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AtriCure (ATRC) Institutional Ownership

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$59.96 +1.13 (+1.92%)
Closing price 04:00 PM Eastern
Extended Trading
$59.45 -0.51 (-0.85%)
As of 07:52 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for AtriCure (NASDAQ:ATRC)

Current
Institutional Ownership
Percentage
99.11%
Number of
Institutional Buyers
(last 12 months)
146
Total
Institutional Inflows
(last 12 months)
$388.85M
Number of
Institutional Sellers
(last 12 months)
70
Total
Institutional Outflows
(last 12 months)
$198.84M
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ATRC Institutional Buying and Selling by Quarter

AtriCure Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026 First Light Asset Management LLC567,838$15.89M1.0%-22.2%1.116%
9/9/2026 Tidal Investments LLC19,091$534K0.0%+46.2%0.038%
9/9/2026 WINTON GROUP Ltd35,800$1.00M0.0%N/A0.070%
9/9/2026 Engineers Gate Manager LP48,160$1.35M0.0%+12.3%0.095%
9/9/2026 Integrated Wealth Concepts LLC1,634$46K0.0%N/A0.003%
9/8/2026 Allworth Financial LP1,527$43K0.0%+372.8%0.003%
9/8/2026 Arizona State Retirement System13,273$371K0.0%-2.8%0.026%
8/26/2026 Amundi264,854$7.41M0.0%+17.2%0.521%
8/26/2026 HighTower Advisors LLC8,490$238K0.0%N/A0.017%
8/25/2026 VIRGINIA RETIREMENT SYSTEMS ET Al17,200$481K0.0%N/A0.034%
8/22/2026 Three Seasons Wealth LLC7,152$200K0.0%N/A0.014%
8/20/2026 Grandeur Peak Global Advisors LLC587,399$16.44M4.0%+53.8%1.155%
8/20/2026 Headlands Technologies LLC10,064$282K0.0%N/A0.020%
8/20/2026 Susquehanna Fundamental Investments LLC50,484$1.41M0.0%N/A0.099%
8/19/2026 UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC131,853$3.69M0.0%-76.2%0.259%
8/19/2026 Wellington Management Group LLP3,495,603$97.81M0.0%+3.3%6.872%
8/18/2026 Grandeur Peak Global Advisors LLC587,399$16.44M3.3%N/A1.155%
8/17/2026 Bank of America Corp DE874,370$24.47M0.0%N/A1.719%
8/15/2026 Man Group plc24,443$684K0.0%N/A0.048%
8/15/2026 Jupiter Topco LLC22,883$640K0.0%N/A0.045%
8/15/2026 Meros Investment Management LP170,000$4.76M0.0%N/A0.334%
8/14/2026 Canada Pension Plan Investment Board14,100$395K0.0%N/A0.028%
8/14/2026 Osterweis Capital Management Inc.501,355$14.03M0.7%N/A0.986%
8/14/2026 Legal & General Group Plc39,893$1.12M0.0%N/A0.078%
8/14/2026 The Manufacturers Life Insurance Company24,985$699K0.0%N/A0.049%
8/14/2026 Paradigm Capital Management Inc. NY123,100$3.44M0.1%N/A0.242%
8/14/2026 Algert Global LLC14,239$398K0.0%-65.1%0.028%
8/13/2026 Sanctuary Advisors LLC17,515$490K0.0%N/A0.034%
8/13/2026 Connor Clark & Lunn Investment Management Ltd.335,541$9.39M0.0%N/A0.660%
8/13/2026 Globeflex Capital L P4,496$126K0.0%N/A0.009%
8/12/2026 Commerce Bank11,445$320K0.0%N/A0.022%
8/12/2026 Emerald Investment Advisers LLC79,102$2.21M0.1%N/A0.155%
8/12/2026 Ieq Capital LLC41,484$1.16M0.0%N/A0.082%
8/11/2026 Allworth Financial LP1,527$43K0.0%N/A0.003%
8/11/2026 B. Metzler seel. Sohn & Co. AG49,876$1.40M0.0%N/A0.098%
8/11/2026 Advisors Capital Management LLC174,496$4.88M0.1%N/A0.343%
8/10/2026 Diversify Advisory Services LLC11,993$448K0.0%N/A0.024%
8/7/2026 BlackRock Inc.4,474,548$125.20M0.0%N/A8.797%
8/7/2026 Deutsche Bank AG59,668$1.67M0.0%N/A0.117%
8/7/2026 Rice Hall James & Associates LLC134,207$3.76M0.2%N/A0.264%
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8/6/2026 Global Retirement Partners LLC1,874$52K0.0%N/A0.004%
8/6/2026 Bank of New York Mellon Corp141,275$3.95M0.0%N/A0.278%
7/10/2026 Wasatch Advisors LP233,604$6.54M0.0%-8.0%0.461%
7/10/2026 Handelsbanken Fonder AB22,800$638K0.0%+12.3%0.045%
7/9/2026 First Bank & Trust8,874$248K0.0%-4.4%0.018%
7/9/2026 Tactive Advisors LLC13,367$374K0.1%N/A0.026%
7/8/2026 Assenagon Asset Management S.A.62,334$1.74M0.0%N/A0.123%
7/7/2026 Harbor Investment Advisory LLC1,426$40K0.0%N/A0.003%
5/19/2026 Bank of America Corp DE768,561$21.93M0.0%+13.7%1.518%
5/18/2026 Amundi225,932$6.45M0.0%-2.1%0.446%
5/18/2026 California State Teachers Retirement System59,947$1.71M0.0%+33.3%0.118%
5/18/2026 Royal Bank of Canada2,184$61K0.0%-30.5%0.004%
5/16/2026 Quantinno Capital Management LP9,726$277K0.0%N/A0.019%
5/16/2026 First Light Asset Management LLC729,521$20.81M1.9%-37.9%1.441%
5/16/2026 Lazard Asset Management LLC54,015$1.54M0.0%+8.6%0.107%
5/15/2026 Rice Hall James & Associates LLC25,210$719K0.0%N/A0.050%
5/15/2026 Entropy Technologies LP11,493$328K0.0%+26.5%0.023%
5/14/2026 Renaissance Technologies LLC308,700$8.81M0.0%-4.1%0.610%
5/14/2026 Arrowstreet Capital Limited Partnership277,682$7.92M0.0%N/A0.548%
5/14/2026 Caxton Associates LLP10,472$299K0.0%+52.1%0.021%
5/14/2026 Sei Investments Co.260,788$7.44M0.0%+64.7%0.515%
5/14/2026 State of Wyoming3,537$101K0.0%+87.7%0.007%
5/13/2026 First Trust Advisors LP189,285$5.40M0.0%+60.7%0.374%
5/7/2026 WCM Investment Management LLC359,761$10.17M0.0%-3.5%0.710%
5/7/2026 Dimensional Fund Advisors LP997,759$28.47M0.0%+8.2%1.970%
5/7/2026 Parallel Advisors LLC3,643$104K0.0%-10.2%0.007%
5/6/2026 Bessemer Group Inc.9,570$273K0.0%-71.1%0.019%
5/5/2026 Bank of New York Mellon Corp130,650$3.73M0.0%-3.6%0.258%
5/4/2026 Principal Financial Group Inc.64,296$1.83M0.0%+45.7%0.127%
5/2/2026 Diversify Wealth Management LLC11,631$318K0.0%+27.0%0.023%
5/2/2026 Valmark Advisers Inc.13,080$373K0.0%N/A0.026%
5/1/2026 Fifth Third Bancorp1,781$51K0.0%N/A0.004%
4/24/2026 Perkins Capital Management Inc.26,100$745K0.7%-4.9%0.052%
4/21/2026 Wasatch Advisors LP253,931$7.25M0.0%-28.2%0.502%
4/16/2026 SG Americas Securities LLC9,627$275K0.0%-74.0%0.019%
4/16/2026 Diversified Trust Co40,090$1.14M0.0%+7.1%0.079%
3/20/2026 Hsbc Holdings PLC17,224$686K0.0%+13.3%0.035%
3/17/2026 Rockefeller Capital Management L.P.3,983$158K0.0%+43.4%0.008%
2/19/2026 Invesco Ltd.74,435$2.95M0.0%+7.9%0.150%
2/18/2026 Mackenzie Financial Corp13,597$545K0.0%+5.3%0.027%
2/18/2026 XTX Topco Ltd11,069$438K0.0%+88.0%0.022%
2/18/2026 Voloridge Investment Management LLC220,290$8.72M0.0%-19.5%0.443%
2/18/2026 Wellington Management Group LLP3,917,991$155.00M0.1%-8.7%7.880%
2/18/2026 Susquehanna Portfolio Strategies LLC86,325$3.42M0.1%N/A0.174%
2/18/2026 Osterweis Capital Management Inc.203,575$8.05M0.3%-36.8%0.409%
2/18/2026 Millennium Management LLC163,795$6.48M0.0%-53.6%0.329%
2/18/2026 Man Group plc17,401$688K0.0%-70.8%0.035%
2/18/2026 Engineers Gate Manager LP58,479$2.31M0.0%+104.2%0.118%
2/17/2026 PDT Partners LLC21,201$839K0.1%-10.5%0.043%
2/17/2026 AQR Capital Management LLC99,956$3.95M0.0%+18.8%0.201%
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2/17/2026 Lazard Asset Management LLC49,719$1.97M0.0%+6.1%0.100%
2/17/2026 First Light Asset Management LLC1,175,445$46.50M3.6%+32.0%2.364%
2/17/2026 Trexquant Investment LP77,667$3.07M0.0%+16.8%0.156%
2/17/2026 Amundi230,852$9.13M0.0%+5.2%0.464%
2/17/2026 Jump Financial LLC16,664$659K0.0%-57.9%0.034%
2/17/2026 Price T Rowe Associates Inc. MD50,577$2.00M0.0%+4.4%0.102%
2/17/2026 Osaic Holdings Inc.7,184$284K0.0%+195.6%0.014%
2/17/2026 Adage Capital Partners GP L.L.C.110,210$4.36M0.0%-37.0%0.222%
2/17/2026 Russell Investments Group Ltd.14,864$588K0.0%+83.0%0.030%
2/17/2026 Kemnay Advisory Services Inc.2,892$114K0.0%N/A0.006%


ATRC Institutional Ownership - Frequently Asked Questions

During the previous two years, 254 institutional investors and hedge funds held shares of AtriCure. The most heavily invested institutionals were Vanguard Group Inc. ($193.99M), Alliancebernstein L.P. ($125.44M), BlackRock Inc. ($125.20M), Hood River Capital Management LLC ($100.31M), Wellington Management Group LLP ($97.81M), State Street Corp ($49.15M), and Geode Capital Management LLC ($47.14M).Learn more on AtriCure's institutional investors.

99.11% of AtriCure's stock is owned by institutional investors. Learn more on ATRC's institutional investor holdings.

Of the 233 institutional investors that purchased AtriCure's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: BlackRock Inc. ($4.47M), UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC ($1.39M), Osterweis Capital Management Inc. ($1.12M), Bank of America Corp DE ($1.08M), Nuveen LLC ($950.60K), Grandeur Peak Global Advisors LLC ($792.90K), and Jennison Associates LLC ($593.27K).

Institutional investors have bought a total of 12,672,456 shares in the last 24 months. This purchase volume represents approximately $388.85M in transactions.

Of the 70 institutional investors that sold AtriCure's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC ($1.06M), Champlain Investment Partners LLC ($843.15K), First Light Asset Management LLC ($732.42K), Marshall Wace LLP ($446.08K), Wellington Management Group LLP ($374.10K), Wasatch Advisors LP ($273.22K), and Nuveen LLC ($220.32K).

Institutional investors have sold a total of 5,595,969 shares in the last 24 months. This volume of shares sold represents approximately $198.84M in transactions.


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Institutional ownership data for NASDAQ:ATRC is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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