Cormorant Asset Management, LP

13F Portfolio Filings

Most recent 13F
Q2 2026
Also reports for
Based on a Q2 2026 13F notice
13D/G filings
13D on 2 securities, 13G on 18 securities
Location
Boston, MA
CIK
0001583977
Alternate names
Cormorant Asset Management, LLC
All SEC filings
View on sec.gov
Holdings Value
Quarter Holdings Value ($000) Top Holdings Form Type Date Filed Filing ID
Q2 2026 50 1,951,406 PRAX, BBOT, PBLS, RAPP 13F-HR 8/14/2026 000158397726000007
Q1 2026 47 1,991,046 PRAX, BBOT, EYPT, EWTX 13F-HR 5/15/2026 000158397726000002
Q4 2025 35 2,162,580 PRAX, BBOT, ABVX, QQQ puts 13F-HR 2/17/2026 000158397726000001
Q3 2025 36 1,449,259 BBOT, ABVX, EYPT, RAPP 13F-HR 11/14/2025 000158397725000011
Q2 2025 42 1,342,486 MLTX, EYPT, BBIO, PRAX 13F-HR 8/14/2025 000158397725000007
Q1 2025 44 1,329,946 MLTX, EWTX, BBIO, ACLX 13F-HR 5/15/2025 000158397725000005
Q4 2024 48 1,820,860 MLTX, PRAX, JANX, ACLX 13F-HR 2/14/2025 000158397725000001
Q3 2024 45 1,885,759 MLTX, PCVX, ACLX, LBPH 13F-HR 11/14/2024 000158397724000006
Q2 2024 49 1,731,086 MLTX, CRBP, ACLX, PCVX 13F-HR 8/14/2024 000158397724000003
Q1 2024 57 2,279,648 MLTX, EYPT, ACLX, ALPN 13F-HR 5/15/2024 000158397724000002
Q4 2023 48 2,093,868 MLTX, AMAM, EYPT, BBIO 13F-HR 2/14/2024 000158397724000001
Q3 2023 49 1,714,347 MLTX, BBIO, AMAM, ACLX 13F-HR 11/14/2023 000158397723000005
Q2 2023 64 1,785,149 MLTX, AMAM, APLS, BMEA 13F-HR 8/14/2023 000158397723000003
Q1 2023 72 1,518,444 RXDX, MLTX, BMEA, APLS 13F-HR 5/15/2023 000158397723000002
Q4 2022 73 1,494,448 RXDX, APLS, ACLX, MLTX 13F-HR 2/14/2023 000158397723000001
Q3 2022 73 1,430,700 RXDX, APLS, DSGN, ERAS 13F-HR 11/14/2022 000158397722000007
Q2 2022 80 1,322,563 TPTX, DSGN, ERAS, RXDX 13F-HR 8/15/2022 000158397722000006
Q1 2022 77 1,302,462 TPTX, ERAS, DSGN, RXDX 13F-HR 5/16/2022 000158397722000002
Q4 2021 78 1,681,198 ERAS, TPTX, DSGN, RXDX 13F-HR 2/14/2022 000158397722000001
Q3 2021 88 2,461,043 ERAS, TPTX, AVIR, FMTX 13F-HR 11/15/2021 000158397721000009
Q2 2021 104 2,943,659 TPTX, IWM puts, AVIR, FMTX 13F-HR 8/16/2021 000158397721000008
Q1 2021 120 4,488,679 IWM puts, SPY puts, AVIR, TPTX 13F-HR 5/17/2021 000158397721000005
Q4 2020 105 4,202,158 TPTX, AVIR, QQQ puts, XBI puts 13F-HR 2/16/2021 000158397721000003
Q3 2020 93 2,600,688 TPTX, SPY puts, FMTX, RVMD 13F-HR 11/16/2020 000158397720000005
Q2 2020 81 2,620,817 TPTX, SPY puts, FMTX, CCXI 13F-HR 8/14/2020 000158397720000004
Q1 2020 73 2,152,141 SPY puts, TPTX, PRNB, BBIO 13F-HR 5/15/2020 000158397720000003
Q4 2019 67 2,505,998 TPTX, RETA, MRTX, CCXI 13F-HR 2/14/2020 000158397720000001
Q3 2019 75 1,642,801 TPTX, MRTX, SPY puts, APLS 13F-HR 11/14/2019 000158397719000006
Q2 2019 72 1,740,987 TPTX, MRTX, XBI puts, RETA 13F-HR 8/14/2019 000158397719000004
Q1 2019 64 1,479,543 IFRX, XBI puts, MRTX, ASND 13F-HR 5/15/2019 000158397719000003
Q4 2018 70 1,231,704 TSRO calls, MRTX, ANAB, TSRO 13F-HR 2/14/2019 000158397719000001
Q3 2018 65 1,538,535 ANAB, MRTX, NKTR, NKTR calls 13F-HR 11/14/2018 000158397718000005
Q2 2018 58 1,351,367 APLS, MRTX, NKTR calls, ANAB 13F-HR 8/14/2018 000156761918000936
Q1 2018 52 1,341,490 NKTR, NKTR calls, ANAB, APLS 13F-HR 5/15/2018 000158397718000004
Q4 2017 52 955,302 ANAB, NKTR, APLS, NKTR calls 13F-HR 2/14/2018 000158397718000002
Q3 2017 51 566,356 MYOK, RXDX, OMER, ANAB 13F-HR 11/14/2017 000158397717000005
Q2 2017 71 603,293 PTLA, TBPH, BLUE, QTNT 13F-HR 8/14/2017 000158397717000004
Q1 2017 75 688,685 TBPH, NVRO, PTI, LKFT 13F-HR 5/15/2017 000158397717000003
Q4 2016 77 741,848 PTI, TBPH, NVRO, ALDR 13F-HR 2/14/2017 000158397717000002
Q3 2016 84 906,836 ALDR, NVRO, TBPH, NERV 13F-HR 11/14/2016 000158397716000008
Q2 2016 84 705,177 ALDR, NVRO, HRTX, TSRO 13F-HR 8/15/2016 000114036116076682
Q1 2016 84 663,828 ALDR, HRTX, SAGE, OMER RESTATEMENT 5/17/2016 000114036116066002
Q4 2015 82 835,862 ALKS, DYAX, HRTX, EGRX 13F-HR 2/16/2016 000114036116053224
Q3 2015 87 626,096 HRTX, ALKS, NBIX, DYAX 13F-HR 11/16/2015 000114036115041700
Q2 2015 80 752,151 ALKS, HRTX, RCPT, ALDR 13F-HR 8/14/2015 000114036115032295
Q1 2015 71 647,100 RCPT, ALKS, PBYI, EGRX 13F-HR 5/15/2015 000114036115020350
Q4 2014 70 648,511 RCPT, PBYI, CELG, OVAS 13F-HR 2/17/2015 000114036115007391
Q3 2014 65 486,175 PBYI, RCPT, JAZZ, DYAX 13F-HR 11/14/2014 000114036114041889
Q2 2014 54 377,374 RCPT, OMER, QCOR, KPTI 13F-HR 8/14/2014 000114036114032474
Q1 2014 46 434,881 MDVN, CBST, PBYI, BMRN 13F-HR 5/15/2014 000114036114021247
Q4 2013 37 344,573 MDVN, CBST, KERX, DYAX 13F-HR 2/14/2014 000114036114007278
Additional filings from Cormorant Asset Management, LP that have since been restated

13D and 13G Filings

All 13D and 13G filings

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Each security where the latest filing since 12/18/2024 is a 13D, newest first.

Issuer % of Class Filed
BlossomHill Therapeutics, Inc. 13D
BLSM · 095130100
 11.8% 8/13/2026
Event 8/6/2026
Under 5%, checked the "5 percent or less" box, or amended by a later filing (1)
Biomea Fusion, Inc. 13D/A
BMEA · 09077A106
 1.5% 10/24/2025
Event 10/22/2025

18 other securities where the latest filing is a 13G, the newest filed 8/14/2026. View all