QUANTERIX CORP (QTRX) Institutional Ownership and Insiders Activity

QUANTERIX CORP (QTRX) is widely held by institutional investors, with 126 firms reporting positions valued at approximately $120.45M based on SEC Form 13F filings for the quarter ended June 30, 2026.

Blackrock, Inc. is the largest disclosed holder, reporting approximately $15.70M in QTRX holdings in its latest filing.

Recent insider activity includes 41 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.