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 2014?

113 institutional investors reported ATRC - AtriCure, Inc. - Common Stock for Q1 2014. Use the holders table for investor-level position and value details.

AtriCure, Inc. - Common Stock (ATRC)

CUSIP: 04963C209

Q1 2014 13F Holders as of 31 Mar 2014

Type / Class: Equity / Common Stock
Shares outstanding: 49,704,831
Total 13F shares: 22,218,123
Share change: +6,255,692
Total reported value: $417,693,024
Put/Call ratio: 9.4%
Price per share: $18.81
Number of holders: 113
Value change: +$117,712,646
Number of buys: 80
Number of sells: 32

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?
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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 2014
Previous quarter: Q4 2013

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
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F	Company	2.4%	1,212,204	$22,644,000	—	31 Dec 2013	13F
THB ASSET MANAGEMENT	13F	Company	2.1%	1,067,913	$19,948,000	—	31 Dec 2013	13F
Cortina Asset Management, LLC	13F	Company	1.7%	857,041	$16,010,000	—	31 Dec 2013	13F
Tamarack Capital Management, LLC	13F	Company	1.7%	841,600	$15,721,000	—	31 Dec 2013	13F
WASATCH ADVISORS LP	13F	Company	1.7%	835,624	$15,609,000	—	31 Dec 2013	13F
FMR LLC	13F	Company	1.6%	800,000	$14,944,000	—	31 Dec 2013	13F
NORTHPOINTE CAPITAL LLC	13F	Company	1.5%	721,976	$13,484,000	—	31 Dec 2013	13F
First Light Asset Management, LLC	13F	Company	1.2%	599,048	$11,190,000	—	31 Dec 2013	13F
BlackRock Fund Advisors	13F	Company	1.1%	565,700	$10,567,000	—	31 Dec 2013	13F
VANGUARD GROUP INC	13F	Company	1%	521,066	$9,734,000	—	31 Dec 2013	13F
DAFNA Capital Management LLC	13F	Company	0.92%	456,701	$8,531,000	—	31 Dec 2013	13F
MANUFACTURERS LIFE INSURANCE COMPANY, THE	13F	Company	0.91%	453,901	$8,479,000	—	31 Dec 2013	13F
Broadfin Capital, LLC	13F	Company	0.88%	437,495	$8,172,000	—	31 Dec 2013	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	0.86%	425,340	$7,945,000	—	31 Dec 2013	13F
BlackRock Institutional Trust Company, N.A.	13F	Company	0.83%	411,393	$7,685,000	—	31 Dec 2013	13F
DEUTSCHE BANK AG\	13F	Company	0.76%	378,879	$7,075,000	—	31 Dec 2013	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.72%	359,249	$6,711,000	—	31 Dec 2013	13F
CASTLEARK MANAGEMENT LLC	13F	Company	0.68%	338,536	$6,324,000	—	31 Dec 2013	13F
NORTHERN TRUST CORP	13F	Company	0.59%	293,610	$5,485,000	—	31 Dec 2013	13F
STATE STREET CORP	13F	Company	0.59%	293,310	$5,478,000	—	31 Dec 2013	13F
Informed Momentum Co LLC	13F	Company	0.49%	244,883	$4,574,000	—	31 Dec 2013	13F
Manatuck Hill Partners, LLC	13F	Company	0.46%	229,500	$4,287,000	—	31 Dec 2013	13F
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	13F	Company	0.45%	222,310	$4,152,751	—	31 Dec 2013	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.44%	216,851	$4,051,000	—	31 Dec 2013	13F
CATAPULT CAPITAL MANAGEMENT LLC	13F	Company	0.43%	215,030	$4,017,000	—	31 Dec 2013	13F
PERKINS CAPITAL MANAGEMENT INC	13F	Company	0.39%	191,835	$3,583,000	—	31 Dec 2013	13F
KOPP INVESTMENT ADVISORS LLC	13F	Company	0.37%	186,280	$3,480,000	—	31 Dec 2013	13F
WALL STREET ASSOCIATES	13F	Company	0.35%	175,397	$3,276,000	—	31 Dec 2013	13F
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	13F	Company	0.32%	159,641	$2,982,000	—	31 Dec 2013	13F
TFS CAPITAL LLC	13F	Company	0.32%	157,642	$2,945,000	—	31 Dec 2013	13F
BRIDGEWAY CAPITAL MANAGEMENT, LLC	13F	Company	0.27%	134,300	$2,509,000	—	31 Dec 2013	13F
Allianz Asset Management GmbH	13F	Company	0.24%	119,881	$2,239,000	—	31 Dec 2013	13F
KENNEDY CAPITAL MANAGEMENT LLC	13F	Company	0.23%	112,007	$2,092,000	—	31 Dec 2013	13F
Numeric Investors LLC	13F	Company	0.22%	108,350	$2,024,000	—	31 Dec 2013	13F
Bank of New York Mellon Corp	13F	Company	0.19%	92,166	$1,722,000	—	31 Dec 2013	13F
ESSEX INVESTMENT MANAGEMENT CO LLC	13F	Company	0.18%	87,875	$1,642,000	—	31 Dec 2013	13F
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	13F	Company	0.18%	87,329	$1,631,000	—	31 Dec 2013	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.17%	83,454	$1,559,000	—	31 Dec 2013	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.16%	79,318	$1,481,000	—	31 Dec 2013	13F
Skylands Capital, LLC	13F	Company	0.16%	78,200	$1,461,000	—	31 Dec 2013	13F
EVENTIDE ASSET MANAGEMENT, LLC	13F	Company	0.14%	69,300	$1,295,000	—	31 Dec 2013	13F
DRIEHAUS CAPITAL MANAGEMENT LLC	13F	Company	0.14%	69,094	$1,291,000	—	31 Dec 2013	13F
BlackRock Investment Management, LLC	13F	Company	0.12%	57,925	$1,082,000	—	31 Dec 2013	13F
KEYBANK NATIONAL ASSOCIATION/OH	13F	Company	0.1%	48,753	$911,000	—	31 Dec 2013	13F
WHITE PINE CAPITAL LLC	13F	Company	0.1%	48,525	$906,000	—	31 Dec 2013	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.09%	45,000	$843,000	—	31 Dec 2013	13F
Weiss Multi-Strategy Advisers LLC	13F	Company	0.08%	42,000	$785,000	—	31 Dec 2013	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	0.08%	41,304	$772,000	—	31 Dec 2013	13F
RAYMOND JAMES & ASSOCIATES	13F	Company	0.08%	40,000	$747,000	—	31 Dec 2013	13F
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	13F	Company	0.08%	37,930	$709,000	—	31 Dec 2013	13F

Institutional Holders of AtriCure, Inc. - Common Stock (ATRC) as of Q1 2014

As of 31 Mar 2014, AtriCure, Inc. - Common Stock (ATRC) was held by 113 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 22,218,123 shares. The largest 10 holders included ADAGE CAPITAL PARTNERS GP LLC, Cortina Asset Management, LLC, THOMSON HORSTMANN & BRYANT INC, Polar Capital LLP, FMR LLC, NORTHPOINTE CAPITAL LLC, MILLENNIUM MANAGEMENT LLC, Broadfin Capital, LLC, BlackRock Fund Advisors, and VANGUARD GROUP INC. This page lists 113 institutional shareholders reporting positions in this security for the Q1 2014 filing period.

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

Compare Q1 2014 vs Q4 2013 Across Filers

Q4 2013 holders

Q1 2014 holders

113

Holder diff

Investor	Q4 2013 Shares	Q1 2014 Shares	Share Diff	Share Chg %	Q4 2013 Value $	Q1 2014 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.