What does CUSIP 04963C209 represent in this 13F holders report?

CUSIP 04963C209 is the security identifier for ATRC - AtriCure, Inc. - Common Stock used to aggregate holder disclosures.

How many institutions held ATRC - AtriCure, Inc. - Common Stock in Q1 2021?

184 institutional investors reported ATRC - AtriCure, Inc. - Common Stock for Q1 2021. Use the holders table for investor-level position and value details.

AtriCure, Inc. - Common Stock (ATRC)

CUSIP: 04963C209

Q1 2021 13F Holders as of 31 Mar 2021

Type / Class: Equity / Common Stock
Shares outstanding: 49,704,831
Total 13F shares: 44,587,200
Share change: +1,157,006
Total reported value: $2,919,424,135
Put/Call ratio: 9.2%
Price per share: $65.52
Number of holders: 184
Value change: +$101,599,138
Number of buys: 79
Number of sells: 108

Quarterly Holders Quick Answers

What is CUSIP 04963C209?
CUSIP 04963C209 identifies ATRC - AtriCure, Inc. - Common Stock in SEC institutional holdings data.

Need full ownership history?
Open the full security ownership history page.

Related Filing Research

Latest 13F filings for newly reported positions.
Latest Schedule 13D/13G reports for ownership changes outside 13F cadence.
Latest 10-Q/10-K reports for financial context tied to this issuer.
Recent insider transactions for executive and insider activity.
SEC investors directory and top value investors for manager drilldown.
Back to full security ownership history.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2021
Previous quarter: Q4 2020

Recent filing periods for CUSIP 04963C209:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of ATRC - AtriCure, Inc. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
BlackRock Finance, Inc.	13F	Company	7.6%	3,762,598	$209,463,000	—	31 Dec 2020	13F
FRED ALGER MANAGEMENT, LLC	13F	Company	5.8%	2,860,522	$159,245,000	—	31 Dec 2020	13F
VANGUARD GROUP INC	13F	Company	4.9%	2,420,467	$134,748,000	—	31 Dec 2020	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	4.7%	2,331,433	$129,791,000	—	31 Dec 2020	13F
Invesco Ltd.	13F	Company	4.5%	2,252,138	$125,377,000	—	31 Dec 2020	13F
Champlain Investment Partners, LLC	13F	Company	4.3%	2,135,580	$118,888,000	—	31 Dec 2020	13F
FMR LLC	13F	Company	3.8%	1,901,299	$105,845,000	—	31 Dec 2020	13F
TimesSquare Capital Management, LLC	13F	Company	2.8%	1,407,044	$78,330,000	—	31 Dec 2020	13F
ORBIMED ADVISORS LLC	13F	Company	2.5%	1,228,189	$68,373,000	—	31 Dec 2020	13F
CREDIT SUISSE AG/	13F	Company	2.1%	1,057,824	$58,889,000	—	31 Dec 2020	13F
STATE STREET CORP	13F	Company	2.1%	1,056,182	$58,798,000	—	31 Dec 2020	13F
EAGLE ASSET MANAGEMENT INC	13F	Company	1.9%	952,954	$53,050,000	—	31 Dec 2020	13F
LOOMIS SAYLES & CO L P	13F	Company	1.9%	922,526	$51,357,000	—	31 Dec 2020	13F
GW&K Investment Management, LLC	13F	Company	1.7%	863,880	$48,092,000	—	31 Dec 2020	13F
Fiera Capital Corp	13F	Company	1.6%	809,760	$45,080,000	—	31 Dec 2020	13F
First Light Asset Management, LLC	13F	Company	1.6%	809,310	$45,054,000	—	31 Dec 2020	13F
PURA VIDA INVESTMENTS, LLC	13F	Company	1.4%	715,649	$39,840,000	—	31 Dec 2020	13F
Neuberger Berman Group LLC	13F	Company	1.4%	711,949	$39,442,000	—	31 Dec 2020	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	1.4%	691,551	$38,498,000	—	31 Dec 2020	13F
SECTORAL ASSET MANAGEMENT INC	13F	Company	1.3%	644,217	$35,864,000	—	31 Dec 2020	13F
BNP Paribas Asset Management Holding S.A.	13F	Company	1.2%	609,386	$33,925,000	—	31 Dec 2020	13F
CARILLON TOWER ADVISERS, INC.	13F	Company	1.2%	588,551	$32,765,000	—	31 Dec 2020	13F
Bellevue Group AG	13F	Company	1.1%	556,374	$30,973,000	—	31 Dec 2020	13F
NORTHERN TRUST CORP	13F	Company	1.1%	555,813	$30,943,000	—	31 Dec 2020	13F
WASATCH ADVISORS LP	13F	Company	1.1%	541,545	$30,148,000	—	31 Dec 2020	13F
EMERALD ADVISERS, LLC	13F	Company	1.1%	536,099	$29,845,000	—	31 Dec 2020	13F
EMERALD MUTUAL FUND ADVISERS TRUST	13F	Company	1%	518,036	$28,839,000	—	31 Dec 2020	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	1%	516,552	$28,756,000	—	31 Dec 2020	13F
MACQUARIE GROUP LTD	13F	Company	0.97%	480,477	$26,748,000	—	31 Dec 2020	13F
Avidity Partners Management LP	13F	Company	0.9%	446,600	$24,862,000	—	31 Dec 2020	13F
Nuveen Asset Management, LLC	13F	Company	0.87%	434,578	$24,194,000	—	31 Dec 2020	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.87%	432,161	$24,058,000	—	31 Dec 2020	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.84%	418,441	$23,295,000	—	31 Dec 2020	13F
Polar Capital Holdings Plc	13F	Company	0.83%	411,976	$22,935,000	—	31 Dec 2020	13F
PEREGRINE CAPITAL MANAGEMENT LLC	13F	Company	0.75%	375,110	$20,882,000	—	31 Dec 2020	13F
Tamarack Advisers, LP	13F	Company	0.74%	366,400	$19,632,000	—	31 Dec 2020	13F
Bank of New York Mellon Corp	13F	Company	0.66%	329,250	$18,330,000	—	31 Dec 2020	13F
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	13F	Company	0.61%	304,176	$16,933,478	—	31 Dec 2020	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.59%	295,582	$16,456,000	—	31 Dec 2020	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	0.57%	284,189	$15,820,000	—	31 Dec 2020	13F
CITADEL ADVISORS LLC	13F	Company	0.54%	266,463	$14,834,000	—	31 Dec 2020	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.48%	236,931	$13,190,000	—	31 Dec 2020	13F
SILVERCREST ASSET MANAGEMENT GROUP LLC	13F	Company	0.45%	221,732	$12,344,000	—	31 Dec 2020	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.45%	221,399	$12,325,000	—	31 Dec 2020	13F
MARSHALL WACE, LLP	13F	Company	0.44%	220,737	$12,288,000	—	31 Dec 2020	13F
Man Group plc	13F	Company	0.44%	217,848	$12,128,000	—	31 Dec 2020	13F
STATE OF WISCONSIN INVESTMENT BOARD	13F	Company	0.39%	195,600	$10,889,000	—	31 Dec 2020	13F
ROTHSCHILD & CO ASSET MANAGEMENT US INC.	13F	Company	0.34%	168,831	$9,399,000	—	31 Dec 2020	13F
Granahan Investment Management, LLC	13F	Company	0.33%	165,107	$9,192,000	—	31 Dec 2020	13F
BALYASNY ASSET MANAGEMENT L.P.	13F	Company	0.31%	156,524	$8,714,000	—	31 Dec 2020	13F

Institutional Holders of AtriCure, Inc. - Common Stock (ATRC) as of Q1 2021

As of 31 Mar 2021, AtriCure, Inc. - Common Stock (ATRC) was held by 184 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 44,587,200 shares. The largest 10 holders included BlackRock Inc., VANGUARD GROUP INC, FRED ALGER MANAGEMENT, LLC, ALLIANCEBERNSTEIN L.P., Invesco Ltd., PRICE T ROWE ASSOCIATES INC /MD/, Champlain Investment Partners, LLC, CREDIT SUISSE AG/, TimesSquare Capital Management, LLC, and FMR LLC. This page lists 184 institutional shareholders reporting positions in this security for the Q1 2021 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

191

Q1 2021 holders

184

Holder diff

-7

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 Value $	Q1 2021 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.