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 5.84M $810.97M Mar 2016
MORGAN STANLEY 3.83M $530.93M Mar 2016
Wellington Management Company 3.65M $505.97M Mar 2016
Sands Capital Management 3.59M $498.10M Mar 2016
Janus Capital Management 3.36M $465.66M Mar 2016
Capital Research Global Investors^ 3.01M $417.52M Mar 2016
T. Rowe Price Associates 2.78M $386.08M Mar 2016
Vanguard 2.61M $420.03M Dec 2015
Artisan Partners Limited Partnership 2.22M $308.21M Mar 2016
Capital World Investors^ 1.30M $180.49M Mar 2016
TCW 1.19M $164.82M Mar 2016
Riverbrige Partners 964579 $133.86M Mar 2016
BlackRock Institutional Trust Company, N.A. 933287 $129.52M Mar 2016
SUSQUEHANNA INTERNATIONAL 627500 $101.03M Dec 2015
HHR Asset Management 614186 $98.85M Dec 2015
Criterion Capital Management 601671 $83.50M Mar 2016
Jackson Square Partners 581042 $80.64M Mar 2016
Franklin Resources 544811 $75.61M Mar 2016
ClearBridge Advisors 501993 $69.67M Mar 2016
STATE STREET CORPORATION 457047 $63.43M Mar 2016
Bank of America Corporation 438556 $60.87M Mar 2016
NORTHERN TRUST 432436 $60.02M Mar 2016
Millennium Management 424052 $58.86M Mar 2016
Macquarie 394628 $54.77M Mar 2016
BlackRock Fund Advisors 362749 $50.34M Mar 2016
Ruane, Cunniff & Goldfarb 300095 $41.42M Jun 2016
Barton Investment Management 260351 $36.13M Mar 2016
Geode Capital Management 245893 $34.13M Mar 2016
Stephens Investment Management 239045 $33.17M Mar 2016
KORNITZER CAPITAL MANAGEMENT INC /KS 220965 $30.50M Jun 2016
Royal Bank of Canada 219758 $30.50M Mar 2016
PEAK6 Investments 214900 $34.59M Dec 2015
BAM 208817 $28.98M Mar 2016
EVENTIDE ASSET MANAGEMENT 201200 $27.92M Mar 2016
First Trust Advisors 191981 $26.64M Mar 2016
Lee Munder Capital 189654 $25.29M Sep 2015
New York State Common Retirement Fund 173326 $24.05M Mar 2016
Arrowpoint Asset Management 161302 $22.39M Mar 2016
Deutsche Bank Aktiengesellschaft 144333 $20.03M Mar 2016
Columbus Circle Investors 142692 $19.80M Mar 2016
EverPoint Asset Management 130000 $18.04M Mar 2016
D. E. Shaw & Co 122284 $16.97M Mar 2016
DIAM 122079 $16.84M Mar 2016
TIAA-CREF Investment Management 119842 $16.63M Mar 2016
GOLDMAN SACHS 118726 $16.48M Mar 2016
Wells Fargo & Company 117929 $16.36M Mar 2016
Charles Schwab Investment Management 116659 $16.19M Mar 2016
CITADEL ADVISORS 108099 $15.00M Mar 2016
SEI INVESTMENTS 102691 $14.09M Mar 2016
LORD, ABBETT & CO 100838 $13.99M Mar 2016
GAGNON SECURITIES 99565 $13.82M Mar 2016
Marshall Wace 93792 $13.02M Mar 2016
CalPERS 91400 $12.68M Mar 2016
BlackRock Advisors 87514 $12.15M Mar 2016
DIMENSIONAL FUND ADVISORS 85680 $11.89M Mar 2016
JPMORGAN CHASE & CO 84834 $11.74M Mar 2016
California State Teachers Retirement System 81940 $11.37M Mar 2016
AXA 69000 $11.11M Dec 2015
Swiss National Bank 64230 $8.60M Mar 2016
Balyasny Asset Management 61447 $8.53M Mar 2016
Barclays 59796 $8.25M Mar 2016
Public Employees' Retirement Association of Colorado 57103 $7.88M Jun 2016
Gagnon Advisors 55116 $7.65M Mar 2016
HUNTINGTON NATIONAL BANK 52069 $7.21M Jun 2016
Jennison Associates 50810 $7.05M Mar 2016
TD Asset Management 50000 $6.94M Mar 2016
Public Sector Pension Investment Board 50000 $8.05M Dec 2015
Avalon Global Asset Management 49500 $7.97M Dec 2015
Otter Creek Management 47000 $6.27M Sep 2015
Rock Springs Capital Management 45750 $6.35M Mar 2016
Florida State Board of Administration 44735 $6.21M Mar 2016
ENVESTNET ASSET MANAGEMENT 41577 $5.77M Mar 2016
Canada Pension Plan Investment Board 39800 $5.52M Mar 2016
ALLIANCEBERNSTEIN 38622 $6.22M Dec 2015
Parametric Portfolio Associates 37403 $5.19M Mar 2016
PDT Partners 36900 $5.12M Mar 2016
RHUMBLINE ADVISERS 36152 $5.02M Mar 2016
Teachers Advisors 36127 $5.01M Mar 2016
COLUMBIA PARTNERS L L C INVESTMENT MANAGEMENT 35953 $4.99M Mar 2016
Baird Financial 30133 $4.18M Mar 2016
PURA VIDA INVESTMENTS 30000 $4.16M Mar 2016
BlackRock 28887 $4.01M Mar 2016
UBS Group AG 28522 $3.99M Mar 2016
Credit Suisse AG 27873 $3.87M Mar 2016
UBS GLOBAL ASSET MANAGEMENT AMERICAS 27789 $3.86M Mar 2016
Polar Capital 27225 $3.78M Mar 2016
State of Wisconsin Investment Board 26880 $3.73M Mar 2016
Otter Creek Advisors 25000 $3.47M Mar 2016
Tygh Capital Management 24200 $3.36M Mar 2016
Brown Advisory Holdings Incorporated 24030 $3.34M Mar 2016
CastleArk Management 22790 $3.16M Mar 2016
Northeast Investment Management 22743 $3.16M Mar 2016
PNC FINANCIAL SERVICES 21100 $2.93M Mar 2016
Chautauqua Capital Management 19898 $3.20M Dec 2015
Walleye Trading 19000 $2.64M Mar 2016
US BANCORP \DE\ 18687 $2.59M Mar 2016
FRED ALGER MANAGEMENT 17522 $2.43M Mar 2016
ING INVESTMENT MANAGEMENT 16603 $2.30M Mar 2016
First Republic Investment Management 16468 $2.28M Mar 2016
Squarepoint Ops 16200 $2.25M Mar 2016
Gilder, Gagnon, Howe & Co 15549 $2.16M Mar 2016
BANK OF MONTREAL /CAN/ 15015 $2.07M Jun 2016
OHIO PERS 14463 $2.01M Mar 2016
BlackRock Investment Management 14064 $1.95M Mar 2016
Loomis, Sayles and 13479 $1.87M Mar 2016
United Services Automobile Association 12660 $1.76M Mar 2016
STIFEL FINANCIAL 12635 $1.75M Mar 2016
Robeco Institutional Asset Management B V 12276 $1.69M Jun 2016
Inves 10873 $1.51M Mar 2016
SunTrust Banks 10150 $1.41M Mar 2016
Sio Capital Management 10000 $1.39M Mar 2016
Frank Russell Company 9338 $1.31M Mar 2016
Bush O'Donnell Investment Advisors 9308 $1.29M Mar 2016
LANDSCAPE CAPITAL MANAGEMENT 9205 $1.28M Mar 2016
T. Montgomery Jones 9159 $1.26M Jun 2016
Spot Trading L.L.C 8378 $1.18M Mar 2016
Rockefeller Financial Services 8222 $1.13M Jun 2016
AQR Capital Management 7791 $1.08M Mar 2016
Evercore Wealth Management 7000 $970970 Mar 2016
CrestPoint Capital Management 7000 $966000 Jun 2016
Utah Retirement Systems 6900 $957030 Mar 2016
Cupps Capital Management 6753 $936978 Mar 2016
Zacks Investment Management 6536 $907000 Mar 2016
Name ATLANTA CAPITAL 6515 $904021 Mar 2016
Jefferies 6400 $887488 Mar 2016
Glenmede Trust Company, N.A. 6253 $866978 Mar 2016
HighTower Advisors 6155 $854991 Mar 2016
SIT INVESTMENT ASSOCIATES 6150 $849007 Jun 2016
Driehaus Capital Management 6000 $966000 Dec 2015
BlueCrest Capital Management 5900 $818979 Mar 2016
FDx Advisors 5137 $713015 Mar 2016
NORDEA INVESTMENT MANAGEMENT AB 4836 $666981 Jun 2016
TEACHER RETIREMENT SYSTEM OF TEXAS 4779 $662990 Mar 2016
AMALGAMATED BANK 4561 $633021 Mar 2016
BlackRock 4508 $625439 Mar 2016
M^T Bank Corporation 4500 $642870 Mar 2016
Diversified Trust Company 4465 $615991 Jun 2016
Great-West Life Assurance Company 4358 $604018 Mar 2016
Allen Investment Management 4137 $574008 Mar 2016
Stephens 4061 $563991 Mar 2016
CITY NATIONAL BANK 4002 $533986 Sep 2015
IBM Retirement Fund 3933 $542989 Jun 2016
Sheaff Brock Investment Advisors 3857 $535004 Mar 2016
Advisors Asset Management 3838 $532983 Mar 2016
Citi 3486 $560304 Dec 2015
Aperio 3429 $476013 Mar 2016
Sterling Ridge Capital Management 3290 $457013 Mar 2016
Fort Washington Investment Advisors 3180 $441002 Mar 2016
Round Table Services 3168 $436993 Jun 2016
PITCAIRN COMPANY 3094 $427002 Jun 2016

Who sold athenahealth?

Fund Name Date Sold Shares Held Valued At
Norges Bank Investment Management Dec. 31, 2015 301741 $48.57M
Highland Capital Management Dec. 31, 2015 153381 $24.82M
VOLORIDGE INVESTMENT MANAGEMENT Dec. 31, 2015 43955 $7.07M
Airain Dec. 31, 2015 35634 $5.74M
Adage Capital Partners GP Dec. 31, 2015 30000 $4.83M
Manatuck Hill Partners Dec. 31, 2015 16000 $2.58M
Arbor Capital Management Dec. 31, 2015 14051 $2.26M