QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

Note: Option positions (PUT/CALL) are excluded.

InstitutionSharesValue ($000)
AMERIPRISE FINANCIAL INC4,996,073$31,775
Portolan Capital Management, LLC4,525,553$28,783
BlackRock, Inc.3,375,910$21,471
VANGUARD GROUP INC2,677,833$17,031
Blue Water Life Science Advisors, LP2,092,147$13,306
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC2,046,449$13,015
Invenomic Capital Management LP1,505,208$9,573
GEODE CAPITAL MANAGEMENT, LLC1,073,967$6,832
STATE STREET CORP893,401$5,682
MORGAN STANLEY822,998$5,234
Trium Capital LLP817,451$5,199
Williams Jones Wealth Management, LLC.638,939$4,064
Empire Financial Management Company, LLC617,830$3,929
EASTERLY INVESTMENT PARTNERS LLC616,681$3,922
Tikvah Management LLC571,619$3,635
First Eagle Investment Management, LLC531,427$3,380
MILLENNIUM MANAGEMENT LLC402,631$2,561
DIMENSIONAL FUND ADVISORS LP389,466$2,477
CHARLES SCHWAB INVESTMENT MANAGEMENT INC362,740$2,307
NORTHERN TRUST CORP345,564$2,198
Parkman Healthcare Partners LLC328,956$2,092
UBS Group AG311,499$1,981
TWO SIGMA INVESTMENTS, LP258,858$1,646
Russell Investments Group, Ltd.256,140$1,629
ENVESTNET ASSET MANAGEMENT INC252,211$1,604
GOLDMAN SACHS GROUP INC248,242$1,579
IRONWOOD INVESTMENT MANAGEMENT LLC172,330$1,096
TUDOR INVESTMENT CORP ET AL169,695$1,079
BNP PARIBAS ARBITRAGE, SA168,430$1,071
WELLS FARGO & COMPANY/MN162,686$1,035
FMR LLC159,907$1,017
MARSHALL WACE, LLP155,169$987
STATE OF WISCONSIN INVESTMENT BOARD147,824$940
Jump Financial, LLC144,095$916
Bank of New York Mellon Corp123,521$786
GSA CAPITAL PARTNERS LLP121,525$1
BARCLAYS PLC120,203$764
SCS Capital Management LLC120,035$763
JPMORGAN CHASE & CO114,021$725
Invesco Ltd.113,200$720
CITIGROUP INC112,380$715
abrdn plc104,039$662
SUSQUEHANNA INTERNATIONAL GROUP, LLP103,638$659
AMERICAN CENTURY COMPANIES INC103,208$656
ROYAL BANK OF CANADA101,001$642
CITADEL ADVISORS LLC98,572$627
TWO SIGMA ADVISERS, LP86,890$553
XTX Topco Ltd74,093$471
Nuveen, LLC71,455$454
JANE STREET GROUP, LLC69,383$441
AQR CAPITAL MANAGEMENT LLC65,522$417
Quantinno Capital Management LP63,791$406
Clarius Group, LLC62,060$395
Schonfeld Strategic Advisors LLC61,722$393
Mount Lucas Management LP56,500$359
Susquehanna Portfolio Strategies, LLC55,150$351
RHUMBLINE ADVISERS55,114$351
PEDDOCK CAPITAL ADVISORS, LLC52,105$331
PDT Partners, LLC47,668$303
D. E. Shaw & Co., Inc.45,627$290
ALLIANCEBERNSTEIN L.P.44,480$283
PRICE T ROWE ASSOCIATES INC /MD/43,778$0
BRIDGEWAY CAPITAL MANAGEMENT, LLC43,000$273
BANK OF AMERICA CORP /DE/42,547$271
LOS ANGELES CAPITAL MANAGEMENT LLC34,978$175
DEUTSCHE BANK AG\29,906$190
Numerai GP LLC29,762$189
PARAGON ASSOCIATES & PARAGON ASSOCIATES II JOINT VENTURE25,000$159
LPL Financial LLC24,877$158
ExodusPoint Capital Management, LP24,080$153
OSAIC HOLDINGS, INC.23,221$148
Quadrature Capital Ltd21,707$138
Virtu Financial LLC20,626$0
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.20,476$130
INTECH INVESTMENT MANAGEMENT LLC19,065$121
Brevan Howard Capital Management LP16,800$107
MetLife Investment Management, LLC15,967$102
Allspring Global Investments Holdings, LLC15,560$100
MANUFACTURERS LIFE INSURANCE COMPANY, THE14,128$90
HUB Investment Partners, LLC13,661$87
Vanguard Personalized Indexing Management, LLC13,172$84
HRT FINANCIAL LP13,018$0
Jain Global LLC12,677$81
RENAISSANCE TECHNOLOGIES LLC11,800$75
Post Resch Tallon Group Inc.11,575$74
COMMONWEALTH EQUITY SERVICES, LLC11,238$71
AXQ CAPITAL, LP11,009$70
Police & Firemen's Retirement System of New Jersey10,062$64
NEW YORK STATE COMMON RETIREMENT FUND6,501$41
US BANCORP \DE\6,357$40
DekaBank Deutsche Girozentrale4,566$0
Farther Finance Advisors, LLC4,078$26
Legal & General Group Plc3,993$25
Ameritas Investment Partners, Inc.3,475$22
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2,718$17
Sterling Capital Management LLC2,323$15
CWM, LLC1,952$0
Versant Capital Management, Inc1,778$11
Tower Research Capital LLC (TRC)1,620$10
Rockefeller Capital Management L.P.1,513$10
32 other institutions11,050$60
Total (132 institutions)35,112,446$221,954