Who owns AtriCure, Inc.?
Institutional ownership of ATRC from SEC Form 13F filings across 178 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.
178
13F holders
$1.05B
value, 2026 filers
75.1%
of shares outstanding (38.2M sh)
33
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 ATRC's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 4.5M | $125.2M | 0.0% | 8.8% | +10.7% |
| 2 | WELLINGTON MANAGEMENT GROUP LLP | 3.5M | $97.8M | 0.0% | 6.9% | +3.3% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.1M | $87.5M | 0.0% | 6.1% | +15.7% |
| 4 | ALLIANCEBERNSTEIN L.P. | 2.8M | $79.0M | 0.0% | 5.4% | -15.1% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2.2M | $61.3M | 0.0% | 4.3% | -49.2% |
| 6 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 1.7M | $48.5M | 0.1% | 3.4% | -3.9% |
| 7 | GOLDMAN SACHS GROUP INC | 1.6M | $44.7M | 0.0% | 3.1% | -4.1% |
| 8 | MARSHALL WACE, LLP | 1.3M | $37.3M | 0.0% | 2.6% | -9.1% |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 1.3M | $36.9M | 0.0% | 2.6% | +7.6% |
| 10 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.3M | $36.3M | 0.0% | 2.5% | +366.8% |
| 11 | NEUBERGER BERMAN GROUP LLC | 947,982 | $26.6M | 0.0% | 1.9% | -9.7% |
| 12 | BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 897,419 | $25.1M | 0.0% | 1.8% | -15.4% |
| 13 | BANK OF AMERICA CORP /DE/ | 874,370 | $24.5M | 0.0% | 1.7% | +13.8% |
| 14 | Point72 Asset Management, L.P.NEW | 604,380 | $16.9M | 0.0% | 1.2% | new |
| 15 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 580,621 | $16.2M | 0.0% | 1.1% | -0.8% |
| 16 | Qube Research & Technologies Ltd | 560,824 | $15.7M | 0.0% | 1.1% | +23.3% |
| 17 | TWO SIGMA INVESTMENTS, LP | 525,795 | $14.7M | 0.0% | 1% | -30.0% |
| 18 | FMR LLC | 506,357 | $14.2M | 0.0% | 1% | +50.3% |
| 19 | OSTERWEIS CAPITAL MANAGEMENT INC | 501,355 | $14.0M | 0.7% | 1% | +43.4% |
| 20 | NORTHERN TRUST CORP | 482,043 | $13.5M | 0.0% | 0.9% | +7.2% |
| 21 | MORGAN STANLEY | 457,798 | $12.8M | 0.0% | 0.9% | -36.3% |
| 22 | Sixth Street Partners Management Company, L.P.NEW | 423,106 | $11.8M | 2.0% | 0.8% | new |
| 23 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 423,106 | $11.8M | 0.0% | 0.8% | -1.6% |
| 24 | NORGES BANKNEW | 374,362 | $10.5M | 0.0% | 0.7% | new |
| 25 | Nuveen, LLC | 365,825 | $10.2M | 0.0% | 0.7% | +8.6% |
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.