ATRICURE INC (ATRC) Institutional Ownership Changes & 13F Activity

ATRICURE INC (ATRC). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Point72 Asset Management, L.P., Alliancebernstein L.P., Divisadero Street Capital Management, Lp, Aqr Capital Management Llc, and Hrt Financial Lp.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Manufacturers Life Insurance Company, TheBuy+2,461+10.9%24,985$699.08KQ2 2026Sep 09, 2026
Parkside Financial Bank & TrustSell-34-17.5%160$4.48KQ2 2026Sep 04, 2026
Citadel Advisors LlcBuy+89,992+103.0%177,339$4.96MQ2 2026Sep 02, 2026
First Eagle U.S. ValueBuy+35,500+13.5%297,643$8.33MQ2 2026Aug 24, 2026
California State Teachers Retirement SystemSell-1,515-2.5%58,432$1.63MQ2 2026Aug 24, 2026
Assenagon Asset Management S.A.Buy+62,33462,334$1.74MQ2 2026Aug 21, 2026
Mercer Global Advisors IncBuy+13,56113,561$379.44KQ2 2026Aug 19, 2026
Grandeur Peak Global Advisors, LlcBuy+205,497+53.8%587,399$16.44MQ2 2026Aug 17, 2026
Caitlin John, LlcBuy+3939$1.09KQ2 2026Aug 17, 2026
Point72 Asset Management, L.P.Buy+604,380604,380$16.91MQ2 2026Aug 14, 2026
Alliancebernstein L.P.Sell-490,507-15.1%2,768,365$78.98MQ2 2026Aug 14, 2026
Divisadero Street Capital Management, LpSell-359,024-31.0%800,931$22.41MQ2 2026Aug 14, 2026
Aqr Capital Management LlcBuy+357,741+191.9%544,123$15.22MQ2 2026Aug 14, 2026
Hrt Financial LpBuy+232,665+346.9%299,736$8.39MQ2 2026Aug 14, 2026
Two Sigma Investments, LpSell-225,208-30.0%525,795$14.71MQ2 2026Aug 14, 2026
Hood River Capital Management LlcSell-212,246-6.8%2,905,299$81.29MQ2 2026Aug 14, 2026
Meros Investment Management, LpBuy+170,000170,000$4.76MQ2 2026Aug 14, 2026
First Light Asset Management, LlcSell-161,683-22.2%567,838$15.89MQ2 2026Aug 14, 2026
Osterweis Capital Management IncBuy+151,710+43.4%501,355$14.03MQ2 2026Aug 14, 2026
Topline Capital Management, LlcBuy+138,490138,490$3.87MQ2 2026Aug 14, 2026
D. E. Shaw & Co., Inc.Buy+136,235+240.7%192,824$5.40MQ2 2026Aug 14, 2026
Trexquant Investment LpSell-116,310-81.3%26,784$749.42KQ2 2026Aug 14, 2026
Wellington Management Group LlpBuy+113,048+3.3%3,495,603$97.81MQ2 2026Aug 14, 2026
Qube Research & Technologies LtdBuy+106,033+23.3%560,824$15.69MQ2 2026Aug 14, 2026
Bank Of America CorpBuy+105,809+13.8%874,370$24.46MQ2 2026Aug 14, 2026
Ameriprise Financial IncBuy+94,89794,897$2.66MQ2 2026Aug 14, 2026
Exoduspoint Capital Management, LpBuy+86,35686,356$2.42MQ2 2026Aug 14, 2026
Invesco Ltd.Buy+84,84784,847$2.37MQ2 2026Aug 14, 2026
Susquehanna Portfolio Strategies, LlcBuy+80,08980,089$2.24MQ2 2026Aug 14, 2026
Nomura Asset Management International Inc.Sell-70,648-3.9%1,734,279$48.52MQ2 2026Aug 14, 2026
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Frequently asked questions about ATRC activity

  • Which institutional owners are buying ATRC?

    Institutional owners buying ATRC include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in ATRC activity?

    "Buy" means an investor increased their reported position in ATRC compared to the prior reporting period. This reflects growing exposure to ATRICURE INC (ATRC) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in ATRC increasing?

    Institutional interest in ATRC can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.