Ironwood Investment Management’s Quanterix QTRX Stock Holding History

Ironwood Investment Management’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	$598K	Sell	169,825 -2,505	-1%	-$14.6K	0.25%	107
2025 Q4	$1.1M	Sell	172,330 -21,744	-11%	-$135K	0.46%	68
2025 Q3	$1.05M	Buy	194,074 +172,777	+811%	+$919K	0.46%	72
2025 Q2	$142K	Buy	+21,297	New	+$119K	0.07%	157
2023 Q3	–	Sell	-11,301	Closed	-$255K	–	169
2023 Q2	$255K	Hold	11,301	–	–	0.15%	134
2023 Q1	$127K	Hold	11,301	–	–	0.08%	151
2022 Q4	$157K	Sell	11,301 -52	-0.5%	-$598	0.1%	151
2022 Q3	$125K	Buy	+11,353	New	+$144K	0.09%	155

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 $1.49B AUM 30.44% 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

Ironwood Investment Management's QTRX Position: Q1 2026 in Review

Ironwood Investment Management reduced its Quanterix (QTRX) stake by 1.5% in Q1 2026, selling an estimated $14.6K and leaving 169,825 shares worth $598K. The position accounts for 0.25% of the portfolio, ranked #107.

Ironwood Investment Management first reported a position in QTRX in Q3 2022 and has held it in 8 quarters since. The position peaked at $1.1M in Q4 2025. 128 funds tracked by Wall St. Rank hold QTRX as of Q1 2026.

Ironwood Investment Management held 169,825 shares of Quanterix worth $598K as of Q1 2026.
Ironwood Investment Management sold 2,505 Quanterix shares in Q1 2026, an estimated $14.6K.
Quanterix made up 0.25% of Ironwood Investment Management's portfolio in Q1 2026, its #107 holding.
Ironwood Investment Management first reported a position in Quanterix in Q3 2022 and has held it in 8 quarters since.
Ironwood Investment Management's Quanterix position peaked at $1.1M in Q4 2025.
128 funds tracked by Wall St. Rank held Quanterix as of Q1 2026.

Based on Ironwood Investment Management's 13F filing for Q1 2026, filed 15 May 2026.