Fund HoldingsEcoR1 Capital, LLC

Total Portfolio Value
$3.85B
Total Bought
$1.14B
Total Sold
$414.82M
Net Transaction
+$726.15M
Filing Period:
Securities
SharesValue ($K)
Q3 2023
Q4 2023
Change
Q3 2023
Q4 2023
Weight (%)
Change
APELLIS PHARMACEUTICALS INC
COM
10,899,85911,173,068+273,209414,631668,82017.37%+254,189
MIRATI THERAPEUTICS INC5,748,3997,396,979+1,648,580250,400434,57311.28%+184,172
ARVINAS INC5,467,0636,726,491+1,259,428107,373276,8627.19%+169,489
ARGENX SE(ARGX)0300,997+300,9970114,5082.97%+114,508
SAREPTA THERAPEUTICS INC(SRPT)0832,907+832,907080,3172.09%+80,317
JAZZ PHARMACEUTICALS PLC(JAZZ)368,4111,013,952+645,54147,687124,7163.24%+77,029
ACADIA PHARMACEUTICALS INC5,991,4795,991,4790124,862187,5934.87%+62,731
ZYMEWORKS INC(ZYME)13,437,47313,437,473085,194139,6153.62%+54,422
IMMUNOME INC(IMNM)03,879,415+3,879,415041,5101.08%+41,510
NEUMORA THERAPEUTICS INC.02,071,450+2,071,450035,3180.92%+35,318
GALAPAGOS NV(LKFT)5,756,2685,756,2680198,879233,9926.08%+35,113
TANGO THERAPEUTICS INC(TNGX)8,721,63613,330,736+4,609,10098,206131,9743.43%+33,769
KURA ONCOLOGY INC(KURA)5,806,8715,806,871052,95983,5032.17%+30,544
CRINETICS PHARMACEUTICALS IN(CRNX)1,530,2632,012,517+482,25445,51071,6051.86%+26,095
ANAPTYSBIO INC7,521,0247,521,0240135,078161,1004.18%+26,023
PHARVARIS N V
COM
0900,000+900,000025,2450.66%+25,245
NEUROGENE INC01,271,342+1,271,342024,6390.64%+24,639
MERSANA THERAPEUTICS INC19,364,68819,364,688024,59344,9261.17%+20,333
SPYRE THERAPEUTICS INC(SYRE)0887,076+887,076019,0900.50%+19,090
EDGEWISE THERAPEUTICS INC(EWTX)3,493,1943,493,194020,01638,2160.99%+18,200
VERVE THERAPEUTICS INC01,250,000+1,250,000017,4250.45%+17,425
TSCAN THERAPEUTICS INC5,000,0005,000,000012,80029,1500.76%+16,350
THIRD HARMONIC BIO INC2,982,4443,182,444+200,00019,05834,9110.91%+15,854
ITEOS THERAPEUTICS INC01,115,022+1,115,022012,2090.32%+12,209
ORIC PHARMACEUTICALS INC(ORIC)3,418,0683,418,068020,67931,4460.82%+10,767
CENTESSA PHARMACEUTICALS PLC5,618,7795,618,779036,35444,7251.16%+8,372
ALECTOR INC4,056,5484,056,548026,28632,3710.84%+6,085
XENCOR INC(XNCR)5,282,5165,282,5160106,443112,1482.91%+5,705
ATARA BIOTHERAPEUTICS INC010,067,043+10,067,04305,1620.13%+5,162
NUVATION BIO INC(NUVB)19,209,64319,209,643025,74129,0070.75%+3,266
VOYAGER THERAPEUTICS INC3,851,5073,851,507029,84932,5070.84%+2,658
PROQR THRAPEUTICS N V
SHS EURO
2,980,0162,980,01603,8745,9000.15%+2,026
TYRA BIOSCIENCES INC(TYRA)0137,014+137,01401,8980.05%+1,898
PMV PHARMACEUTICALS INC0566,879+566,87901,7570.05%+1,757
ALIGOS THERAPEUTICS INC3,948,3606,389,468+2,441,1082,9494,2430.11%+1,293
GRAPHITE BIO INC8,538,4468,538,446021,17522,3710.58%+1,195
HOOKIPA PHARMA INC4,595,0244,595,02402,8313,7220.10%+891
GOSSAMER BIO INC9,195,4049,195,40407,6588,3910.22%+733
SURROZEN INC66,66566,6650336270.02%+594
ATEA PHARMACEUTICALS INC6,995,8616,995,861020,98821,3370.55%+350
ALLAKOS INC748,900748,90001,7002,0440.05%+344
NUVATION BIO INC(NUVB)963,333963,33301,2911,4550.04%+164
NEWAMSTERDAM PHARMA COMPANY
*W EXP 99/99/999
66,66566,66506177450.02%+128
CAREMAX INC100,000100,0000212500.00%-162
TEMPEST THERAPEUTICS INC931,0000-931,0002840-284
REVOLUTION MEDICINES INC(RVMD)(Call)31,3000-31,3008660-866
AEGLEA BIOTHERAPEUTICS INC(SYRE)199,9960-199,9962,4500-2,450
PRELUDE THERAPEUTICS INC1,157,4520-1,157,4523,5770-3,577
OVID THERAPEUTICS INC6,117,4006,117,400023,49119,6980.51%-3,793
GENERATION BIO CO2,046,8672,046,86707,7583,3770.09%-4,380
NGM BIOPHARMACEUTICALS INC6,435,5182,385,873-4,049,6456,8862,0490.05%-4,837
PHATHOM PHARMACEUTICALS INC700,000198,480-501,5207,2591,8120.05%-5,447
PRIME MEDICINE INC600,0000-600,0005,7240-5,724
DECIPHERA PHARMACEUTICALS IN993,0000-993,00012,6310-12,631
ALLOGENE THERAPEUTICS INC4,488,2000-4,488,20014,2280-14,228
ACELYRIN INC1,402,2010-1,402,20114,2600-14,260
MORPHIC HLDG INC1,480,190211,262-1,268,92833,9116,1010.16%-27,810
APELLIS PHARMACEUTICALS INC(Call)
COM
732,5000-732,50027,8640-27,864
NEUMORA THERAPEUTICS INC.2,071,4500-2,071,45029,2280-29,228
RELAY THERAPEUTICS INC(RLAY)4,163,8240-4,163,82435,0180-35,018
SPRINGWORKS THERAPEUTICS INC3,460,2080-3,460,20880,0000-80,000
PROTHENA CORP PLC
SHS
11,584,28011,584,2800558,942420,97310.93%-137,969
REVOLUTION MEDICINES INC(RVMD)5,577,863132,579-5,445,284154,3953,8020.10%-150,593
Page 1 of 1