Fund HoldingsEcoR1 Capital, LLC

Total Portfolio Value
$3.95B
Total Bought
$813.44M
Total Sold
$647.14M
Net Transaction
+$166.31M
Filing Period:
Securities
SharesValue ($K)
Q4 2023
Q1 2024
Change
Q4 2023
Q1 2024
Weight (%)
Change
SAREPTA THERAPEUTICS INC(SRPT)832,9071,919,835+1,086,92880,317248,5426.29%+168,225
CRINETICS PHARMACEUTICALS IN(CRNX)2,012,5174,155,375+2,142,85871,605194,5134.92%+122,908
CRISPR THERAPEUTICS AG(CRSP)01,389,276+1,389,276094,6932.40%+94,693
MORPHIC HLDG INC211,2622,384,384+2,173,1226,10183,9302.12%+77,829
NEUROGENE INC01,271,342+1,271,342064,7111.64%+64,711
IMMUNOME INC(IMNM)3,879,4153,879,415041,51095,7442.42%+54,234
ADAPTIMMUNE THERAPEUTICS PLC027,404,070+27,404,070043,2981.10%+43,298
MERSANA THERAPEUTICS INC19,364,68819,364,688044,92686,7542.19%+41,828
NUVATION BIO INC(NUVB)19,209,64319,209,643029,00769,9231.77%+40,917
KURA ONCOLOGY INC(KURA)5,806,8715,806,871083,503123,8613.13%+40,358
CELLDEX THERAPEUTICS INC(CLDX)0650,000+650,000027,2810.69%+27,281
LENZ THERAPEUTICS INC01,219,774+1,219,774027,2380.69%+27,238
NKARTA INC02,000,000+2,000,000021,6200.55%+21,620
VAXCYTE INC(PCVX)0300,000+300,000020,4930.52%+20,493
MADRIGAL PHARMACEUTICALS INC(MDGL)075,000+75,000020,0280.51%+20,028
AVIDITY BIOSCIENCES INC0757,576+757,576019,3330.49%+19,333
CENTESSA PHARMACEUTICALS PLC5,618,7795,618,779044,72563,4921.61%+18,767
ORIC PHARMACEUTICALS INC(ORIC)3,418,0683,418,068031,44646,9981.19%+15,552
ITEOS THERAPEUTICS INC1,115,0221,999,249+884,22712,20927,2700.69%+15,060
KURA ONCOLOGY INC(KURA)(Call)0700,000+700,000014,931+14,931
KEROS THERAPEUTICS INC0187,500+187,500012,4130.31%+12,413
DYNE THERAPEUTICS INC(DYN)0427,039+427,039012,1240.31%+12,124
KYVERNA THERAPEUTICS INC0450,000+450,000011,1780.28%+11,178
TSCAN THERAPEUTICS INC5,000,0005,000,000029,15039,7001.00%+10,550
ALLOVIR INC011,294,585+11,294,58508,5260.22%+8,526
KODIAK SCIENCES INC(KOD)01,613,600+1,613,60008,4880.21%+8,488
ANAPTYSBIO INC7,521,0247,521,0240161,100169,3734.28%+8,273
XENCOR INC(XNCR)5,282,5165,330,416+47,900112,148117,9622.98%+5,814
ARCUTIS BIOTHERAPEUTICS INC(ARQT)0500,000+500,00004,9550.13%+4,955
GENERATION BIO CO2,046,8672,046,86703,3778,3310.21%+4,953
PRIME MEDICINE INC0700,000+700,00004,9000.12%+4,900
VOYAGER THERAPEUTICS INC3,851,5073,917,546+66,03932,50736,4720.92%+3,966
ATEA PHARMACEUTICALS INC6,995,8616,145,861-850,00021,33724,8290.63%+3,492
GOSSAMER BIO INC9,195,4049,195,40408,39110,8510.27%+2,460
NUVATION BIO INC(NUVB)963,333963,33301,4553,5070.09%+2,052
ALIGOS THERAPEUTICS INC6,389,4686,389,46804,2436,2620.16%+2,019
ATARA BIOTHERAPEUTICS INC10,067,04310,167,043+100,0005,1627,0560.18%+1,894
ZYMEWORKS INC(ZYME)13,437,47313,437,4730139,615141,3623.58%+1,747
ARVINAS INC6,726,4916,726,4910276,862277,6707.02%+807
PROQR THRAPEUTICS N V
SHS EURO
2,980,0162,884,357-95,6595,9006,6050.17%+704
CAREMAX INC100,000100,0000504820.01%+432
SURROZEN INC66,66566,66506271,0470.03%+421
KODIAK SCIENCES INC(KOD)(Call)051,100+51,1000269+269
ALPINE IMMUNE SCIENCES INC01,000+1,0000400.00%+40
HOOKIPA PHARMA INC4,595,0244,595,02403,7223,2720.08%-450
NEWAMSTERDAM PHARMA COMPANY
*W EXP 99/99/999
66,6650-66,6657450-745
PMV PHARMACEUTICALS INC566,879566,87901,7579640.02%-794
VERVE THERAPEUTICS INC1,250,0001,250,000017,42516,6000.42%-825
OVID THERAPEUTICS INC6,117,4006,117,400019,69818,6580.47%-1,040
APELLIS PHARMACEUTICALS INC
COM
11,173,06811,357,425+184,357668,820667,58916.89%-1,230
PHATHOM PHARMACEUTICALS INC198,4800-198,4801,8120-1,812
TYRA BIOSCIENCES INC(TYRA)137,0140-137,0141,8980-1,898
ALLAKOS INC748,9000-748,9002,0440-2,044
NGM BIOPHARMACEUTICALS INC2,385,8730-2,385,8732,0490-2,049
JAZZ PHARMACEUTICALS PLC(JAZZ)1,013,9521,013,9520124,716122,1003.09%-2,616
REVOLUTION MEDICINES INC(RVMD)132,5790-132,5793,8020-3,802
PHARVARIS N V
COM
900,000900,000025,24520,7990.53%-4,446
THIRD HARMONIC BIO INC3,182,4443,182,444034,91130,0420.76%-4,869
NEUMORA THERAPEUTICS INC.2,071,4502,071,450035,31828,4820.72%-6,836
ALECTOR INC4,056,5484,056,548032,37124,4200.62%-7,951
EDGEWISE THERAPEUTICS INC(EWTX)3,493,1941,250,385-2,242,80938,21622,8070.58%-15,409
SPYRE THERAPEUTICS INC(SYRE)887,0760-887,07619,0900-19,090
GRAPHITE BIO INC8,538,4460-8,538,44622,3710-22,371
NEUROGENE INC1,271,3420-1,271,34224,6390-24,639
TANGO THERAPEUTICS INC(TNGX)13,330,73613,330,7360131,974105,8462.68%-26,128
GALAPAGOS NV(LKFT)5,756,2685,756,2680233,992185,3524.69%-48,640
ACADIA PHARMACEUTICALS INC5,991,4795,991,4790187,593110,7822.80%-76,811
ARGENX SE(ARGX)300,9970-300,997114,5080-114,508
PROTHENA CORP PLC
SHS
11,584,28011,584,2800420,973286,9437.26%-134,030
MIRATI THERAPEUTICS INC7,396,9790-7,396,979434,5730-434,573
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