Skip to main content

Portolan Capital Management, LLC

Position in QTRX — Quanterix Corp

CIK 1350290 BOSTON, MA

Position in QTRX

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$10,369,296
-$18,413,221 QoQ
Shares Held
2,945,823
-34.9% QoQ
Ownership
6.25%
of shares outstanding
% of Portfolio
0.56%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
20 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in QTRX Over Time

Shares Held

Position Value (USD)

Position in Medical Devices

Healthcare · as of Mar 31, 2026

Portolan Capital Management, LLC holds $22,221,484 across 5 Medical Devices names. QTRX ranks #1 (46.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 QTRX
Quanterix Corp
This page
2,945,823 $10,369,296

All Filings in QTRX

Export CSV
22 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $10,369,296 2,945,823
2025-12-31 $28,782,517 4,525,553
2025-09-30 $23,130,990 4,259,851
2025-06-30 $24,163,586 3,633,622
2025-06-30 $24,163,586 3,633,622
2025-03-31 $19,291,714 2,963,397
2025-03-31 $19,291,714 2,963,397
2024-12-31 $27,508,569 2,587,824
2024-09-30 $32,668,090 2,520,686
2024-06-30 $25,337,176 1,918,030
2024-03-31 $27,396,251 1,162,829
2023-12-31 $35,462,440 1,297,090
2023-09-30 $45,482,243 1,675,838
2023-06-30 $31,944,848 1,416,623
2023-03-31 $8,674,958 769,739
2022-12-31 $11,941,816 862,225
2022-09-30 $8,362,560 758,853
2022-06-30 $6,182,556 381,875
2020-12-31 $1,811,500 38,957
2020-09-30 $1,616,146 47,900
2020-06-30 $4,073,413 148,719
2020-03-31 $6,337,650 345,000