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.

Q1 2024 vs. Q4 2023

How the institutions holding AtriCure, Inc. changed between Q4 2023 and Q1 2024.

All holders in Q1 2024 All holders in Q4 2023

13F holders of ATRC: Q4 2023 compared with Q1 2024
Measure	Q4 2023	Of which not filed for Q1 2024	Q1 2024	Change
Holders	233	2	224	−7
Shares	47.2M	43.1K	49.7M	+2.52M (+5.3%)
Value	$1.68B	$1.52M	$1.51B	−$173.5M (−10.3%)

2 institutions that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so the changes leave them out.

New holders (33)

Institutions that held AtriCure, Inc. at the end of Q1 2024 but not at the end of Q4 2023.

Institutions new to ATRC in Q1 2024
Institution	Shares	Value	% of portfolio
Natixis	300,000	$9.13M	0.05%
Holocene Advisors, LP	81,853	$2.49M	0.01%
Millrace Asset Group, Inc.	54,349	$1.65M	1.66%
Man Group plc	31,262	$951.0K	0.00%
Fox Run Management, L.L.C.	27,802	$845.7K	0.18%
Los Angeles Capital Management LLC	27,693	$842.4K	0.00%
Deerfield Management Company, L.P. (Series C)	20,740	$630.9K	0.01%
Dynamic Technology Lab Private Ltd	16,047	$489.0K	0.05%
Nebula Research & Development LLC	15,579	$473.9K	0.10%
Wesbanco Bank Inc	15,525	$472.3K	0.02%
Twinbeech Capital LP	14,122	$429.6K	0.01%
Point72 (DIFC) Ltd	13,971	$425.0K	0.03%
New York Life Investment Management LLC	13,599	$413.7K	0.00%
Bayesian Capital Management, LP	11,300	$343.7K	0.03%
Colony Group, LLC	12,954	$321.0K	0.00%
Bridgefront Capital, LLC	8,668	$263.7K	0.20%
Diversify Advisory Services, LLC	8,865	$257.9K	0.02%
Mount Yale Investment Advisors, LLC	7,375	$224.3K	0.02%
Lowe Brockenbrough & Co Inc	7,000	$212.9K	0.01%
Simplex Trading, LLC	3,991	$121.0K	0.00%
Point72 Asia (Singapore) Pte. Ltd.	3,676	$111.8K	0.03%
Group One Trading, L.P.	2,202	$67.0K	0.00%
Point72 Hong Kong Ltd	1,003	$30.5K	0.00%
Whittier Trust Co	441	$13.4K	0.00%
Nelson, Van Denburg & Campbell Wealth Management Group, LLC	330	$10.0K	0.00%
Clear Street Markets LLC	208	$6.00K	0.00%
Mather Group, LLC.	165	$5.89K	0.00%
Quarry LP	167	$5.08K	0.00%
CIBC Private Wealth Group, LLC	128	$3.72K	0.00%
Continuum Advisory, LLC	24	$528	0.00%
Northwestern Mutual Wealth Management Co	7	$213	0.00%
Versant Capital Management, Inc	7	$213	0.00%
Rothschild Investment LLC	5	$152	0.00%

Sold out (40)

Institutions that held AtriCure, Inc. at the end of Q4 2023 and filed for Q1 2024 without it.

Institutions that sold out of ATRC in Q1 2024
Institution	Shares, Q4 2023	Value, Q4 2023
Hood River Capital Management LLC	841,102	$30.0M
Soleus Capital Management, L.P.	392,195	$14.0M
Thornburg Investment Management Inc	103,215	$3.68M
Oberweis Asset Management Inc	69,100	$2.47M
State of New Jersey Common Pension Fund D	68,188	$2.43M
Ameriprise Financial Inc	58,208	$2.08M
Healthcare of Ontario Pension Plan Trust Fund	56,849	$2.03M
Semanteon Capital Management, LP	32,305	$1.15M
Tudor Investment Corp Et Al	27,247	$972.4K
Point72 Middle East FZE	26,086	$931.0K
Edgestream Partners, L.P.	24,178	$862.9K
Campbell & CO Investment Adviser LLC	22,724	$811.0K
Harbor Capital Advisors, Inc.	22,290	$795.5K
STRS Ohio	21,200	$756.0K
Susquehanna Portfolio Strategies, LLC	19,050	$679.9K
Skandinaviska Enskilda Banken AB (publ)	17,500	$624.6K
Prudential Financial Inc	16,930	$604.2K
Acadian Asset Management LLC	15,235	$542.0K
UBS Oconnor LLC	12,199	$435.4K
Y-Intercept (Hong Kong) Ltd	11,078	$395.4K
Entropy Technologies, LP	9,933	$354.5K
XTX Topco Ltd	7,796	$278.2K
MQS Management LLC	7,698	$274.7K
Aigen Investment Management, LP	7,136	$254.7K
Landscape Capital Management, L.L.C.	6,770	$241.6K
Blair William & Co	6,246	$222.9K
Victory Capital Management Inc	6,202	$221.3K
CenterBook Partners LP	6,055	$216.1K
Virtu Financial LLC	5,979	$213.0K
Advisory Services Network, LLC	498	$17.8K
Robeco Institutional Asset Management B.V.	457	$16.3K
Johnson Financial Group, Inc.	317	$11.3K
Hillsdale Investment Management Inc.	120	$4.28K
Valley National Advisers Inc	65	$2.00K
Private Wealth Management Group, LLC	33	$1.18K
Lindbrook Capital, LLC	30	$1.07K
AlphaMark Advisors, LLC	35	$1.00K
Gradient Investments LLC	12	$428
Massmutual Trust Co FSB	10	$357
Bokf, NA	5	$178

Not filed for Q1 2024 yet (2)

Institutions that held AtriCure, Inc. at the end of Q4 2023 and haven't filed a 13F for Q1 2024. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ATRC in Q4 2023 that haven't filed for Q1 2024
Institution	Shares, Q4 2023	Value, Q4 2023
Putnam Investments LLC	33,708	$1.20M
DFPG Investments, LLC	9,408	$317.1K