Fund HoldingsEcoR1 Capital, LLC

Total Portfolio Value
$1.69B
Total Bought
$288.83M
Total Sold
$285.72M
Net Transaction
+$3.11M
Filing Period:
Securities
SharesValue ($K)
Q1 2025
Q2 2025
Change
Q1 2025
Q2 2025
Weight (%)
Change
ITEOS THERAPEUTICS INC010,688,978+10,688,9780106,5696.31%+106,569
ZYMEWORKS INC(ZYME)17,259,54822,970,388+5,710,840205,561288,27817.06%+82,717
TANGO THERAPEUTICS INC(TNGX)10,630,73610,630,736014,56454,4293.22%+39,865
ANAPTYSBIO INC7,880,0947,880,0940146,491174,93810.36%+28,447
GALAPAGOS NV(LKFT)155,0061,036,945+881,9393,89429,0241.72%+25,130
CRISPR THERAPEUTICS AG(CRSP)1,389,2761,389,276047,27767,5744.00%+20,297
VERONA PHARMA PLC0200,000+200,000018,9161.12%+18,916
ALKERMES PLC(ALKS)0500,000+500,000014,3050.85%+14,305
UNIQURE NV(QURE)3,988,9713,988,971042,28355,6063.29%+13,323
PACIRA BIOSCIENCES INC(PCRX)0457,471+457,471010,9340.65%+10,934
IMMUNOME INC(IMNM)4,079,4154,079,415027,45437,9392.25%+10,484
KURA ONCOLOGY INC(KURA)2,640,2984,200,000+1,559,70217,42624,2341.43%+6,808
ADAPTIMMUNE THERAPEUTICS PLC027,404,070+27,404,07006,5690.39%+6,569
METSERA INC50,000271,529+221,5291,3617,7250.46%+6,364
AKERO THERAPEUTICS INC440,000440,000017,81123,4781.39%+5,667
HILLEVAX INC02,420,243+2,420,24304,8160.29%+4,816
NEUROGENE INC1,271,3421,271,342014,88719,0071.13%+4,119
MBX BIOSCIENCES INC(MBX)1,259,2731,149,794-109,4799,29313,1190.78%+3,826
ETON PHARMACEUTICALS INC(ETON)1,939,2882,030,544+91,25625,17228,9351.71%+3,763
TECTONIC THERAPEUTIC INC935,121935,121016,56118,5811.10%+2,020
MACROGENICS INC01,602,717+1,602,71701,9390.11%+1,939
ATARA BIOTHERAPEUTICS INC573,183573,18303,4054,4250.26%+1,020
UNIQURE NV(QURE)(Call)135,000135,00001,4311,882+451
NUVATION BIO INC(NUVB)963,333963,33301,6951,8780.11%+183
SURROZEN INC66,66566,66507775960.04%-181
UPSTREAM BIO INC60,0000-60,0003670-367
REPLIMUNE GROUP INC(REPL)850,341850,34108,2917,9000.47%-391
ETON PHARMACEUTICALS INC(ETON)(Call)50,5000-50,5006550-655
ALIGOS THERAPEUTICS INC88,5690-88,5697310-731
TSCAN THERAPEUTICS INC662,8330-662,8339150-915
VOYAGER THERAPEUTICS INC3,917,5463,917,546013,24112,1840.72%-1,058
DAY ONE BIOPHARMACEUTICALS I
COM
862,068862,06806,8365,6030.33%-1,233
PRIME MEDICINE INC700,0000-700,0001,3930-1,393
KALARIS THERAPEUTICS INC201,7180-201,7181,6200-1,620
WHITEHAWK THERAPEUTICS INC2,082,0001,091,417-990,5833,7062,0410.12%-1,665
RELAY THERAPEUTICS INC(RLAY)641,4260-641,4261,6810-1,681
KEROS THERAPEUTICS INC187,5000-187,5001,9110-1,911
MADRIGAL PHARMACEUTICALS INC(MDGL)75,00075,000024,84222,6981.34%-2,144
AVIDITY BIOSCIENCES INC557,576500,000-57,57616,46014,2000.84%-2,260
ORIC PHARMACEUTICALS INC(ORIC)3,418,0681,618,068-1,800,00019,07316,4230.97%-2,649
SOLID BIOSCIENCES INC744,4500-744,4502,7540-2,754
ADAPTIMMUNE THERAPEUTICS PLC27,404,0700-27,404,0705,3990-5,399
VERVE THERAPEUTICS INC1,250,0000-1,250,0005,7130-5,712
JANUX THERAPEUTICS INC(JANX)1,469,8181,469,818039,68533,9532.01%-5,732
BICYCLE THERAPEUTICS PLC910,0000-910,0007,7260-7,726
GINKGO BIOWORKS HOLDINGS INC1,462,3280-1,462,3288,3350-8,335
BEAM THERAPEUTICS INC(BEAM)526,6850-526,68510,2860-10,286
XENCOR INC(XNCR)6,144,7676,144,767065,38048,2982.86%-17,082
CRINETICS PHARMACEUTICALS IN(CRNX)4,288,1204,288,1200143,824123,3267.30%-20,497
JAZZ PHARMACEUTICALS PLC(JAZZ)1,706,4691,706,4690211,858181,09010.72%-30,768
APELLIS PHARMACEUTICALS INC
COM
11,895,80811,895,8080260,161205,91612.19%-54,245
SAREPTA THERAPEUTICS INC(SRPT)1,292,3860-1,292,38682,4800-82,480
PROTHENA CORP PLC
SHS
11,584,2800-11,584,280143,3550-143,355
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