Quanterix Ownership | Who Owns Quanterix?

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Quanterix Ownership Summary

Quanterix is owned by 89.59% institutional investors, 6.55% insiders, and 3.86% retail investors. Ameriprise financial is the largest institutional shareholder, holding 8.34% of QTRX shares. CT (Lux) American Smaller Com 9U USD is the top mutual fund, with 4.47% of its assets in Quanterix shares.

QTRX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Quanterix	89.59%	6.55%	3.86%
Sector	Healthcare Stocks	57.39%	9.93%	32.68%
Industry	Medical Device Stocks	40.18%	9.93%	49.89%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Ameriprise financial	3.21M	8.34%	$34.08M
Blackrock funding, inc. /de	3.16M	8.23%	$33.64M
Blackrock	3.14M	8.23%	$41.45M
Portolan capital management	2.59M	6.73%	$27.51M
Alliancebernstein	2.44M	6.35%	$25.94M
Vanguard group	2.22M	5.77%	$23.57M
Millennium management	2.19M	5.68%	$23.23M
William blair investment management	1.06M	2.76%	$11.29M
Easterly investment partners	955.00K	2.48%	$10.15M
Ubs group	934.55K	2.43%	$9.93M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Pura vida investments	234.75K	7.89%	$2.50M
Portolan capital management	2.59M	1.85%	$27.51M
Tikvah management	571.62K	1.66%	$6.08M
Ashford capital management	771.30K	1.38%	$10.19M
Bridger management	185.09K	1.06%	$1.97M
Pier capital	679.68K	1.03%	$7.22M
Easterly investment partners	955.00K	0.80%	$10.15M
Blue water life science advisors, lp	78.39K	0.74%	$833.32K
Kent lake capital	75.00K	0.45%	$990.75K
Kingdon capital management	200.00K	0.30%	$2.13M

Top Buyers

Holder	Shares	% Assets	Change
Ameriprise financial	3.21M	0.01%	1.69M
William blair investment management	1.06M	0.03%	1.06M
Ubs group	934.55K	0.00%	913.39K
Eventide asset management	615.00K	0.12%	615.00K
Pier capital	679.68K	1.03%	167.88K

Top Sellers

Holder	Shares	% Assets	Change
Lord, abbett	-	-	-1.76M
Alliancebernstein	2.44M	0.01%	-825.80K
Granahan investment management	536.42K	0.24%	-566.21K
Emerald advisers	278.39K	0.11%	-440.82K
Gilder gagnon howe	68.66K	0.01%	-403.62K

New Positions

Holder	Shares	% Assets	Change	Value
William blair investment management	1.06M	0.03%	1.06M	$11.29M
Eventide asset management	615.00K	0.12%	615.00K	$6.54M
Graypoint	65.00K	0.04%	65.00K	$690.95K
F/m investments	59.92K	0.02%	59.92K	$636.97K
Two sigma investments, lp	56.96K	0.00%	56.96K	$605.51K

Sold Out

Holder	Change
True wealth design	-12.00
Manchester capital management	-23.00
Innealta capital	-26.00
Allworth financial lp	-27.00
National bank of canada /fi/	-33.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2024	156	3.31%	34,445,404	3.64%	89	1.20%	83	20.29%	43	-17.31%
Sep 30, 2024	149	-4.49%	33,225,425	2.54%	86	1.20%	67	-14.10%	52	8.33%
Jun 30, 2024	155	-6.63%	32,401,996	0.36%	84	1.17%	78	-1.27%	47	-16.07%
Mar 31, 2024	166	-6.21%	32,285,203	2.15%	85	1.21%	79	-8.14%	56	-3.45%
Dec 31, 2023	177	7.27%	31,606,543	-2.34%	83	1.13%	86	-	58	16.00%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
CT (Lux) American Smaller Com 9U USD	1.74M	4.47%	22.61K
Strategic Advisers U.S. Total Stock	1.64M	4.23%	-
Strategic Advisers U.S. Total Stock{mg}	1.45M	3.79%	91.44K
Strategic Advisers Small-Mid Cap	1.30M	3.39%	283.56K
CT American Smaller Coms(US) InstAccGBP	1.20M	3.10%	-
Vanguard Total Stock Mkt Idx Inv	1.15M	2.98%	-
Vanguard US Total Market Shares ETF	1.15M	2.96%	-
AB Small Cap Growth A	1.26M	2.53%	-30.56K
iShares Russell 2000 ETF	944.56K	2.44%	-8.20K
Eventide Healthcare & Life Sciences I	615.00K	1.59%	615.00K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Aug 20, 2024	WALT DAVID R	-	Buy	$624.63K
Aug 13, 2024	Toloue Masoud	President & CEO	Buy	$207.10K
May 14, 2024	OLSON LAURIE J	-	Sell	$25.47K
Apr 01, 2024	OLSON LAURIE J	-	Sell	$23.50K
Feb 14, 2024	OLSON LAURIE J	-	Sell	$36.52K

Insider Transactions Trends

Date	Buy	Sell
2025 Q2	-	-
2025 Q1	-	-
2024 Q4	-	-
2024 Q3	2	-
2024 Q2	-	2

QTRX Ownership FAQ

Who Owns Quanterix?

Quanterix shareholders are primarily institutional investors at 89.59%, followed by 6.55% insiders and 3.86% retail investors. The average institutional ownership in Quanterix's industry, Medical Device Stocks, is 40.18%, which Quanterix exceeds.

Who owns the most shares of Quanterix?

Quanterix’s largest shareholders are Ameriprise financial (3.21M shares, 8.34%), Blackrock funding, inc. /de (3.16M shares, 8.23%), and Blackrock (3.14M shares, 8.23%). Together, they hold 24.80% of Quanterix’s total shares outstanding.

Does Blackrock own Quanterix?

Yes, BlackRock owns 8.23% of Quanterix, totaling 3.14M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 41.45M$. In the last quarter, BlackRock increased its holdings by 14.95K shares, a 0.48% change.

Who is Quanterix’s biggest shareholder by percentage of total assets invested?

Pura vida investments is Quanterix’s biggest shareholder by percentage of total assets invested, with 7.89% of its assets in 234.76K Quanterix shares, valued at 2.5M$.

Who is the top mutual fund holder of Quanterix shares?

CT (Lux) American Smaller Com 9U USD is the top mutual fund holder of Quanterix shares, with 4.47% of its total shares outstanding invested in 1.74M Quanterix shares.

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