Filed: 5/15/2025ACC: 0001213900-25-044138
📋 What this filing means
DEERFIELD MANAGEMENT COMPANY, L.P. filed this quarterly 13F‑HR report disclosing 123 equity positions with a total reported market value of $5.06B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
123
Positions
$5.06B
Total AUM (reported)
819.54M
Total Shares
Allocation by class
COM$3.53B69.6%
CL A$235.62M4.7%
NOTE 0.500% 8/1$170.98M3.4%
COM NEW$159.91M3.2%
COMMON STOCK$154.06M3.0%
NOTE 0.500% 4/0$130.63M2.6%
NOTE 1.000% 9/1$126.87M2.5%
Portfolio Concentration
Top 3$1.66B32.7%
4–10$1.01B19.9%
11–25$1.26B24.8%
Rest$1.15B22.6%
Top 3 weight
32.7%
Top 10 weight
52.5%
Voting Authority Distribution
Total shares with voting rights: 819.54M
Sole
Full voting authority
819.54M
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
Other123
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings123
Rows:
NUVALENT INC
DFNDShares17.99M
TypeSH
Market value$1.28B
25.19%
Sole
17.99M
Shared
0.00
None
0.00
VIATRIS INC
DFNDShares23.99M
TypeSH
Market value$208.97M
4.13%
Sole
23.99M
Shared
0.00
None
0.00
INTEGRA LIFESCIENCES HLDGS C
DFNDShares174.36M
TypePRN
Market value$170.98M
3.38%
Sole
174.36M
Shared
0.00
None
0.00
NEUROCRINE BIOSCIENCES INC
DFNDShares1.49M
TypeSH
Market value$164.68M
3.25%
Sole
1.49M
Shared
0.00
None
0.00
CENTENE CORP DEL
DFNDShares2.67M
TypeSH
Market value$162.21M
3.20%
Sole
2.67M
Shared
0.00
None
0.00
OSCAR HEALTH INC
DFNDShares11.84M
TypeSH
Market value$155.23M
3.06%
Sole
11.84M
Shared
0.00
None
0.00
MERUS N V
DFNDShares3.17M
TypeSH
Market value$133.59M
2.64%
Sole
3.17M
Shared
0.00
None
0.00
ARS PHARMACEUTICALS INC
DFNDShares10.51M
TypeSH
Market value$132.27M
2.61%
Sole
10.51M
Shared
0.00
None
0.00
ACCOLADE INC
DFNDShares132.60M
TypePRN
Market value$130.63M
2.58%
Sole
132.60M
Shared
0.00
None
0.00
ALNYLAM PHARMACEUTICALS INC
DFNDShares110M
TypePRN
Market value$126.87M
2.50%
Sole
110M
Shared
0.00
None
0.00
REVOLUTION MEDICINES INC
DFNDShares3.32M
TypeSH
Market value$117.30M
2.32%
Sole
3.32M
Shared
0.00
None
0.00
MIRUM PHARMACEUTICALS INC
DFNDShares70M
TypePRN
Market value$114.51M
2.26%
Sole
70M
Shared
0.00
None
0.00
ADAPTHEALTH CORP
DFNDShares9.71M
TypeSH
Market value$105.27M
2.08%
Sole
9.71M
Shared
0.00
None
0.00
INDIVIOR PLC
DFNDShares10.57M
TypeSH
Market value$100.71M
1.99%
Sole
10.57M
Shared
0.00
None
0.00
BROOKDALE SR LIVING INC
DFNDShares15.61M
TypeSH
Market value$97.73M
1.93%
Sole
15.61M
Shared
0.00
None
0.00
ALIGNMENT HEALTHCARE INC
DFNDShares4.57M
TypeSH
Market value$85.05M
1.68%
Sole
4.57M
Shared
0.00
None
0.00
UNITED THERAPEUTICS CORP DEL
DFNDShares275.23K
TypeSH
Market value$84.84M
1.68%
Sole
275.23K
Shared
0.00
None
0.00
PFIZER INC
DFNDShares3.35M
TypeSH
Market value$84.82M
1.67%
Sole
3.35M
Shared
0.00
None
0.00
NEWAMSTERDAM PHARMA COMPANY
DFNDShares4.10M
TypeSH
Market value$84.01M
1.66%
Sole
4.10M
Shared
0.00
None
0.00
CATALYST PHARMACEUTICALS INC
DFNDShares3.42M
TypeSH
Market value$82.99M
1.64%
Sole
3.42M
Shared
0.00
None
0.00
DYNAVAX TECHNOLOGIES CORP
DFNDShares5.19M
TypeSH
Market value$67.33M
1.33%
Sole
5.19M
Shared
0.00
None
0.00
BAXTER INTL INC
DFNDShares1.92M
TypeSH
Market value$65.83M
1.30%
Sole
1.92M
Shared
0.00
None
0.00
LEGEND BIOTECH CORP
DFNDShares1.74M
TypeSH
Market value$59.16M
1.17%
Sole
1.74M
Shared
0.00
None
0.00
BIO RAD LABS INC
DFNDShares226.07K
TypeSH
Market value$55.06M
1.09%
Sole
226.07K
Shared
0.00
None
0.00
IDEAYA BIOSCIENCES INC
DFNDShares3.27M
TypeSH
Market value$53.52M
1.06%
Sole
3.27M
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
NUVALENT INCDFND | COM | 17.99M | SH | $1.28B 25.19% | 17.99M | 0.00 | 0.00 |
VIATRIS INCDFND | COM | 23.99M | SH | $208.97M 4.13% | 23.99M | 0.00 | 0.00 |
INTEGRA LIFESCIENCES HLDGS CDFND | NOTE 0.500% 8/1 | 174.36M | PRN | $170.98M 3.38% | 174.36M | 0.00 | 0.00 |
NEUROCRINE BIOSCIENCES INCDFND | COM | 1.49M | SH | $164.68M 3.25% | 1.49M | 0.00 | 0.00 |
CENTENE CORP DELDFND | COM | 2.67M | SH | $162.21M 3.20% | 2.67M | 0.00 | 0.00 |
OSCAR HEALTH INCDFND | CL A | 11.84M | SH | $155.23M 3.06% | 11.84M | 0.00 | 0.00 |
MERUS N VDFND | COM | 3.17M | SH | $133.59M 2.64% | 3.17M | 0.00 | 0.00 |
ARS PHARMACEUTICALS INCDFND | COM | 10.51M | SH | $132.27M 2.61% | 10.51M | 0.00 | 0.00 |
ACCOLADE INCDFND | NOTE 0.500% 4/0 | 132.60M | PRN | $130.63M 2.58% | 132.60M | 0.00 | 0.00 |
ALNYLAM PHARMACEUTICALS INCDFND | NOTE 1.000% 9/1 | 110M | PRN | $126.87M 2.50% | 110M | 0.00 | 0.00 |
REVOLUTION MEDICINES INCDFND | COM | 3.32M | SH | $117.30M 2.32% | 3.32M | 0.00 | 0.00 |
MIRUM PHARMACEUTICALS INCDFND | NOTE 4.000% 5/0 | 70M | PRN | $114.51M 2.26% | 70M | 0.00 | 0.00 |
ADAPTHEALTH CORPDFND | COMMON STOCK | 9.71M | SH | $105.27M 2.08% | 9.71M | 0.00 | 0.00 |
INDIVIOR PLCDFND | ORD | 10.57M | SH | $100.71M 1.99% | 10.57M | 0.00 | 0.00 |
BROOKDALE SR LIVING INCDFND | COM | 15.61M | SH | $97.73M 1.93% | 15.61M | 0.00 | 0.00 |
ALIGNMENT HEALTHCARE INCDFND | COM | 4.57M | SH | $85.05M 1.68% | 4.57M | 0.00 | 0.00 |
UNITED THERAPEUTICS CORP DELDFND | COM | 275.23K | SH | $84.84M 1.68% | 275.23K | 0.00 | 0.00 |
PFIZER INCDFND | COM | 3.35M | SH | $84.82M 1.67% | 3.35M | 0.00 | 0.00 |
NEWAMSTERDAM PHARMA COMPANYDFND | ORDINARY SHARES | 4.10M | SH | $84.01M 1.66% | 4.10M | 0.00 | 0.00 |
CATALYST PHARMACEUTICALS INCDFND | COM | 3.42M | SH | $82.99M 1.64% | 3.42M | 0.00 | 0.00 |
DYNAVAX TECHNOLOGIES CORPDFND | COM NEW | 5.19M | SH | $67.33M 1.33% | 5.19M | 0.00 | 0.00 |
BAXTER INTL INCDFND | COM | 1.92M | SH | $65.83M 1.30% | 1.92M | 0.00 | 0.00 |
LEGEND BIOTECH CORPDFND | SPONSORED ADS | 1.74M | SH | $59.16M 1.17% | 1.74M | 0.00 | 0.00 |
BIO RAD LABS INCDFND | CL A | 226.07K | SH | $55.06M 1.09% | 226.07K | 0.00 | 0.00 |
IDEAYA BIOSCIENCES INCDFND | COM | 3.27M | SH | $53.52M 1.06% | 3.27M | 0.00 | 0.00 |
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