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 |
|---|---|---|---|---|---|
| Alliancebernstein L.P. | 3,258,872 | $128.9M | 0.04% | −304,710−8.6% | Reduced |
| BlackRock, Inc. | 4,042,681 | $115.3M | 0.00% | −23,123−0.6% | Reduced |
| Wellington Management Group LLP | 3,382,555 | $96.5M | 0.02% | −535,436−13.7% | Reduced |
| Hood River Capital Management LLC | 3,117,545 | $88.9M | 0.89% | +20,934+0.7% | Added |
| Vanguard Portfolio Management LLC | 2,702,632 | $77.1M | 0.00% | +2,702,632 | New |
| Vanguard Capital Management LLC | 2,155,764 | $61.5M | 0.00% | +2,155,764 | New |
| Nomura Asset Management International Inc. | 1,804,927 | $51.5M | 0.09% | −233,776−11.5% | Reduced |
| Goldman Sachs Group Inc | 1,667,166 | $47.6M | 0.01% | +782,104+88.4% | Added |
| Marshall Wace, LLP | 1,467,524 | $41.9M | 0.04% | +554,071+60.7% | Added |
| State Street Corp | 1,302,162 | $37.2M | 0.00% | +59,788+4.8% | Added |
| Geode Capital Management, LLC | 1,226,116 | $35.0M | 0.00% | +34,618+2.9% | Added |
| Divisadero Street Capital Management, LP | 1,159,955 | $33.1M | 1.55% | +1,159,955 | New |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,060,806 | $30.3M | 0.04% | +101,512+10.6% | Added |
| Neuberger Berman Group LLC | 1,050,282 | $30.0M | 0.02% | −36,044−3.3% | Reduced |
| Dimensional Fund Advisors LP | 997,759 | $28.5M | 0.01% | +75,862+8.2% | Added |
| Champlain Investment Partners, LLC | 971,111 | $27.7M | 0.35% | −202,494−17.3% | Reduced |
| GW&K Investment Management, LLC | 963,415 | $27.5M | 0.24% | +11,326+1.2% | Added |
| Kennedy Capital Management, Inc. | 834,155 | $23.8M | 0.50% | −3,171−0.4% | Reduced |
| Bank of America Corp | 768,561 | $21.9M | 0.00% | +92,830+13.7% | Added |
| Two Sigma Investments, LP | 751,003 | $21.4M | 0.02% | +370,504+97.4% | Added |
| First Light Asset Management, LLC | 729,521 | $20.8M | 1.87% | −445,924−37.9% | Reduced |
| Voya Investment Management LLC | 719,649 | $20.5M | 0.02% | +7,320+1.0% | Added |
| Morgan Stanley | 719,162 | $20.5M | 0.00% | +373,046+107.8% | Added |
| DAFNA Capital Management LLC | 597,431 | $17.0M | 3.88% | 00.0% | Unchanged |
| Massachusetts Financial Services Co | 585,353 | $16.7M | 0.01% | +74,140+14.5% | Added |
| UBS Asset Management Americas Inc | 555,114 | $15.8M | 0.00% | −14,609−2.6% | Reduced |
| Qube Research & Technologies Ltd | 454,791 | $13.0M | 0.02% | +164,251+56.5% | Added |
| Northern Trust Corp | 449,599 | $12.8M | 0.00% | +11,389+2.6% | Added |
| Charles Schwab Investment Management Inc | 429,833 | $12.3M | 0.00% | −8,050−1.8% | Reduced |
| Grandeur Peak Global Advisors, LLC | 381,902 | $10.9M | 2.55% | +53,411+16.3% | Added |
| WCM Investment Management, LLC | 359,761 | $10.2M | 0.02% | −12,921−3.5% | Reduced |
| Osterweis Capital Management Inc | 349,645 | $9.98M | 0.51% | +146,070+71.8% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 345,388 | $9.85M | 0.02% | −33,108−8.7% | Reduced |
| Vanguard Fiduciary Trust Co | 342,854 | $9.78M | 0.00% | +342,854 | New |
| FMR LLC | 336,814 | $9.61M | 0.00% | +51,055+17.9% | Added |
| Nuveen, LLC | 336,727 | $9.61M | 0.00% | +468+0.1% | Added |
| Renaissance Technologies LLC | 308,700 | $8.81M | 0.01% | −13,200−4.1% | Reduced |
| Arrowstreet Capital, Limited Partnership | 277,682 | $7.92M | 0.00% | +277,682 | New |
| First Eagle Investment Management, LLC | 262,143 | $7.48M | 0.01% | +145,534+124.8% | Added |
| SEI Investments Co | 260,788 | $7.44M | 0.01% | +102,485+64.7% | Added |
| Wasatch Advisors Inc | 253,931 | $7.24M | 0.05% | −99,946−28.2% | Reduced |
| Panagora Asset Management Inc | 227,377 | $6.49M | 0.02% | +802+0.4% | Added |
| Amundi | 225,932 | $6.45M | 0.00% | −4,920−2.1% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 215,545 | $6.15M | 0.01% | +22,271+11.5% | Added |
| Raymond James Financial Inc | 216,907 | $6.13M | 0.00% | −555−0.3% | Reduced |
| Nicholas Company, Inc. | 204,595 | $5.84M | 0.11% | −910−0.4% | Reduced |
| First Trust Advisors LP | 189,285 | $5.40M | 0.00% | +71,527+60.7% | Added |
| AQR Capital Management LLC | 186,382 | $5.32M | 0.00% | +86,426+86.5% | Added |
| Advisors Capital Management, LLC | 182,314 | $5.20M | 0.06% | −539−0.3% | Reduced |
| Millennium Management LLC | 179,886 | $5.13M | 0.00% | +16,091+9.8% | Added |
| JPMorgan Chase & Co | 171,263 | $4.84M | 0.00% | −8,337−4.6% | Reduced |
| State of Wisconsin Investment Board | 167,354 | $4.77M | 0.01% | +3,155+1.9% | Added |
| Adage Capital Partners GP, L.L.C. | 150,000 | $4.28M | 0.01% | +39,790+36.1% | Added |
| Trexquant Investment LP | 143,094 | $4.08M | 0.03% | +65,427+84.2% | Added |
| Bank of New York Mellon Corp | 130,650 | $3.73M | 0.00% | −4,922−3.6% | Reduced |
| Paradigm Capital Management Inc | 123,100 | $3.51M | 0.13% | 00.0% | Unchanged |
| Allianz Asset Management GmbH | 122,158 | $3.49M | 0.00% | +4,342+3.7% | Added |
| Sit Investment Associates Inc | 113,330 | $3.23M | 0.07% | +5,425+5.0% | Added |
| Schonfeld Strategic Advisors LLC | 101,682 | $2.90M | 0.02% | +101,682 | New |
| Swiss National Bank | 98,000 | $2.80M | 0.00% | 00.0% | Unchanged |
| Voloridge Investment Management, LLC | 97,182 | $2.77M | 0.01% | −123,108−55.9% | Reduced |
| Acadian Asset Management LLC | 88,852 | $2.53M | 0.00% | +5,969+7.2% | Added |
| Citadel Advisors LLC | 87,347 | $2.49M | 0.00% | −155,394−64.0% | Reduced |
| Man Group plc | 85,116 | $2.43M | 0.01% | +67,715+389.1% | Added |
| HighMark Wealth Management LLC | 83,720 | $2.39M | 0.97% | 00.0% | Unchanged |
| Invesco Ltd. | 77,316 | $2.21M | 0.00% | +2,881+3.9% | Added |
| Emerald Investment Advisers, LLC | 71,492 | $2.04M | 0.18% | +71,492 | New |
| Riverwater Partners LLC | 70,506 | $2.01M | 0.67% | +10,184+16.9% | Added |
| Wells Fargo & Company | 69,084 | $1.97M | 0.00% | −32,402−31.9% | Reduced |
| HRT Financial LP | 67,071 | $1.91M | 0.00% | +67,071 | New |
| Rhumbline Advisers | 66,281 | $1.89M | 0.00% | −1,064−1.6% | Reduced |
| UBS Group AG | 65,865 | $1.88M | 0.00% | −38,195−36.7% | Reduced |
| Principal Financial Group Inc | 64,296 | $1.83M | 0.00% | +20,156+45.7% | Added |
| Price T Rowe Associates Inc | 60,285 | $1.72M | 0.00% | +9,708+19.2% | Added |
| California State Teachers Retirement System | 59,947 | $1.71M | 0.00% | +14,987+33.3% | Added |
| Brinker Capital Investments, LLC | 58,297 | $1.66M | 0.01% | −1,841−3.1% | Reduced |
| Envestnet Asset Management Inc | 57,877 | $1.65M | 0.00% | −424−0.7% | Reduced |
| D. E. Shaw & Co., Inc. | 56,589 | $1.61M | 0.00% | +56,589 | New |
| Franklin Resources Inc | 55,516 | $1.58M | 0.00% | +3,233+6.2% | Added |
| Lazard Asset Management LLC | 54,015 | $1.54M | 0.00% | +4,296+8.6% | Added |
| Ameriprise Financial Inc | 52,383 | $1.49M | 0.00% | +25,546+95.2% | Added |
| Knott David M Jr | 51,400 | $1.47M | 0.87% | 00.0% | Unchanged |
| Deutsche Bank AG | 50,510 | $1.44M | 0.00% | +4,584+10.0% | Added |
| B. Metzler seel. Sohn & Co. AG | 49,876 | $1.42M | 0.01% | 00.0% | Unchanged |
| Oak Harvest Investment Services | 45,000 | $1.28M | 0.13% | +7,500+20.0% | Added |
| Vanguard Asset Management, Ltd | 44,784 | $1.28M | 0.00% | +44,784 | New |
| Engineers Gate Manager LP | 42,877 | $1.22M | 0.02% | −15,602−26.7% | Reduced |
| Legal & General Group Plc | 42,302 | $1.21M | 0.00% | −9,741−18.7% | Reduced |
| Harbor Capital Advisors, Inc. | 41,547 | $1.19M | 0.10% | +7,983+23.8% | Added |
| Algert Global LLC | 40,799 | $1.16M | 0.02% | −220,678−84.4% | Reduced |
| Scotia Capital Inc. | 40,379 | $1.15M | 0.00% | +1,430+3.7% | Added |
| Diversified Trust Co | 40,090 | $1.14M | 0.02% | +2,654+7.1% | Added |
| Susquehanna International Group, LLP | 38,777 | $1.11M | 0.00% | +38,777 | New |
| Gsa Capital Partners LLP | 36,242 | $1.03M | 0.06% | +1,440+4.1% | Added |
| Teachers Retirement System of the State of Kentucky | 36,102 | $1.03M | 0.01% | 00.0% | Unchanged |
| Bridgewater Associates, LP | 33,517 | $956.2K | 0.00% | +33,517 | New |
| Prudential Financial Inc | 30,270 | $863.6K | 0.00% | −30,340−50.1% | Reduced |
| Marks Group Wealth Management, Inc | 28,973 | $826.6K | 0.08% | 00.0% | Unchanged |
| US Bancorp | 28,105 | $801.8K | 0.00% | +9,521+51.2% | Added |
| MetLife Investment Management | 26,717 | $762.2K | 0.00% | −237−0.9% | Reduced |