Filed: 8/14/2026ACC: 0001213900-26-089991
📋 What this filing means
DEERFIELD MANAGEMENT COMPANY, L.P. filed this quarterly 13F‑HR report disclosing 82 equity positions with a total reported market value of $9.59B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
82
Positions
$9.59B
Total AUM (reported)
1.33B
Total Shares
Allocation by class
COM$6.47B67.5%
NOTE 3.500%10/1$585.70M6.1%
SPONSORED ADS$536.89M5.6%
COM NEW$409.59M4.3%
NOTE 0.500% 5/0$251.68M2.6%
NOTE 1/1$240.54M2.5%
CL A$234.43M2.4%
Portfolio Concentration
Top 3$3.16B33.0%
4–10$1.93B20.2%
11–25$2.18B22.7%
Rest$2.31B24.1%
Top 3 weight
33.0%
Top 10 weight
53.2%
Voting Authority Distribution
Total shares with voting rights: 1.33B
Sole
Full voting authority
1.33B
shares
% of voting shares100.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole0
Shared0
Other82
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings82
Rows:
NUVALENT INC
DFNDShares17.25M
TypeSH
Market value$2.13B
22.22%
Sole
17.25M
Shared
0.00
None
0.00
BROOKDALE SR LIVING INC
DFNDShares306.88M
TypePRN
Market value$585.70M
6.11%
Sole
306.88M
Shared
0.00
None
0.00
REVOLUTION MEDICINES INC
DFNDShares2.39M
TypeSH
Market value$447.97M
4.67%
Sole
2.39M
Shared
0.00
None
0.00
PRAXIS PRECISION MEDICINES I
DFNDShares963.35K
TypeSH
Market value$322.52M
3.36%
Sole
963.35K
Shared
0.00
None
0.00
VIATRIS INC
DFNDShares20.21M
TypeSH
Market value$320.87M
3.35%
Sole
20.21M
Shared
0.00
None
0.00
CENTENE CORP DEL
DFNDShares4.90M
TypeSH
Market value$314.60M
3.28%
Sole
4.90M
Shared
0.00
None
0.00
REVOLUTION MEDICINES INC
DFNDShares200M
TypePRN
Market value$251.68M
2.63%
Sole
200M
Shared
0.00
None
0.00
UNITED THERAPEUTICS CORP DEL
DFNDShares457K
TypeSH
Market value$247.62M
2.58%
Sole
457K
Shared
0.00
None
0.00
ARROWHEAD PHARMACEUTICALS IN
DFNDShares200M
TypePRN
Market value$240.54M
2.51%
Sole
200M
Shared
0.00
None
0.00
LEGEND BIOTECH CORP
DFNDShares8.14M
TypeSH
Market value$235.01M
2.45%
Sole
8.14M
Shared
0.00
None
0.00
COGENT BIOSCIENCES INC
DFNDShares5.01M
TypeSH
Market value$193.74M
2.02%
Sole
5.01M
Shared
0.00
None
0.00
GENMAB A/S
DFNDShares6.87M
TypeSH
Market value$188.58M
1.97%
Sole
6.87M
Shared
0.00
None
0.00
BROOKDALE SR LIVING INC
DFNDShares11.64M
TypeSH
Market value$187.24M
1.95%
Sole
11.64M
Shared
0.00
None
0.00
VERA THERAPEUTICS INC
DFNDShares3.92M
TypeSH
Market value$168.05M
1.75%
Sole
3.92M
Shared
0.00
None
0.00
IONIS PHARMACEUTICALS INC
DFNDShares1.98M
TypeSH
Market value$156.97M
1.64%
Sole
1.98M
Shared
0.00
None
0.00
CELCUITY INC
DFNDShares1.45M
TypeSH
Market value$151.81M
1.58%
Sole
1.45M
Shared
0.00
None
0.00
BIOCRYST PHARMACEUTICALS INC
DFNDShares15.10M
TypeSH
Market value$150.96M
1.57%
Sole
15.10M
Shared
0.00
None
0.00
NEWAMSTERDAM PHARMA COMPANY
DFNDShares4.26M
TypeSH
Market value$144.53M
1.51%
Sole
4.26M
Shared
0.00
None
0.00
ACADIA HEALTHCARE COMPANY IN
DFNDShares4.52M
TypeSH
Market value$133.48M
1.39%
Sole
4.52M
Shared
0.00
None
0.00
TANGO THERAPEUTICS INC
DFNDShares4.19M
TypeSH
Market value$131.00M
1.37%
Sole
4.19M
Shared
0.00
None
0.00
ADAPTHEALTH CORP
DFNDShares11.48M
TypeSH
Market value$119.60M
1.25%
Sole
11.48M
Shared
0.00
None
0.00
PHARVARIS N V
DFNDShares3.38M
TypeSH
Market value$116.74M
1.22%
Sole
3.38M
Shared
0.00
None
0.00
CELCUITY INC
DFNDShares100M
TypePRN
Market value$113.78M
1.19%
Sole
100M
Shared
0.00
None
0.00
ARROWHEAD PHARMACEUTICALS IN
DFNDShares1.39M
TypeSH
Market value$113.22M
1.18%
Sole
1.39M
Shared
0.00
None
0.00
DIANTHUS THERAPEUTICS INC
DFNDShares1.13M
TypeSH
Market value$109.70M
1.14%
Sole
1.13M
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
NUVALENT INCDFND | COM | 17.25M | SH | $2.13B 22.22% | 17.25M | 0.00 | 0.00 |
BROOKDALE SR LIVING INCDFND | NOTE 3.500%10/1 | 306.88M | PRN | $585.70M 6.11% | 306.88M | 0.00 | 0.00 |
REVOLUTION MEDICINES INCDFND | COM | 2.39M | SH | $447.97M 4.67% | 2.39M | 0.00 | 0.00 |
PRAXIS PRECISION MEDICINES IDFND | COM NEW | 963.35K | SH | $322.52M 3.36% | 963.35K | 0.00 | 0.00 |
VIATRIS INCDFND | COM | 20.21M | SH | $320.87M 3.35% | 20.21M | 0.00 | 0.00 |
CENTENE CORP DELDFND | COM | 4.90M | SH | $314.60M 3.28% | 4.90M | 0.00 | 0.00 |
REVOLUTION MEDICINES INCDFND | NOTE 0.500% 5/0 | 200M | PRN | $251.68M 2.63% | 200M | 0.00 | 0.00 |
UNITED THERAPEUTICS CORP DELDFND | COM | 457K | SH | $247.62M 2.58% | 457K | 0.00 | 0.00 |
ARROWHEAD PHARMACEUTICALS INDFND | NOTE 1/1 | 200M | PRN | $240.54M 2.51% | 200M | 0.00 | 0.00 |
LEGEND BIOTECH CORPDFND | SPONSORED ADS | 8.14M | SH | $235.01M 2.45% | 8.14M | 0.00 | 0.00 |
COGENT BIOSCIENCES INCDFND | COM | 5.01M | SH | $193.74M 2.02% | 5.01M | 0.00 | 0.00 |
GENMAB A/SDFND | SPONSORED ADS | 6.87M | SH | $188.58M 1.97% | 6.87M | 0.00 | 0.00 |
BROOKDALE SR LIVING INCDFND | COM | 11.64M | SH | $187.24M 1.95% | 11.64M | 0.00 | 0.00 |
VERA THERAPEUTICS INCDFND | CL A | 3.92M | SH | $168.05M 1.75% | 3.92M | 0.00 | 0.00 |
IONIS PHARMACEUTICALS INCDFND | COM | 1.98M | SH | $156.97M 1.64% | 1.98M | 0.00 | 0.00 |
CELCUITY INCDFND | COM | 1.45M | SH | $151.81M 1.58% | 1.45M | 0.00 | 0.00 |
BIOCRYST PHARMACEUTICALS INCDFND | COM | 15.10M | SH | $150.96M 1.57% | 15.10M | 0.00 | 0.00 |
NEWAMSTERDAM PHARMA COMPANYDFND | ORDINARY SHARES | 4.26M | SH | $144.53M 1.51% | 4.26M | 0.00 | 0.00 |
ACADIA HEALTHCARE COMPANY INDFND | COM | 4.52M | SH | $133.48M 1.39% | 4.52M | 0.00 | 0.00 |
TANGO THERAPEUTICS INCDFND | COM | 4.19M | SH | $131.00M 1.37% | 4.19M | 0.00 | 0.00 |
ADAPTHEALTH CORPDFND | COMMON STOCK | 11.48M | SH | $119.60M 1.25% | 11.48M | 0.00 | 0.00 |
PHARVARIS N VDFND | COM | 3.38M | SH | $116.74M 1.22% | 3.38M | 0.00 | 0.00 |
CELCUITY INCDFND | NOTE 0.250% 8/0 | 100M | PRN | $113.78M 1.19% | 100M | 0.00 | 0.00 |
ARROWHEAD PHARMACEUTICALS INDFND | COM | 1.39M | SH | $113.22M 1.18% | 1.39M | 0.00 | 0.00 |
DIANTHUS THERAPEUTICS INCDFND | COM | 1.13M | SH | $109.70M 1.14% | 1.13M | 0.00 | 0.00 |
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