DOSSIER · 13F-HR · Q1 2026

Cormorant Asset Management, LP

$2.0B in tracked AUM across 47 positions as of Q1 2026.

CA
CIK 0001583977 · last filed Mar 31, 2026
Total AUM
$2.0B
as of Q1 2026
Holdings
47
positions
Whale Score
67
67
tracked
Activity
no data
changes this Q
AI Analysis · Q1 2026

Portfolio Overview

Cormorant Asset Management’s 13F filing for the period ending September 30, 2025, reveals a specialized, high-conviction investment strategy focused exclusively on the healthcare and biotechnology sectors. The firm manages a concentrated portfolio of 28 holdings with a total value of $1.06 billion. This represents a significant decrease of 20.8% from the previous quarter's value of $1.34 billion. This decline in total portfolio value is attributable to a combination of ma...

The portfolio exhibits high concentration risk, characteristic of specialist healthcare funds. The top ten positions account for approximately 76% of the total assets, with the single largest holding, ABIVAX SA (ABVX), comprising 15.57% of the portfolio. This structure suggests a "best ideas" approach where capital is allocated disproportionately to names with the highest perceived risk-reward asymmetry.

Key Holdings

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
PRAX
PRAXIS PRECISION MEDICINES I
$285M886K14.3%
02
BBOT
BRIDGEBIO ONCOLOGY THERAPEUT
$160M17.9M8.0%
03
EYPT
EYEPOINT INC
$107M8.3M5.4%
04
EWTX
EDGEWISE THERAPEUTICS INC
$103M3.3M5.2%
05
ERAS
ERASCA INC
$94M5.8M4.7%
06
RAPP
RAPPORT THERAPEUTICS INC
$93M3.0M4.6%
07
ALMS
ALUMIS INC
$87M3.9M4.4%
08
ABVX
ABIVAX SA
$85M760K4.3%
09
MLTX
MOONLAKE IMMUNOTHERAPEUTICS
$84M4.5M4.2%
10
DNTH
DIANTHUS THERAPEUTICS INC
$80M950K4.0%

Filing history

2026Q1Mar 31
$2.0B 7.9%
47 positionsView →
2025Q4Dec 31
$2.2B 103.4%
35 positionsView →
2025Q3Sep 30
$1.1B 20.8%
28 positionsView →
2025Q2Jun 30
$1.3B 11.9%
42 positionsLocked
2025Q1Mar 31
$1.2B 34.1%
35 positionsLocked
2024Q4Dec 31
$1.8B 3.4%
48 positionsLocked
2024Q3Sep 30
$1.9B 8.9%
45 positionsLocked
2024Q2Jun 30
$1.7B 24.1%
49 positionsLocked
2024Q1Mar 31
$2.3B 8.9%
57 positionsLocked
2023Q4Dec 31
$2.1B 22.1%
48 positionsLocked
2023Q3Sep 30
$1.7B 4.0%
49 positionsLocked
2023Q2Jun 30
$1.8B 17.6%
64 positionsLocked
Showing 12 of 47