PCM
QTRX icon

Portolan Capital Management’s Quanterix QTRX Stock Holding History

Portolan Capital 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 		$10.4M Sell
2,945,823
-1,579,730
-35% -$9.22M 0.55% 56
2025
Q4 		$28.8M Buy
4,525,553
+265,702
+6% +$1.65M 1.54% 13
2025
Q3 		$23.1M Buy
4,259,851
+626,229
+17% +$3.33M 1.25% 24
2025
Q2 		$24.2M Buy
3,633,622
+670,225
+23% +$3.74M 1.52% 17
2025
Q1 		$19.3M Buy
2,963,397
+375,573
+15% +$3.13M 1.47% 24
2024
Q4 		$27.5M Buy
2,587,824
+67,138
+3% +$817K 1.85% 12
2024
Q3 		$32.7M Buy
2,520,686
+602,656
+31% +$8.05M 2.37% 8
2024
Q2 		$25.3M Buy
1,918,030
+755,201
+65% +$12.6M 2.09% 11
2024
Q1 		$27.4M Sell
1,162,829
-134,261
-10% -$3.33M 2.09% 8
2023
Q4 		$35.5M Sell
1,297,090
-378,748
-23% -$8.92M 3.1% 5
2023
Q3 		$45.5M Buy
1,675,838
+259,215
+18% +$6.42M 4.25% 2
2023
Q2 		$31.9M Buy
1,416,623
+646,884
+84% +$11.5M 2.83% 6
2023
Q1 		$8.67M Sell
769,739
-92,486
-11% -$1.18M 0.83% 37
2022
Q4 		$11.9M Buy
862,225
+103,372
+14% +$1.19M 1.18% 29
2022
Q3 		$8.36M Buy
758,853
+376,978
+99% +$4.79M 0.88% 34
2022
Q2 		$6.18M Buy
+381,875
New +$7.85M 0.62% 61
2021
Q1 		– Sell
-38,957
Closed -$1.81M – 176
2020
Q4 		$1.81M Sell
38,957
-8,943
-19% -$390K 0.16% 129
2020
Q3 		$1.62M Sell
47,900
-100,819
-68% -$3.25M 0.18% 119
2020
Q2 		$4.07M Sell
148,719
-196,281
-57% -$4.96M 0.47% 82
2020
Q1 		$6.34M Sell
345,000
-26,337
-7% -$601K 0.95% 36
2019
Q4 		$8.78M Buy
371,337
+261,086
+237% +$5.96M 0.89% 45
2019
Q3 		$2.42M Buy
+110,251
New +$3.08M 0.27% 75
2018
Q4 		– Sell
-226,891
Closed -$4.86M – 98
2018
Q3 		$4.86M Buy
+226,891
New +$3.59M 0.48% 60

Other funds holding QTRX

Ameriprise
Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
BWLSA
Blue Water Life Science Advisors Larkspur, California $125M AUM 91.82% 1-Year Est. Return
William Blair Investment Management
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
First Eagle Investment Management New York $59B AUM 32.99% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
TC
Trium Capital London, United Kingdom $163M AUM 45.8% 1-Year Est. Return

Portolan Capital Management's QTRX Position: Q1 2026 in Review

Portolan Capital Management reduced its Quanterix (QTRX) stake by 35% in Q1 2026, selling an estimated $9.22M and leaving 2,945,823 shares worth $10.4M. The position accounts for 0.55% of the portfolio, ranked #56.

Portolan Capital Management first reported a position in QTRX in Q3 2018 and has held it in 23 quarters since. The position peaked at $45.5M in Q3 2023. 128 funds tracked by Wall St. Rank hold QTRX as of Q1 2026.

  • Portolan Capital Management held 2,945,823 shares of Quanterix worth $10.4M as of Q1 2026.
  • Portolan Capital Management sold 1,579,730 Quanterix shares in Q1 2026, an estimated $9.22M.
  • Quanterix made up 0.55% of Portolan Capital Management's portfolio in Q1 2026, its #56 holding.
  • Portolan Capital Management first reported a position in Quanterix in Q3 2018 and has held it in 23 quarters since.
  • Portolan Capital Management's Quanterix position peaked at $45.5M in Q3 2023.
  • 128 funds tracked by Wall St. Rank held Quanterix as of Q1 2026.

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