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 5.89M $812.81M Jun 2016
Wellington Management Company 4.74M $654.46M Jun 2016
Janus Capital Management 4.10M $566.61M Jun 2016
MORGAN STANLEY 3.47M $475.74M Jun 2016
Sands Capital Management 3.36M $463.50M Jun 2016
Capital Research Global Investors^ 2.97M $409.29M Jun 2016
Vanguard 2.76M $381.19M Jun 2016
T. Rowe Price Associates 2.62M $361.82M Jun 2016
Artisan Partners Limited Partnership 1.73M $239.36M Jun 2016
TCW 1.19M $163.76M Jun 2016
Riverbrige Partners 980305 $135.29M Jun 2016
BlackRock Institutional Trust Company, N.A. 964877 $133.16M Jun 2016
HHR Asset Management 656452 $90.59M Jun 2016
Jackson Square Partners 569367 $78.58M Jun 2016
Franklin Resources 532703 $73.52M Jun 2016
ClearBridge Advisors 502744 $69.38M Jun 2016
Millennium Management 468427 $64.65M Jun 2016
STATE STREET CORPORATION 448240 $61.86M Jun 2016
NORTHERN TRUST 443795 $61.25M Jun 2016
Bank of America Corporation 423832 $58.49M Jun 2016
Macquarie 393518 $54.31M Jun 2016
BlackRock Fund Advisors 381989 $52.72M Jun 2016
Bank of New York Mellon 312329 $43.10M Jun 2016
Ruane, Cunniff & Goldfarb 300095 $41.42M Jun 2016
SUSQUEHANNA INTERNATIONAL 293600 $40.52M Jun 2016
Geode Capital Management 258557 $35.68M Jun 2016
Stephens Investment Management 238419 $32.90M Jun 2016
Royal Bank of Canada 222572 $30.71M Jun 2016
KORNITZER CAPITAL MANAGEMENT INC /KS 220965 $30.50M Jun 2016
Criterion Capital Management 212906 $29.38M Jun 2016
Barton Investment Management 209014 $28.85M Jun 2016
Emerald Acquisition 207218 $28.59M Jun 2016
EVENTIDE ASSET MANAGEMENT 201200 $27.77M Jun 2016
Aureus Asset Management 197408 $11.41M Jun 2016
STATE TREASURER STATE OF MICHIGAN 183000 $25.26M Jun 2016
Arrowpoint Asset Management 173912 $24.00M Jun 2016
New York State Common Retirement Fund 160779 $22.19M Jun 2016
EverPoint Asset Management 150000 $20.70M Jun 2016
Balyasny Asset Management 149749 $20.67M Jun 2016
TIAA-CREF Investment Management 145611 $20.10M Jun 2016
Deutsche Bank Aktiengesellschaft 140835 $19.25M Jun 2016
DIAM 135151 $18.37M Jun 2016
Charles Schwab Investment Management 122658 $16.93M Jun 2016
GOLDMAN SACHS 117831 $16.26M Jun 2016
Wells Fargo & Company 110817 $15.30M Jun 2016
Columbus Circle Investors 104166 $14.38M Jun 2016
Barclays 103060 $14.22M Jun 2016
BAM 101239 $13.97M Jun 2016
JPMORGAN CHASE & CO 100687 $13.81M Jun 2016
GAGNON SECURITIES 98540 $13.60M Jun 2016
BlackRock Advisors 92329 $12.74M Jun 2016
SEI INVESTMENTS 88280 $12.18M Jun 2016
DIMENSIONAL FUND ADVISORS 83984 $11.59M Jun 2016
Jennison Associates 83826 $11.57M Jun 2016
Sio Capital Management 83100 $11.47M Jun 2016
California State Teachers Retirement System 82349 $11.36M Jun 2016
First Trust Advisors 78351 $10.81M Jun 2016
Teachers Advisors 77262 $10.66M Jun 2016
PEAK6 Investments 70200 $9.69M Jun 2016
AXA 68900 $9.51M Jun 2016
Capital World Investors^ 65000 $8.97M Jun 2016
Swiss National Bank 64530 $8.91M Jun 2016
LORD, ABBETT & CO 63138 $8.71M Jun 2016
Florida State Board of Administration 57320 $7.91M Jun 2016
Public Employees' Retirement Association of Colorado 57103 $7.88M Jun 2016
Polar Capital 52584 $7.26M Jun 2016
Avalon Global Asset Management 52500 $7.25M Jun 2016
PDT Partners 52214 $7.21M Jun 2016
HUNTINGTON NATIONAL BANK 52069 $7.21M Jun 2016
Canada Pension Plan Investment Board 51900 $7.16M Jun 2016
D. E. Shaw & Co 48241 $6.66M Jun 2016
Gagnon Advisors 47318 $6.53M Jun 2016
Rock Springs Capital Management 45750 $6.31M Jun 2016
CITADEL ADVISORS 43865 $6.05M Jun 2016
ENVESTNET ASSET MANAGEMENT 42480 $5.86M Jun 2016
ALLIANCEBERNSTEIN 40821 $5.63M Jun 2016
RHUMBLINE ADVISERS 39318 $5.43M Jun 2016
TD Asset Management 38814 $5.36M Jun 2016
Walleye Trading 36890 $5.09M Jun 2016
Loomis, Sayles and 35557 $4.91M Jun 2016
Tygh Capital Management 33400 $4.61M Jun 2016
Northeast Investment Management 32693 $4.51M Jun 2016
Baird Financial 30701 $4.24M Jun 2016
PURA VIDA INVESTMENTS 30000 $4.14M Jun 2016
COLUMBIA PARTNERS L L C INVESTMENT MANAGEMENT 29522 $4.07M Jun 2016
BlackRock 28917 $3.99M Jun 2016
Parametric Portfolio Associates 28739 $3.97M Jun 2016
UBS GLOBAL ASSET MANAGEMENT AMERICAS 28474 $3.93M Jun 2016
Brown Advisory Holdings Incorporated 27995 $3.86M Jun 2016
Credit Suisse AG 27167 $3.78M Jun 2016
Otter Creek Advisors 26000 $3.59M Jun 2016
State of Wisconsin Investment Board 25430 $3.51M Jun 2016
INTEGRAL DERIVATIVES 20900 $2.88M Jun 2016
Chautauqua Capital Management 19898 $3.20M Dec 2015
United Services Automobile Association 19420 $2.68M Jun 2016
JANE STREET 18600 $2.57M Jun 2016
Inves 18315 $2.51M Jun 2016
US BANCORP \DE\ 18128 $2.50M Jun 2016
PNC FINANCIAL SERVICES 17652 $2.44M Jun 2016
ING INVESTMENT MANAGEMENT 16889 $2.33M Jun 2016
GAM Holding 16462 $2.27M Jun 2016
Gilder, Gagnon, Howe & Co 15472 $2.13M Jun 2016
BlackRock Investment Management 15246 $2.10M Jun 2016
BANK OF MONTREAL /CAN/ 15015 $2.07M Jun 2016
OHIO PERS 14737 $2.03M Jun 2016
Robeco Institutional Asset Management B V 12276 $1.69M Jun 2016
STIFEL FINANCIAL 10354 $1.43M Jun 2016
Quantitative Investment Management 10300 $1.42M Jun 2016
SunTrust Banks 10150 $1.40M Jun 2016
Frank Russell Company 9338 $1.31M Mar 2016
Bush O'Donnell Investment Advisors 9308 $1.28M Jun 2016
T. Montgomery Jones 9159 $1.26M Jun 2016
First Republic Investment Management 8668 $1.20M Jun 2016
Principal Financial 8606 $1.19M Jun 2016
Rockefeller Financial Services 8222 $1.13M Jun 2016
Glenmede Trust Company, N.A. 7565 $1.04M Jun 2016
Cupps Capital Management 7473 $1.03M Jun 2016
Utah Retirement Systems 7200 $994032 Jun 2016
AQR Capital Management 7168 $988968 Jun 2016
Evercore Wealth Management 7000 $966000 Jun 2016
CrestPoint Capital Management 7000 $966000 Jun 2016
S.A.C. Capital Advisors 6789 $937017 Jun 2016
AMALGAMATED BANK 6216 $777000 Jun 2016
Name ATLANTA CAPITAL 6184 $853020 Jun 2016
SIT INVESTMENT ASSOCIATES 6150 $849007 Jun 2016
Zacks Investment Management 6040 $834003 Jun 2016
TEACHER RETIREMENT SYSTEM OF TEXAS 5435 $749975 Jun 2016
SEVEN EIGHT CAPITAL 5400 $744984 Jun 2016
Pacad Investment 5400 $744984 Jun 2016
BlackRock 5127 $707679 Jun 2016
Tudor Investment Corporation 5067 $698992 Jun 2016
Citi 5015 $690866 Jun 2016
NORDEA INVESTMENT MANAGEMENT AB 4836 $666981 Jun 2016
FDx Advisors 4713 $650016 Jun 2016
Diversified Trust Company 4465 $615991 Jun 2016
Great-West Life Assurance Company 4358 $600009 Jun 2016
Stephens 4358 $601011 Jun 2016
Allen Investment Management 4137 $570988 Jun 2016
GSA Capital Partners 4000 $552000 Jun 2016
Two Sigma Investments 4000 $552000 Jun 2016
IBM Retirement Fund 3933 $542989 Jun 2016
Name OMERS Administration Corporation 3700 $511007 Jun 2016
Sheaff Brock Investment Advisors 3607 $497982 Jun 2016
Aperio 3406 $469993 Jun 2016
Legal & General 3379 $460050 Jun 2016
MENTA CAPITAL 3339 $461015 Jun 2016
Driehaus Capital Management 3246 $448012 Jun 2016
Round Table Services 3168 $436993 Jun 2016
Commonwealth Equity Services 3140 $433006 Jun 2016
PITCAIRN COMPANY 3094 $427002 Jun 2016

Who sold athenahealth?

Fund Name Date Sold Shares Held Valued At
Marshall Wace March 31, 2016 93792 $13.02M
CalPERS March 31, 2016 91400 $12.68M
Public Sector Pension Investment Board Dec. 31, 2015 50000 $8.05M
UBS Group AG March 31, 2016 28522 $3.99M
CastleArk Management March 31, 2016 22790 $3.16M
FRED ALGER MANAGEMENT March 31, 2016 17522 $2.43M
Squarepoint Ops March 31, 2016 16200 $2.25M