Who owns athenahealth?

Top Holders and Investors of ATHN Stock

Find out what company owns athenahealth, who bought ATHN this quarter, and who sold shares of ATHN stock?

Fund or Company Name Number of Shares Valued At As Of
FMR LLC 5.93M $668.00M Mar 2017
Janus Capital Management LLC 5.72M $644.45M Mar 2017
MORGAN STANLEY 4.51M $508.81M Mar 2017
T. Rowe Price Associates, Inc. 3.76M $424.00M Mar 2017
Wellington Management Company, LLP 3.46M $390.44M Mar 2017
The Vanguard Group,Inc 3.05M $343.40M Mar 2017
Sands Capital Management 2.75M $289.13M Dec 2016
Capital Research Global Investors^ 1.77M $199.24M Mar 2017
Artisan Partners Limited Partnership 1.34M $151.35M Mar 2017
Riverbrige Partners 1.06M $119.13M Mar 2017
BlackRock Institutional Trust Company, N.A. 1.04M $109.35M Dec 2016
ClearBridge Advisors, LLC 908505 $102.38M Mar 2017
HHR Asset Management 707685 $79.76M Mar 2017
SUSQUEHANNA INTERNATIONAL 516800 $58.24M Mar 2017
STATE STREET CORPORATION 502823 $56.66M Mar 2017
Arrowpoint Asset Management, LLC 498359 $56.16M Mar 2017
GOLDMAN SACHS GROUP INC 456832 $51.48M Mar 2017
EverPoint Asset Management 417500 $43.91M Dec 2016
Jackson Square Partners 416660 $43.82M Dec 2016
BlackRock Fund Advisors 413123 $43.45M Dec 2016
Sumitomo Mitsui Asset Management Company, LTD 391965 $44.17M Mar 2017
Allianz Asset Management AG 363475 $40.96M Mar 2017
Bank of New York Mellon 353867 $39.88M Mar 2017
Millennium Management LLC 342936 $38.65M Mar 2017
Partner Fund Management, L.P. 342540 $38.60M Mar 2017
Stephens Investment Management Group 325709 $36.70M Mar 2017
Geode Capital Management, LLC 308664 $34.78M Mar 2017
Franklin Resources, Inc. 305224 $34.40M Mar 2017
Ruane, Cunniff & Goldfarb Inc. 302156 $31.78M Dec 2016
Credit Suisse AG 300420 $33.85M Mar 2017
Point72 Asset Management 253327 $28.55M Mar 2017
CITADEL ADVISORS LLC 237135 $26.72M Mar 2017
ARK Investment Management 227104 $25.59M Mar 2017
Barton Investment Management 225346 $25.39M Mar 2017
Bank of America Corporation 223997 $25.24M Mar 2017
PICTET ASSET MANAGEMENT 221491 $24.96M Mar 2017
NORTHERN TRUST 217866 $24.57M Mar 2017
Macquarie Group Limited 196637 $22.16M Mar 2017
Emerald Acquisition 184840 $23.31M Sep 2016
Deutsche Bank Aktiengesellschaft 184554 $20.30M Mar 2017
KORNITZER CAPITAL MANAGEMENT INC /KS 171860 $19.37M Mar 2017
Charles Schwab Investment Management, Inc. 161018 $18.15M Mar 2017
New York State Common Retirement Fund 151078 $17.02M Mar 2017
PEREGRINE CAPITAL MANAGEMENT 138661 $19.49M Jun 2017
TIAA-CREF Investment Management 136510 $15.38M Mar 2017
DIMENSIONAL FUND ADVISORS 121650 $13.71M Mar 2017
Two Sigma Advisers, LLC 121048 $13.64M Mar 2017
Avalon Global Asset Management 111780 $12.60M Mar 2017
Royce & Associates, LLC. 108400 $12.22M Mar 2017
SEI INVESTMENTS 103067 $11.89M Mar 2017
Citigroup Inc. 98890 $11.17M Mar 2017
Wells Fargo & Company 83679 $9.43M Mar 2017
Barclays PLC 82437 $9.29M Mar 2017
California State Teachers Retirement System 77249 $8.71M Mar 2017
TD Asset Management Inc. 74441 $8.39M Mar 2017
PEAK6 Investments, L.P. 73768 $8.31M Mar 2017
CalPERS 72200 $8.14M Mar 2017
Zurcher Kantonalbank 71696 $8.08M Mar 2017
Teachers Advisors 70943 $8.00M Mar 2017
SCOUT INVESTMENTS, INC. 69156 $7.79M Mar 2017
361 CAPITAL 66818 $7.53M Mar 2017
Cutler 66139 $9.27M Jun 2017
Swiss National Bank 65130 $7.34M Mar 2017
Rock Springs Capital Management 62750 $7.07M Mar 2017
PDT Partners 62390 $7.03M Mar 2017
GAGNON SECURITIES LLC 62193 $8.74M Jun 2017
Florida State Board of Administration 57618 $6.49M Mar 2017
Public Employees' Retirement Association of Colorado 56083 $6.32M Mar 2017
HUNTINGTON NATIONAL BANK 55848 $7.86M Jun 2017
Canada Pension Plan Investment Board 51400 $5.79M Mar 2017
EVENTIDE ASSET MANAGEMENT 51200 $5.77M Mar 2017
RHUMBLINE ADVISERS 45314 $5.11M Mar 2017
Polar Capital LLP 43987 $4.95M Mar 2017
Tamarack Advisers 41000 $4.31M Dec 2016
STEVENS CAPITAL MANAGEMENT LP 40595 $4.58M Mar 2017
Otter Creek Advisors 38700 $4.36M Mar 2017
BlackRock Advisors 34216 $3.60M Dec 2016
Walleye Trading, LLC 31800 $3.58M Mar 2017
Oppenheimer Asset Management Inc. 31697 $3.57M Mar 2017
BlackRock Group 31302 $3.29M Dec 2016
ENVESTNET ASSET MANAGEMENT 28394 $3.20M Mar 2017
Parametric Portfolio Associates 28211 $3.18M Mar 2017
HIGHBRIDGE CAPITAL MANAGEMENT LLC 27481 $3.10M Mar 2017
Gagnon Advisors 27370 $3.85M Jun 2017
MARSHALL WACE ASIA 25927 $2.93M Mar 2017
Marshall Wace North America 25927 $2.93M Mar 2017
Sunrise Partners Limited Partnership 25000 $2.82M Mar 2017
UBS GLOBAL ASSET MANAGEMENT AMERICAS 22931 $2.58M Mar 2017
Sandler Capital Management 22500 $2.54M Mar 2017
ALLIANCEBERNSTEIN, L.P. 22340 $2.52M Mar 2017
Invesco Ltd. 21994 $2.48M Mar 2017
Two Sigma Investments, LLC 21719 $2.45M Mar 2017
CAM Group Holding A/S 19843 $2.24M Mar 2017
Clinton Group, Inc. 19576 $2.21M Mar 2017
US BANCORP \DE\ 19539 $2.75M Jun 2017
Spot Trading L.L.C 19511 $2.22M Mar 2017
BlackRock Investment Management 18735 $1.97M Dec 2016
OHIO PERS 17586 $1.98M Mar 2017
PNC FINANCIAL SERVICES 16653 $1.88M Mar 2017
ING INVESTMENT MANAGEMENT 15636 $1.76M Mar 2017
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 14873 $1.68M Mar 2017
Cribstone Capital Management 14186 $1.99M Jun 2017
United Services Automobile Association 13755 $1.55M Mar 2017
Brown Advisory Holdings Incorporated 13458 $1.52M Mar 2017
NORDEA INVESTMENT MANAGEMENT AB 13256 $1.49M Mar 2017
Legal & General Group Plc 12914 $1.46M Mar 2017
The Glenmede Trust Company, N.A. 12358 $1.39M Mar 2017
Baird Financial 11818 $1.33M Mar 2017
The TCW Group, Inc. 11741 $1.32M Mar 2017
Gilder, Gagnon, Howe & Co. LLC 10870 $1.23M Mar 2017
SunTrust Banks, Inc. 10112 $1.08M Mar 2017
First Republic Investment Management, Inc 9484 $1.07M Mar 2017
Bush O'Donnell Investment Advisors 9280 $1.05M Mar 2017
KBC Group NV 9075 $1.02M Mar 2017
UBS Group AG 8794 $990995 Mar 2017
STIFEL FINANCIAL 8398 $955356 Mar 2017
T. Montgomery Jones 8359 $941975 Mar 2017
Sumitomo Mitsui Trust Holdings, Inc. 7900 $890014 Mar 2017
Nikko Asset Management Americas, Inc. 7900 $890014 Mar 2017
State of Wisconsin Investment Board 7798 $878990 Mar 2017
Tudor Investment Corporation 7604 $856970 Mar 2017
Partner Investment Management, L.P. 7482 $842996 Mar 2017
Nomura Holdings Inc. 7212 $811999 Mar 2017
Utah Retirement Systems 7200 $811008 Mar 2017
Evercore Wealth Management, LLC 7000 $788970 Mar 2017
Principal Financial Group, Inc. 6982 $787011 Mar 2017
Aperio Group LLC 6709 $943017 Jun 2017
WESBANCO TRUST AND INVESTMENTS 6336 $714003 Mar 2017
AMALGAMATED BANK 5687 $640981 Mar 2017
Quantbot Technologies LLC 5664 $637992 Mar 2017
BANK OF MONTREAL /CAN/ 5629 $790874 Jun 2017
SECOR Capital Advisors 5416 $610004 Mar 2017
Russell Investments 5409 $609432 Mar 2017
Dynamic Technology Lab Private 5387 $607007 Mar 2017
BlackRock 5204 $547460 Dec 2016
Stephens Inc. 5123 $577003 Mar 2017
FDx Advisors 4785 $538982 Mar 2017
Balyasny Asset Management 4755 $535983 Mar 2017
Commonwealth Equity Services 4479 $505007 Mar 2017
The Great-West Life Assurance Company 4358 $490013 Mar 2017
Acadian Asset Management LLC 4196 $473015 Mar 2017
AQR Capital Management, LLC 4182 $471018 Mar 2017
Northeast Investment Management, Inc. 4175 $469979 Mar 2017
Pacer Advisors 4124 $464981 Mar 2017
Folger Hill Asset Management 3997 $449982 Mar 2017
Cupps Capital Management, LLC 3983 $502017 Sep 2016
Raymond James & Associates 3793 $427015 Mar 2017
M^T Bank Corporation 3717 $423440 Mar 2017
Allen Investment Management LLC 3684 $415002 Mar 2017
Guggenheim Capital, LLC Managers 3654 $407822 Mar 2017

Who sold athenahealth?

Fund Name Date Sold Shares Held Valued At
Camber Capital Management LLC Dec. 31, 2016 300000 $31.55M
Norges Bank Investment Management Dec. 31, 2016 197303 $20.75M
Hutchin Hill Capital, LP Dec. 31, 2016 150000 $15.78M
WOLVERINE TRADING Dec. 31, 2016 106900 $11.24M
Scoggin LLC Sept. 30, 2016 96000 $12.11M
PURA VIDA INVESTMENTS Dec. 31, 2016 95000 $9.99M
FRIESS ASSOCIATES, INC. Dec. 31, 2016 70000 $7.36M
Quadrature Capital Dec. 31, 2016 54762 $5.76M
A.R.T. Advisors Dec. 31, 2016 46500 $4.89M
Loomis, Sayles and Dec. 31, 2016 44226 $4.65M
JANE STREET Dec. 31, 2016 27509 $2.89M
D. E. Shaw & Co., Inc. (see notes 1, 2 and 3) Dec. 31, 2016 17300 $1.82M