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 2015?

116 institutional investors reported ATRC - AtriCure, Inc. - Common Stock for Q4 2015. Use the holders table for investor-level position and value details.

AtriCure, Inc. - Common Stock (ATRC)

CUSIP: 04963C209

Q4 2015 13F Holders as of 31 Dec 2015

Type / Class: Equity / Common Stock
Shares outstanding: 49,704,831
Total 13F shares: 26,812,438
Share change: -669,562
Total reported value: $601,390,870
Price per share: $22.44
Number of holders: 116
Value change: -$14,290,126
Number of buys: 47
Number of sells: 62

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 2016
Previous quarter: Q3 2015

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
RS INVESTMENT MANAGEMENT CO LLC	13F	Company	4.5%	2,213,351	$48,495,000	—	30 Sep 2015	13F
FMR LLC	13F	Company	3.7%	1,820,000	$39,876,000	—	30 Sep 2015	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	3.4%	1,713,605	$37,545,000	—	30 Sep 2015	13F
COLUMBUS CIRCLE INVESTORS	13F	Company	2%	988,373	$21,655,000	—	30 Sep 2015	13F
VANGUARD GROUP INC	13F	Company	2%	974,343	$21,348,000	—	30 Sep 2015	13F
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F	Company	1.9%	962,887	$21,097,000	—	30 Sep 2015	13F
First Light Asset Management, LLC	13F	Company	1.8%	899,362	$19,705,000	—	30 Sep 2015	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	1.7%	854,769	$18,728,000	—	30 Sep 2015	13F
Tamarack Capital Management, LLC	13F	Company	1.7%	825,000	$18,076,000	—	30 Sep 2015	13F
DRIEHAUS CAPITAL MANAGEMENT LLC	13F	Company	1.6%	812,198	$17,795,000	—	30 Sep 2015	13F
BlackRock Fund Advisors	13F	Company	1.5%	737,728	$16,164,000	—	30 Sep 2015	13F
Cortina Asset Management, LLC	13F	Company	1.3%	643,688	$14,103,000	—	30 Sep 2015	13F
EMERALD ADVISERS, LLC	13F	Company	1.2%	612,039	$13,410,000	—	30 Sep 2015	13F
EMERALD MUTUAL FUND ADVISERS TRUST	13F	Company	1.2%	606,419	$13,287,000	—	30 Sep 2015	13F
WELLS FARGO & COMPANY/MN	13F	Company	1.1%	548,180	$12,011,000	—	30 Sep 2015	13F
Granahan Investment Management, LLC	13F	Company	1.1%	536,007	$11,744,000	—	30 Sep 2015	13F
NORTHPOINTE CAPITAL LLC	13F	Company	1%	507,795	$11,126,000	—	30 Sep 2015	13F
DAFNA Capital Management LLC	13F	Company	0.98%	487,946	$10,691,000	—	30 Sep 2015	13F
BlackRock Institutional Trust Company, N.A.	13F	Company	0.94%	466,953	$10,231,000	—	30 Sep 2015	13F
ROYCE & ASSOCIATES LP	13F	Company	0.9%	446,000	$9,772,000	—	30 Sep 2015	13F
WADDELL & REED FINANCIAL INC	13F	Company	0.9%	445,800	$9,767,000	—	30 Sep 2015	13F
STATE STREET CORP	13F	Company	0.88%	438,637	$9,606,000	—	30 Sep 2015	13F
LORD, ABBETT & CO. LLC	13F	Company	0.86%	427,559	$9,368,000	—	30 Sep 2015	13F
WASATCH ADVISORS LP	13F	Company	0.86%	426,597	$9,347,000	—	30 Sep 2015	13F
Broadfin Capital, LLC	13F	Company	0.81%	403,519	$8,841,000	—	30 Sep 2015	13F
NORTHERN TRUST CORP	13F	Company	0.74%	365,983	$8,019,000	—	30 Sep 2015	13F
NEXT CENTURY GROWTH INVESTORS LLC	13F	Company	0.72%	356,441	$7,809,000	—	30 Sep 2015	13F
CASTLEARK MANAGEMENT LLC	13F	Company	0.71%	352,310	$7,719,000	—	30 Sep 2015	13F
PALISADE CAPITAL MANAGEMENT, LP	13F	Company	0.64%	318,564	$6,980,000	—	30 Sep 2015	13F
Pier Capital, LLC	13F	Company	0.6%	296,688	$6,500,000	—	30 Sep 2015	13F
DEUTSCHE BANK AG\	13F	Company	0.58%	287,864	$6,305,000	—	30 Sep 2015	13F
Rothschild Capital Partners, LLC	13F	Company	0.48%	236,501	$5,182,000	—	30 Sep 2015	13F
CATAPULT CAPITAL MANAGEMENT LLC	13F	Company	0.45%	225,000	$4,930,000	—	30 Sep 2015	13F
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	13F	Company	0.45%	223,929	$4,907,000	—	30 Sep 2015	13F
Allianz Asset Management GmbH	13F	Company	0.45%	222,311	$4,871,000	—	30 Sep 2015	13F
KOPP INVESTMENT ADVISORS LLC	13F	Company	0.41%	202,035	$4,427,000	—	30 Sep 2015	13F
BLACKROCK ADVISORS LLC	13F	Company	0.4%	198,763	$4,355,000	—	30 Sep 2015	13F
EVENTIDE ASSET MANAGEMENT, LLC	13F	Company	0.37%	184,100	$4,034,000	—	30 Sep 2015	13F
THB ASSET MANAGEMENT	13F	Company	0.36%	180,008	$3,943,000	—	30 Sep 2015	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.35%	171,649	$3,760,000	—	30 Sep 2015	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.34%	170,108	$3,727,000	—	30 Sep 2015	13F
Bank of New York Mellon Corp	13F	Company	0.31%	154,444	$3,385,000	—	30 Sep 2015	13F
UNITED SERVICES AUTOMOBILE ASSOCIATION	13F	Company	0.29%	144,130	$3,158,000	—	30 Sep 2015	13F
FEDERATED HERMES, INC.	13F	Company	0.26%	128,200	$2,809,000	—	30 Sep 2015	13F
Informed Momentum Co LLC	13F	Company	0.25%	123,281	$2,701,000	—	30 Sep 2015	13F
TCW GROUP INC	13F	Company	0.24%	119,168	$2,611,000	—	30 Sep 2015	13F
PARADIGM CAPITAL MANAGEMENT INC/NY	13F	Company	0.24%	118,825	$2,603,000	—	30 Sep 2015	13F
PARADIGM ASSET MANAGEMENT CO LLC	13F	Company	0.23%	116,500	$2,552,515	—	30 Sep 2015	13F
BlackRock Investment Management, LLC	13F	Company	0.23%	113,107	$2,478,000	—	30 Sep 2015	13F
Manatuck Hill Partners, LLC	13F	Company	0.22%	109,500	$2,399,000	—	30 Sep 2015	13F

Institutional Holders of AtriCure, Inc. - Common Stock (ATRC) as of Q4 2015

As of 31 Dec 2015, AtriCure, Inc. - Common Stock (ATRC) was held by 116 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 26,812,438 shares. The largest 10 holders included RS INVESTMENT MANAGEMENT CO LLC, WELLINGTON MANAGEMENT GROUP LLP, FMR LLC, ADAGE CAPITAL PARTNERS GP LLC, VANGUARD GROUP INC, First Light Asset Management, LLC, Broadfin Capital, LLC, EMERALD MUTUAL FUND ADVISERS TRUST, EMERALD ADVISERS INC/PA, and BlackRock Fund Advisors. This page lists 116 institutional shareholders reporting positions in this security for the Q4 2015 filing period.

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

Compare Q4 2015 vs Q3 2015 Across Filers

Q3 2015 holders

120

Q4 2015 holders

116

Holder diff

-4

Investor	Q3 2015 Shares	Q4 2015 Shares	Share Diff	Share Chg %	Q3 2015 Value $	Q4 2015 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.