AtriCure, Inc.
ATRC- Exchange
- Nasdaq
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0001323885
In the last 90 days, AtriCure, Inc. insiders filed 0 open-market purchases and 10 sales; 251 institutions reported holding it in 13F filings for Q2 2026, worth $1.47B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in AtriCure, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 224
- −5 vs. Q4 2025
- Shares held
- 50.0M
- +6.41M (+14.7%) vs. Q4 2025
- Total value
- $1.46B
- −$263.0M (−15.2%) vs. Q4 2025
- New holders
- 35
- 83 more added
- Sold out
- 40
- 66 more reduced
5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ATRC on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 251 | $1.47B |
| Q1 2026 | 224 | $1.46B |
| Q4 2025 | 234 | $1.93B |
| Q3 2025 | 223 | $1.70B |
| Q2 2025 | 202 | $1.60B |
| Q1 2025 | 221 | $1.62B |
| Q4 2024 | 213 | $1.42B |
| Q3 2024 | 202 | $1.39B |
| Q2 2024 | 198 | $1.16B |
| Q1 2024 | 224 | $1.51B |
| Q4 2023 | 233 | $1.68B |
| Q3 2023 | 231 | $1.99B |
| Q2 2023 | 224 | $2.22B |
| Q1 2023 | 225 | $1.86B |
| Q4 2022 | 212 | $2.02B |
| Q3 2022 | 214 | $1.75B |
| Q2 2022 | 215 | $1.82B |
| Q1 2022 | 218 | $2.89B |
| Q4 2021 | 217 | $3.07B |
| Q3 2021 | 214 | $3.02B |
| Q2 2021 | 212 | $3.51B |
| Q1 2021 | 191 | $2.92B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding AtriCure, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| DAFNA Capital Management LLC | 597,431 | $17.0M | 3.88% | 00.0% | Unchanged |
| Morgan Stanley | 719,162 | $20.5M | 0.00% | +373,046+107.8% | Added |
| Voya Investment Management LLC | 719,649 | $20.5M | 0.02% | +7,320+1.0% | Added |
| First Light Asset Management, LLC | 729,521 | $20.8M | 1.87% | −445,924−37.9% | Reduced |
| Two Sigma Investments, LP | 751,003 | $21.4M | 0.02% | +370,504+97.4% | Added |
| Bank of America Corp | 768,561 | $21.9M | 0.00% | +92,830+13.7% | Added |
| Kennedy Capital Management, Inc. | 834,155 | $23.8M | 0.50% | −3,171−0.4% | Reduced |
| GW&K Investment Management, LLC | 963,415 | $27.5M | 0.24% | +11,326+1.2% | Added |
| Champlain Investment Partners, LLC | 971,111 | $27.7M | 0.35% | −202,494−17.3% | Reduced |
| Dimensional Fund Advisors LP | 997,759 | $28.5M | 0.01% | +75,862+8.2% | Added |
| Neuberger Berman Group LLC | 1,050,282 | $30.0M | 0.02% | −36,044−3.3% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,060,806 | $30.3M | 0.04% | +101,512+10.6% | Added |
| Divisadero Street Capital Management, LP | 1,159,955 | $33.1M | 1.55% | +1,159,955 | New |
| Geode Capital Management, LLC | 1,226,116 | $35.0M | 0.00% | +34,618+2.9% | Added |
| State Street Corp | 1,302,162 | $37.2M | 0.00% | +59,788+4.8% | Added |
| Marshall Wace, LLP | 1,467,524 | $41.9M | 0.04% | +554,071+60.7% | Added |
| Goldman Sachs Group Inc | 1,667,166 | $47.6M | 0.01% | +782,104+88.4% | Added |
| Nomura Asset Management International Inc. | 1,804,927 | $51.5M | 0.09% | −233,776−11.5% | Reduced |
| Vanguard Capital Management LLC | 2,155,764 | $61.5M | 0.00% | +2,155,764 | New |
| Vanguard Portfolio Management LLC | 2,702,632 | $77.1M | 0.00% | +2,702,632 | New |
| Hood River Capital Management LLC | 3,117,545 | $88.9M | 0.89% | +20,934+0.7% | Added |
| Wellington Management Group LLP | 3,382,555 | $96.5M | 0.02% | −535,436−13.7% | Reduced |
| BlackRock, Inc. | 4,042,681 | $115.3M | 0.00% | −23,123−0.6% | Reduced |
| Alliancebernstein L.P. | 3,258,872 | $128.9M | 0.04% | −304,710−8.6% | Reduced |
| Defilade Capital Management, L.P. | 0 | $0 | 0.00% | −397,636−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −277,924−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −277,700−100.0% | Sold out |
| Oberweis Asset Management Inc | 0 | $0 | 0.00% | −217,992−100.0% | Sold out |
| Susquehanna Portfolio Strategies, LLC | 0 | $0 | 0.00% | −86,325−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −85,803−100.0% | Sold out |
| F/M Investments LLC | 0 | $0 | 0.00% | −72,588−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −52,620−100.0% | Sold out |
| Deerfield Management Company, L.P. (Series C) | 0 | $0 | 0.00% | −52,076−100.0% | Sold out |
| OpenArc Corporate Advisory, LLC | 0 | $0 | 0.00% | −44,084−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −34,728−100.0% | Sold out |
| Victory Capital Management Inc | 0 | $0 | 0.00% | −24,843−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −23,082−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −21,201−100.0% | Sold out |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −17,224−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −16,664−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −14,225−100.0% | Sold out |
| Bridgefront Capital, LLC | 0 | $0 | 0.00% | −12,506−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −11,301−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −11,069−100.0% | Sold out |
| Versor Investments LP | 0 | $0 | 0.00% | −10,500−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −8,966−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −8,874−100.0% | Sold out |
| M&T Bank Corp | 0 | $0 | 0.00% | −7,060−100.0% | Sold out |
| Atria Investments LLC | 0 | $0 | 0.00% | −6,476−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −6,095−100.0% | Sold out |
| Stratos Wealth Advisors, LLC | 0 | $0 | 0.00% | −5,472−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −4,994−100.0% | Sold out |
| Kemnay Advisory Services Inc. | 0 | $0 | 0.00% | −2,892−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −1,520−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −295−100.0% | Sold out |
| Fortitude Family Office, LLC | 0 | $0 | 0.00% | −37−100.0% | Sold out |
| Torren Management, LLC | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| Advocate Investing Services LLC | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| Sunbelt Securities, Inc. | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| SBI Securities Co., Ltd. | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| TFC Financial Management | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Dunhill Financial, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Norges Bank | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |