Quanterix QTRX Institutional Ownership

NASDAQ QTRX

$3.54 -0.17 (-4.58%)

As of: Oct 1, 2026 · 9:51 AM EDT

Institutions by Trading Activity

132 Institutions

Increased 81 61.4%

Unchanged 21 15.9%

Reduced 30 22.7%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

63.05%

▼-14.52 pp QoQ

Shares Held by Institutions

29.74Mn

of 47.17Mn outstanding

▲+14.68% QoQ

Shares Outstanding

47.17Mn

17.43Mn held outside 13F filers

Institutional Investors

132

filed 13F for Jun 2026

▲+5 vs prior quarter

Net Shares Added (QoQ)

+3.81Mn

accumulated since last quarter

Value of Holdings

$110.33Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Quanterix Corp (NASDAQ:QTRX) has 132 institutional investors with active 13F positions as of June 2026.

Their combined ownership stood at 63.1% of outstanding shares in June 2026, down from 77.6% in March 2026.
They increased total shares held in QTRX by 14.68% quarter over quarter, and investors in Quanterix decreased 3.65% from a year ago.
Among the 132 funds, 81 bought more Quanterix shares, 30 sold down, and 21 held their ground.
The aggregate institutional position in Quanterix amounted to 29.74Mn shares as of June 2026, up by 3.81Mn shares quarter on quarter, and down 3.7Mn shares year over year.
BlackRock, Inc. leads ownership in QTRX with 3.64Mn shares as of June 30, 2026, equal to 7.71% of outstanding shares.
Top purchasers of QTRX stock for the quarter ending June 2026 included Lionhunter Capital Management, LLC (1.5Mn), First Eagle Investment Management, LLC (1.45Mn), Blue Water Life Science Advisors, LP (1.33Mn), AQR CAPITAL MANAGEMENT LLC (1.26Mn), JACOBS LEVY EQUITY MANAGEMENT, INC (487.6K).
Top sellers of QTRX stock for the quarter ending June 2026 included Ameriprise Financial Inc (2.55Mn), Portolan Capital Management, LLC (1.05Mn), MILLENNIUM MANAGEMENT LLC (648.5K), Russell Investments Group, Ltd. (604.26K), Royal Bank Of Canada (230.63K).
Per Business Quant data, the top 10 holders of Quanterix for the quarter ending June 2026 are BlackRock, Inc. (3.64Mn), Blue Water Life Science Advisors, LP (3.47Mn), First Eagle Investment Management, LLC (2.75Mn), Portolan Capital Management, LLC (1.9Mn), VANGUARD CAPITAL MANAGEMENT LLC (1.8Mn), Lionhunter Capital Management, LLC (1.5Mn), AQR CAPITAL MANAGEMENT LLC (1.34Mn), GEODE CAPITAL MANAGEMENT, LLC (1.13Mn), Ameriprise Financial Inc (987.42K), MARSHALL WACE, LLP (973.87K).

Form 13F Holdings

132 Institutional Holders

Report period 30 Jun, 2026

Total shares held 29.74Mn

Of outstanding 63.05%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	3,635,411	7.71%	▲357,816	+10.92%	$15.70Mn
2	Blue Water Life Science Advisors, LP	0001789778	3,474,202	7.37%	▲1,332,055	+62.18%	$15.01Mn
3	First Eagle Investment Management, LLC	0001325447	2,753,165	5.84%	▲152,991	+5.88%	$11.89Mn
4	Portolan Capital Management, LLC	0001350290	1,899,308	4.03%	▼1,046,515	-35.53%	$8.21Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,800,644	3.82%	▲16,031	+0.90%	$7.78Mn
6	Lionhunter Capital Management, LLC	0002137268	1,500,427	3.18%	▲1,500,427	0.00%	$6.48Mn
7	AQR CAPITAL MANAGEMENT LLC	0001167557	1,343,005	2.85%	▲1,258,873	+1,496.31%	$5.80Mn
8	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,131,377	2.40%	▲136,613	+13.73%	$4.89Mn
9	Ameriprise Financial Inc	0000820027	987,424	2.09%	▼2,554,950	-72.13%	$4.27Mn
10	MARSHALL WACE, LLP	0001318757	973,872	2.06%	▲351,492	+56.48%	$4.21Mn
11	State Street Corp	0000093751	932,307	1.98%	▲34,030	+3.79%	$4.03Mn
12	Tikvah Management LLC	0001606477	571,555	1.21%	▼64	-0.01%	$2.47Mn
13	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	489,566	1.04%	▼87,034	-15.09%	$2.11Mn
14	JACOBS LEVY EQUITY MANAGEMENT, INC	0000884414	487,600	1.03%	▲487,600	0.00%	$2.11Mn
15	Morgan Stanley	0000895421	447,688	0.95%	▼160,168	-26.35%	$1.93Mn
16	JANE STREET GROUP, LLC	0001595888	419,050	0.89%	▲263,395	+169.22%	$1.81Mn
17	GSA CAPITAL PARTNERS LLP	0001362033	410,252	0.87%	▲314,724	+329.46%	$1.77K
18	TUDOR INVESTMENT CORP ET AL	0000923093	400,402	0.85%	▲84,401	+26.71%	$1.73Mn
19	DIMENSIONAL FUND ADVISORS LP	0000354204	397,833	0.84%	▼45,285	-10.22%	$1.72Mn
20	Northern Trust Corp	0000073124	337,227	0.71%	▼12,431	-3.56%	$1.46Mn

Showing 1 to 20 of 132 holders