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WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

Position in QTRX — Quanterix Corp

CIK 1644956 CHICAGO, IL

Position in QTRX

as of Mar 31, 2026 · filed May 8, 2026
Position Value
$7,334,620
-$5,680,795 QoQ
Shares Held
2,083,699
+1.8% QoQ
Ownership
4.42%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Dec 2024
6 quarters on record
Voting authority Sole 76% Shared 0% None 24%

Common Shares in QTRX Over Time

Shares Held

Position Value (USD)

Position in Medical Devices

Healthcare · as of Mar 31, 2026

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $478,918,515 across 11 Medical Devices names. QTRX ranks #9 (1.5% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in QTRX

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6 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $7,334,620 2,083,699
2025-12-31 $13,015,415 2,046,449
2025-09-30 $7,141,970 1,315,280
2025-06-30 $7,501,073 1,127,981
2025-03-31 $7,200,470 1,106,063
2024-12-31 $11,290,176 1,062,105