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Siren, L.L.C.

Q1 2025 Holdings

Filed 2025-05-14 | 117 holdings | $1.8B | 13F-HR/A | View on SEC ↗ · Holdings Table ↗

Amended (2025-05-23) | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Scholar Rock Holding Corp(SRRK)COM80706P103$297.4M9,250,00516.8%
Beigene Ltd(ONC)SPONSORED ADS07725L102$135.7M498,6897.7%
Kymera Therapeutics Inc(KYMR)COM501575104$88.7M3,240,3135.0%
Blueprint Medicines Corp(2L9)COM09627Y109$64.3M726,1673.6%
Crinetics Pharmaceuticals Inc(CRNX)COM22663K107$56.6M1,688,6113.2%
Apellis Pharmaceuticals Inc(APLS)COM03753U106$56.4M2,578,3963.2%
Disc Medicine Inc(IRON)COM254604101$53.2M1,071,8653.0%
Soleno Therapeutics Inc(SLNO)COM834203309$52.0M727,3372.9%
Ascendis Pharma A/S(ASND)SPONSORED ADR04351P101$44.8M287,3662.5%
Merus NVCOMN5749R100$43.9M1,043,4672.5%
Bicara Therapeutics Inc(BCAX)COM055477103$42.6M3,267,0832.4%
Centessa Pharmaceuticals PLC(CNTA)SPONSORED ADS152309100$42.6M2,960,0292.4%
NewAmsterdam Pharma Company NV(NAMS)ORDINARY SHARESN62509109$39.1M1,912,0302.2%
Edgewise Therapeutics Inc(EWTX)COM28036F105$37.3M1,696,4442.1%
Arrowhead Pharmaceuticals Inc(ARWR)COM04280A100$34.0M2,669,8801.9%
Avidity Biosciences Inc(RNA)COM05370A108$32.8M1,110,6101.8%
Wave Life Sciences Ltd(WVE)SHSY95308105$29.9M3,696,3221.7%
Taboola.com Ltd(TBLA)ORD SHSM8744T106$29.4M9,969,4951.7%
Dyne Therapeutics Inc(DYN)COM26818M108$28.4M2,717,9871.6%
Solid Biosciences Inc(SLDB)COM NEW83422E204$27.4M7,415,9051.5%
Xenon Pharmaceuticals Inc(XENE)COM98420N105$24.6M732,7611.4%
Apogee Therapeutics Inc(APGE)COM03770N101$22.2M594,9941.3%
Revolution Medicines Inc(RVMD)COM76155X100$19.9M563,7551.1%
Trevi Therapeutics Inc(TRVI)COM89532M101$18.0M2,863,7931.0%
Vera Therapeutics Inc(VERA)CL A92337R101$17.9M747,2161.0%
Lexicon Pharmaceuticals Inc(LXRX)ACOM NEW528872302$17.9M38,918,9031.0%
Prothena Corporation PLC(PRTA)SHSG72800108$15.9M1,283,5550.9%
Bicycle Therapeutics PLC(BCYC)SPONSORED ADS088786108$15.4M1,812,7520.9%
Stoke Therapeutics Inc(STOK)COM86150R107$14.9M2,247,3470.8%
Rhythm Pharmaceuticals Inc(RYTM)COM76243J105$14.7M277,5330.8%
Summit Therapeutics Inc(SMMT)COM86627T108$13.4M695,0000.8%
Septerna Inc(SEPN)COM81734D104$12.8M2,202,5140.7%
Arcus Biosciences Inc(RCUS)COM03969F109$12.7M1,612,0770.7%
IHS Holding Limited(IHS)ORD SHSG4701H109$12.3M2,357,5200.7%
Erasca Inc(ERAS)COM29479A108$12.0M8,757,2490.7%
Denali Therapeutics Inc(DNLI)COM24823R105$11.2M821,5130.6%
Vaxcyte Inc(PCVX)COM92243G108$11.2M295,5430.6%
Amazon.com Inc(AMZN)COM023135106$10.7M56,5000.6%
Microsoft Corp(MSFT)COM594918104$10.7M28,5000.6%
Remitly Global Inc(RELY)COM75960P104$10.2M490,4490.6%
Taysha Gene Therapies Inc(TSHA)COM SHS877619106$9.1M6,514,7370.5%
Cullinan Therapeutics Inc(CGEM)COM230031106$9.0M1,193,4100.5%
CrowdStrike Holdings Inc(CRWD)CL A22788C105$8.8M25,0000.5%
Silence Therapeutics PLC(SLN)ADS82686Q101$7.9M2,789,8330.4%
Alphabet Inc(GOOGL)CAP STK CL A02079K305$7.8M50,7030.4%
Cartesian Therapeutics Inc(RNAC)COM NEW816212302$7.4M563,2720.4%
Adobe Inc(ADBE)COM00724F101$7.4M19,2980.4%
Korro Bio Inc(KRRO)COM500946108$7.3M418,8330.4%
ServiceNow Inc(NOW)COM81762P102$7.3M9,1260.4%
Seer Inc(SEER)COM CL A81578P106$6.8M4,000,0000.4%
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