Michael Gelband’s Quanterix QTRX Stock Holding History

Michael Gelband’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	–	Sell	-24,080	Closed	-$153K	–	1999
2025 Q4	$153K	Buy	+24,080	New	+$150K	﹤0.01%	1412
2025 Q2	–	Sell	-195,920	Closed	-$1.27M	–	1892
2025 Q1	$1.27M	Buy	195,920 +173,080	+758%	+$1.44M	0.01%	855
2024 Q4	$243K	Sell	22,840 -92,834	-80%	-$1.13M	﹤0.01%	1329
2024 Q3	$1.5M	Buy	+115,674	New	+$1.55M	0.01%	840
2024 Q1	–	Sell	-159,148	Closed	-$4.35M	–	1880
2023 Q4	$4.35M	Buy	+159,148	New	+$3.75M	0.03%	376
2022 Q4	–	Sell	-48,928	Closed	-$539K	–	2039
2022 Q3	$539K	Buy	48,928 +36,965	+309%	+$470K	0.01%	1350
2022 Q2	$194K	Buy	+11,963	New	+$246K	﹤0.01%	1665
2021 Q1	–	Sell	-44,913	Closed	-$2.09M	–	2513
2020 Q4	$2.09M	Buy	+44,913	New	+$1.96M	0.02%	529
2020 Q1	–	Sell	-11,600	Closed	-$274K	–	1538
2019 Q4	$274K	Buy	+11,600	New	+$265K	0.01%	1189

Other funds holding QTRX

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

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

PCM

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

BWLSA

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

William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return

ICM

Invenomic Capital Management Boston, Massachusetts $1.67B AUM 1.43% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

LCS

Levin Capital Strategies New York $1.49B AUM 30.44% 1-Year Est. Return

First Eagle Investment Management New York $59.9B AUM 27.01% 1-Year Est. Return

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

Michael Gelband's QTRX Position: Q1 2026 in Review

Michael Gelband sold out of Quanterix (QTRX) in Q1 2026, closing a stake of 24,080 shares — an estimated $153K sold.

Michael Gelband first reported a position in QTRX in Q4 2019 and held it in 9 quarters. The position peaked at $4.35M in Q4 2023. 128 funds tracked by Wall St. Rank hold QTRX as of Q1 2026.

Michael Gelband reported no remaining Quanterix position as of Q1 2026 after selling out during the quarter.
Michael Gelband sold 24,080 Quanterix shares in Q1 2026, an estimated $153K.
Michael Gelband first reported a position in Quanterix in Q4 2019 and held it in 9 quarters.
Michael Gelband's Quanterix position peaked at $4.35M in Q4 2023.
128 funds tracked by Wall St. Rank held Quanterix as of Q1 2026.

Based on ExodusPoint Capital Management's 13F filing for Q1 2026, filed 14 May 2026.