Cyberonics Inc: Ownership

Ownership Information
Shares Outstanding 28.00 Mil
Institutional Ownership (%)79.24
Top 10 Institutions (%)53.30
Mutual Fund Ownership (%)1.64
5%/Insider Ownership (%)20.94
Float (%)79.06
Ownership Activity
Description# of HoldersShares
Total Positions 12122,185,926
New Positions110
Soldout Positions900
Net Position Change-86-3,526,995
Buyers532,929,455
Sellers139-6,456,450
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
Palo Alto Investors, LLC 3,843,679 4,289 0.1 -2,580,813 13.8 7.5 09-30-09
Icahn Associates Corporation 2,107,972 0 0.0 -1,454,500 7.6 0.5 09-30-09
BlackRock Institutional Trust Company, N.A. 1,910,515 127,665 7.2 804,814 6.9 0.0 09-30-09
Vanguard Group, Inc. 1,608,187 38,109 2.4 -475,896 5.8 0.0 09-30-09
Cramer Rosenthal McGlynn, LLC 1,298,900 205,100 18.8 2,514,572 4.7 0.2 09-30-09
Wellington Management Company, LLP 1,170,595 842,750 257.1 13,207,222 4.2 0.0 09-30-09
Renaissance Technologies Corp. 970,494 135,600 16.2 1,585,387 3.5 0.1 09-30-09
Copper Rock Capital Partners LLC 802,621 86,385 12.1 882,774 2.9 0.9 09-30-09
Fred Alger Management, Inc. 607,616 607,616 100.0 9,685,399 2.2 0.1 09-30-09
State Street Global Advisors (US) 604,288 158,139 35.4 2,212,893 2.2 0.0 09-30-09
Dimensional Fund Advisors, LP 532,879 -4,800 -0.9 -447,511 1.9 0.0 09-30-09
TIAA-CREF 297,330 1,400 0.5 -181,876 1.1 0.0 09-30-09
Metropolitan Capital Advisors, Inc. 292,499 -103,017 -26.0 -1,914,997 1.1 6.3 09-30-09
D. E. Shaw & Co., L.P. 269,284 -14,099 -5.0 -420,272 1.0 0.0 09-30-09
Batterymarch Financial Management, Inc. 263,319 -2,676 -1.0 -226,192 0.9 0.0 09-30-09
*Category Headings:
Shs Held - shares held at report date
Shs Chg - position change within reporting period
%Chg - % change
$Chg - market value of the position change
%Out - % of shares outstanding
%Port - % Portfolio
Rpt Date - report date
Page generated 2/9/2010 10:54 PM Eastern Time