AtriCure, Inc.

ATRC

Exchange: Nasdaq
Industry: Surgical & Medical Instruments & Apparatus
SEC CIK: 0001323885

SEC filings (opens in a new tab)

In the last 90 days, AtriCure, Inc. insiders filed 0 open-market purchases and 10 sales; 251 institutions reported holding it in 13F filings for Q2 2026, worth $1.47B in total; no superinvestor holds it.

Q3 2025 vs. Q2 2025

How the institutions holding AtriCure, Inc. changed between Q2 2025 and Q3 2025.

All holders in Q3 2025 All holders in Q2 2025

13F holders of ATRC: Q2 2025 compared with Q3 2025
Measure	Q2 2025	Of which not filed for Q3 2025	Q3 2025	Change
Holders	202	2	223	+23
Shares	48.9M	12.0K	48.2M	−753.1K (−1.5%)
Value	$1.60B	$393.6K	$1.70B	+$95.0M (+5.9%)

2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (33)

Institutions that held AtriCure, Inc. at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to ATRC in Q3 2025
Institution	Shares	Value	% of portfolio
Massachusetts Financial Services Co	424,681	$15.0M	0.00%
Point72 (DIFC) Ltd	262,065	$9.24M	0.64%
Oberweis Asset Management Inc	153,500	$5.41M	0.21%
Grandeur Peak Global Advisors, LLC	78,900	$2.78M	0.37%
Trexquant Investment LP	66,520	$2.34M	0.02%
Jump Financial, LLC	39,589	$1.40M	0.02%
Cubist Systematic Strategies, LLC	37,434	$1.32M	0.02%
Aquatic Capital Management LLC	23,015	$811.3K	0.02%
Ameriprise Financial Inc	21,889	$771.6K	0.00%
Semanteon Capital Management, LP	16,001	$564.0K	0.71%
Versor Investments LP	15,135	$533.5K	0.10%
Schonfeld Strategic Advisors LLC	12,022	$423.8K	0.00%
R Squared Ltd	7,582	$267.3K	0.12%
Y-Intercept (Hong Kong) Ltd	7,517	$265.0K	0.01%
Hohimer Wealth Management, LLC	7,000	$246.8K	0.03%
Omers Administration Corp	6,300	$222.1K	0.00%
Verdence Capital Advisors LLC	5,996	$218.7K	0.01%
M&T Bank Corp	6,156	$216.6K	0.00%
Quadrant Capital Group LLC	5,622	$198.2K	0.01%
Globeflex Capital L P	4,456	$157.1K	0.02%
State of Alaska, Department of Revenue	2,871	$101.0K	0.00%
Rockefeller Capital Management L.P.	2,778	$97.9K	0.00%
Point72 Asia (Singapore) Pte. Ltd.	2,270	$80.0K	0.01%
First Horizon Corp	1,198	$42.2K	0.00%
Point72 Europe (London) LLP	579	$20.4K	0.00%
Canada Pension Plan Investment Board	400	$14.1K	0.00%
Optiver Holding B.V.	252	$8.88K	0.00%
Mather Group, LLC.	195	$6.87K	0.00%
Fifth Third Bancorp	36	$1.27K	0.00%
Caitong International Asset Management Co., Ltd	22	$776	0.00%
Advisory Services Network, LLC	2	$71	0.00%
SBI Securities Co., Ltd.	2	$71	0.00%
TFC Financial Management	1	$36	0.00%

Sold out (10)

Institutions that held AtriCure, Inc. at the end of Q2 2025 and filed for Q3 2025 without it.

Institutions that sold out of ATRC in Q3 2025
Institution	Shares, Q2 2025	Value, Q2 2025
Susquehanna International Group, LLP	66,170	$2.17M
Assenagon Asset Management S.A.	47,002	$1.54M
Natixis	18,800	$616.1K
Petrus Trust Company, LTA	12,601	$412.9K
Calamos Advisors LLC	12,126	$397.4K
Campbell & CO Investment Adviser LLC	8,681	$284.5K
D. E. Shaw & Co., Inc.	7,776	$254.8K
Bailard, Inc.	6,500	$213.0K
Northwestern Mutual Wealth Management Co	125	$4.10K
Central Trust Co	35	$1.15K

Not filed for Q3 2025 yet (2)

Institutions that held AtriCure, Inc. at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ATRC in Q2 2025 that haven't filed for Q3 2025
Institution	Shares, Q2 2025	Value, Q2 2025
Norges Bank	10,438	$342.1K
First Horizon Advisors, Inc.	1,572	$51.5K