Who owns Quanterix Corp?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of QTRX from SEC Form 13F filings across 132 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 132 institutions disclosed 29.4M shares of Quanterix Corp worth $127.1M — about 62.4% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
132
13F holders
$127.1M
value, 2026 filers
62.4%
of shares outstanding (29.4M sh)
37
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of QTRX's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 3.6M | $15.7M | 0.0% | 7.7% | +10.9% |
| 2 | Blue Water Life Science Advisors, LP | 3.5M | $15.0M | 9.5% | 7.4% | +62.2% |
| 3 | First Eagle Investment Management, LLC | 2.8M | $11.9M | 0.0% | 5.8% | +111.8% |
| 4 | Portolan Capital Management, LLC | 1.9M | $8.2M | 0.3% | 4% | -35.5% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 1.8M | $7.8M | 0.0% | 3.8% | +0.9% |
| 6 | Lionhunter Capital Management, LLCNEW | 1.5M | $6.5M | 2.9% | 3.2% | new |
| 7 | AQR CAPITAL MANAGEMENT LLC | 1.3M | $5.8M | 0.0% | 2.8% | +1496.3% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 1.1M | $4.9M | 0.0% | 2.4% | +13.7% |
| 9 | AMERIPRISE FINANCIAL INC | 987,424 | $4.3M | 0.0% | 2.1% | -72.1% |
| 10 | MARSHALL WACE, LLP | 973,872 | $4.2M | 0.0% | 2.1% | +56.5% |
| 11 | STATE STREET CORP | 932,307 | $4.0M | 0.0% | 2% | +3.8% |
| 12 | Tikvah Management LLC | 571,555 | $2.5M | 0.8% | 1.2% | 0.0% |
| 13 | VANGUARD PORTFOLIO MANAGEMENT LLC | 489,566 | $2.1M | 0.0% | 1% | -15.1% |
| 14 | JACOBS LEVY EQUITY MANAGEMENT, INCNEW | 487,600 | $2.1M | 0.0% | 1% | new |
| 15 | MORGAN STANLEY | 447,688 | $1.9M | 0.0% | 0.9% | -26.3% |
| 16 | JANE STREET GROUP, LLC | 419,050 | $1.8M | 0.0% | 0.9% | +169.2% |
| 17 | GSA CAPITAL PARTNERS LLP | 410,252 | $1.8M | 0.1% | 0.9% | +329.5% |
| 18 | TUDOR INVESTMENT CORP ET AL | 400,402 | $1.7M | 0.0% | 0.8% | +26.7% |
| 19 | DIMENSIONAL FUND ADVISORS LP | 397,833 | $1.7M | 0.0% | 0.8% | -10.2% |
| 20 | NORTHERN TRUST CORP | 337,227 | $1.5M | 0.0% | 0.7% | -3.6% |
| 21 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 310,701 | $1.3M | 0.0% | 0.7% | -10.2% |
| 22 | VANGUARD FIDUCIARY TRUST CO | 288,311 | $1.2M | 0.0% | 0.6% | +6.6% |
| 23 | UBS Group AG | 281,978 | $1.2M | 0.0% | 0.6% | -25.2% |
| 24 | Nuveen, LLC | 232,592 | $1.0M | 0.0% | 0.5% | +223.8% |
| 25 | CITADEL ADVISORS LLC | 229,736 | $992,460 | 0.0% | 0.5% | +276.6% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.