Fund HoldingsEcoR1 Capital, LLC

Total Portfolio Value
$1.69B
Total Bought
$282.19M
Total Sold
$534.37M
Net Transaction
-$252.18M
Filing Period:
Securities
SharesValue ($K)
Q4 2024
Q1 2025
Change
Q4 2024
Q1 2025
Weight (%)
Change
ANAPTYSBIO INC7,873,4487,880,094+6,646104,244146,4918.69%+42,246
AKERO THERAPEUTICS INC0440,000+440,000017,8111.06%+17,811
BEAM THERAPEUTICS INC(BEAM)0526,685+526,685010,2860.61%+10,286
SOLID BIOSCIENCES INC0744,450+744,45002,7540.16%+2,754
WHITEHAWK THERAPEUTICS INC345,2532,082,000+1,736,7471,0893,7060.22%+2,617
JAZZ PHARMACEUTICALS PLC(JAZZ)1,706,4691,706,4690210,152211,85812.57%+1,706
MADRIGAL PHARMACEUTICALS INC(MDGL)75,00075,000023,14324,8421.47%+1,700
KALARIS THERAPEUTICS INC0201,718+201,71801,6200.10%+1,620
METSERA INC050,000+50,00001,3610.08%+1,361
ETON PHARMACEUTICALS INC(ETON)1,829,6031,939,288+109,68524,37025,1721.49%+802
AVIDITY BIOSCIENCES INC557,576557,576016,21416,4600.98%+245
MONTE ROSA THERAPEUTICS INC(GLUE)(Call)21,7000-21,7001510-151
SURROZEN INC66,66566,66509577770.05%-179
GALAPAGOS NV(LKFT)155,006155,00604,2633,8940.23%-369
ARTIVA BIOTHERAPEUTICS INC41,4530-41,4534180-418
UPSTREAM BIO INC60,00060,00009863670.02%-619
PRIME MEDICINE INC700,000700,00002,0441,3930.08%-651
HOOKIPA PHARMA INC388,8610-388,8617820-782
NUVATION BIO INC(NUVB)963,333963,33302,5621,6950.10%-867
RELAY THERAPEUTICS INC(RLAY)641,426641,42602,6431,6810.10%-962
KEROS THERAPEUTICS INC187,500187,50002,9681,9110.11%-1,057
VERVE THERAPEUTICS INC1,250,0001,250,00007,0505,7130.34%-1,337
ETON PHARMACEUTICALS INC(ETON)(Call)151,40050,500-100,9002,017655-1,361
REPLIMUNE GROUP INC(REPL)850,341850,341010,2988,2910.49%-2,007
GENERATION BIO CO2,046,8670-2,046,8672,1700-2,170
DESIGN THERAPEUTICS INC(DSGN)426,6830-426,6832,6330-2,633
ATARA BIOTHERAPEUTICS INC532,134573,183+41,0497,0833,4050.20%-3,678
ALLOVIR INC408,6880-408,6883,9480-3,948
DAY ONE BIOPHARMACEUTICALS I
COM
862,068862,068010,9226,8360.41%-4,086
BICYCLE THERAPEUTICS PLC910,000910,000012,7407,7260.46%-5,014
FATE THERAPEUTICS INC3,049,4050-3,049,4055,0320-5,032
UNIQURE NV(QURE)(Call)385,000135,000-250,0006,7991,431-5,368
CRISPR THERAPEUTICS AG(CRSP)1,389,2761,389,276054,68247,2772.80%-7,405
ORIC PHARMACEUTICALS INC(ORIC)3,418,0683,418,068027,58419,0731.13%-8,511
GINKGO BIOWORKS HOLDINGS INC1,743,3441,462,328-281,01617,1208,3350.49%-8,784
VOYAGER THERAPEUTICS INC3,917,5463,917,546022,21213,2410.79%-8,971
ADAPTIMMUNE THERAPEUTICS PLC27,404,07027,404,070014,7635,3990.32%-9,364
ALIGOS THERAPEUTICS INC255,57388,569-167,00410,1827310.04%-9,451
SAREPTA THERAPEUTICS INC(SRPT)770,0001,292,386+522,38693,62482,4804.89%-11,144
ATEA PHARMACEUTICALS INC3,341,6530-3,341,65311,1950-11,195
DYNE THERAPEUTICS INC(DYN)555,6440-555,64413,0910-13,091
KURA ONCOLOGY INC(KURA)3,557,2692,640,298-916,97130,98417,4261.03%-13,558
IMMUNOME INC(IMNM)3,879,4154,079,415+200,00041,19927,4541.63%-13,745
MBX BIOSCIENCES INC(MBX)1,259,2731,259,273023,2089,2930.55%-13,915
KYMERA THERAPEUTICS INC(KYMR)350,0000-350,00014,0810-14,080
NEUROGENE INC1,271,3421,271,342029,06314,8870.88%-14,175
TSCAN THERAPEUTICS INC5,000,000662,833-4,337,16715,2009150.05%-14,285
ZYMEWORKS INC(ZYME)15,028,07917,259,548+2,231,469220,011205,56112.19%-14,450
MERSANA THERAPEUTICS INC11,328,0000-11,328,00016,1990-16,199
PROTHENA CORP PLC
SHS
11,584,28011,584,2800160,442143,3558.50%-17,087
UNIQURE NV(QURE)3,400,0003,988,971+588,97160,04442,2832.51%-17,761
MOONLAKE IMMUNOTHERAPEUTICS(MLTX)332,5220-332,52218,0060-18,006
TANGO THERAPEUTICS INC(TNGX)10,630,73610,630,736032,84914,5640.86%-18,285
CARGO THERAPEUTICS INC1,470,0000-1,470,00021,1970-21,197
NEUMORA THERAPEUTICS INC.2,071,4500-2,071,45021,9570-21,957
TECTONIC THERAPEUTIC INC849,143935,121+85,97839,20516,5610.98%-22,644
THIRD HARMONIC BIO INC3,182,4440-3,182,44432,7470-32,747
JANUX THERAPEUTICS INC(JANX)1,469,8181,469,818078,69439,6852.35%-39,009
SPRINGWORKS THERAPEUTICS INC1,560,0000-1,560,00056,3630-56,363
CRINETICS PHARMACEUTICALS IN(CRNX)4,288,1204,288,1200219,252143,8248.53%-75,428
XENCOR INC(XNCR)6,144,7676,144,7670141,20765,3803.88%-75,826
APELLIS PHARMACEUTICALS INC
COM
11,890,84311,895,808+4,965379,437260,16115.43%-119,275
ARVINAS INC6,726,4910-6,726,491128,9470-128,947
PFIZER INC(PFE)(Call)5,000,0000-5,000,000132,6500-132,650
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