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Cormorant Asset Management, LP

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13F filer, CIK 1583977, BOSTON, MA

Cormorant Asset Management, LP reported $1,820,860,799 across 48 holdings for the quarter ended 2024-12-31, in a 13F-HR filed 2025-02-14. Its ten largest share positions make up 65.19% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001583977-25-000001

Period
2024-12-31
Reported value
$1.82B
Holdings
48
Top 10 weight
65.19%
New
8
Sold out
5

Largest buys vs the previous quarter

SecurityShares changeApprox. value
PRAXadded+823,219$63.4M
JANXadded+1,050,000$56.2M
DRUGnew+1,059,331$38.2M
NAMSadded+780,000$20M
OKURnew+1,837,739$15.8M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
LONGBOARD PHARMACEUTICALS INexited-2,790,462-$93M
PCVXreduced-575,000-$47.1M
URGNreduced-1,250,000-$13.3M
BHVNreduced-346,424-$12.9M
ANABexited-342,465-$11.5M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q4 2024

Share positions as resolved from 13F-HR 0001583977-25-000001, largest first. % of portfolio is the value over $1,820,860,799, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
MLTXMOONLAKE IMMUNOTHERAPEUTICSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 8,494,151 shares; 2024Q4: 8,494,151 shares 8,494,151$460M25.26%0Timeline
PRAXPRAXIS PRECISION MEDICINES IQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 870,000 shares; 2024Q4: 1,693,219 shares 1,693,219$130M7.16%+823,219Timeline
JANXJANUX THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,050,000 shares; 2024Q4: 2,100,000 shares 2,100,000$112M6.17%+1,050,000Timeline
ACLXARCELLX INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,250,000 shares; 2024Q4: 1,300,000 shares 1,300,000$99.7M5.48%+50,000Timeline
EWTXEDGEWISE THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 3,406,534 shares; 2024Q4: 3,406,534 shares 3,406,534$91M5%0Timeline
NAMSNEWAMSTERDAM PHARMA COMPANYQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 2,470,000 shares; 2024Q4: 3,250,000 shares 3,250,000$83.5M4.59%+780,000Timeline
EYPTEYEPOINT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 8,325,000 shares; 2024Q4: 8,325,000 shares 8,325,000$62M3.41%0Timeline
RAPPRAPPORT THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 2,940,921 shares; 2024Q4: 2,940,921 shares 2,940,921$52.2M2.87%0Timeline
CRNXCRINETICS PHARMACEUTICALS INQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,100,000 shares; 2024Q4: 1,000,000 shares 1,000,000$51.1M2.81%-100,000Timeline
INSMINSMED INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 500,000 shares; 2024Q4: 650,000 shares 650,000$44.9M2.46%+150,000Timeline
BBIOBRIDGEBIO PHARMA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,858,351 shares; 2024Q4: 1,600,000 shares 1,600,000$43.9M2.41%-258,351Timeline
CNTACENTESSA PHARMACEUTICALS PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 2,561,600 shares; 2024Q4: 2,561,600 shares 2,561,600$42.9M2.36%0Timeline
DRUGBRIGHT MINDS BIOSCIENCES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 1,059,331 shares 1,059,331$38.2M2.1%newTimeline
PCVXVAXCYTE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,000,000 shares; 2024Q4: 425,000 shares 425,000$34.8M1.91%-575,000Timeline
MERUS N VMERUS N VQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 740,000 shares; 2024Q4: 740,000 shares 740,000$31.1M1.71%0
HELIX ACQUISITION CORP IIHELIX ACQUISITION CORP IIQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 2,909,000 shares; 2024Q4: 2,909,000 shares 2,909,000$30.5M1.68%0
RNAMAVIDITY BIOSCIENCES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,050,000 shares; 2024Q4: 1,050,000 shares 1,050,000$30.5M1.68%0Timeline
PHVSPHARVARIS N VQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,466,460 shares; 2024Q4: 1,466,460 shares 1,466,460$28.1M1.54%0Timeline
CRBPCORBUS PHARMACEUTICALS HLDGSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 2,375,000 shares; 2024Q4: 2,375,000 shares 2,375,000$28M1.54%0Timeline
TARSTARSUS PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 500,000 shares; 2024Q4: 500,000 shares 500,000$27.7M1.52%0Timeline
AXSMAXSOME THERAPEUTICS INC.Quarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 400,000 shares; 2024Q4: 325,000 shares 325,000$27.5M1.51%-75,000Timeline
ARQTARCUTIS BIOTHERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 2,325,000 shares; 2024Q4: 1,825,000 shares 1,825,000$25.4M1.4%-500,000Timeline
RYTMRHYTHM PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 400,000 shares; 2024Q4: 400,000 shares 400,000$22.4M1.23%0Timeline
CGONCG ONCOLOGY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 975,000 shares; 2024Q4: 775,000 shares 775,000$22.2M1.22%-200,000Timeline
CARGO THERAPEUTICS INC COMCARGO THERAPEUTICS INC COMQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,182,563 shares; 2024Q4: 1,182,563 shares 1,182,563$17.1M0.94%0
ALMSALUMIS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 2,147,396 shares; 2024Q4: 2,147,396 shares 2,147,396$16.9M0.93%0Timeline
OKURONKURE THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 1,837,739 shares 1,837,739$15.8M0.87%newTimeline
AVBPARRIVENT BIOPHARMA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 585,462 shares; 2024Q4: 585,462 shares 585,462$15.6M0.86%0Timeline
ABVXABIVAX SAQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 2,130,000 shares; 2024Q4: 2,130,000 shares 2,130,000$15.6M0.86%0Timeline
ENGNENGENE HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,000,000 shares; 2024Q4: 2,323,595 shares 2,323,595$15.5M0.85%+1,323,595Timeline
BIOABIOAGE LABS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,629,529 shares; 2024Q4: 2,629,529 shares 2,629,529$15.2M0.84%+1,000,000Timeline
BMEABIOMEA FUSION INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 3,570,872 shares; 2024Q4: 3,570,872 shares 3,570,872$13.9M0.76%0Timeline
MBXMBX BIOSCIENCES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 700,000 shares; 2024Q4: 700,000 shares 700,000$12.9M0.71%0Timeline
SEPNSEPTERNA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 560,000 shares 560,000$12.8M0.7%newTimeline
IBRXIMMUNITYBIO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 3,000,000 shares 3,000,000$7.68M0.42%newTimeline
ELVNENLIVEN THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 250,000 shares 250,000$5.62M0.31%newTimeline
SPRYARS PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 500,000 shares 500,000$5.28M0.29%newTimeline
VYNEVYNE THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,394,336 shares; 2024Q4: 1,394,336 shares 1,394,336$4.67M0.26%0Timeline
KALAKALA BIO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 603,027 shares 603,027$4.19M0.23%newTimeline
GHRSGH RESEARCH PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 593,043 shares; 2024Q4: 593,043 shares 593,043$4.15M0.23%0Timeline
Y-mAbs Therapeutics IncY-mAbs Therapeutics IncQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,450,000 shares; 2024Q4: 425,000 shares 425,000$3.33M0.18%-1,025,000
URGNUROGEN PHARMA LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,550,000 shares; 2024Q4: 300,000 shares 300,000$3.19M0.18%-1,250,000Timeline
OMEROMEROS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 300,000 shares 300,000$2.96M0.16%newTimeline
STOKSTOKE THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 427,163 shares; 2024Q4: 254,161 shares 254,161$2.8M0.15%-173,002Timeline
BHVNBIOHAVEN LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 401,963 shares; 2024Q4: 55,539 shares 55,539$2.07M0.11%-346,424Timeline
VERVE THERAPEUTICS INCVERVE THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 350,000 shares; 2024Q4: 350,000 shares 350,000$1.97M0.11%0
ARTVARTIVA BIOTHERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 103,633 shares; 2024Q4: 103,633 shares 103,633$1.04M0.06%0Timeline
RAPT THERAPEUTICS INCRAPT THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 496,750 shares; 2024Q4: 200,000 shares 200,000$316K0.02%-296,750

Sold out in Q4 2024

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
LONGBOARD PHARMACEUTICALS INLONGBOARD PHARMACEUTICALS IN2,790,462$93Mshares
ANABANAPTYSBIO INC342,465$11.5Mshares
KRROKORRO BIO INC265,826$8.88Mshares
SLNSILENCE THERAPEUTICS PLC400,000$7.27Mshares
NGNENEUROGENE INC107,344$4.5Mshares

How Q4 2024 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001583977-25-000001 base2025-02-14acceptance time not in the bulk data set