COMPANY, L.P.

DEERFIELD MANAGEMENT COMPANY, L.P.

CIK: 1009258Q1 2026
Active Filer
Portfolio Value
$8.5B
Positions
162
New Buys
12
80 sold
Changes
15 ↑ / 9 ↓

Top HoldingsQ1 2026

162 total positions
#SecurityValueShares% PortChangeΔ Shares
1NUVALENT INC
COM
$1.8B17.25M20.8%
HELD
0
2BROOKDALE SR LIVING INC
NOTE 3.500%10/1
$505.4M306.88M6.0%
HELD
0
3COGENT BIOSCIENCES INC
COM
$348.1M9.04M4.1%
HELD
0
4PRAXIS PRECISION MEDICINES I
COM NEW
$310.4M963.4K3.7%
ADDED
+60.0K
5VIATRIS INC
COM
$273.0M20.21M3.2%
HELD
0
6UNITED THERAPEUTICS CORP DEL
COM
$271.0M457.0K3.2%
ADDED
+31.0K
7REVOLUTION MEDICINES INC
COM
$223.4M2.30M2.6%
REDUCED
-597,613
8MIRUM PHARMACEUTICALS INC
NOTE 4.000% 5/0
$209.4M70.00M2.5%
HELD
0
9ARROWHEAD PHARMACEUTICALS IN
NOTE 1/1
$207.2M200.00M2.4%
NEW
10CELCUITY INC
COM
$195.6M1.71M2.3%
HELD
0
11CENTENE CORP DEL
COM
$193.7M5.92M2.3%
REDUCED
-530,907
12LARIMAR THERAPEUTICS INC
COM
$160.2M35.61M1.9%
ADDED
+5.00M
13BROOKDALE SR LIVING INC
COM
$159.2M11.64M1.9%
HELD
0
14VERA THERAPEUTICS INC
CL A
$149.7M3.72M1.8%
REDUCED
-337,595
15IONIS PHARMACEUTICALS INC
COM
$148.7M1.98M1.8%
HELD
0
16BIOCRYST PHARMACEUTICALS INC
COM
$143.2M15.04M1.7%
ADDED
+697.0K
17INSPIRE MED SYS INC
COM
$139.4M2.70M1.6%
ADDED
+1.20M
18LEGEND BIOTECH CORP
SPONSORED ADS
$139.1M7.69M1.6%
ADDED
+1.76M
19ADAPTHEALTH CORP
COMMON STOCK
$136.6M11.48M1.6%
HELD
0
20
NEWAMSTERDAM PHARMA COMPANY
ORDINARY SHARES
$136.5M4.26M1.6%
ADDED
+100.0K
21ACADIA HEALTHCARE COMPANY IN
COM
$105.7M4.52M1.2%
HELD
0
22ARROWHEAD PHARMACEUTICALS IN
COM
$98.6M1.57M1.2%
REDUCED
-259,649
23CATALYST PHARMACEUTICALS INC
COM
$97.6M3.94M1.2%
REDUCED
-967,561
24INDIVIOR PHARMACEUTICALS INC
COM
$94.4M3.10M1.1%
NEW
25XENON PHARMACEUTICALS INC
COM
$94.0M1.62M1.1%
ADDED
+1.07M
Showing top 25 of 162 positions

Filing History

Q1 202682 pos
$8.5B
Q4 2025150 pos
$7.8B

Data Source

Holdings data sourced from SEC EDGAR 13F-HR filings. Updated quarterly, approximately 45 days after quarter end. All data is public domain.

Last filed: May 15, 2026