AtriCure, Inc. (ATRC) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

26,700,000Shares Outstanding

519,539Shares held by institutions

$17,129,201Value of institutional holdings

181.12%Institutional ownership %

7.54%Shares Changed QoQ

225No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

AtriCure, Inc. (NASDAQ:ATRC) currently has 225 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

The percentage of AtriCure owned by institutions changed from 180.3% in September 2025 to 181.1% in December 2025, marking a slight up trend.
On a quarter-over-quarter basis, institutional holdings shifted by 7.54%, with a year-over-year an increase of 6.13% in the count of filers.
During the quarter, 121 institutions bought more AtriCure shares, 72 sold shares, and 32 of the 225 total investors held their position steady.
This class of investors increased its holdings in AtriCure to 48.36Mn shares for the 13F-cycle ending December 2025, up by 3.39Mn shares quarter on quarter, and up 1.87Mn shares year over year.
With 4.90Mn shares, VANGUARD GROUP INC commands the largest institutional position in AtriCure as of December 31, 2025, equating to 18.37% of the company.
Among the most significant buyers of AtriCure during December 2025 were NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (2.04Mn), Defilade Capital Management, L.P. (397.64K), MARSHALL WACE, LLP (354.28K), First Light Asset Management, LLC (285.08K), Point72 Asset Management, L.P. (277.92K).
Leading sellers of AtriCure stock in December 2025 included Champlain Investment Partners, LLC (804.61K), WELLINGTON MANAGEMENT GROUP LLP (374.10K), Nuveen, LLC (220.32K), MILLENNIUM MANAGEMENT LLC (189.47K), OSTERWEIS CAPITAL MANAGEMENT INC (118.50K).
The top 10 institutional holders of AtriCure for the quarter ending December 2025 included VANGUARD GROUP INC (4.90Mn), BlackRock, Inc. (4.07Mn), WELLINGTON MANAGEMENT GROUP LLP (3.92Mn), ALLIANCEBERNSTEIN L.P. (3.56Mn), Hood River Capital Management LLC (3.10Mn), NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (2.04Mn), STATE STREET CORP (1.24Mn), GEODE CAPITAL MANAGEMENT, LLC (1.19Mn), First Light Asset Management, LLC (1.18Mn), Champlain Investment Partners, LLC (1.17Mn).

225 Institutional Holders

519,539 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
VANGUARD GROUP INC	31 Dec, 2025	4,903,755	62,861	1.30%	$193,992,548.00
BlackRock, Inc.	31 Dec, 2025	4,065,804	68,695	1.72%	$160,843,227.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	3,917,991	-374,096	-8.72%	$154,995,724.00
ALLIANCEBERNSTEIN L.P.	31 Dec, 2025	3,563,582	4,990	0.14%	$140,975,304.00
Hood River Capital Management LLC	31 Dec, 2025	3,096,611	51,024	1.68%	$122,501,931.00
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	31 Dec, 2025	2,038,703	2,038,703	0.00%	$80,651,000.00
STATE STREET CORP	31 Dec, 2025	1,242,374	-21,919	-1.73%	$49,148,315.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,191,498	443	0.04%	$47,143,730.00
First Light Asset Management, LLC	31 Dec, 2025	1,175,445	285,083	32.02%	$46,500,604.00
Champlain Investment Partners, LLC	31 Dec, 2025	1,173,605	-804,608	-40.67%	$46,427,814.00
Neuberger Berman Group LLC	31 Dec, 2025	1,086,326	-104,785	-8.80%	$42,998,602.00
BNP Paribas Asset Management Holding S.A.	31 Dec, 2025	959,294	192,156	25.05%	$37,950.00
GW&K Investment Management, LLC	31 Dec, 2025	952,089	91,054	10.57%	$37,665.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	921,897	71,341	8.39%	$36,472,238.00
MARSHALL WACE, LLP	31 Dec, 2025	913,453	354,281	63.36%	$36,136,202.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	885,062	107,754	13.86%	$35,013,053.00
KENNEDY CAPITAL MANAGEMENT LLC	31 Dec, 2025	837,326	410	0.05%	$33,124,617.00
VOYA INVESTMENT MANAGEMENT LLC	31 Dec, 2025	712,329	5,267	0.74%	$28,179,735.00
BANK OF AMERICA CORP /DE/	31 Dec, 2025	675,731	-49,224	-6.79%	$26,731,929.00
DAFNA Capital Management LLC	31 Dec, 2025	597,431	5,158	0.87%	$23,634,370.00

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