Notable Holders of Athenahealth, Inc. (ATHN)

  |   Expand Research on ATHN   |   * Does Not Fully Represent All Holders
Fund Title Shares % Owned Source
JANUS CAPITAL MANAGEMENT LLC COM 5,718,746 15.11% 13F
BlackRock Institutional Trust Company, N.A. COM 1,039,703 2.75% 13F
BlackRock Fund Advisors COM 413,123 1.09% 13F
MANAGED ACCOUNT ADVISORS LLC COM 388,545 1.03% 13F
EverPoint Asset Management, LLC COM 317,500 0.84% 13F
NORTHERN TRUST CO OF CONNECTICUT COM 261,308 0.69% 13F
Ark Investment Management LLC Common Stock 244,056 0.64% 13F
Emerald Acquisition Ltd. Common Stocks 184,840 0.49% 13F
Braeside Investments, LLC (PUT) COM 121,400 0.32% 13F
Timberline Asset Management LLC Com 117,882 0.31% 13F
MFC GLOBAL INVESTMENT MANAGEMENT (U.S.), LLC COM 87,393 0.23% 13F
OTTER CREEK MANAGEMENT INC (PUT) COM 47,000 0.12% 13F
BLACKROCK ADVISORS LLC COM 34,216 0.09% 13F
Placemark Investments, Inc. COM 31,978 0.08% 13F
SEI TRUST CO COM 31,794 0.08% 13F
BlackRock Group LTD COM 31,302 0.08% 13F
ING INVESTMENT MANAGEMENT CO COM 24,080 0.06% 13F
PUTNAM INVESTMENT MANAGEMENT LLC 22,398 0.06% 13F
Chautauqua Capital Management COM 19,898 0.05% 13F
BlackRock Investment Management, LLC COM 18,735 0.05% 13F
Manulife Asset Management (North America) Ltd COM 12,920 0.03% 13F
Spot Trading L.L.C (PUT) COM 10,300 0.03% 13F
Adamant Biomedical Investments AG COM 10,000 0.03% 13F
RUSSELL FRANK CO/ Common Stocks 9,338 0.02% 13F
BUSH ODONNELL INVESTMENT ADVISORS INC COM 9,256 0.02% 13F
BMO FINANCIAL CORP COM 9,187 0.02% 13F
ROCKEFELLER FINANCIAL SERVICES INC Common 8,995 0.02% 13F
Commonwealth Equity Services, Inc COM 8,794 0.02% 13F
Wellspring Management, LLC COM 6,700 0.02% 13F
KCG Holdings, Inc. COM 6,412 0.02% 13F
KNIGHT CAPITAL GROUP, INC. COM 6,290 0.02% 13F
UBS AG (CALL) COM 6,200 0.02% 13F
Kaizen Advisory, LLC Common 5,541 0.01% 13F
Charles Schwab Bank COM 5,200 0.01% 13F
SPOT TRADING L.L.C. COM 4,407 0.01% 13F
CITY NATIONAL BANK COMMON STOCK 4,002 0.01% 13F
Cupps Capital Management, LLC COM 3,983 0.01% 13F