XTX Topco’s Quanterix QTRX Stock Holding History

XTX Topco’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	$985K	Buy	228,035 +116,375	+104%	+$377K	0.01%	1804
2026 Q1	$393K	Buy	111,660 +37,567	+51%	+$219K	0.01%	2245
2025 Q4	$471K	Buy	74,093 +62,783	+555%	+$390K	0.01%	1658
2025 Q3	$61.4K	Sell	11,310 -44,714	-80%	-$238K	﹤0.01%	2130
2025 Q2	$373K	Buy	56,024 +33,007	+143%	+$184K	0.02%	1299
2025 Q1	$150K	Buy	23,017 +7,595	+49%	+$63.4K	0.01%	1766
2024 Q4	$164K	Buy	+15,422	New	+$188K	0.01%	1629
2024 Q3	–	Sell	-23,233	Closed	-$307K	–	2501
2024 Q2	$307K	Buy	+23,233	New	+$388K	0.03%	946
2023 Q4	–	Sell	-15,919	Closed	-$432K	–	2030
2023 Q3	$432K	Buy	+15,919	New	+$394K	0.07%	484
2023 Q2	–	Sell	-27,682	Closed	-$312K	–	1757
2023 Q1	$312K	Buy	+27,682	New	+$354K	0.07%	614

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

XTX Topco's QTRX Position: Q2 2026 in Review

XTX Topco increased its Quanterix (QTRX) stake by 104% in Q2 2026, buying an estimated $377K and bringing the position to 228,035 shares worth $985K. The position accounts for 0.01% of the portfolio, ranked #1804.

XTX Topco first reported a position in QTRX in Q1 2023 and has held it in 10 quarters since. 133 funds tracked by Wall St. Rank hold QTRX as of Q2 2026.

XTX Topco held 228,035 shares of Quanterix worth $985K as of Q2 2026.
XTX Topco bought 116,375 Quanterix shares in Q2 2026, an estimated $377K.
Quanterix made up 0.01% of XTX Topco's portfolio in Q2 2026, its #1804 holding.
XTX Topco first reported a position in Quanterix in Q1 2023 and has held it in 10 quarters since.
133 funds tracked by Wall St. Rank held Quanterix as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.