Western Digital Corp: Ownership

Ownership Information
Shares Outstanding 229.00 Mil
Institutional Ownership (%)84.93
Top 10 Institutions (%)35.50
Mutual Fund Ownership (%)2.17
5%/Insider Ownership (%).36
Float (%)99.64
Ownership Activity
Description# of HoldersShares
Total Positions 429194,492,288
New Positions700
Soldout Positions1380
Net Position Change-102-14,469,714
Buyers21537,358,892
Sellers317-51,828,608
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
AllianceBernstein L.P. 16,064,752 -2,774,695 -14.7 87,600,048 7.0 0.4 09-30-09
Fidelity Management & Research 12,196,750 -1,567,324 -11.4 80,799,320 5.3 0.1 09-30-09
Vanguard Group, Inc. 11,925,106 604,887 5.3 135,638,320 5.2 0.1 09-30-09
State Street Global Advisors (US) 8,960,626 -244,768 -2.7 83,388,728 3.9 0.1 09-30-09
LSV Asset Management 7,770,798 1,344,750 20.9 113,576,976 3.4 1.0 09-30-09
APG Asset Management 6,010,970 -226,685 -3.6 54,282,876 2.6 1.0 09-30-09
D. E. Shaw & Co., L.P. 4,970,006 2,589,431 108.8 118,469,080 2.2 0.6 09-30-09
BlackRock Investment Management, LLC 4,918,419 -450,426 -8.4 37,395,456 2.2 0.3 09-30-09
Acadian Asset Management LLC 4,467,311 4,036,937 938.0 151,785,952 2.0 1.3 09-30-09
BNP Paribas Asset Management S.A.S. 3,931,257 -19,928 -0.5 38,902,416 1.7 1.7 09-30-09
Goldman Sachs Asset Management (US) 3,557,454 2,703,342 316.5 107,319,824 1.6 0.2 09-30-09
INTECH Investment Management LLC 3,464,800 3,380,700 4,019.9 124,340,496 1.5 0.3 09-30-09
BlackRock Financial Management, Inc. 2,942,048 -223,191 -7.1 23,594,180 1.3 0.2 09-30-09
TIAA-CREF 2,878,447 2,568 0.1 28,938,876 1.3 0.1 09-30-09
American Century Investment Management, Inc. 2,584,228 381,792 17.3 36,037,296 1.1 0.2 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 2/10/2010 10:57 AM Eastern Time