Portolan Capital Management, LLC Quanterix Corp Transaction History

Portolan Capital Management, LLC

$1.38 Billion
Q2 2025

A detailed history of Portolan Capital Management, LLC transactions in Quanterix Corp stock. As of the latest transaction made, Portolan Capital Management, LLC holds 3,633,622 shares of QTRX stock, worth $17.3 Million. This represents 1.75% of its overall portfolio holdings.

Number of Shares

3,633,622

Previous 2,963,397 22.62%

Holding current value

$17.3 Million

Previous $19.3 Million 25.26%

% of portfolio

1.75%

Previous 1.58%

22 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q2 2025 Aug 13, 2025	BUY	$4.28 - $6.72 $2.87 Million - $4.5 Million	670,225 Added 22.62%	3,633,622 $24.2 Million
Q1 2025 May 15, 2025	BUY	$6.51 - $12.08 $2.44 Million - $4.54 Million	375,573 Added 14.51%	2,963,397 $19.3 Million
Q4 2024 Feb 13, 2025	BUY	$9.99 - $15.39 $670,708 - $1.03 Million	67,138 Added 2.66%	2,587,824 $27.5 Million
Q3 2024 Nov 14, 2024	BUY	$10.92 - $16.36 $6.58 Million - $9.86 Million	602,656 Added 31.42%	2,520,686 $32.6 Million
Q2 2024 Aug 14, 2024	BUY	$12.26 - $23.78 $9.26 Million - $18 Million	755,201 Added 64.95%	1,918,030 $25.3 Million
Q1 2024 May 15, 2024	SELL	$21.9 - $28.28 $2.94 Million - $3.8 Million	-134,261 Reduced 10.35%	1,162,829 $27.4 Million
Q4 2023 Feb 14, 2024	SELL	$19.54 - $28.66 $7.4 Million - $10.9 Million	-378,748 Reduced 22.6%	1,297,090 $35.5 Million
Q3 2023 Nov 14, 2023	BUY	$21.15 - $27.96 $5.48 Million - $7.25 Million	259,215 Added 18.3%	1,675,838 $45.5 Million
Q2 2023 Aug 14, 2023	BUY	$11.16 - $23.65 $7.22 Million - $15.3 Million	646,884 Added 84.04%	1,416,623 $31.9 Million
Q1 2023 May 15, 2023	SELL	$10.12 - $14.91 $935,958 - $1.38 Million	-92,486 Reduced 10.73%	769,739 $8.67 Million
Q4 2022 Feb 13, 2023	BUY	$8.75 - $14.02 $904,505 - $1.45 Million	103,372 Added 13.62%	862,225 $11.9 Million
Q3 2022 Nov 14, 2022	BUY	$7.46 - $19.28 $2.81 Million - $7.27 Million	376,978 Added 98.72%	758,853 $8.36 Million
Q2 2022 Aug 15, 2022	BUY	$15.06 - $30.65 $5.75 Million - $11.7 Million	381,875 New	381,875 $6.18 Million
Q1 2021 May 17, 2021	SELL	$44.11 - $90.64 $1.72 Million - $3.53 Million	-38,957 Closed	0 $0
Q4 2020 Feb 16, 2021	SELL	$33.89 - $49.88 $303,078 - $446,076	-8,943 Reduced 18.67%	38,957 $1.81 Million
Q3 2020 Nov 16, 2020	SELL	$26.91 - $37.47 $2.71 Million - $3.78 Million	-100,819 Reduced 67.79%	47,900 $1.62 Million
Q2 2020 Aug 14, 2020	SELL	$19.21 - $28.53 $3.77 Million - $5.6 Million	-196,281 Reduced 56.89%	148,719 $4.07 Million
Q1 2020 May 14, 2020	SELL	$11.17 - $28.72 $294,184 - $756,398	-26,337 Reduced 7.09%	345,000 $6.34 Million
Q4 2019 Feb 14, 2020	BUY	$19.29 - $25.52 $5.04 Million - $6.66 Million	261,086 Added 236.81%	371,337 $8.78 Million
Q3 2019 Nov 14, 2019	BUY	$21.72 - $35.38 $2.39 Million - $3.9 Million	110,251 New	110,251 $2.42 Million
Q4 2018 Feb 13, 2019	SELL	$16.17 - $20.8 $3.67 Million - $4.72 Million	-226,891 Closed	0 $0
Q3 2018 Nov 14, 2018	BUY	$13.39 - $22.35 $3.04 Million - $5.07 Million	226,891 New	226,891 $4.86 Million

Others Institutions Holding QTRX

# of Institutions

146

Shares Held

35.5M

Call Options Held

Put Options Held

View Full List

About Quanterix Corp

Ticker QTRX
Exchange NASDAQ
Sector Healthcare
Industry Medical Devices
Shares Outstandng 36,987,600
Market Cap $176M
Description
Quanterix Corporation, a life sciences company, engages in development and marketing of digital immunoassay platforms that advances precision health for life sciences research and diagnostics in North America, Europe, the Middle East, Africa, and the Asia Pacific regions. It offers HD-X instrument, a sensitive automated multiplex protein detecti...

More about QTRX

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Portolan Capital Management, LLC Quanterix Corp Transaction History