EcoR1 Capital, LLC - Q2 2021 holdings

$2.68 Billion is the total value of EcoR1 Capital, LLC's 72 reported holdings in Q2 2021. The portfolio turnover from Q1 2021 to Q2 2021 was 35.2% .

 Value Shares↓ Weighting
PRTA BuyPROTHENA CORP PLC$580,125,000
+109.3%
11,284,280
+2.3%
21.68%
+76.4%
MORF BuyMORPHIC HLDG INC$226,780,000
+19.5%
3,951,566
+31.7%
8.48%
+0.7%
ANAB BuyANAPTYSBIO INC$195,020,000
+26.5%
7,521,024
+5.2%
7.29%
+6.6%
XNCR BuyXENCOR INC$169,212,000
-19.8%
4,906,106
+0.1%
6.32%
-32.4%
RLAY BuyRELAY THERAPEUTICS INC$164,208,000
+38.5%
4,487,776
+30.9%
6.14%
+16.7%
NUVB BuyNUVATION BIO INC$127,654,000
-7.8%
13,711,517
+3.5%
4.77%
-22.3%
STTK BuySHATTUCK LABS INC$96,201,000
+33.8%
3,318,410
+35.0%
3.60%
+12.8%
RCUS BuyARCUS BIOSCIENCES INC$91,586,000
+48.5%
3,335,247
+51.9%
3.42%
+25.2%
ALEC BuyALECTOR INC$88,374,000
+628.2%
4,242,634
+604.1%
3.30%
+513.9%
SBTX BuySILVERBACK THERAPEUTICS INC$80,871,000
-26.8%
2,618,036
+3.3%
3.02%
-38.4%
KURA BuyKURA ONCOLOGY INC$77,655,000
-25.6%
3,724,437
+0.9%
2.90%
-37.3%
MRTX  MIRATI THERAPEUTICS INC$74,998,000
-5.7%
464,2980.0%2.80%
-20.5%
ORIC  ORIC PHARMACEUTICALS INC$54,701,000
-27.8%
3,092,2180.0%2.04%
-39.2%
NRIX SellNURIX THERAPEUTICS INC$52,210,000
-16.8%
1,967,950
-2.5%
1.95%
-29.9%
RNA  AVIDITY BIOSCIENCES INC$51,989,000
+13.3%
2,103,9500.0%1.94%
-4.5%
JANX NewJANUX THERAPEUTICS INC$35,229,0001,411,975
+100.0%
1.32%
SLDB  SOLID BIOSCIENCES INC$33,682,000
-33.8%
9,202,7020.0%1.26%
-44.2%
GRTS  GRITSTONE BIO INC$31,236,000
-3.2%
3,421,2870.0%1.17%
-18.4%
TBIO BuyTRANSLATE BIO INC$28,889,000
+193.5%
1,048,976
+75.7%
1.08%
+147.1%
ITOS BuyITEOS THERAPEUTICS INC$26,570,000
+199.0%
1,035,864
+298.4%
0.99%
+152.0%
EWTX  EDGEWISE THERAPEUTICS INC$26,112,000
-34.4%
1,224,1750.0%0.98%
-44.7%
KYMR BuyKYMERA THERAPEUTICS INC$25,192,000
+548.3%
519,416
+419.4%
0.94%
+447.1%
DSGN BuyDESIGN THERAPEUTICS INC$25,062,000
-26.3%
1,260,019
+10.7%
0.94%
-37.9%
AKUS  AKOUOS INC$24,799,000
-9.5%
1,975,9840.0%0.93%
-23.8%
ARVN BuyARVINAS INC$24,773,000
+17.6%
321,724
+0.9%
0.93%
-0.9%
OVID  OVID THERAPEUTICS INC$23,781,000
-2.7%
6,082,2000.0%0.89%
-18.0%
NLTX SellNEOLEUKIN THERAPEUTICS INC$21,772,000
-43.4%
2,358,804
-24.5%
0.81%
-52.3%
ACIU SellAC IMMUNE SA$21,000,000
-24.4%
2,648,163
-27.4%
0.78%
-36.2%
BCEL  ATRECA INC$20,675,000
-44.4%
2,426,6850.0%0.77%
-53.2%
CNTA NewCENTESSA PHARMACEUTICALS PLCsponsored ads$16,758,000754,545
+100.0%
0.63%
KDNY SellCHINOOK THERAPEUTICS INC$13,155,000
-32.3%
931,650
-25.5%
0.49%
-42.9%
ZNTL NewZENTALIS PHARMACEUTICALS INC$10,640,000200,000
+100.0%
0.40%
CRVS NewCORVUS PHARMACEUTICALS INC$9,557,0003,579,377
+100.0%
0.36%
KRON  KRONOS BIO INC$9,277,000
-18.2%
387,3570.0%0.35%
-31.0%
BCTG  BCTG ACQUISITION CORP$9,104,000
+2.3%
800,0000.0%0.34%
-13.9%
NUVBWS  NUVATION BIO INC*w exp 07/07/202$8,969,000
-10.9%
963,3330.0%0.34%
-24.9%
ALVR  ALLOVIR INC$8,824,000
-15.6%
447,0120.0%0.33%
-28.9%
CCCC  C4 THERAPEUTICS INC$7,568,000
+2.3%
200,0000.0%0.28%
-13.7%
CYCN  CYCLERION THERAPEUTICS INC$6,264,000
+39.8%
1,606,2760.0%0.23%
+17.6%
VERV NewVERVE THERAPEUTICS INC$6,025,000100,000
+100.0%
0.22%
SYRS  SYROS PHARMACEUTICALS INC$5,450,000
-27.1%
1,000,0000.0%0.20%
-38.6%
JYAC  JIYA ACQUISITION CORP$4,970,000
+1.0%
500,0000.0%0.19%
-14.7%
ALPN SellALPINE IMMUNE SCIENCES INC$4,704,000
-40.1%
522,635
-29.5%
0.18%
-49.6%
DYN  DYNE THERAPEUTICS INC$4,524,000
+35.5%
215,0000.0%0.17%
+14.2%
HSAQ  HEALTH SCIENCES ACQ CORP 2$4,080,000
-8.8%
400,0000.0%0.15%
-23.6%
MGTA SellMAGENTA THERAPEUTICS INC$3,588,000
-45.5%
366,867
-34.1%
0.13%
-54.1%
IGMS NewIGM BIOSCIENCES INC$3,164,00038,030
+100.0%
0.12%
ODT NewODONATE THERAPEUTICS INC$2,901,000831,200
+100.0%
0.11%
NGM  NGM BIOPHARMACEUTICALS INC$2,831,000
-32.2%
143,5670.0%0.11%
-42.7%
FMTX NewFORMA THERAPEUTICS HLDGS INC$2,629,000105,638
+100.0%
0.10%
BOLT  BOLT BIOTHERAPEUTICS INC$2,319,000
-53.0%
150,0000.0%0.09%
-60.3%
BCAB  BIOATLA INC$2,119,000
-16.6%
50,0000.0%0.08%
-30.1%
BLSA  BCLS ACQUISITION CORP$2,106,000
-0.4%
200,0000.0%0.08%
-16.0%
HLXA  HELIX ACQUISITION CORP$2,070,000
+1.5%
200,0000.0%0.08%
-14.4%
FVAM  5 01 ACQUISITION CORP$1,994,000
-0.2%
200,0000.0%0.08%
-15.7%
CHFW NewCONSONANCE HFW ACQUISITION C$1,987,000200,000
+100.0%
0.07%
EUCR  EUCRATES BIOMEDICAL ACQU COR$1,969,000
-1.4%
200,0000.0%0.07%
-16.9%
FLAC NewFRAZIER LIFESCIENCES ACQU CO$1,957,000200,495
+100.0%
0.07%
PMVP  PMV PHARMACEUTICALS INC$1,708,000
+3.8%
50,0000.0%0.06%
-12.3%
ARYD  ARYA SCIENCES ACQU CORP IVcl a$1,608,000
+2.4%
150,0000.0%0.06%
-14.3%
RPTX  REPARE THERAPEUTICS INC$1,559,000
+1.6%
50,0000.0%0.06%
-14.7%
FSII  FS DEVELOPMENT CORP II$1,497,000
+0.2%
150,0000.0%0.06%
-15.2%
MGTX  MEIRAGTX HLDGS PLC$1,470,000
+7.5%
94,8190.0%0.06%
-9.8%
CMAXW NewCAREMAX INC*w exp 06/08/202$1,290,000100,000
+100.0%
0.05%
TMPM  TURMERIC ACQUISITION CORPcl a$989,000
+1.2%
100,0000.0%0.04%
-14.0%
CHFWWS NewCONSONANCE HFW ACQUISITION C*w exp 10/28/202$662,00066,665
+100.0%
0.02%
EUCRW  EUCRATES BIOMEDICAL ACQU COR*w exp 10/23/202$656,000
-1.4%
66,6660.0%0.02%
-13.8%
FLACW NewFRAZIER LIFESCIENCES ACQU CO*w exp 11/30/202$651,00066,665
+100.0%
0.02%
KNTE  KINNATE BIOPHARMA INC$582,000
-25.3%
25,0000.0%0.02%
-37.1%
OMEG  OMEGA ALPHA SPACcl a$498,000
+0.6%
50,0000.0%0.02%
-13.6%
FSTX  F-STAR THERAPEUTICS INC$395,000
-20.7%
46,0000.0%0.02%
-31.8%
TMPMW  TURMERIC ACQUISITION CORP*w exp 10/08/202$330,000
+1.2%
33,3330.0%0.01%
-14.3%
MTCR ExitMETACRINE INC$0-62,207
-100.0%
-0.02%
LSAQ ExitLIFESCI ACQUISITION II CORP$0-56,500
-100.0%
-0.02%
DFHTW ExitDEERFIELD HEALTHCARE TECH AC*w exp 07/16/202$0-100,000
-100.0%
-0.05%
CDAK ExitCODIAK BIOSCIENCES INC$0-115,195
-100.0%
-0.08%
CHFWU ExitCONSONANCE HFW ACQUISITION Cunit 99/99/9999$0-200,000
-100.0%
-0.09%
FLACU ExitFRAZIER LIFESCIENCES ACQU COunit 12/09/2025$0-200,000
-100.0%
-0.09%
ARPO ExitAERPIO PHARMACEUTICALS INC$0-2,072,782
-100.0%
-0.12%
VINCW ExitVINCERX PHARMA INC*w exp 12/24/202$0-150,000
-100.0%
-0.13%
LOGC ExitLOGICBIO THERAPEUTICS INC$0-688,700
-100.0%
-0.22%
PRTA ExitPROTHENA CORP PLCcall$0-250,000
-100.0%
-0.28%
AMTI ExitAPPLIED MOLECULAR TRANS INC$0-239,443
-100.0%
-0.47%
ELDN ExitELEDON PHARMACEUTICALS INC$0-1,115,721
-100.0%
-0.53%
Original filings

The following EDGAR filing(s) were analyzed to create this report:

  • View 13F-HR filed 2021-08-16
Signatures

The EDGAR filing(s) were signed by:

Top long-term holdings
NameQuarters ownedLatest quarter ownedMax weighting
KURA ONCOLOGY ORD32Q3 202310.5%
XENCOR ORD25Q3 202312.6%
ASSEMBLY BIOSCIENCES ORD23Q3 202019.0%
FIBROGEN ORD22Q1 202012.4%
PROTHENA ORD20Q3 202328.0%
IRONWOOD PHARMA CL A ORD20Q1 202013.9%
GALAPAGOS NV SPON ADR19Q3 202312.0%
MORPHIC HOLDING ORD18Q3 20238.5%
ARCUS BIOSCIENCES ORD17Q1 20227.1%
ANAPTYSBIO INC16Q3 20238.3%

View EcoR1 Capital, LLC's complete holdings history.

Latest significant ownerships (13-D/G)
EcoR1 Capital, LLC Q2 2021 significant holdings filed using form 13D/G when ownership exceeds 5% of a company's total stock issue.
FiledShares Percentage
Mersana Therapeutics, Inc.July 27, 202319,364,68816.9%
TScan Therapeutics, Inc.June 05, 20235,000,00011.7%
2seventy bio, Inc.February 14, 20231,143,4943.0%
Avidity Biosciences, Inc.Sold outFebruary 14, 202300.0%
Surface Oncology, Inc.February 13, 20233,924,7136.5%
Akouos, Inc.Sold outFebruary 10, 202300.0%
Alector, Inc.February 10, 20234,056,5484.9%
Arcus Biosciences, Inc.Sold outFebruary 10, 202300.0%
Gritstone bio, Inc.Sold outFebruary 10, 202300.0%
Ovid Therapeutics Inc.February 10, 20236,117,4008.7%

View EcoR1 Capital, LLC's complete significant-ownership history.

Latest filings
TypeFiled
32024-03-26
SC 13G/A2024-03-26
SC 13G2024-03-11
SC 13D2024-02-22
SC 13G2024-02-16
13F-HR2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14
SC 13G/A2024-02-14

View EcoR1 Capital, LLC's complete filings history.

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