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 (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Wellington Management Group Llp, Alliancebernstein L.P., Hood River Capital Management Llc, Nomura Asset Management International Inc., and First Light Asset Management, Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Ensign Peak Advisors, IncSell-13,000-76.0%4,115$162.79KQ4 2025Aug 18, 2026
Algert Global LlcBuy+114,439+77.8%261,477$10.34MQ4 2025Aug 11, 2026
Hsbc Holdings PlcBuy+17,224—17,224$685.65KQ4 2025Mar 06, 2026
Sunbelt Securities, Inc.Buy+7—7$277.00Q4 2025Feb 20, 2026
Raymond James Financial IncBuy+217,462—217,462$8.74MQ4 2025Feb 18, 2026
Mackenzie Financial CorpBuy+13,597—13,597$545.25KQ4 2025Feb 18, 2026
Wellington Management Group LlpBuy+3,917,991—3,917,991$155.00MQ4 2025Feb 17, 2026
Alliancebernstein L.P.Buy+3,563,582—3,563,582$140.98MQ4 2025Feb 17, 2026
Hood River Capital Management LlcBuy+3,096,611—3,096,611$122.50MQ4 2025Feb 17, 2026
Nomura Asset Management International Inc.Buy+2,038,703—2,038,703$80.65MQ4 2025Feb 17, 2026
First Light Asset Management, LlcBuy+1,175,445—1,175,445$46.50MQ4 2025Feb 17, 2026
Bank Of America CorpBuy+675,731—675,731$26.73MQ4 2025Feb 17, 2026
Dafna Capital Management LlcBuy+597,431—597,431$23.63MQ4 2025Feb 17, 2026
Northern Trust CorpBuy+438,210—438,210$17.34MQ4 2025Feb 17, 2026
Two Sigma Investments, LpBuy+380,499—380,499$15.05MQ4 2025Feb 17, 2026
Qube Research & Technologies LtdBuy+290,540—290,540$11.49MQ4 2025Feb 17, 2026
Fmr LlcBuy+285,759—285,759$11.30MQ4 2025Feb 17, 2026
Point72 Asset Management, L.P.Buy+277,924—277,924$10.99MQ4 2025Feb 17, 2026
Two Sigma Advisers, LpBuy+277,700—277,700$10.99MQ4 2025Feb 17, 2026
Citadel Advisors LlcBuy+242,741—242,741$9.60MQ4 2025Feb 17, 2026
AmundiBuy+230,852—230,852$9.13MQ4 2025Feb 17, 2026
Voloridge Investment Management, LlcBuy+220,290—220,290$8.71MQ4 2025Feb 17, 2026
Oberweis Asset Management Inc/Buy+217,992—217,992$8.62MQ4 2025Feb 17, 2026
Osterweis Capital Management IncBuy+203,575—203,575$8.05MQ4 2025Feb 17, 2026
State Of Wisconsin Investment BoardBuy+164,199—164,199$6.50MQ4 2025Feb 17, 2026
Millennium Management LlcBuy+163,795—163,795$6.48MQ4 2025Feb 17, 2026
Adage Capital Partners Gp, L.L.C.Buy+110,210—110,210$4.36MQ4 2025Feb 17, 2026
Aqr Capital Management LlcBuy+99,956—99,956$3.95MQ4 2025Feb 17, 2026
Susquehanna Portfolio Strategies, LlcBuy+86,325—86,325$3.42MQ4 2025Feb 17, 2026
Trexquant Investment LpBuy+77,667—77,667$3.07MQ4 2025Feb 17, 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.