Quanterix Corp QTRX
CIK 0001503274 · CUSIP 74766Q101
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | Portolan Capital Management, LLC CIK 1350290 · View history | $23.13M 4,259,851 shares | 1.25% | +626.23K(+17.20%)Added | SEC filing ↗ Nov 13, 2025 | ▾ |
| 02 | AMERIPRISE FINANCIAL INC CIK 820027 · View history | $23.04M 4,243,512 shares | 0.01% | +6.63K(+0.20%)Added | SEC filing ↗ Nov 14, 2025 | ▾ |
| 03 | BlackRock, Inc. CIK 2012383 · View history | $16.90M 3,112,980 shares | 0.00% | +188.28K(+6.40%)Added | SEC filing ↗ Nov 12, 2025 | ▾ |
| 04 | VANGUARD GROUP INC CIK 102909 · View history | $14.38M 2,647,515 shares | 0.00% | +118.56K(+4.70%)Added | SEC filing ↗ Nov 7, 2025 | ▾ |
| 05 | Invenomic Capital Management LP CIK 1769456 · View history | $7.56M 1,393,005 shares | 0.40% | +248.10K(+21.70%)Added | SEC filing ↗ Nov 14, 2025 | ▾ |
| 06 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC CIK 1644956 · View history | $7.14M 1,315,280 shares | 0.02% | +187.30K(+16.60%)Added | SEC filing ↗ Nov 12, 2025 | ▾ |
| 07 | EASTERLY INVESTMENT PARTNERS LLC CIK 1766150 · View history | $6.80M 1,252,184 shares | 0.46% | +168.55K(+15.60%)Added | SEC filing ↗ Nov 12, 2025 | ▾ |
| 08 | MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history | $6.57M 1,209,199 shares | 0.01% | +1.20M(+9,880.20%)Added | SEC filing ↗ Nov 14, 2025 | ▾ |
| 09 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $5.50M 1,011,890 shares | 0.00% | +124.81K(+14.10%)Added | SEC filing ↗ Nov 12, 2025 | ▾ |
| 10 | Kent Lake PR LLC CIK 2037231 · View history | $5.44M 1,001,000 shares | 2.78% | -1.30M(-56.50%)Reduced | SEC filing ↗ Nov 14, 2025 | ▾ |
| 11 | Blue Water Life Science Advisors, LP CIK 1789778 · View history | $5.20M 957,747 shares | 4.74% | 0(0.00%)Unchanged | SEC filing ↗ Nov 14, 2025 | ▾ |
| 12 | STATE STREET CORP CIK 93751 · View history | $4.45M 819,534 shares | 0.00% | +54.68K(+7.10%)Added | SEC filing ↗ Nov 14, 2025 | ▾ |
| 13 | MORGAN STANLEY CIK 895421 · Amended · View history | $4.38M 806,263 shares | 0.00% | +34.82K(+4.50%)Added | SEC filing ↗ May 27, 2026 | ▾ |
| 14 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $3.84M 707,071 shares | 0.00% | -96.66K(-12.00%)Reduced | SEC filing ↗ Nov 12, 2025 | ▾ |
| 15 | Trium Capital LLP CIK 1963860 · View history | $3.74M 688,597 shares | 1.47% | +102.17K(+17.40%)Added | SEC filing ↗ Oct 16, 2025 | ▾ |
| 16 | Williams Jones Wealth Management, LLC. CIK 1788587 · View history | $3.73M 686,464 shares | 0.04% | +10.45K(+1.50%)Added | SEC filing ↗ Nov 14, 2025 | ▾ |
| 17 | MARSHALL WACE, LLP CIK 1318757 · View history | $3.31M 608,708 shares | 0.00% | +164.52K(+37.00%)Added | SEC filing ↗ Nov 13, 2025 | ▾ |
| 18 | Tikvah Management LLC CIK 1606477 · View history | $3.10M 571,619 shares | 0.92% | 0(0.00%)Unchanged | SEC filing ↗ Nov 14, 2025 | ▾ |
| 19 | Aberdeen Group plc CIK 1716774 · View history | $3.07M 564,581 shares | 0.00% | +143.72K(+34.20%)Added | SEC filing ↗ Nov 7, 2025 | ▾ |
| 20 | ENVESTNET ASSET MANAGEMENT INC CIK 1407543 · View history | $2.80M 515,861 shares | 0.00% | +284.26K(+122.70%)Added | SEC filing ↗ Nov 5, 2025 | ▾ |
Showing 20 / 129 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 129 reporting institutions.
This page includes 20 of 129 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
＋ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 129 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.
MCP https://api.akkrudata.ai/mcp
akkru_institutional_holdings
{"action":"holders","cusip":"74766Q101","quarter":"2025Q3","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP / CLI documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.