2026 Q1 Portfolio Activity
In 2026 Q1, DEERFIELD MANAGEMENT COMPANY, L.P. maintained a portfolio of 161 distinct positions. The most significant new addition was SYNDAX PHARMACEUTICALS INC, now representing 1.04% of the total fund value. They heavily accumulated shares in BROOKDALE SR LIVING INC, increasing the position by 923.0%. Conversely, DEERFIELD MANAGEMENT COMPANY, L.P. completely exited their position in BROOKDALE SR LIVING INC.
Position History
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Total Positions
161
Quarter
2026 Q1
Top Holding
NUVL (20.8%)
Top 10 Concentration
50.9%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 161
DEERFIELD MANAGEMENT COMPANY, L.P. Full Holdings List — 2026 Q1
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NUVL
NUVALENT INC
|
Healthcare | 20.85% | 22.16% |
#1
Prev: #1
|
7.0 |
—
|
no change | no change |
P
S
|
17,248,450 | $1,767,103,703 | 2021 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
BROOKDALE SR LI...
|
|
Bond/Debt | 5.96% | 5.46% |
#2
Prev: #2
|
4.9 |
—
|
no change | no change |
P
S
|
306,885,000 | $505,441,129 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
COGT
COGENT BIOSCIEN...
|
Healthcare | 4.11% | 4.10% |
#3
Prev: #3
|
3.6 |
—
|
no change | no change |
P
S
|
9,043,903 | $348,099,826 | 2020 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
PRAX
PRAXIS PRECISIO...
|
Healthcare | 3.66% | 3.40% |
#4
Prev: #4
|
4.0 |
—
|
60,000 | 6.6% |
P
S
|
963,351 | $310,382,059 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
VTRS
VIATRIS INC
|
Healthcare | 3.22% | 3.21% |
#5
1
Prev: #6
|
2.8 |
—
|
no change | no change |
P
S
|
20,206,170 | $272,985,357 | 2020 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
UTHR
UNITED THERAPEU...
|
Healthcare | 3.20% | 2.65% |
#6
2
Prev: #8
|
3.3 |
—
|
31,007 | 7.3% |
P
S
|
457,000 | $270,991,860 | 2007 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
RVMD
REVOLUTION MEDI...
|
Healthcare | 2.64% | 2.94% |
#7
Prev: #7
|
1.1 |
—
|
-597,613 | -20.6% |
P
S
|
2,297,000 | $223,383,250 | 2020 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
MIRUM PHARMACEU...
|
|
Bond/Debt | 2.47% | 2.31% |
#8
2
Prev: #10
|
2.0 |
—
|
no change | no change |
P
S
|
70,000,000 | $209,440,280 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
ARROWHEAD PHARM...
|
|
Bond/Debt | 2.44% | — |
#9
Prev: #—
|
4.5 |
—
|
200,000,000 | — |
NEW
|
200,000,000 | $207,181,800 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
CELC
CELCUITY INC
|
Healthcare | 2.31% | 2.18% |
#10
1
Prev: #11
|
1.9 |
—
|
no change | no change |
P
S
|
1,714,000 | $195,635,960 | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CNC
CENTENE CORP DE...
|
Healthcare | 2.29% | 3.39% |
#11
6
Prev: #5
|
1.4 |
—
|
-530,907 | -8.2% |
P
S
|
5,917,091 | $193,725,559 | 2005 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
LRMR
LARIMAR THERAPE...
|
Healthcare | 1.89% | 1.49% |
#12
8
Prev: #20
|
2.8 |
—
|
5,000,000 | 16.3% |
P
S
|
35,606,974 | $160,231,383 | 2020 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BKD
BROOKDALE SR LI...
|
Healthcare | 1.88% | 1.60% |
#13
4
Prev: #17
|
1.8 |
—
|
no change | no change |
P
S
|
11,637,032 | $159,194,598 | 2007 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
VERA
VERA THERAPEUTI...
|
Healthcare | 1.77% | 2.63% |
#14
5
Prev: #9
|
1.2 |
—
|
-337,595 | -8.3% |
P
S
|
3,722,100 | $149,740,083 | 2023 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
IONS
IONIS PHARMACEU...
|
Healthcare | 1.75% | 2.00% |
#15
2
Prev: #13
|
1.7 |
—
|
no change | no change |
P
S
|
1,979,669 | $148,653,345 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BCRX
BIOCRYST PHARMA...
|
Healthcare | 1.69% | 1.43% |
#16
7
Prev: #23
|
1.2 |
—
|
697,000 | 4.9% |
P
S
|
15,038,000 | $143,161,760 | 2005 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
INSP
INSPIRE MED SYS...
|
Healthcare | 1.64% | 1.77% |
#17
2
Prev: #15
|
3.7 |
—
|
1,197,366 | 79.5% |
P
S
|
2,703,238 | $139,433,016 | 2018 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
LEGN
LEGEND BIOTECH ...
|
Healthcare | 1.64% | 1.65% |
#18
2
Prev: #16
|
3.2 |
—
|
1,755,638 | 29.6% |
P
S
|
7,687,638 | $139,069,371 | 2024 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
AHCO
ADAPTHEALTH COR...
|
Healthcare | 1.61% | 1.46% |
#19
3
Prev: #22
|
1.6 |
—
|
no change | no change |
P
S
|
11,477,730 | $136,584,987 | 2019 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NAMS
NEWAMSTERDAM PH...
|
Healthcare | 1.61% | 1.87% |
#20
6
Prev: #14
|
1.1 |
—
|
100,000 | 2.4% |
P
S
|
4,264,789 | $136,515,896 | 2022 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ACHC
ACADIA HEALTHCA...
|
Healthcare | 1.25% | 0.82% |
#21
12
Prev: #33
|
1.5 |
—
|
no change | no change |
P
S
|
4,520,000 | $105,722,800 | 2017 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ARWR
ARROWHEAD PHARM...
|
Healthcare | 1.16% | 1.55% |
#22
3
Prev: #19
|
1.0 |
—
|
-259,649 | -14.2% |
P
S
|
1,573,297 | $98,645,722 | 2013 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CPRX
CATALYST PHARMA...
|
Healthcare | 1.15% | 1.46% |
#23
2
Prev: #21
|
1.0 |
—
|
-967,561 | -19.7% |
P
S
|
3,943,600 | $97,643,536 | 2022 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
INDV
INDIVIOR PHARMA...
|
Healthcare | 1.11% | 1.55% |
#24
6
Prev: #18
|
0.9 |
—
|
-295,273 | -8.7% |
P
S
|
3,097,790 | $94,420,639 | 2024 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
XENE
XENON PHARMACEU...
|
Healthcare | 1.11% | 0.31% |
#25
32
Prev: #57
|
3.4 |
—
|
1,073,676 | 198.1% |
P
S
|
1,615,696 | $93,952,722 | 2025 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
IONIS PHARMACEU...
|
|
Bond/Debt | 1.07% | 1.22% |
#26
2
Prev: #24
|
1.4 |
—
|
no change | no change |
P
S
|
60,000,000 | $90,613,860 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
PHVS
PHARVARIS N V
|
Healthcare | 1.04% | 1.11% |
#27
Prev: #27
|
1.4 |
—
|
no change | no change |
P
S
|
3,126,042 | $88,310,687 | 2021 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SNDX
SYNDAX PHARMACE...
|
Healthcare | 1.04% | — |
#28
Prev: #—
|
3.9 |
—
|
3,779,900 | — |
NEW
|
3,779,900 | $88,298,464 | 2017 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
TNGX
TANGO THERAPEUT...
|
Healthcare | 1.02% | 0.33% |
#29
27
Prev: #56
|
2.9 |
—
|
1,239,867 | 42.7% |
P
S
|
4,146,813 | $86,751,328 | 2023 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
ALIGNMENT HEALT...
|
|
Bond/Debt | 1.01% | 1.18% |
#30
5
Prev: #25
|
1.4 |
—
|
no change | no change |
P
S
|
61,000,000 | $85,858,720 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
DNTH
DIANTHUS THERAP...
|
Healthcare | 1.01% | — |
#31
Prev: #—
|
3.9 |
—
|
1,019,813 | — |
NEW
|
1,019,813 | $85,582,707 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
PFE
PFIZER INC
|
Healthcare | 1.01% | — |
#32
Prev: #—
|
3.9 |
—
|
3,040,000 | — |
NEW
|
3,040,000 | $85,363,200 | 2000 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NBIX
NEUROCRINE BIOS...
|
Healthcare | 0.95% | 2.15% |
#33
21
Prev: #12
|
0.4 |
—
|
-574,345 | -48.5% |
P
S
|
610,000 | $80,361,400 | 2000 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
DAWN
DAY ONE BIOPHAR...
|
Healthcare | 0.94% | 0.44% |
#34
12
Prev: #46
|
1.4 |
—
|
no change | no change |
P
S
|
3,723,131 | $79,823,929 | 2021 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SVRA
SAVARA INC
|
Healthcare | 0.87% | 1.04% |
#35
7
Prev: #28
|
1.3 |
—
|
no change | no change |
P
S
|
13,569,000 | $74,086,740 | 2018 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
ZENAS BIOPHARMA...
|
|
Bond/Debt | 0.79% | — |
#36
Prev: #—
|
3.8 |
—
|
65,000,000 | — |
NEW
|
65,000,000 | $67,252,900 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
EHAB
ENHABIT INC
|
Healthcare | 0.79% | 0.56% |
#37
2
Prev: #39
|
1.3 |
—
|
no change | no change |
P
S
|
4,747,746 | $66,895,741 | 2022 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
NEOGENOMICS INC
|
|
Bond/Debt | 0.79% | 0.83% |
#38
6
Prev: #32
|
1.3 |
—
|
no change | no change |
P
S
|
72,689,000 | $66,653,778 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
GMAB
GENMAB A/S
|
Healthcare | 0.78% | — |
#39
Prev: #—
|
3.8 |
—
|
2,462,000 | — |
NEW
|
2,462,000 | $66,055,460 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BIO
BIO RAD LABS IN...
|
Healthcare | 0.74% | 0.87% |
#40
9
Prev: #31
|
1.3 |
—
|
no change | no change |
P
S
|
226,070 | $63,017,013 | 2003 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
LNTH
LANTHEUS HLDGS ...
|
Healthcare | 0.74% | 0.70% |
#41
5
Prev: #36
|
1.3 |
—
|
no change | no change |
P
S
|
827,999 | $62,803,724 | 2024 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SPRY
ARS PHARMACEUTI...
|
Healthcare | 0.71% | 1.12% |
#42
16
Prev: #26
|
1.3 |
—
|
no change | no change |
P
S
|
7,503,812 | $60,255,610 | 2022 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
STOK
STOKE THERAPEUT...
|
Healthcare | 0.70% | 0.74% |
#43
8
Prev: #35
|
1.3 |
—
|
no change | no change |
P
S
|
1,823,500 | $59,373,160 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NVST
ENVISTA HOLDING...
|
Healthcare | 0.66% | 0.63% |
#44
6
Prev: #38
|
0.8 |
—
|
-70,398 | -3.1% |
P
S
|
2,210,100 | $56,070,237 | 2024 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
IDYA
IDEAYA BIOSCIEN...
|
Healthcare | 0.60% | 0.95% |
#45
16
Prev: #29
|
0.2 |
—
|
-623,035 | -28.9% |
P
S
|
1,530,008 | $50,979,867 | 2019 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BLTE
BELITE BIO INC
|
Healthcare | 0.57% | 0.48% |
#46
1
Prev: #45
|
2.7 |
—
|
70,200 | 30.0% |
P
S
|
304,013 | $48,471,833 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BMRN
BIOMARIN PHARMA...
|
Healthcare | 0.57% | — |
#47
Prev: #—
|
3.7 |
—
|
851,556 | — |
NEW
|
851,556 | $48,104,398 | 2001 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
KYMR
KYMERA THERAPEU...
|
Healthcare | 0.55% | 0.56% |
#48
8
Prev: #40
|
1.2 |
—
|
no change | no change |
P
S
|
561,170 | $46,739,849 | 2024 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CERT
CERTARA INC
|
Healthcare | 0.53% | 0.88% |
#49
19
Prev: #30
|
1.2 |
—
|
no change | no change |
P
S
|
7,808,605 | $44,509,049 | 2020 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
BBOT
BRIDGEBIO ONCOL...
|
Healthcare | 0.52% | 0.78% |
#50
16
Prev: #34
|
1.2 |
—
|
no change | no change |
P
S
|
4,885,446 | $43,724,742 | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 |
Showing 1-50 of 161 holdings