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 Q4 2018?

146 institutional investors reported ATRC - AtriCure, Inc. - Common Stock for Q4 2018. Use the holders table for investor-level position and value details.

AtriCure, Inc. - Common Stock (ATRC)

CUSIP: 04963C209

Q4 2018 13F Holders as of 31 Dec 2018

Type / Class: Equity / Common Stock
Shares outstanding: 49,704,831
Total 13F shares: 34,464,747
Share change: +2,912,866
Total reported value: $1,053,958,551
Put/Call ratio: 4%
Price per share: $30.60
Number of holders: 146
Value change: +$87,376,454
Number of buys: 93
Number of sells: 45

Quarterly Holders Quick Answers

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

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Explore More Reporting Periods

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

Newer quarter: Q1 2019
Previous quarter: Q3 2018

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
FMR LLC	13F	Company	11%	5,304,261	$185,808,000	—	30 Sep 2018	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	6.5%	3,224,825	$112,965,000	—	30 Sep 2018	13F
BlackRock Finance, Inc.	13F	Company	5.6%	2,760,242	$96,691,000	—	30 Sep 2018	13F
Hudson Executive Capital LP	13F	Company	4.8%	2,374,119	$83,165,000	—	30 Sep 2018	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	4.5%	2,214,691	$77,581,000	—	30 Sep 2018	13F
VANGUARD GROUP INC	13F	Company	3.2%	1,588,574	$55,647,000	—	30 Sep 2018	13F
First Light Asset Management, LLC	13F	Company	1.9%	969,193	$33,951,000	—	30 Sep 2018	13F
LOOMIS SAYLES & CO L P	13F	Company	1.8%	911,622	$31,934,000	—	30 Sep 2018	13F
STATE STREET CORP	13F	Company	1.7%	847,923	$29,705,000	—	30 Sep 2018	13F
Neuberger Berman Group LLC	13F	Company	1.5%	736,329	$25,791,000	—	30 Sep 2018	13F
PEREGRINE CAPITAL MANAGEMENT LLC	13F	Company	1.4%	686,557	$24,050,000	—	30 Sep 2018	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	1.3%	670,102	$23,474,000	—	30 Sep 2018	13F
EMERALD ADVISERS, LLC	13F	Company	0.96%	478,696	$16,769,000	—	30 Sep 2018	13F
NORTHERN TRUST CORP	13F	Company	0.9%	448,419	$15,708,000	—	30 Sep 2018	13F
EMERALD MUTUAL FUND ADVISERS TRUST	13F	Company	0.87%	433,912	$15,200,000	—	30 Sep 2018	13F
WASATCH ADVISORS LP	13F	Company	0.8%	399,789	$14,005,000	—	30 Sep 2018	13F
Cortina Asset Management, LLC	13F	Company	0.75%	373,803	$13,094,000	—	30 Sep 2018	13F
ROYCE & ASSOCIATES LP	13F	Company	0.71%	351,445	$12,311,000	—	30 Sep 2018	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.7%	347,400	$12,169,000	—	30 Sep 2018	13F
DAFNA Capital Management LLC	13F	Company	0.59%	293,729	$10,289,000	—	30 Sep 2018	13F
Tamarack Advisers, LP	13F	Company	0.55%	275,000	$9,633,000	—	30 Sep 2018	13F
SECTORAL ASSET MANAGEMENT INC	13F	Company	0.5%	250,824	$8,786,000	—	30 Sep 2018	13F
OBERWEIS ASSET MANAGEMENT INC/	13F	Company	0.48%	238,210	$8,344,000	—	30 Sep 2018	13F
Bank of New York Mellon Corp	13F	Company	0.48%	237,700	$8,326,000	—	30 Sep 2018	13F
MANUFACTURERS LIFE INSURANCE COMPANY, THE	13F	Company	0.47%	231,738	$8,118,000	—	30 Sep 2018	13F
Man Group plc	13F	Company	0.43%	213,402	$7,475,000	—	30 Sep 2018	13F
Fosun International Ltd	13F	Company	0.4%	197,459	$6,858,000	—	30 Sep 2018	13F
ROYAL BANK OF CANADA	13F	Company	0.39%	193,574	$6,781,000	—	30 Sep 2018	13F
GW&K Investment Management, LLC	13F	Company	0.38%	190,372	$6,669,000	—	30 Sep 2018	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.37%	182,384	$6,389,000	—	30 Sep 2018	13F
D. E. Shaw & Co., Inc.	13F	Company	0.35%	174,739	$6,121,000	—	30 Sep 2018	13F
Point72 Asset Management, L.P.	13F	Company	0.35%	174,520	$6,113,000	—	30 Sep 2018	13F
QUANTUM CAPITAL MANAGEMENT	13F	Company	0.31%	154,453	$5,410,000	—	30 Sep 2018	13F
CITADEL ADVISORS LLC	13F	Company	0.3%	150,713	$5,280,000	—	30 Sep 2018	13F
Informed Momentum Co LLC	13F	Company	0.3%	147,410	$5,164,000	—	30 Sep 2018	13F
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	13F	Company	0.29%	145,850	$5,109,000	—	30 Sep 2018	13F
KOPP INVESTMENT ADVISORS LLC	13F	Company	0.29%	144,268	$5,054,000	—	30 Sep 2018	13F
AlphaOne Investment Services, LLC	13F	Company	0.28%	140,369	$4,917,000	—	30 Sep 2018	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.27%	135,792	$4,757,000	—	30 Sep 2018	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.23%	112,205	$3,931,000	—	30 Sep 2018	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.22%	108,920	$3,816,000	—	30 Sep 2018	13F
TWO SIGMA ADVISERS, LP	13F	Company	0.2%	101,600	$3,559,000	—	30 Sep 2018	13F
PRUDENTIAL FINANCIAL INC	13F	Company	0.2%	97,005	$3,398,000	—	30 Sep 2018	13F
Nuveen Asset Management, LLC	13F	Company	0.19%	92,938	$3,256,000	—	30 Sep 2018	13F
DEUTSCHE BANK AG\	13F	Company	0.17%	86,791	$3,040,000	—	30 Sep 2018	13F
TEACHERS ADVISORS, LLC	13F	Company	0.17%	84,847	$2,972,000	—	30 Sep 2018	13F
MORGAN STANLEY	13F	Company	0.16%	79,053	$2,769,000	—	30 Sep 2018	13F
PERKINS CAPITAL MANAGEMENT INC	13F	Company	0.15%	76,250	$2,671,000	—	30 Sep 2018	13F
OXFORD ASSET MANAGEMENT LLP	13F	Company	0.15%	74,272	$2,578,000	—	30 Sep 2018	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.14%	67,768	$2,374,000	—	30 Sep 2018	13F

Institutional Holders of AtriCure, Inc. - Common Stock (ATRC) as of Q4 2018

As of 31 Dec 2018, AtriCure, Inc. - Common Stock (ATRC) was held by 146 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 34,464,747 shares. The largest 10 holders included FMR LLC, BlackRock Inc., WELLINGTON MANAGEMENT GROUP LLP, PRICE T ROWE ASSOCIATES INC /MD/, Vanguard Group Inc, Hudson Executive Capital LP, First Light Asset Management, LLC, LOOMIS SAYLES & CO L P, STATE STREET CORP, and MILLENNIUM MANAGEMENT LLC. This page lists 146 institutional shareholders reporting positions in this security for the Q4 2018 filing period.

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

Compare Q4 2018 vs Q3 2018 Across Filers

Q3 2018 holders

126

Q4 2018 holders

146

Holder diff

Investor	Q3 2018 Shares	Q4 2018 Shares	Share Diff	Share Chg %	Q3 2018 Value $	Q4 2018 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.