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 2024 vs. Q2 2024

How the institutions holding AtriCure, Inc. changed between Q2 2024 and Q3 2024.

All holders in Q3 2024 All holders in Q2 2024

13F holders of ATRC: Q2 2024 compared with Q3 2024
Measure	Q2 2024	Of which not filed for Q3 2024	Q3 2024	Change
Holders	198	2	202	+6
Shares	50.8M	4.87M	49.4M	+3.50M (+7.6%)
Value	$1.16B	$110.8M	$1.39B	+$340.8M (+32.6%)

2 institutions that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so the changes leave them out.

New holders (40)

Institutions that held AtriCure, Inc. at the end of Q3 2024 but not at the end of Q2 2024.

Institutions new to ATRC in Q3 2024
Institution	Shares	Value	% of portfolio
BlackRock, Inc.	4,305,835	$120.7M	0.00%
Divisadero Street Capital Management, LP	1,295,706	$36.3M	4.67%
Balyasny Asset Management LLC	154,920	$4.34M	0.01%
Lighthouse Investment Partners, LLC	131,711	$3.69M	0.20%
Calamos Advisors LLC	86,524	$2.43M	0.01%
SG Capital Management LLC	72,589	$2.04M	0.29%
Healthcare of Ontario Pension Plan Trust Fund	71,000	$1.99M	0.00%
Atom Investors LP	62,095	$1.74M	0.18%
Arizona PSPRS Trust	59,103	$1.66M	0.07%
Altium Capital Management LP	54,000	$1.51M	0.45%
Gilder Gagnon Howe & Co LLC	47,323	$1.33M	0.02%
Aquatic Capital Management LLC	39,000	$1.09M	0.03%
B. Metzler seel. Sohn & Co. Holding AG	31,366	$879.5K	0.01%
G2 Investment Partners Management LLC	27,692	$776.5K	0.22%
PDT Partners, LLC	23,701	$664.6K	0.06%
Y-Intercept (Hong Kong) Ltd	21,884	$613.6K	0.04%
SG Americas Securities, LLC	17,393	$488.0K	0.00%
Brevan Howard Capital Management LP	16,741	$469.4K	0.02%
Intech Investment Management LLC	15,214	$426.6K	0.00%
Alberta Investment Management Corp	13,367	$374.8K	0.00%
Susquehanna International Group, LLP	12,384	$347.2K	0.00%
Creative Planning	11,443	$320.9K	0.00%
QRG Capital Management, Inc.	9,826	$275.5K	0.00%
ProShare Advisors LLC	8,945	$250.8K	0.00%
Delap Wealth Advisory, LLC	8,674	$243.2K	0.15%
Captrust Financial Advisors	8,191	$229.7K	0.00%
Petrus Trust Company, LTA	7,560	$212.0K	0.02%
AlTi Global, Inc.	7,263	$203.7K	0.00%
Arcadia Investment Management Corp	1,000	$28.0K	0.00%
Larson Financial Group LLC	355	$9.95K	0.00%
Venturi Wealth Management, LLC	157	$4.40K	0.00%
Capital Performance Advisors LLP	130	$3.65K	0.00%
Johnson Financial Group, Inc.	126	$3.53K	0.00%
National Bank of Canada	112	$3.14K	0.00%
Sterling Capital Management LLC	92	$2.58K	0.00%
Simplex Trading, LLC	73	$2.00K	0.00%
Truvestments Capital LLC	54	$1.51K	0.00%
True Wealth Design, LLC	15	$421	0.00%
Planning Capital Management Corp	1	$29	0.00%
Avion Wealth	19	$0	0.00%

Sold out (34)

Institutions that held AtriCure, Inc. at the end of Q2 2024 and filed for Q3 2024 without it.

Institutions that sold out of ATRC in Q3 2024
Institution	Shares, Q2 2024	Value, Q2 2024
Fiera Capital Corp	918,207	$20.9M
Bellevue Group AG	212,559	$4.84M
Adage Capital Partners GP, L.L.C.	150,000	$3.42M
Tudor Investment Corp Et Al	87,974	$2.00M
Gsa Capital Partners LLP	39,188	$892.0K
Knights of Columbus Asset Advisors LLC	33,234	$756.7K
Los Angeles Capital Management LLC	24,535	$558.7K
Qube Research & Technologies Ltd	22,019	$501.4K
Quantbot Technologies LP	21,468	$488.8K
Stifel Financial Corp	20,221	$460.4K
Man Group plc	18,570	$422.8K
Deerfield Management Company, L.P. (Series C)	17,068	$388.6K
Colony Group, LLC	16,140	$384.0K
Occudo Quantitative Strategies LP	16,682	$379.8K
Wesbanco Bank Inc	15,525	$353.5K
Centiva Capital, LP	10,959	$249.5K
Oppenheimer Asset Management Inc.	10,462	$238.2K
Harbert Fund Advisors, Inc.	10,000	$227.7K
Mount Yale Investment Advisors, LLC	9,743	$221.8K
Virtus Investment Advisers, Inc.	4,205	$95.7K
Lazard Asset Management LLC	2,940	$66.0K
Virtus Fund Advisers, LLC	810	$18.4K
Quarry LP	451	$10.3K
Opal Wealth Advisors, LLC	318	$7.24K
Caption Management, LLC	270	$6.15K
Ashton Thomas Private Wealth, LLC	188	$4.28K
Massmutual Trust Co FSB	76	$1.73K
Stephens Consulting, LLC	51	$1.16K
Valley National Advisers Inc	50	$1.00K
Innealta Capital, LLC	33	$751
Park Place Capital Corp	31	$706
Continuum Advisory, LLC	24	$546
GWM Advisors LLC	10	$228
Global Retirement Partners, LLC	7	$159

Not filed for Q3 2024 yet (2)

Institutions that held AtriCure, Inc. at the end of Q2 2024 and haven't filed a 13F for Q3 2024. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ATRC in Q2 2024 that haven't filed for Q3 2024
Institution	Shares, Q2 2024	Value, Q2 2024
BlackRock Inc.	4,615,791	$105.1M
Kent Lake Capital LLC	250,000	$5.69M