☆Siren, L.L.C.
Quality Q
0.594
AUM ($M)
4,926
Positions
115
Turnover
0.20
Top-10 wt
45%
Herfindahl
0.032
History (qtrs)
6
Excess Return
—
AI Eval Run AI Eval
Holdings · 125 positions · portfolio value $4,926M
| Ticker | Name | Activity | Security Type | Weight | Δ Weight | Value ($M) | Shares | Δ Shares | Qtrs Held | Excess Return |
|---|---|---|---|---|---|---|---|---|---|---|
| ☆SRRK funds › | Scholar Rock Holding Corp | TRIM | — | 10.7% | -4.1% | 526.6 | 9,575,013 | -1,250,000 | 5 | — |
| ☆KYMR funds › | Kymera Therapeutics Inc | TRIM | — | 6.8% | -0.5% | 336.7 | 2,935,830 | -251,000 | 5 | — |
| ☆ERAS funds › | Erasca Inc | ADD | — | 4.2% | -0.8% | 208.8 | 11,397,781 | +153,535 | 5 | — |
| ☆MANE funds › | Veradermics Inc | ADD | — | 4.1% | +1.5% | 203.5 | 1,655,374 | +150,000 | 2 | — |
| ☆TNGX funds › | Tango Therapeutics Inc | ADD | — | 3.9% | +0.6% | 193.2 | 6,179,364 | +522,259 | 5 | — |
| ☆RVMD funds › | Revolution Medicines Inc | TRIM | — | 3.4% | +0.4% | 168.6 | 900,000 | -210,980 | 5 | — |
| ☆BCAX funds › | Bicara Therapeutics Inc | TRIM | — | 3.4% | +0.2% | 166.4 | 5,602,970 | -200,000 | 5 | — |
| ☆ARWR funds › | Arrowhead Pharmaceuticals Inc | ADD | — | 2.8% | +0.0% | 139.8 | 1,715,476 | +100,000 | 5 | — |
| ☆ONC funds › | BeOne Medicines AG | HOLD | — | 2.7% | -1.1% | 132.5 | 465,000 | +0 | 5 | — |
| ☆EWTX funds › | Edgewise Therapeutics Inc | TRIM | — | 2.6% | -1.2% | 129.4 | 3,184,629 | -1,245,634 | 5 | — |
| ☆RYTM funds › | Rhythm Pharmaceuticals Inc | ADD | — | 2.6% | +0.8% | 126.2 | 1,136,275 | +410,764 | 5 | — |
| ☆LXRX funds › | Lexicon Pharmaceuticals Inc | HOLD | — | 2.2% | +0.2% | 106.3 | 44,303,518 | +0 | 5 | — |
| ☆ELVN funds › | Enliven Therapeutics Inc | ADD | — | 1.8% | +1.0% | 90.1 | 1,774,411 | +1,028,185 | 2 | — |
| ☆SYRE funds › | Spyre Therapeutics Inc | ADD | — | 1.7% | +0.6% | 86.0 | 968,598 | +150,000 | 5 | — |
| ☆PBLS funds › | Parabilis Medicines Inc | NEW | — | 1.7% | +1.7% | 81.9 | 2,992,259 | +2,992,259 | 1 | — |
| ☆XENE funds › | Xenon Pharmaceuticals Inc | HOLD | — | 1.6% | -0.5% | 79.6 | 1,318,564 | +0 | 5 | — |
| ☆SLDB funds › | Solid Biosciences Inc | HOLD | — | 1.6% | +0.0% | 76.8 | 7,690,405 | +0 | 5 | — |
| ☆ABVX funds › | Abivax SA | NEW | — | 1.6% | +1.6% | 76.8 | 576,000 | +576,000 | 1 | — |
| ☆COAG funds › | Hemab Therapeutics Holdings Inc | NEW | — | 1.6% | +1.6% | 76.6 | 2,086,834 | +2,086,834 | 1 | — |
| ☆RCUS funds › | Arcus Biosciences Inc | TRIM | — | 1.5% | -0.3% | 74.6 | 2,420,430 | -586,647 | 5 | — |
| ☆COGT funds › | Cogent Biosciences Inc | ADD | — | 1.5% | -0.4% | 72.0 | 1,859,279 | +150,000 | 5 | — |
| ☆RLAY funds › | Relay Therapeutics Inc | NEW | — | 1.4% | +1.4% | 68.3 | 3,650,000 | +3,650,000 | 1 | — |
| ☆TSHA funds › | Taysha Gene Therapies Inc | ADD | — | 1.4% | +0.3% | 67.1 | 9,846,579 | +1,016,666 | 5 | — |
| ☆DFTX funds › | Definium Therapeutics Inc | ADD | — | 1.4% | +0.9% | 66.8 | 1,419,493 | +500,000 | 2 | — |
| ☆STOK funds › | Stoke Therapeutics Inc | HOLD | — | 1.3% | -0.5% | 65.3 | 1,995,347 | +0 | 5 | — |
| ☆IRON funds › | Disc Medicine Inc | TRIM | — | 1.3% | -0.4% | 65.0 | 888,401 | -100,000 | 5 | — |
| ☆CYTK funds › | Cytokinetics Inc | ADD | — | 1.3% | +0.2% | 64.7 | 758,952 | +145,000 | 2 | — |
| ☆SEPN funds › | Septerna Inc | TRIM | — | 1.3% | -0.0% | 63.6 | 1,900,000 | -100,000 | 5 | — |
| ☆OLMA funds › | Olema Pharmaceuticals Inc | ADD | — | 1.2% | -0.7% | 60.8 | 4,856,949 | +100,000 | 3 | — |
| ☆CRNX funds › | Crinetics Pharmaceuticals Inc | TRIM | — | 1.1% | -0.8% | 53.2 | 1,420,788 | -482,848 | 5 | — |
| ☆KLRA funds › | Kailera Therapeutics Inc | NEW | — | 1.0% | +1.0% | 48.8 | 2,214,286 | +2,214,286 | 1 | — |
| ☆DYN funds › | Dyne Therapeutics, Inc | TRIM | — | 1.0% | -0.2% | 47.3 | 2,129,125 | -100,000 | 5 | — |
| ☆GPCR funds › | Structure Therapeutics Inc | TRIM | — | 1.0% | -0.8% | 46.9 | 872,967 | -455,731 | 4 | — |
| ☆TBLA funds › | Taboola.com Ltd | TRIM | — | 0.9% | -0.0% | 42.1 | 8,423,410 | -1,546,085 | 5 | — |
| ☆PVLA funds › | Palvella Therapeutics Inc | HOLD | — | 0.8% | -0.1% | 39.3 | 257,485 | +0 | 3 | — |
| ☆SLN funds › | Silence Therapeutics PLC | ADD | — | 0.7% | +0.3% | 36.4 | 3,311,438 | +400,000 | 5 | — |
| ☆DNLI funds › | Denali Therapeutics Inc | HOLD | — | 0.7% | -0.0% | 35.9 | 1,396,513 | +0 | 5 | — |
| ☆RELY funds › | Remitly Global Inc | HOLD | — | 0.7% | +0.0% | 34.6 | 1,543,271 | +0 | 5 | — |
| ☆CGEM funds › | Cullinan Therapeutics Inc | ADD | — | 0.7% | +0.2% | 34.5 | 1,893,410 | +700,000 | 5 | — |
| ☆COF funds › | Capital One Finl Corp | NEW | — | 0.7% | +0.7% | 34.4 | 171,615 | +171,615 | 1 | — |
| ☆TRVI funds › | Trevi Therapeutics Inc | HOLD | — | 0.7% | +0.1% | 33.3 | 1,786,867 | +0 | 5 | — |
| ☆ORIC funds › | Oric Pharmaceuticals Inc | HOLD | — | 0.7% | -0.4% | 32.5 | 2,998,192 | +0 | 5 | — |
| ☆GOOGL funds › | Alphabet Inc | ADD | — | 0.7% | +0.1% | 32.2 | 90,000 | +24,297 | 5 | — |
| ☆DBVT funds › | Dbv Technologies SA | HOLD | — | 0.6% | -0.5% | 30.5 | 1,857,362 | +0 | 3 | — |
| ☆ABSI funds › | Absci Corp | ADD | Common Stock | 0.6% | +0.4% | 28.7 | 2,474,764 | +674,764 | 2 | — |
| ☆SION funds › | Sionna Therapeutics Inc | ADD | — | 0.5% | +0.2% | 26.9 | 610,515 | +310,515 | 5 | — |
| ☆RAPP funds › | Rapport Therapeutics Inc | HOLD | — | 0.5% | -0.0% | 26.7 | 641,469 | +0 | 5 | — |
| ☆AMLX funds › | Amylyx Pharmaceuticals Inc | ADD | — | 0.5% | +0.1% | 26.6 | 1,480,586 | +250,586 | 2 | — |
| ☆ANNX funds › | Annexon Inc | ADD | — | 0.5% | -0.1% | 25.5 | 4,458,646 | +500,000 | 2 | — |
| ☆MNPR funds › | Monopar Therapeutics Inc | HOLD | — | 0.5% | +0.1% | 25.0 | 270,118 | +0 | 3 | — |
| ☆ORKA funds › | Oruka Therapeutics Inc | NEW | — | 0.5% | +0.5% | 23.8 | 250,000 | +250,000 | 1 | — |
| ☆SPTX funds › | Seaport Therapeutics Inc | NEW | — | 0.5% | +0.5% | 23.8 | 1,095,316 | +1,095,316 | 1 | — |
| ☆DMRA funds › | Damora Therapeutics Inc | HOLD | — | 0.5% | -0.2% | 23.4 | 900,000 | +0 | 2 | — |
| ☆TYRA funds › | Tyra Biosciences Inc | NEW | — | 0.5% | +0.5% | 23.2 | 725,000 | +725,000 | 1 | — |
| ☆ZURA funds › | Zura Bio Ltd | HOLD | — | 0.4% | -0.2% | 22.0 | 3,734,866 | +0 | 3 | — |
| ☆TSM funds › | Taiwan Semiconductor Manufacturing Co Ltd | ADD | — | 0.4% | +0.0% | 21.3 | 44,700 | +2,500 | 5 | — |
| ☆NVDA funds › | NVIDIA Corp | ADD | — | 0.4% | -0.0% | 19.0 | 95,000 | +5,915 | 5 | — |
| ☆RZLT funds › | Rezolute Inc | HOLD | — | 0.4% | +0.1% | 17.3 | 3,328,287 | +0 | 2 | — |
| ☆MPLT funds › | MapLight Therapeutics Inc | HOLD | — | 0.3% | +0.1% | 16.1 | 450,000 | +0 | 3 | — |
| ☆NMRA funds › | Neumora Therapeutics Inc | HOLD | — | 0.3% | -0.2% | 14.4 | 8,497,822 | +0 | 5 | — |
| ☆NBIS funds › | Nebius Group NV | TRIM | — | 0.3% | -0.0% | 14.4 | 52,000 | -61,614 | 5 | — |
| ☆MSFT funds › | Microsoft Corp | TRIM | — | 0.3% | -0.1% | 14.0 | 37,500 | -3,880 | 5 | — |
| ☆CTMX funds › | CytomX Therapeutics Inc | HOLD | — | 0.3% | -0.2% | 13.0 | 3,457,711 | +0 | 2 | — |
| ☆GENB funds › | Generate Biomedicines Inc | HOLD | — | 0.3% | -0.0% | 12.4 | 736,104 | +0 | 2 | — |
| ☆IKT funds › | Inhibikase Therapeutics Inc | HOLD | — | 0.2% | -0.0% | 11.9 | 5,850,000 | +0 | 3 | — |
| ☆ADAG funds › | Adagene Inc | NEW | — | 0.2% | +0.2% | 11.2 | 2,666,666 | +2,666,666 | 1 | — |
| ☆ENGN funds › | enGene Therapeutics Inc | NEW | — | 0.2% | +0.2% | 10.8 | 6,256,662 | +6,256,662 | 1 | — |
| ☆WHWK funds › | Whitehawk Therapeutics Inc | ADD | Common Stock | 0.2% | +0.0% | 10.7 | 2,337,102 | +255,102 | 5 | — |
| ☆DDOG funds › | Datadog Inc | TRIM | — | 0.2% | +0.0% | 10.4 | 40,000 | -14,300 | 5 | — |
| ☆NOW funds › | ServiceNow Inc | ADD | — | 0.2% | -0.1% | 9.9 | 100,000 | +12,910 | 5 | — |
| ☆AVGO funds › | Broadcom Inc | ADD | — | 0.2% | +0.1% | 9.4 | 25,000 | +10,000 | 3 | — |
| ☆IONQ funds › | IONQ Inc | HOLD | — | 0.2% | +0.0% | 9.1 | 170,000 | +0 | 5 | — |
| ☆FROG funds › | Jfrog Ltd | TRIM | — | 0.2% | +0.0% | 8.7 | 95,500 | -33,316 | 5 | — |
| ☆OCS funds › | Oculis Holding AG | NEW | — | 0.2% | +0.2% | 8.7 | 625,000 | +625,000 | 1 | — |
| ☆IREN funds › | IREN Ltd | ADD | — | 0.2% | +0.1% | 8.0 | 175,000 | +131,900 | 4 | — |
| ☆AMZN funds › | Amazon.com Inc | TRIM | — | 0.2% | -0.1% | 7.7 | 32,500 | -14,141 | 5 | — |
| ☆CRWD funds › | CrowdStrike Holdings Inc | TRIM | — | 0.2% | -0.1% | 7.6 | 10,000 | -13,070 | 5 | — |
| ☆DSGN funds › | Design Therapeutics Inc | NEW | — | 0.2% | +0.2% | 7.6 | 523,212 | +523,212 | 1 | — |
| ☆PDD funds › | PDD Holdings Inc | ADD | — | 0.1% | -0.1% | 7.2 | 95,000 | +11,599 | 5 | — |
| ☆MSLE funds › | Satellos Bioscience Inc | HOLD | — | 0.1% | +0.0% | 6.9 | 892,074 | +0 | 2 | — |
| ☆DT funds › | Dynatrace, Inc | ADD | — | 0.1% | -0.0% | 6.8 | 155,000 | +5,000 | 5 | — |
| ☆TENX funds › | Tenax Therapeutics Inc | HOLD | — | 0.1% | -0.1% | 6.2 | 427,141 | +0 | 4 | — |
| ☆VTVT funds › | vTv Therapeutics Inc | HOLD | — | 0.1% | -0.1% | 6.1 | 163,000 | +0 | 4 | — |
| ☆ELOX funds › | Eloxx Pharmaceuticals Inc | NEW | — | 0.1% | +0.1% | 5.6 | 400,000 | +400,000 | 1 | — |
| ☆AGMB funds › | Agomab Therapeutics NV | HOLD | — | 0.1% | -0.0% | 5.3 | 411,250 | +0 | 2 | — |
| ☆BABA funds › | Alibaba Group Holding Ltd | NEW | — | 0.1% | +0.1% | 4.8 | 50,000 | +50,000 | 1 | — |
| ☆KRRO funds › | Korro Bio Inc | HOLD | — | 0.1% | -0.0% | 4.6 | 347,718 | +0 | 5 | — |
| ☆CLBT funds › | Cellebrite DI Ltd | HOLD | — | 0.1% | -0.0% | 4.5 | 311,544 | +0 | 5 | — |
| ☆IVVD funds › | Invivyd Inc | ADD | — | 0.1% | -0.1% | 4.4 | 5,000,000 | +1,000,000 | 3 | — |
| ☆OUST funds › | Ouster Inc | NEW | — | 0.1% | +0.1% | 4.2 | 67,500 | +67,500 | 1 | — |
| ☆PALI funds › | Palisade Bio Inc | NEW | — | 0.1% | +0.1% | 4.2 | 2,000,000 | +2,000,000 | 1 | — |
| ☆AEVA funds › | Aeva Technologies Inc | ADD | — | 0.1% | +0.0% | 4.2 | 145,459 | +35,459 | 2 | — |
| ☆SEER funds › | Seer Inc | HOLD | — | 0.1% | -0.0% | 4.1 | 2,458,673 | +0 | 5 | — |
| ☆NBP funds › | NovaBridge Biosciences | TRIM | — | 0.1% | -0.1% | 3.9 | 2,004,739 | -995,261 | 4 | — |
| ☆GTLB funds › | GitLab Inc | ADD | — | 0.1% | +0.0% | 3.8 | 125,000 | +25,000 | 5 | — |
| ☆ODTX funds › | Odyssey Therapeutics Inc | NEW | — | 0.1% | +0.1% | 3.7 | 200,000 | +200,000 | 1 | — |
| ☆FHTX funds › | Foghorn Therapeutics Inc | HOLD | — | 0.1% | -0.0% | 3.5 | 720,720 | +0 | 5 | — |
| ☆AGEN funds › | Agenus Inc | HOLD | — | 0.1% | -0.0% | 3.3 | 1,064,250 | +0 | 5 | — |
| ☆MNDY funds › | monday.com Ltd | ADD | — | 0.1% | +0.0% | 3.1 | 42,500 | +17,500 | 4 | — |
| ☆ZTS funds › | Zoetis Inc | NEW | — | 0.1% | +0.1% | 2.5 | 35,000 | +35,000 | 1 | — |
| ☆WK funds › | Workiva Inc | TRIM | — | 0.0% | -0.1% | 2.2 | 45,000 | -47,500 | 5 | — |
| ☆NFLX funds › | Netflix Inc | NEW | — | 0.0% | +0.0% | 1.8 | 25,000 | +25,000 | 1 | — |
| ☆KLRS funds › | Kalaris Therapeutics Inc | HOLD | — | 0.0% | -0.0% | 1.8 | 435,798 | +0 | 5 | — |
| ☆QNT funds › | Quantinuum Inc | NEW | — | 0.0% | +0.0% | 1.6 | 20,000 | +20,000 | 1 | — |
| ☆RANI funds › | Rani Therapeutics Holdings Inc | HOLD | — | 0.0% | -0.0% | 1.5 | 2,000,000 | +0 | 3 | — |
| ☆TSLA funds › | Tesla Inc | TRIM | — | 0.0% | -0.2% | 1.5 | 3,500 | -18,000 | 5 | — |
| ☆BEKE funds › | KE Holdings Inc | HOLD | — | 0.0% | -0.0% | 1.5 | 100,000 | +0 | 5 | — |
| ☆ENTX funds › | Entera Bio Ltd | NEW | — | 0.0% | +0.0% | 1.3 | 736,457 | +736,457 | 1 | — |
| ☆MDLN funds › | Medline Inc | HOLD | — | 0.0% | -0.0% | 1.0 | 25,000 | +0 | 3 | — |
| ☆LITE funds › | Lumentum Holdings Inc | NEW | — | 0.0% | +0.0% | 0.9 | 1,055 | +1,055 | 1 | — |
| ☆FIG funds › | Figma Inc | HOLD | — | 0.0% | -0.0% | 0.9 | 50,000 | +0 | 4 | — |
| ☆GOSS funds › | Gossamer Bio Inc | HOLD | — | 0.0% | -0.0% | 0.9 | 5,208,968 | +0 | 5 | — |
| ☆FOXA funds › | Fox Corp | NEW | — | 0.0% | +0.0% | 0.5 | 10,000 | +10,000 | 1 | — |
| ☆T funds › | AT&T Inc | NEW | — | 0.0% | +0.0% | 0.5 | 25,000 | +25,000 | 1 | — |
| ☆NU funds › | Nu Holdings Ltd. | HOLD | — | 0.0% | -0.0% | 0.3 | 25,000 | +0 | 2 | — |
| ☆MU funds › | Micron Technology Inc | EXIT | — | 0.0% | -0.1% | 0.0 | 0 | -6,000 | 0 | — |
| ☆QURE funds › | Uniqure NV | EXIT | — | 0.0% | -0.5% | 0.0 | 0 | -1,000,000 | 0 | — |
| ☆AS funds › | Amer Sports Inc | EXIT | — | 0.0% | -0.0% | 0.0 | 0 | -50,000 | 0 | — |
| ☆FULC funds › | Fulcrum Therapeutics Inc | EXIT | — | 0.0% | -0.5% | 0.0 | 0 | -2,350,000 | 0 | — |
| ☆CUSIP:29286M105 funds › | enGene Holdings Inc | EXIT | — | 0.0% | -1.0% | 0.0 | 0 | -5,253,159 | 0 | — |
| ☆PRMB funds › | Primo Brands Corp | EXIT | — | 0.0% | -0.0% | 0.0 | 0 | -50,000 | 0 | — |
| ☆CUSIP:152309100 funds › | Centessa Pharmaceuticals PLC | EXIT | — | 0.0% | -1.2% | 0.0 | 0 | -1,053,464 | 0 | — |
| ☆FPS funds › | Forgent Power Solutions, Inc | EXIT | — | 0.0% | -0.1% | 0.0 | 0 | -100,000 | 0 | — |
| ☆BCYC funds › | Bicycle Therapeutics PLC | EXIT | — | 0.0% | -0.2% | 0.0 | 0 | -1,560,882 | 0 | — |
| ☆WVE funds › | WAVE Life Sciences Ltd | EXIT | — | 0.0% | -0.5% | 0.0 | 0 | -2,450,000 | 0 | — |
Point-in-time history
| Period | AUM ($M) | Positions | Turnover | Top-10 wt | Herfindahl | Quality Q | Skill | Universe |
|---|---|---|---|---|---|---|---|---|
| 2026Q2 | 4,926 | 115 | 0.20 | 45% | 0.032 | 0.590 | — | in |
| 2026Q1 | 3,607 | 100 | 0.22 | 50% | 0.043 | 0.569 | — | in |
| 2025Q4 | 3,352 | 113 | 0.20 | 46% | 0.041 | 0.509 | — | in |
| 2025Q3 | 2,556 | 115 | 0.18 | 47% | 0.041 | 0.530 | — | in |
| 2025Q2 | 1,932 | 110 | 0.16 | 48% | 0.049 | 0.575 | — | entered |
| 2025Q1 | 1,756 | 116 | 0.00 | 51% | 0.049 | 0.000 | — | out |
Long US-equity 13F disclosures only · up to 45-day reporting lag · sells = reduce/avoid, not short.
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