Cormorant Asset Management, LP

Q1 2026 13F-HR Detailed Holdings

Location
Boston, MA
Holdings as of
3/31/2026
Date filed
5/15/2026
Form type
13F-HR
Num holdings
47
Total value ($000)
$1,991,046
Net value change ($000)
-171,534 (-7.9%)
New positions
17
Sold out positions
3
Turnover %
23.5%
Sector allocation + QoQ delta (equities-only)

Holdings broken out by other managers reported in the original SEC filing. View aggregated holdings

You are on the SEC detailed breakdown page. Rows are shown as reported in the filing (including other manager, discretion, and voting authority fields), and are not merged like the standard holdings view. Switch to aggregated holdings.

Snapshot: Change Analysis

Compared to Q4 2025
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
ERAS 93,844 NEW
DNTH 79,724 NEW
ALMS 51,519 145.2%
GLTO 39,498 NEW
TNGX 29,811 NEW
MLTX 26,110 45.5%
AGMB 25,862 NEW
BIOA 23,560 87.3%
MAZE 22,388 NEW
EWTX 21,173 26.0%
Top Reduces (Value $000, Stocks/ETFs)
ABVX -97,428 -53.5%
BBOT -63,827 -28.5%
EYPT -44,466 -29.4%
ENGN -36,120 -100.0%
BBIO -28,667 -31.2%
INSM -16,792 -35.1%
GHRS -16,510 -100.0%
OLMA -10,601 -15.4%
JANX -8,970 -100.0%
DRUG -5,371 -6.5%
Instrument mix + QoQ Δ (ex-options)
Derivatives reported exposure ($000): 7,455 (0.4% of total reported value)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type Discretion Other Manager Sole Shared None

Other Managers

Num Name File Number
1 Chen Bihua 028-15950