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ACM

ADAR1 Capital Management Portfolio holdings

AUM $1.7B
1-Year Est. Return 340.85%
This Fund
S&P 500
This Quarter Est. Return
+43.32%
1 Year Est. Return
+340.85%
3 Year Est. Return
–
5 Year Est. Return
–
10 Year Est. Return
–
AUM
$1.36B
AUM Growth
+$297M
Cap. Flow
+$58.3M
Cap. Flow %
4.28%
Top 10 Hldgs %
45.16%
Holding
305
New
90
Increased
79
Reduced
51
Closed
35

Top Buys

Rank Stock Value
1
RNAM
Avidity Biosciences
RNAM
+$31.8M
2
CLDX icon
Celldex Therapeutics
CLDX
+$14.2M
3
IVA
Inventiva
IVA
+$12.6M
4
TERN
Terns Pharmaceuticals
TERN
+$12.3M
5
ABUS icon
Arbutus Biopharma
ABUS
+$11.3M

Top Sells

Rank Stock Value
1
KROS icon
Keros Therapeutics
KROS
+$94.2M
2
ETNB
89bio
ETNB
+$31.1M
3
BIOA
BioAge Labs
BIOA
+$15.5M
4
MTSR
Metsera Inc
MTSR
+$7.98M
5
IVVD icon
Invivyd
IVVD
+$7.22M

Sector Composition

Rank Sector Weight
1 Healthcare 88.69%
2 Financials 1.72%
3 Real Estate 0.12%
4 Communication Services 0.07%
5 Consumer Discretionary 0.06%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ATYR
301
CALL
aTyr Pharma
ATYR
$50.1M
– –
-84,800
Closed -$61.2K
ATYR
302
PUT
aTyr Pharma
ATYR
$50.1M
– –
-222,500
Closed -$161K
ALMS
303
Alumis Inc
ALMS
$3.52B
– –
-61,291
Closed -$245K
ASPC
304
A SPAC III Acquisition Corp
ASPC
$24.8M
– –
-215,000
Closed -$2.22M
MTSR
305
DELISTED
Metsera Inc
MTSR
– –
-152,521
Closed -$7.98M
9 10 11 12
13

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GAM
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FACM
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II
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ADAR1 Capital Management's Q4 2025 Portfolio in Review

As of Q4 2025, ADAR1 Capital Management held 305 positions worth $1.36B, up 28% from $1.06B the previous quarter. Its ten largest holdings account for 45% of the portfolio.

ADAR1 Capital Management deployed $58.3M of net new capital in Q4 2025, opening 90 new positions and adding to 79 existing holdings. Its largest new stake was Inventiva: 2,709,846 shares worth $12.6M.

By sector, the portfolio is most concentrated in Healthcare at 89% of assets, up from 83% a quarter earlier, followed by Financials and Real Estate.

On the sell side, the largest reduction was Keros Therapeutics, an estimated $94.2M trimmed.

  • ADAR1 Capital Management's largest Q4 2025 buy was Inventiva: 2,709,846 shares worth $12.6M.
  • ADAR1 Capital Management added most to Avidity Biosciences in Q4 2025, an estimated $31.8M increase.
  • ADAR1 Capital Management's biggest Q4 2025 reduction was Keros Therapeutics, cutting an estimated $94.2M.
  • ADAR1 Capital Management fully exited 89bio in Q4 2025, selling an estimated $31.1M.
  • ADAR1 Capital Management's ten largest holdings make up 45% of its $1.36B portfolio in Q4 2025.
  • ADAR1 Capital Management opened 90 new positions and closed 35 in Q4 2025.
  • ADAR1 Capital Management's portfolio value rose 28% quarter-over-quarter to $1.36B.

Based on ADAR1 Capital Management's 13F filing for Q4 2025, filed 17 Feb 2026.