QTRX · Quanterix Corp · Holdings

$2.56 +0.06 (+2.40%) At close · Sep 11

Russell 2000 member Rebalance outlook locked

Market Cap

$121.07M

47.29M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Quarter:

Holders: 133

Total Value: $128,383,294

Total Shares: 29,718,646

Showing 1–100 of 135 holdings by value · page 1 of 2

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 133 13F filers · Δ vs Mar 31, 2026

Top Holder

12.2%

+2.5 pts

Top 5

45.6%

+7.3 pts

Top 10

65.6%

+6.8 pts

HHI

572

Broadly held+121

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +5

Institutional value: -0.0%

Shares held: -18.6%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Large First Eagle Investment Management, LLC	+1,453,078	2,753,165
Small Blue Water Life Science Advisors, LP	+1,332,055	3,474,202
Mega AQR CAPITAL MANAGEMENT LLC	+1,258,873	1,343,005
Mega BlackRock, Inc.	+357,816	3,635,411
Large MARSHALL WACE, LLP	+351,492	973,872

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega AMERIPRISE FINANCIAL INC	−2,554,950	987,424
Mid Portolan Capital Management, LLC	−1,046,515	1,899,308
Mega MILLENNIUM MANAGEMENT LLC	−648,505	40,662
Mega Russell Investments Group, Ltd.	−604,259	37,722
Mega ROYAL BANK OF CANADA	−230,626	1,475

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Small Lionhunter Capital Management, LLC	1,500,427	$6,481,844
Large JACOBS LEVY EQUITY MANAGEMENT, INC	487,600	$2,106,432
Large Balyasny Asset Management L.P.	260,000	$1,123,200
Mid Susquehanna Portfolio Strategies, LLC	148,618	$642,029
Large Quadrature Capital Ltd	80,200	$346,464

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Large WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	2,083,699	$7,334,620
Mid Invenomic Capital Management LP	1,932,386	$6,801,998
Mid LEVIN CAPITAL STRATEGIES, L.P.	1,464,052	$5,153,463
Mid Trium Capital LLP	994,217	$3,499,643
Small Empire Financial Management Company, LLC	736,068	$2,590,959

Filter: New 37 Increased 44 Reduced 30 Sold out 32 Unchanged 22

Showing 100 of 135

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

BlackRock, Inc.

$15,704,971

12.23%

3,635,411

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	60,723	$262,323	1.7%	Sole
BlackRock Asset Management Canada Ltd	264	$1,140	0.0%	Sole
BlackRock Investment Management, LLC	125,405	$541,749	3.4%	Sole
BLACKROCK ADVISORS LLC	120,111	$518,879	3.3%	Sole
BlackRock Fund Advisors	2,033,255	$8,783,661	55.9%	Sole
BlackRock Institutional Trust Company, N.A.	1,267,158	$5,474,122	34.9%	Sole
BlackRock Investment Management (UK) Ltd.	13,831	$59,749	0.4%	Sole
Aperio Group, LLC	14,664	$63,348	0.4%	Sole

Blue Water Life Science Advisors, LP

$15,008,552

11.69%

3,474,202

First Eagle Investment Management, LLC

$11,893,672

9.26%

2,753,165

Portolan Capital Management, LLC

$8,205,010

6.39%

1,899,308

VANGUARD CAPITAL MANAGEMENT LLC

$7,778,782

6.06%

1,800,644

Lionhunter Capital Management, LLC

$6,481,844

5.05%

1,500,427

AQR CAPITAL MANAGEMENT LLC

$5,801,779

4.52%

1,343,005

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RF&L WEALTH MANAGEMENT, LLC	77	$332	0.0%	Other
Arax Advisory Partners	6,888	$29,756	0.5%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	2,815	$12,160	0.2%	Other
Stokes Family Office, LLC	4,345	$18,770	0.3%	Other
Held directly	1,328,880	$5,740,761	98.9%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$4,887,547

3.81%

1,131,377

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	163,253	$705,252	14.4%	Defined
Held directly	968,124	$4,182,295	85.6%	Defined

AMERIPRISE FINANCIAL INC

$4,265,671

3.32%

987,424

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	987,424	$4,265,671	100.0%	Defined

MARSHALL WACE, LLP

$4,207,126

3.28%

973,872

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	973,872	$4,207,126	100.0%	Other

STATE STREET CORP

$4,027,566

3.14%

932,307

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	932,307	$4,027,566	100.0%	Defined

Tikvah Management LLC

$2,469,117

1.92%

571,555

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Simcah Management LLC	571,555	$2,469,117	100.0%	Defined

VANGUARD PORTFOLIO MANAGEMENT LLC

$2,114,925

1.65%

489,566

JACOBS LEVY EQUITY MANAGEMENT, INC

$2,106,432

1.64%

487,600

MORGAN STANLEY

$1,934,008

1.51%

447,688

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	18	$77	0.0%	Defined
MORGAN STANLEY & CO. LLC	12,918	$55,805	2.9%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	142,454	$615,401	31.8%	Defined
MORGAN STANLEY SMITH BARNEY LLC	330	$1,425	0.1%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	291,968	$1,261,300	65.2%	Defined

JANE STREET GROUP, LLC

$1,810,295

1.41%

419,050

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	412,060	$1,780,099	98.3%	Defined
Jane Street Global Trading, LLC	6,990	$30,196	1.7%	Defined

GSA CAPITAL PARTNERS LLP

$1,772,288

1.38%

410,252

TUDOR INVESTMENT CORP ET AL

$1,729,736

1.35%

400,402

DIMENSIONAL FUND ADVISORS LP

$1,718,637

1.34%

397,833

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Fund Advisors Ltd.	3,460	$14,947	0.9%	Defined
DFA Australia Ltd.	8,199	$35,419	2.1%	Defined
Dimensional Ireland Ltd	38,710	$167,227	9.7%	Defined
Held directly	347,464	$1,501,044	87.3%	Sole

NORTHERN TRUST CORP

$1,456,819

1.13%

337,227

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	330,987	$1,429,863	98.1%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	6,240	$26,956	1.9%	Other

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$1,342,228

1.05%

310,701

VANGUARD FIDUCIARY TRUST CO

$1,245,503

0.97%

288,311

UBS Group AG

$1,218,144

0.95%

281,978

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	1,177	$5,084	0.4%	Defined
UBS AG	280,801	$1,213,060	99.6%	Defined

Balyasny Asset Management L.P.

$1,123,200

0.87%

260,000

Nuveen, LLC

$1,004,796

0.78%

232,592

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	397	$1,715	0.2%	Defined
TIAA CREF INVESTMENT MANAGEMENT LLC joint	149,880	$647,481	64.4%	Defined
TEACHERS ADVISORS, LLC joint	82,315	$355,600	35.4%	Defined

CITADEL ADVISORS LLC

$992,459

0.77%

229,736

XTX Topco Ltd

$985,111

0.77%

228,035

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	228,035	$985,111	100.0%	Defined

Point72 Asset Management, L.P.

$974,820

0.76%

225,653

GOLDMAN SACHS GROUP INC

$916,081

0.71%

212,056

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	60,901	$263,092	28.7%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	151,155	$652,989	71.3%	Defined

FMR LLC

$909,938

0.71%

210,634

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	210,554	$909,593	100.0%	Defined
STRATEGIC ADVISERS LLC	80	$345	0.0%	Defined

IRONWOOD INVESTMENT MANAGEMENT LLC

$736,797

0.57%

170,555

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$728,437

0.57%

168,620

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	156,396	$675,630	92.8%	Other
G1 EXECUTION SERVICES, LLC	12,224	$52,807	7.2%	Other

Invesco Ltd.

$695,030

0.54%

160,887

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	5,187	$22,407	3.2%	Defined
Invesco Trust Co joint	16,884	$72,938	10.5%	Defined
Invesco Capital Management LLC	138,816	$599,685	86.3%	Defined

WELLS FARGO & COMPANY/MN

$644,362

0.50%

149,158

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	35,845	$154,850	24.0%	Defined
WELLS FARGO CLEARING SERVICES, LLC	113,313	$489,512	76.0%	Defined

Susquehanna Portfolio Strategies, LLC

$642,029

0.50%

148,618

BNP PARIBAS ARBITRAGE, SA

$591,304

0.46%

136,876

Bank of New York Mellon Corp

$569,805

0.44%

131,900

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	43,295	$187,034	32.8%	Defined
The Bank of New York Mellon	83,074	$358,879	63.0%	Defined
BNY Mellon, NA joint	5,530	$23,888	4.2%	Defined
Held directly	1	$4	0.0%	Defined

SCS Capital Management LLC

$518,551

0.40%

120,035

AMERICAN CENTURY COMPANIES INC

$434,000

0.34%

100,463

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AMERICAN CENTURY INVESTMENT MANAGEMENT INC	100,463	$434,000	100.0%	Defined

PRICE T ROWE ASSOCIATES INC /MD/

$413,104

0.32%

95,626

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	95,626	$413,104	100.0%	Defined

Quadrature Capital Ltd

$346,464

0.27%

80,200

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Quadrature US Inc.	80,200	$346,464	100.0%	Other

Cerity Partners LLC

$337,317

0.26%

78,083

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$294,736

0.23%

68,226

Clearstead Advisors, LLC

$268,967

0.21%

62,261

Jain Global LLC

$247,618

0.19%

57,319

ALLIANCEBERNSTEIN L.P.

$245,289

0.19%

56,780

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	56,780	$245,289	100.0%	Defined

ALGERT GLOBAL LLC

$238,537

0.19%

55,217

RHUMBLINE ADVISERS

$231,366

0.18%

53,557

PEDDOCK CAPITAL ADVISORS, LLC

$225,093

0.18%

52,105

MILLENNIUM MANAGEMENT LLC

$175,659

0.14%

40,662

SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC

$168,311

0.13%

38,961

CANADA PENSION PLAN INVESTMENT BOARD

$164,592

0.13%

38,100

Russell Investments Group, Ltd.

$162,957

0.13%

37,722

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC joint	29,493	$127,408	78.2%	Defined
Russell Investments Capital, LLC joint	2,779	$12,005	7.4%	Other
Russell Investments Trust Company joint	5,450	$23,544	14.4%	Other

DEUTSCHE BANK AG\

$158,448

0.12%

36,678

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS Investments UK Ltd	36,678	$158,448	100.0%	Defined

IEQ CAPITAL, LLC

$153,390

0.12%

35,507

BANK OF AMERICA CORP /DE/

$126,515

0.10%

29,286

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	29,286	$126,515	100.0%	Defined

WEALTH ENHANCEMENT ADVISORY SERVICES, LLC

$116,268

0.09%

26,914

MERCER GLOBAL ADVISORS INC /ADV

$111,157

0.09%

25,731

AXQ CAPITAL, LP

$110,587

0.09%

25,599

MetLife Investment Management, LLC

$107,140

0.08%

24,801

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	24,801	$107,140	100.0%	Defined

Aigen Investment Management, LP

$105,096

0.08%

24,328

OSAIC HOLDINGS, INC.

$104,440

0.08%

24,176

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	24,176	$104,440	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$94,176

0.07%

21,800

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	21,800	$94,176	100.0%	Other

Dynamic Technology Lab Private Ltd

$89,925

0.07%

20,816

LPL Financial LLC

$86,827

0.07%

20,099

CITIGROUP INC

$85,160

0.07%

19,713

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	19,713	$85,160	100.0%	Defined

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$84,909

0.07%

19,655

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	19,655	$84,909	100.0%	Defined

JPMORGAN CHASE & CO

$82,290

0.06%

19,049

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	17,975	$77,651	94.4%	Defined
J.P. Morgan Investment Management Inc.	260	$1,123	1.4%	Defined
J.P. Morgan Securities LLC	200	$864	1.0%	Defined
J.P. Morgan Securities plc	614	$2,652	3.2%	Defined

Creative Planning

$80,084

0.06%

18,538

Vanguard Global Advisers, LLC

$80,028

0.06%

18,525

D. E. Shaw & Co., Inc.

$76,343

0.06%

17,672

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. Shaw Investment Management, L.L.C. joint	17,672	$76,343	100.0%	Defined

NISA INVESTMENT ADVISORS, LLC

$74,977

0.06%

17,356

BARCLAYS PLC

$68,277

0.05%

15,805

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	14,675	$63,396	92.9%	Defined
BARCLAYS CAPITAL INC.	1,130	$4,881	7.1%	Defined

HUB Investment Partners, LLC

$67,970

0.05%

15,734

Mariner, LLC

$66,834

0.05%

15,471

Engineers Gate Manager LP

$63,966

0.05%

14,807

Jump Financial, LLC

$63,504

0.05%

14,700

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Leap GP LLC joint	14,700	$63,504	100.0%	Defined

CAPTRUST FINANCIAL ADVISORS

$61,780

0.05%

14,301

JANE STREET GROUP, LLC

$61,776

0.05%

14,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	14,300	$61,776	100.0%	Defined

MANUFACTURERS LIFE INSURANCE COMPANY, THE

$59,564

0.05%

13,788

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MANULIFE FINANCIAL CORP joint	13,788	$59,564	100.0%	Defined

HighTower Advisors, LLC

$59,011

0.05%

13,660

Vanguard Personalized Indexing Management, LLC

$57,192

0.04%

13,239

PharVision Advisers, LLC

$56,328

0.04%

13,039

Schonfeld Strategic Advisors LLC

$54,704

0.04%

12,663

Post Resch Tallon Group Inc.

$54,000

0.04%

12,500

Qube Research & Technologies Ltd

$51,783

0.04%

11,987

KESTRA PRIVATE WEALTH SERVICES, LLC

$48,790

0.04%

11,294

IMC-Chicago, LLC

$44,124

0.03%

10,214

Police & Firemen's Retirement System of New Jersey

$43,467

0.03%

10,062

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	10,062	$43,467	100.0%	Defined

Cresset Asset Management, LLC

$43,200

0.03%

10,000

Arax Advisory Partners

$32,650

0.03%

7,558

SIMPLEX TRADING, LLC

$30,788

0.02%

7,127

PNC FINANCIAL SERVICES GROUP, INC.

$30,771

0.02%

7,123

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PNC Bank, National Association	7,123	$30,771	100.0%	Defined

NEW YORK STATE COMMON RETIREMENT FUND

$28,084

0.02%

6,501

Legal & General Group Plc

$17,249

0.01%

3,993

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management America Inc	3,993	$17,249	100.0%	Defined

Ameritas Investment Partners, Inc.

$15,012

0.01%

3,475

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
EATON VANCE MANAGEMENT	3,475	$15,012	100.0%	Other

Tower Research Capital LLC (TRC)

$13,426

0.01%

3,108

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	3,108	$13,426	100.0%	Defined

Sachetta, LLC

$12,960

0.01%

3,000

Allworth Financial LP

$9,257

0.01%

2,143

GROUP ONE TRADING LLC

$8,350

0.01%

1,933

Key facts CIK 1503274 CUSIP 74766Q101 13F (30d) 46 filings 46 filers Visit website Investor relations