AtriCure ATRC Institutional Ownership

NASDAQ ATRC

$55.11 -1.09 (-1.94%)

As of: Oct 1, 2026 · 10:06 AM EDT

Institutions by Trading Activity

254 Institutions

Increased 156 61.4%

Unchanged 36 14.2%

Reduced 62 24.4%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

108.73%

▲+5.24 pp QoQ

Shares Held by Institutions

52.92Mn

of 48.67Mn outstanding

▲+6.74% QoQ

Shares Outstanding

48.67Mn

-4.25Mn held outside 13F filers

Institutional Investors

254

filed 13F for Jun 2026

▲+31 vs prior quarter

Net Shares Added (QoQ)

+3.34Mn

accumulated since last quarter

Value of Holdings

$2.97Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

AtriCure, Inc. (NASDAQ:ATRC) has 254 institutional investors with active 13F positions as of June 2026.

Their combined ownership stood at 108.7% of outstanding shares in June 2026, up from 103.5% in March 2026.
Their total shares held in ATRC increased 6.74% from the prior quarter, while the number of investors in AtriCure increased 27.0% year over year.
Of these 254 holders, 156 added to their stakes in AtriCure, 62 trimmed positions, and 36 made no changes.
Institutional investors collectively held 52.92Mn shares in AtriCure as of June 2026, up by 3.34Mn shares quarter on quarter, and up 4.4Mn shares year over year.
BlackRock, Inc. holds the largest position in ATRC at 4.47Mn shares as of June 30, 2026, or 9.19% of shares outstanding.
The largest buyers of AtriCure for the quarter ending June 2026 were ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (1.02Mn), Point72 Asset Management, L.P. (604.38K), BlackRock, Inc. (431.87K), VANGUARD PORTFOLIO MANAGEMENT LLC (424.56K), Sixth Street Partners Management Company, L.P. (423.11K).
The biggest sellers of AtriCure for the quarter ending June 2026 included VOYA INVESTMENT MANAGEMENT LLC (691.34K), ALLIANCEBERNSTEIN L.P. (490.51K), UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC (423.26K), Divisadero Street Capital Management, LP (359.02K), Morgan Stanley (261.36K).
According to Business Quant data, leading holders of ATRC for June 2026 are BlackRock, Inc. (4.47Mn), WELLINGTON MANAGEMENT GROUP LLP (3.5Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (3.13Mn), Hood River Capital Management LLC (2.91Mn), ALLIANCEBERNSTEIN L.P. (2.77Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.19Mn), NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (1.73Mn), Goldman Sachs Group Inc (1.6Mn), State Street Corp (1.39Mn), MARSHALL WACE, LLP (1.33Mn).

Form 13F Holdings

254 Institutional Holders

Report period 30 Jun, 2026

Total shares held 52.92Mn

Of outstanding 108.73%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	4,474,548	9.19%	▲431,867	+10.68%	$125.20Mn
2	WELLINGTON MANAGEMENT GROUP LLP	0000902219	3,495,603	7.18%	▲113,048	+3.34%	$97.81Mn
3	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	3,127,195	6.43%	▲424,563	+15.71%	$87.50Mn
4	Hood River Capital Management LLC	0001578177	2,905,299	5.97%	▼212,246	-6.81%	$81.29Mn
5	ALLIANCEBERNSTEIN L.P.	0001109448	2,768,365	5.69%	▼490,507	-15.05%	$78.98Mn
6	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,190,413	4.50%	▲34,649	+1.61%	$61.29Mn
7	NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	0000921739	1,734,279	3.56%	▼70,648	-3.91%	$48.53Mn
8	Goldman Sachs Group Inc	0000886982	1,597,988	3.28%	▼69,178	-4.15%	$44.71Mn
9	State Street Corp	0000093751	1,389,989	2.86%	▲87,827	+6.74%	$38.94Mn
10	MARSHALL WACE, LLP	0001318757	1,333,904	2.74%	▼133,620	-9.11%	$37.32Mn
11	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,319,687	2.71%	▲93,571	+7.63%	$36.93Mn
12	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	1,296,209	2.66%	▲1,018,527	+366.80%	$36.27Mn
13	DIMENSIONAL FUND ADVISORS LP	0000354204	1,044,034	2.15%	▲46,275	+4.64%	$29.22Mn
14	GW&K Investment Management, LLC	0001082917	949,516	1.95%	▼13,899	-1.44%	$26.57K
15	Neuberger Berman Group LLC	0001465109	947,982	1.95%	▼102,300	-9.74%	$26.58Mn
16	Champlain Investment Partners, LLC	0001315478	938,567	1.93%	▼32,544	-3.35%	$26.26Mn
17	BNP Paribas Asset Management Holding S.A.	0001520354	897,419	1.84%	▼163,387	-15.40%	$25.11Mn
18	Bank Of America Corp /De/	0000070858	874,370	1.80%	▲105,809	+13.77%	$24.46Mn
19	KENNEDY CAPITAL MANAGEMENT LLC	0000884589	857,787	1.76%	▲23,632	+2.83%	$24.00Mn
20	Divisadero Street Capital Management, LP	0001901865	800,931	1.65%	▼359,024	-30.95%	$22.41Mn

Showing 1 to 20 of 254 holders