AtriCure, Inc. ATRC
CIK 0001323885 · CUSIP 04963C209
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 | VANGUARD GROUP INC CIK 102909 · View history | $105.24M 4,621,933 shares | 0.00% | -131.05K(-2.8%)Reduced | SEC filing ↗ Aug 13, 2024 | ▾ |
| 02 | BlackRock Inc. CIK 1364742 · View history | $105.10M 4,615,791 shares | 0.00% | +384.73K(+9.1%)Added | SEC filing ↗ Aug 13, 2024 | ▾ |
| 03 | ALLIANCEBERNSTEIN L.P. CIK 1109448 · View history | $95.75M 4,204,979 shares | 0.03% | +552.24K(+15.1%)Added | SEC filing ↗ Aug 14, 2024 | ▾ |
| 04 | Champlain Investment Partners, LLC CIK 1315478 · View history | $60.91M 2,674,945 shares | 0.37% | -6.05K(-0.2%)Reduced | SEC filing ↗ Aug 14, 2024 | ▾ |
| 05 | FMR LLC CIK 315066 · View history | $48.10M 2,112,353 shares | 0.00% | -364.92K(-14.7%)Reduced | SEC filing ↗ Aug 13, 2024 | ▾ |
| 06 | MACQUARIE GROUP LTD CIK 1418333 · View history | $45.50M 1,998,049 shares | 0.05% | +584.82K(+41.4%)Added | SEC filing ↗ Aug 9, 2024 | ▾ |
| 07 | First Light Asset Management, LLC CIK 1600004 · View history | $44.74M 1,964,703 shares | 3.92% | +581.84K(+42.1%)Added | SEC filing ↗ Aug 14, 2024 | ▾ |
| 08 | Hood River Capital Management LLC CIK 1578177 · View history | $40.42M 1,775,243 shares | 0.84% | +1.78MNew | SEC filing ↗ Aug 14, 2024 | ▾ |
| 09 | WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history | $35.02M 1,537,851 shares | 0.01% | -102.31K(-6.2%)Reduced | SEC filing ↗ Aug 14, 2024 | ▾ |
| 10 | STATE STREET CORP CIK 93751 · View history | $29.19M 1,281,854 shares | 0.00% | +95.18K(+8.0%)Added | SEC filing ↗ Aug 14, 2024 | ▾ |
| 11 | Nuveen Asset Management, LLC CIK 1521019 · View history | $26.92M 1,182,428 shares | 0.01% | -191.52K(-13.9%)Reduced | SEC filing ↗ Aug 9, 2024 | ▾ |
| 12 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $25.51M 1,119,952 shares | 0.00% | +59.11K(+5.6%)Added | SEC filing ↗ Aug 9, 2024 | ▾ |
| 13 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC CIK 861177 · View history | $23.51M 1,032,492 shares | 0.01% | +764.40K(+285.1%)Added | SEC filing ↗ Aug 14, 2024 | ▾ |
| 14 | MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history | $21.69M 952,765 shares | 0.02% | +593.02K(+164.8%)Added | SEC filing ↗ Aug 14, 2024 | ▾ |
| 15 | Fiera Capital Corp CIK 1505817 · Amended · View history | $20.91M 918,207 shares | 0.06% | +10.43K(+1.1%)Added | SEC filing ↗ Oct 31, 2024 | ▾ |
| 16 | NEUBERGER BERMAN GROUP LLC CIK 1465109 · Amended · View history | $19.77M 868,437 shares | 0.02% | +80.46K(+10.2%)Added | SEC filing ↗ Nov 14, 2024 | ▾ |
| 17 | WASATCH ADVISORS LP CIK 814133 · View history | $17.98M 789,814 shares | 0.10% | +69.14K(+9.6%)Added | SEC filing ↗ Aug 14, 2024 | ▾ |
| 18 | GW&K Investment Management, LLC CIK 1082917 · View history | $17.22M 756,374 shares | 0.16% | -42.70K(-5.3%)Reduced | SEC filing ↗ Aug 12, 2024 | ▾ |
| 19 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $16.07M 705,699 shares | 0.00% | -274.74K(-28.0%)Reduced | SEC filing ↗ Aug 9, 2024 | ▾ |
| 20 | BANK OF AMERICA CORP /DE/ CIK 70858 · View history | $15.72M 690,390 shares | 0.00% | +86.82K(+14.4%)Added | SEC filing ↗ Aug 14, 2024 | ▾ |
Showing 20 / 199 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 199 reporting institutions.
This page includes 20 of 199 reporting institutions. Sign 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 199 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.
MCP https://api.akkrudata.ai/mcp
get_institutional_security_holders
{"cusip":"04963C209","quarter":"2024Q2","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 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.