QUANTERIX CORP

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QTRX·74766Q101·US·Common Stock·Healthcare - Medical Devices-Activist

QTRX (QUANTERIX CORP) is held by 84 institutional investors as of Q2 2026. Largest holders: First Eagle Investment Management, LLC ($23.8M), BlackRock, Inc. ($15.7M), VANGUARD CAPITAL MANAGEMENT LLC ($7.8M). Net institutional sentiment: Mixed.

84

Holders

(9 Elite)

$101.7M

Total Value

60% (89)

Consensus

53 buying - 36 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)30

Insider (Form 4)52

Activist (13D/13G)74

Congressional (STOCK Act)74

Holder Quality

32

★★★★★

Elite

78

★★★★

Strong

40

★★★

Solid

78

★★

Below

47

★

Weak

Held by 84 funds

9 elite

Who's Trading

Source dates: Price Oct 9, 2026 · Insiders Oct 2, 2026 · Activists Aug 14, 2026 · Congress none

InsiderMIMagovcevic-Liebisch IvanaExercise 4K shOct 2, 2026

InsiderMSMendel ScottVest 4K shOct 1, 2026

InsiderDPDONNELLY WILLIAM PVest 7K shOct 1, 2026

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Top Holders

Top Holders (84)History

AllNewIncreasedHeldDecreasedExitedFirst report

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
First Eagle Investment Management, LLC	Increased	5.5M(+323.5%)	$23.8M	0.0%	-36.20%	46
BlackRock, Inc.	Increased	3.6M(+10.9%)	$15.7M	0.0%	-66.00%	31
VAVANGUARD CAPITAL MANAGEMENT LLC	Increased	1.8M(+0.9%)	$7.8M	0.0%	-43.99%	28
AQR CAPITAL MANAGEMENT LLC	Increased	1.3M(+1496.3%)	$5.8M	0.0%	-28.79%	44
GEODE CAPITAL MANAGEMENT, LLC	Increased	1.1M(+13.7%)	$4.9M	0.0%	-86.27%	31
AMERIPRISE FINANCIAL INC	Decreased	987,424(-72.1%)	$4.3M	0.0%	-68.78%	0
MWMARSHALL WACE, LLP	Increased	973,872(+56.5%)	$4.2M	0.0%	-38.97%	38
STATE STREET CORP	Increased	932,307(+3.8%)	$4M	0.0%	-85.43%	28
VPVANGUARD PORTFOLIO MANAGEMENT LLC	Decreased	489,566(-15.1%)	$2.1M	0.0%	-44.12%	0
JACOBS LEVY EQUITY MANAGEMENT, INC	New	487,600	$2.1M	0.0%	-24.07%	36
MORGAN STANLEY	Decreased	447,688(-26.4%)	$1.9M	0.0%	-61.36%	0
JANE STREET GROUP, LLC	Increased	419,050(+169.2%)	$1.8M	0.0%	-43.30%	42
TUDOR INVESTMENT CORP ET AL	Increased	400,402(+26.7%)	$1.7M	0.0%	-42.84%	32
DIMENSIONAL FUND ADVISORS LP	Decreased	397,833(-10.2%)	$1.7M	0.0%	-80.15%	0
NORTHERN TRUST CORP	Decreased	337,227(-3.6%)	$1.5M	0.0%	-87.71%	0
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Decreased	310,701(-10.2%)	$1.3M	0.0%	-87.37%	0
VFVANGUARD FIDUCIARY TRUST CO	Increased	288,311(+6.6%)	$1.2M	0.0%	-43.20%	27
UBS Group AG	Decreased	281,978(-25.2%)	$1.2M	0.0%	-66.01%	0
Nuveen, LLC	Increased	232,592(+223.8%)	$1M	0.0%	-34.54%	40
CITADEL ADVISORS LLC	Increased	229,736(+276.6%)	$992,460	0.0%	-28.88%	40

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High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer