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 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

Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

PCM

Portolan Capital Management Boston, Massachusetts $1.88B AUM 115.74% 1-Year Est. Return

BWLSA

Blue Water Life Science Advisors Larkspur, California $125M AUM 91.82% 1-Year Est. Return

William Blair Investment Management Chicago, Illinois $30.3B AUM 33.75% 1-Year Est. Return

ICM

Invenomic Capital Management Boston, Massachusetts $2.18B AUM 0.03% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

LCS

Levin Capital Strategies New York $1.32B AUM 28.11% 1-Year Est. Return

First Eagle Investment Management New York $59B AUM 32.99% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Group One Trading's QTRX Position: Q1 2026 in Review

Group One Trading opened a new position in Quanterix (QTRX) in Q1 2026: 872 shares worth $3.07K. The stake represents ﹤0.01% of the portfolio and ranks #6915 among its holdings. This is a return to the name: Group One Trading previously reported a position in QTRX as recently as Q3 2025.

Group One Trading first reported a position in QTRX in Q4 2021 and has held it in 5 quarters since. The position peaked at $3.85M in Q4 2022. 128 funds tracked by Wall St. Rank hold QTRX as of Q1 2026.

Group One Trading held 872 shares of Quanterix worth $3.07K as of Q1 2026.
Quanterix was a new Group One Trading position in Q1 2026.
Quanterix made up ﹤0.01% of Group One Trading's portfolio in Q1 2026, its #6915 holding.
Group One Trading first reported a position in Quanterix in Q4 2021 and has held it in 5 quarters since.
Group One Trading's Quanterix position peaked at $3.85M in Q4 2022.
128 funds tracked by Wall St. Rank held Quanterix as of Q1 2026.

Based on Group One Trading's 13F filing for Q1 2026, filed 13 May 2026.