Company · Ownership research

Quanterix Corp QTRX

CIK 0001503274 · CUSIP 74766Q101

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 74766Q101 (QTRX), not CUSIP 74766Q951 (QTRX), CUSIP 74766Q901 (QTRX), and does not merge CUSIPs.

This page lists the top 20 of 153 rows by value; the complete set is available through the API.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	AMERIPRISE FINANCIAL INC CIK 820027 · View history	$34.08M 3,205,928 shares	0.01%	+1.69M(+111.30%)Added	SEC filing ↗ Feb 14, 2025	▾
02	BlackRock, Inc. CIK 2012383 · View history	$33.64M 3,164,221 shares	0.00%	-46.70K(-1.50%)Reduced	SEC filing ↗ Feb 7, 2025	▾
03	Portolan Capital Management, LLC CIK 1350290 · View history	$27.51M 2,587,824 shares	1.85%	+67.14K(+2.70%)Added	SEC filing ↗ Feb 13, 2025	▾
04	ALLIANCEBERNSTEIN L.P. CIK 1109448 · View history	$25.94M 2,439,805 shares	0.01%	-825.80K(-25.30%)Reduced	SEC filing ↗ Feb 12, 2025	▾
05	VANGUARD GROUP INC CIK 102909 · View history	$23.57M 2,217,225 shares	0.00%	+19.39K(+0.90%)Added	SEC filing ↗ Feb 11, 2025	▾
06	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$23.23M 2,185,101 shares	0.02%	+122.97K(+6.00%)Added	SEC filing ↗ Feb 14, 2025	▾
07	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC CIK 1644956 · View history	$11.29M 1,062,105 shares	0.03%	+1.06MNew	SEC filing ↗ Feb 10, 2025	▾
08	EASTERLY INVESTMENT PARTNERS LLC CIK 1766150 · View history	$10.15M 954,995 shares	0.80%	+78.86K(+9.00%)Added	SEC filing ↗ Feb 12, 2025	▾
09	UBS Group AG CIK 1610520 · View history	$9.93M 934,550 shares	0.00%	+913.39K(+4,315.80%)Added	SEC filing ↗ Feb 14, 2025	▾
10	Kent Lake PR LLC CIK 2037231 · View history	$9.57M 900,000 shares	4.05%	+228.50K(+34.00%)Added	SEC filing ↗ Feb 14, 2025	▾
11	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$9.50M 893,645 shares	0.00%	+6.10K(+0.70%)Added	SEC filing ↗ Feb 13, 2025	▾
12	STATE STREET CORP CIK 93751 · View history	$9.25M 870,305 shares	0.00%	+33.86K(+4.00%)Added	SEC filing ↗ Feb 14, 2025	▾
13	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$9.18M 863,503 shares	0.00%	+4.84K(+0.60%)Added	SEC filing ↗ Feb 12, 2025	▾
14	Pier Capital, LLC CIK 1310051 · View history	$7.22M 679,680 shares	1.03%	+167.88K(+32.80%)Added	SEC filing ↗ Feb 11, 2025	▾
15	BAILLIE GIFFORD & CO CIK 1088875 · View history	$6.69M 629,797 shares	0.01%	-3.20K(-0.50%)Reduced	SEC filing ↗ Jan 31, 2025	▾
16	EVENTIDE ASSET MANAGEMENT, LLC CIK 1442891 · View history	$6.54M 615,000 shares	0.12%	+615.00KNew	SEC filing ↗ Feb 14, 2025	▾
17	Tikvah Management LLC CIK 1606477 · View history	$6.08M 571,619 shares	1.65%	0(0.00%)Unchanged	SEC filing ↗ Feb 13, 2025	▾
18	ASHFORD CAPITAL MANAGEMENT INC CIK 897070 · View history	$5.79M 544,530 shares	0.68%	-189.59K(-25.80%)Reduced	SEC filing ↗ Feb 18, 2025	▾
19	Nuveen Asset Management, LLC CIK 1521019 · View history	$5.73M 539,093 shares	0.00%	-68.15K(-11.20%)Reduced	SEC filing ↗ Feb 14, 2025	▾
20	Granahan Investment Management, LLC CIK 1026710 · View history	$5.70M 536,417 shares	0.24%	-566.21K(-51.40%)Reduced	SEC filing ↗ Feb 14, 2025	▾

Showing 20 / 153 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

153

Cancelled or null records excluded

Disclosed shares

34,991,183

Not deduplicated across managers

Disclosed value

$371.98M

Not market cap or free float

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.

Quanterix Corp · Q4 2024

Explore all 153 reporting institutions.

This page includes 20 of 153 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

Already have an account?

＋ 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 153 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":"2024Q4","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.