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Siren, L.L.C.

Q2 2026 Holdings

Filed 2026-08-13 | 119 holdings | $4.9B | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Scholar Rock Holding Corp(SRRK)COM80706P103$526.6M9,575,01310.7%
Kymera Therapeutics Inc(KYMR)COM501575104$336.7M2,935,8306.8%
Erasca Inc(ERAS)COM29479A108$208.8M11,397,7814.2%
Veradermics Inc(MANE)COMMON STOCK922967104$203.5M1,655,3744.1%
Tango Therapeutics Inc(TNGX)COM87583X109$193.2M6,179,3643.9%
Revolution Medicines Inc(RVMD)COM76155X100$168.6M900,0003.4%
Bicara Therapeutics Inc(BCAX)COM055477103$166.4M5,602,9703.4%
Arrowhead Pharmaceuticals Inc(ARWR)COM04280A100$139.8M1,715,4762.8%
BeOne Medicines AG(ONC)SPONSORED ADS07725L102$132.5M465,0002.7%
Edgewise Therapeutics Inc(EWTX)COM28036F105$129.4M3,184,6292.6%
Rhythm Pharmaceuticals Inc(RYTM)COM76243J105$126.2M1,136,2752.6%
Lexicon Pharmaceuticals Inc(LXRX)COM NEW528872302$106.3M44,303,5182.2%
Enliven Therapeutics Inc(ELVN)COM29337E102$90.1M1,774,4111.8%
Spyre Therapeutics Inc(SYRE)COM NEW00773J202$86.0M968,5981.7%
Parabilis Medicines Inc(PBLS)COM698955101$81.9M2,992,2591.7%
Xenon Pharmaceuticals Inc(XENE)COM98420N105$79.6M1,318,5641.6%
Solid Biosciences Inc(SLDB)COM NEW83422E204$76.8M7,690,4051.6%
Abivax SA(ABVX)SPONSORED ADS00370M103$76.8M576,0001.6%
Hemab Therapeutics Holdings Inc(COAG)COM SHS423494103$76.6M2,086,8341.6%
Arcus Biosciences Inc(RCUS)COM03969F109$74.6M2,420,4301.5%
Cogent Biosciences Inc(COGT)COM19240Q201$72.0M1,859,2791.5%
Relay Therapeutics Inc(RLAY)COM75943R102$68.3M3,650,0001.4%
Taysha Gene Therapies Inc(TSHA)COM SHS877619106$67.1M9,846,5791.4%
Definium Therapeutics Inc(DFTX)COM SHS24477V105$66.8M1,419,4931.4%
Stoke Therapeutics Inc(STOK)COM86150R107$65.3M1,995,3471.3%
Disc Medicine Inc(IRON)COM254604101$65.0M888,4011.3%
Cytokinetics Inc(CYTK)COM NEW23282W605$64.7M758,9521.3%
Septerna Inc(SEPN)COM81734D104$63.6M1,900,0001.3%
Olema Pharmaceuticals Inc(OLMA)COM68062P106$60.8M4,856,9491.2%
Crinetics Pharmaceuticals Inc(CRNX)COM22663K107$53.2M1,420,7881.1%
Kailera Therapeutics Inc(KLRA)COMMON STOCK482931102$48.8M2,214,2861.0%
Dyne Therapeutics, Inc(DYN)COM26818M108$47.3M2,129,1251.0%
Structure Therapeutics Inc(GPCR)SPONSORED ADS86366E106$46.9M872,9670.9%
Taboola.com Ltd(TBLA)ORD SHSM8744T106$42.1M8,423,4100.9%
Palvella Therapeutics Inc(PVLA)COM697947109$39.3M257,4850.8%
Silence Therapeutics PLC(SLN)ADS82686Q101$36.4M3,311,4380.7%
Denali Therapeutics Inc(DNLI)COM24823R105$35.9M1,396,5130.7%
Remitly Global Inc(RELY)COM75960P104$34.6M1,543,2710.7%
Cullinan Therapeutics Inc(CGEM)COM230031106$34.5M1,893,4100.7%
Capital One Finl Corp(COF)COM14040H105$34.4M171,6150.7%
Trevi Therapeutics Inc(TRVI)COM89532M101$33.3M1,786,8670.7%
Oric Pharmaceuticals Inc(ORIC)COM68622P109$32.5M2,998,1920.7%
Alphabet Inc(GOOGL)CAP STK CL A02079K305$32.2M90,0000.7%
Dbv Technologies SA(DBVT)SPONSORED ADS23306J309$30.5M1,857,3620.6%
Absci Corp(ABSI)COM00091E109$28.7M2,474,7640.6%
Sionna Therapeutics Inc(SION)COM829401108$26.9M610,5150.5%
Rapport Therapeutics Inc(RAPP)COM75383L102$26.7M641,4690.5%
Amylyx Pharmaceuticals Inc(AMLX)COM03237H101$26.6M1,480,5860.5%
Annexon Inc(ANNX)COM03589W102$25.5M4,458,6460.5%
Monopar Therapeutics Inc(MNPR)COM NEW61023L207$25.0M270,1180.5%
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