Fund Holdings — EcoR1 Capital, LLC

Total Portfolio Value:
$2.08B
Total Bought:
$210.68M
Total Sold:
$394.77M
Net Transaction:
-$184.09M
Notable People:
Scott Eric Perlen
Securities
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SharesValue
Q2 2025
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Q3 2025
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Change
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Q2 2025
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Q3 2025
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Weight (%)
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Change
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Zymeworks Inc.(ZYME)22,970,38822,970,3880$288.28M$392.33M18.83%+$104.06M
Anaptysbio Inc7,880,0947,880,0940$174.94M$241.29M11.58%+$66.35M
uniQure N.V.SHS(QURE)3,988,9713,988,9710$55.61M$232.84M11.17%+$177.23M
Jazz Pharmaceuticals plcSHS USD(JAZZ)1,706,4691,706,4690$181.09M$224.91M10.79%+$43.82M
Crinetics Pharmaceuticals In4,288,1204,288,1200$123.33M$178.60M8.57%+$55.27M
CRISPR Therapeutics AGNAMEN AKT(CRSP)1,389,2761,389,2760$67.57M$90.04M4.32%+$22.46M
Tango Therapeutics, Inc.(TNGX)10,630,73610,630,7360$54.43M$89.30M4.29%+$34.87M
ORIC Pharmaceuticals, Inc.(ORIC)1,618,0686,728,116+5,110,048$16.42M$80.74M3.87%+$64.31M
Apellis Pharmaceuticals Inc
COM
11,895,8083,447,156-8,448,652$205.92M$78.01M3.74%-$127.91M
Xencor, Inc.(XNCR)6,144,7676,144,7670$48.30M$72.08M3.46%+$23.78M
Lakefront Biotherapeutics NVADR(LKFT)1,036,9451,667,119+630,174$29.02M$57.75M2.77%+$28.72M
Immunome, Inc.(IMNM)4,079,4154,079,4150$37.94M$47.77M2.29%+$9.83M
Eton Pharmaceuticals, Inc.(ETON)2,030,5442,030,5440$28.94M$44.12M2.12%+$15.19M
MBX Biosciences, Inc.(MBX)1,149,7942,123,604+973,810$13.12M$37.16M1.78%+$24.04M
Madrigal Pharmaceuticals, Inc.(MDGL)75,00075,0000$22.70M$34.40M1.65%+$11.70M
Avidity Biosciences Inc500,000765,000+265,000$14.20M$33.33M1.60%+$19.13M
BridgeBio Oncology Therapeutics, Inc.COM NEW ADDED(BBOT)02,823,126+2,823,126$0$32.69M1.57%+$32.69M
Neurogene Inc.(NGNE)1,271,3421,271,3420$19.01M$22.03M1.06%+$3.03M
Alkermes plcSHS(ALKS)500,000500,0000$14.30M$15.00M0.72%+$695.0K
Aquestive Therapeutics Inc02,625,000+2,625,000$0$14.67M0.70%+$14.67M
Metsera Inc271,529271,5290$7.72M$14.21M0.68%+$6.48M
Centessa Pharmaceuticals PlcADS0550,000+550,000$0$13.34M0.64%+$13.34M
Prime Medicine, Inc.(PRME)01,543,326+1,543,326$0$8.55M0.41%+$8.55M
Atara Biotherapeutics Inc573,183573,1830$4.42M$8.21M0.39%+$3.79M
Kura Oncology, Inc.(KURA)4,200,000872,500-3,327,500$24.23M$7.72M0.37%-$16.51M
PepGen Inc.(PEPG)0800,000+800,000$0$3.70M0.18%+$3.70M
Nuvation Bio Inc.W EXP 02 10 202(NUVB)963,333963,3330$1.88M$3.56M0.17%+$1.69M
Voyager Therapeutics, Inc.(VYGR)3,917,546670,303-3,247,243$12.18M$3.13M0.15%-$9.05M
COMPASS Pathways plcADS(CMPS)0265,137+265,137$0$1.52M0.07%+$1.52M
Surrozen, Inc.W EXP 08 01 203(SRZN)66,66566,6650$596.0K$859.3K0.04%+$263.3K
Adaptimmune Therapeutics plcADS(ADAPY)27,404,0700-27,404,070$6.57M$0—-$6.57M
Akero Therapeutics Inc440,0000-440,000$23.48M$0—-$23.48M
Day One Biopharmaceuticals I
COM
862,0680-862,068$5.60M$0—-$5.60M
Hillevax Inc2,420,2430-2,420,243$4.82M$0—-$4.82M
Iteos Therapeutics Inc10,688,9780-10,688,978$106.57M$0—-$106.57M
Janux Therapeutics, Inc.(JANX)1,469,8180-1,469,818$33.95M$0—-$33.95M
MacroGenics, Inc.(MGNX)1,602,7170-1,602,717$1.94M$0—-$1.94M
Pacira BioSciences, Inc.(PCRX)457,4710-457,471$10.93M$0—-$10.93M
Replimune Group, Inc.(REPL)850,3410-850,341$7.90M$0—-$7.90M
Tectonic Therapeutic, Inc.(TECX)935,1210-935,121$18.58M$0—-$18.58M
Verona Pharma PlcADS200,0000-200,000$18.92M$0—-$18.92M
Whitehawk Therapeutics, Inc.(WHWK)1,091,4170-1,091,417$2.04M$0—-$2.04M
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EcoR1 Capital, LLC — 13F Holdings — Q3 2025 | TickerTrail