R Squared’s Quanterix QTRX Stock Holding History

R Squared’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
2025 Q4	–	Sell	-11,771	Closed	-$63.9K	–	679
2025 Q3	$63.9K	Buy	+11,771	New	+$62.6K	0.03%	470
2025 Q1	–	Sell	-460	Closed	-$4.89K	–	1202
2024 Q4	$4.89K	Buy	+460	New	+$5.59K	﹤0.01%	1316

Other funds holding QTRX

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

PCM

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

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

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 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

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

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

R Squared's QTRX Position: Q4 2025 in Review

R Squared sold out of Quanterix (QTRX) in Q4 2025, closing a stake of 11,771 shares — an estimated $63.9K sold.

R Squared first reported a position in QTRX in Q4 2024 and held it in 2 quarters. The position peaked at $63.9K in Q3 2025. 134 funds tracked by Wall St. Rank hold QTRX as of Q4 2025.

R Squared reported no remaining Quanterix position as of Q4 2025 after selling out during the quarter.
R Squared sold 11,771 Quanterix shares in Q4 2025, an estimated $63.9K.
R Squared first reported a position in Quanterix in Q4 2024 and held it in 2 quarters.
R Squared's Quanterix position peaked at $63.9K in Q3 2025.
134 funds tracked by Wall St. Rank held Quanterix as of Q4 2025.

Based on R Squared's 13F filing for Q4 2025, filed 30 Jan 2026.