Avidity Partners Management LP

All Holdings — 2025 Q4

Portfolio Concentration Analytics: 7.6
Risk-based ENB:
Total Positions
54
Quarter
2025 Q4
Top Holding
DNTH (25.0%)
Top 10 Concentration
71.9%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
1-25 of 54
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
DNTH
DIANTHUS THERAP...
Healthcare 25.01% 28.70% #1
Prev: #1
10.0 -1,100,000 -34.3%
P
S
2,104,184 $86,713,423 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
CGON
CG ONCOLOGY INC
Healthcare 17.64% 14.68% #2
Prev: #2
7.1 -128,200 -8.0%
P
S
1,472,699 $61,146,462 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
JBIO
JADE BIOSCIENCE...
Healthcare 6.23% 2.21% #3 8
Prev: #11
4.6 273,522 24.3%
P
S
1,400,708 $21,612,924 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
ORKA
ORUKA THERAPEUT...
Healthcare 5.77% 2.89% #4 1
Prev: #5
2.3 no change no change
P
S
660,424 $20,017,451 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
TEVA
TEVA PHARMACEUT...
Healthcare 3.76% 2.34% #5 4
Prev: #9
1.6 -92,700 -18.2%
P
S
417,300 $13,023,933 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
BSX
BOSTON SCIENTIF...
Healthcare 3.15% 3.65% #6 2
Prev: #4
1.4 -49,800 -30.3%
P
S
114,500 $10,917,575 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
MDT
MEDTRONIC PLC
Healthcare 2.98% 4.13% #7 4
Prev: #3
1.3 -83,000 -43.5%
P
S
107,600 $10,336,056 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
CATX
PERSPECTIVE THE...
Healthcare 2.55% 2.34% #8 2
Prev: #10
3.0 216,700 7.2%
P
S
3,210,733 $8,829,516 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
ALNY
ALNYLAM PHARMAC...
Healthcare 2.41% #9
Prev: #—
3.0 21,000 no change
NEW
21,000 $8,350,650 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
RGEN
REPLIGEN CORP
Healthcare 2.38% 0.71% #10 21
Prev: #31
3.3 27,000 115.9%
P
S
50,300 $8,242,158 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
CNTX
CONTEXT THERAPE...
Healthcare 2.33% 1.98% #11 3
Prev: #14
1.0 -3,477,000 -38.7%
P
S
5,504,855 $8,092,137 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
MCK
MCKESSON CORP
Healthcare 2.25% 1.02% #12 12
Prev: #24
3.1 3,720 64.1%
P
S
9,520 $7,809,161 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
ICLR
ICON PLC
Healthcare 1.74% #13
Prev: #—
2.7 33,100 no change
NEW
33,100 $6,031,482 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
A
AGILENT TECHNOL...
Healthcare 1.63% #14
Prev: #—
2.7 41,500 no change
NEW
41,500 $5,646,905 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
PFE
PFIZER INC
Healthcare 1.46% 2.12% #15 3
Prev: #12
0.7 -162,800 -44.4%
P
S
203,600 $5,069,640 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
CNC
CENTENE CORP DE...
Healthcare 1.42% #16
Prev: #—
2.6 119,400 no change
NEW
119,400 $4,913,310 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
KVUE
KENVUE INC
Consumer Defensive 1.16% 0.98% #17 9
Prev: #26
0.5 -32,400 -12.2%
P
S
232,800 $4,015,800 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
DHR
DANAHER CORPORA...
Healthcare 1.12% 2.47% #18 10
Prev: #8
0.7 -37,700 -68.9%
P
S
17,000 $3,891,640 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
TMO
THERMO FISHER S...
Healthcare 1.12% 2.09% #19 6
Prev: #13
0.6 -12,200 -64.6%
P
S
6,700 $3,882,315 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
NVO
NOVO-NORDISK A ...
Healthcare 0.99% #20
Prev: #—
2.4 67,300 no change
NEW
67,300 $3,424,224 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
PHAT
PHATHOM PHARMAC...
Healthcare 0.99% 0.82% #21 9
Prev: #30
0.5 -99,924 -32.7%
P
S
206,076 $3,418,801 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
EHC
ENCOMPASS HEALT...
Healthcare 0.97% 1.21% #22 2
Prev: #20
0.5 -10,300 -24.6%
P
S
31,600 $3,354,024 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
CI
THE CIGNA GROUP
Healthcare 0.92% 1.09% #23 1
Prev: #22
0.5 -5,000 -30.1%
P
S
11,600 $3,192,668 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
COR
CENCORA INC
Healthcare 0.92% 1.35% #24 5
Prev: #19
0.5 -9,600 -50.5%
P
S
9,400 $3,174,850 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
INSM
INSMED INC
Healthcare 0.89% 0.38% #25 16
Prev: #41
2.5 6,100 52.6%
P
S
17,700 $3,080,508 2019 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
BMY
BRISTOL-MYERS S...
Healthcare 0.00% 2.64%
Sold All 😨
(Was: #6)
0.3 -257,600 -100.0%
CLOSED
$— 2024 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
MTSR
METSERA INC
Healthcare 0.00% 1.67%
Sold All 😨
(Was: #16)
0.3 -140,500 -100.0%
CLOSED
$— 2025 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
UNH
UNITEDHEALTH GR...
Healthcare 0.00% 1.40%
Sold All 😨
(Was: #17)
0.3 -17,800 -100.0%
CLOSED
$— 2021 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
ARVN
ARVINAS INC
Healthcare 0.00% 1.35%
Sold All 😨
(Was: #18)
0.3 -698,363 -100.0%
CLOSED
$— 2020 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
JNJ
JOHNSON & JOHNS...
Healthcare 0.00% 1.13%
Sold All 😨
(Was: #21)
0.3 -26,800 -100.0%
CLOSED
$— 2022 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
ABBV
ABBVIE INC
Healthcare 0.00% 1.04%
Sold All 😨
(Was: #23)
0.3 -19,800 -100.0%
CLOSED
$— 2020 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
CARL
CARLSMED INC
Healthcare 0.00% 0.98%
Sold All 😨
(Was: #25)
0.3 -321,912 -100.0%
CLOSED
$— 2025 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
ARQT
ARCUTIS BIOTHER...
Healthcare 0.00% 0.92%
Sold All 😨
(Was: #28)
0.3 -214,400 -100.0%
CLOSED
$— 2022 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
EXAS
EXACT SCIENCES ...
Healthcare 0.00% 0.92%
Sold All 😨
(Was: #29)
0.3 -73,600 -100.0%
CLOSED
$— 2020 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
ASND
ASCENDIS PHARMA...
Healthcare 0.00% 0.66%
Sold All 😨
(Was: #33)
0.3 -14,500 -100.0%
CLOSED
$— 2020 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
BEAM
BEAM THERAPEUTI...
Healthcare 0.00% 0.62%
Sold All 😨
(Was: #35)
0.3 -112,000 -100.0%
CLOSED
$— 2025 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
WVE
WAVE LIFE SCIEN...
Healthcare 0.00% 0.50%
Sold All 😨
(Was: #38)
0.3 -297,500 -100.0%
CLOSED
$— 2024 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
XENE
XENON PHARMACEU...
Healthcare 0.00% 0.49%
Sold All 😨
(Was: #39)
0.3 -53,400 -100.0%
CLOSED
$— 2022 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
AKRO
AKERO THERAPEUT...
Healthcare 0.00% 0.44%
Sold All 😨
(Was: #40)
0.3 -40,500 -100.0%
CLOSED
$— 2022 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
IMRX
IMMUNEERING COR...
Healthcare 0.00% 0.14%
Sold All 😨
(Was: #43)
0.3 -90,900 -100.0%
CLOSED
$— 2025 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
Showing 1-25 of 54 holdings

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