Group One Trading’s Quanterix QTRX Stock Holding History

Group One Trading’s Portfolio QTRX Stock Details QTRX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	–	Sell	-1,000	Closed	-$3.52K	–	8311
2026 Q1	$3.52K	Buy	+1,000	New	+$5.84K	﹤0.01%	6856
2025 Q4	–	Sell	-1,800	Closed	-$9.77K	–	8976
2025 Q3	$9.77K	Buy	1,800 +1,500	+500%	+$7.98K	﹤0.01%	7185
2025 Q2	$2K	Buy	+300	New	+$1.67K	﹤0.01%	7414
2024 Q2	–	Sell	-600	Closed	-$14.1K	–	7346
2024 Q1	$14.1K	Sell	600 -100	-14%	-$2.48K	﹤0.01%	5661
2023 Q4	$19.1K	Buy	700 +600	+600%	+$14.1K	﹤0.01%	5779
2023 Q3	$2.71K	Sell	100 -7,500	-99%	-$186K	﹤0.01%	6952
2023 Q2	$171K	Buy	+7,600	New	+$135K	﹤0.01%	4104
2022 Q1	–	Sell	-100	Closed	-$4K	–	8559
2021 Q4	$4K	Hold	100	–	–	﹤0.01%	7718
2021 Q3	$5K	Hold	100	–	–	﹤0.01%	7751
2021 Q2	$6K	Buy	+100	New	+$5.8K	﹤0.01%	7710

Other funds holding QTRX

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

BWLSA

Blue Water Life Science Advisors Larkspur, California $159M AUM 139.66% 1-Year Est. Return

First Eagle Investment Management New York $60.8B AUM 26.63% 1-Year Est. Return

PCM

Portolan Capital Management Boston, Massachusetts $2.67B AUM 169.09% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

LCM

Lionhunter Capital Management New York $222M AUM

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return

Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return

Group One Trading's QTRX Position: Q2 2026 in Review

Group One Trading increased its Quanterix (QTRX) stake by 122% in Q2 2026, buying an estimated $3.44K and bringing the position to 1,933 shares worth $8.35K. The position accounts for ﹤0.01% of the portfolio, ranked #6510.

Group One Trading first reported a position in QTRX in Q4 2021 and has held it in 6 quarters since. The position peaked at $3.85M in Q4 2022. 133 funds tracked by Wall St. Rank hold QTRX as of Q2 2026.

Group One Trading held 1,933 shares of Quanterix worth $8.35K as of Q2 2026.
Group One Trading bought 1,061 Quanterix shares in Q2 2026, an estimated $3.44K.
Quanterix made up ﹤0.01% of Group One Trading's portfolio in Q2 2026, its #6510 holding.
Group One Trading first reported a position in Quanterix in Q4 2021 and has held it in 6 quarters since.
Group One Trading's Quanterix position peaked at $3.85M in Q4 2022.
133 funds tracked by Wall St. Rank held Quanterix as of Q2 2026.

Based on Group One Trading's 13F filing for Q2 2026, filed 14 Aug 2026.