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Stock Information

Ownership Profile

Shareholder Breakdown
  Holders Values ($) % O/S Shares
Institution 1,129 20,715 87.64 260,785,835
Mutual Fund 1,744 10,283 42.22 125,630,465
Institutional Shareholder Rotation
  Holders Values Change ($) % O/S Shares Change
Buyers 562 2,615 11.12 33,084,217
Sellers 577 -2,864 11.96 -35,578,868
Net -- -249 0.84 -2,494,651
Institutional Shareholder Concentration
    Values ($) % O/S Shares
Top 10 Inst.   8,611 36.39 108,270,679
Top 20 Inst.   10,815 45.82 136,341,309
Top 50 Inst.   14,180 60.04 178,661,110
Total Inst.   14,180 60.04 178,661,110
Institutional Shareholder Style
  Holders Values ($) % O/S Shares
Index 59 6,541 27.63 82,222,479
AggresGr 15 100 0.42 1,253,670
CoreGrowth 203 3,033 12.80 38,088,581
Growth 63 368 1.55 4,615,545
IncomeValue 21 203 0.86 2,570,770
Yield 25 174 0.71 2,115,021
BrokerDealer 37 1,122 4.74 14,109,799
GARP 140 2,624 11.11 33,058,581
HedgeFund 96 2,097 8.87 26,405,572
SectorSpecific 1 2 0.02 49,214
Specialty 13 112 0.47 1,407,310
CoreValue 149 3,185 13.57 40,387,225
DeepValue 39 597 2.54 7,544,093
Top Holders: Institutional Investor
  Shares Held % O/S Shares Change Filing Date
The Vanguard Group, Inc. 32,055,915 10.77 876,813 12/31/2017
BlackRock Institutional Trust Company, N.A. 14,421,761 4.85 329,415 12/31/2017
Capital World Investors 11,999,528 4.03 -578,047 12/31/2017
State Street Global Advisors (US) 11,625,696 3.91 51,371 12/31/2017
AQR Capital Management, LLC 10,692,905 3.59 5,143,651 12/31/2017
ClearBridge Investments, LLC 8,456,211 2.84 -408,011 12/31/2017
Iridian Asset Management LLC 6,798,795 2.28 464,754 12/31/2017
Goldman Sachs & Company, Inc. 4,419,902 1.49 1,292,371 12/31/2017
Geode Capital Management, L.L.C. 3,919,230 1.32 171,959 12/31/2017
Columbia Threadneedle Investments (US) 3,880,736 1.30 -183,014 12/31/2017
Lyrical Asset Management LP 3,307,454 1.11 103,165 12/31/2017
LSV Asset Management 3,096,516 1.04 -38,572 12/31/2017
Dimensional Fund Advisors, L.P. 3,001,214 1.01 -85,711 12/31/2017
Neuberger Berman, LLC 2,880,439 0.97 241,505 12/31/2017
Two Sigma Investments, LP 2,778,518 0.93 2,712,929 12/31/2017
Invesco PowerShares Capital Management LLC 2,712,125 0.91 68,445 12/31/2017
OppenheimerFunds, Inc. 2,708,131 0.91 -115,968 12/31/2017
Nuveen LLC 2,557,935 0.86 110,393 12/31/2017
Janus Henderson Investors 2,551,419 0.86 -19,186 12/31/2017
Norges Bank Investment Management (NBIM) 2,476,879 0.83 -423,955 12/31/2016
Renaissance Technologies LLC 2,431,182 0.82 976,433 12/31/2017
Northern Trust Investments, Inc. 2,357,743 0.79 -40,096 12/31/2017
Goldman Sachs Asset Management (US) 2,182,402 0.73 1,250,400 12/31/2017
Bank of America Merrill Lynch (US) 2,082,256 0.70 334,610 12/31/2017
Millennium Management LLC 1,761,443 0.59 854,852 12/31/2017
T. Rowe Price Associates, Inc. 1,666,920 0.56 -1,951,236 12/31/2017
TCW Asset Management Company LLC 1,630,387 0.55 -151,931 12/31/2017
Quantitative Management Associates LLC 1,628,203 0.55 691,806 12/31/2017
Mellon Capital Management Corporation 1,600,254 0.54 -58,788 12/31/2017
Charles Schwab Investment Management, Inc. 1,494,192 0.50 307,838 12/31/2017
Legal & General Investment Management Ltd. 1,423,599 0.48 -60,447 12/31/2017
Citadel LLC 1,407,120 0.47 -1,444,199 12/31/2017
BlackRock Investment Management (UK) Ltd. 1,387,205 0.47 -50,732 12/31/2017
Wells Fargo Advisors 1,378,850 0.46 -34,964 12/31/2017
Fidelity Management & Research Company 1,254,568 0.42 -852,807 12/31/2017
First Trust Advisors L.P. 1,246,194 0.42 55,262 12/31/2017
UBS Asset Management (Americas), Inc. 1,229,438 0.41 265,560 12/31/2017
PanAgora Asset Management Inc. 1,205,451 0.41 767,193 12/31/2017
Capital International Investors 1,200,000 0.40 0 12/31/2017
New York State Common Retirement Fund 1,175,635 0.40 -149,100 12/31/2017
UBS Asset Management (Switzerland) 1,127,520 0.38 122,691 12/31/2017
New Jersey Division of Investment 1,112,209 0.37 50,000 12/31/2017
Parametric Portfolio Associates LLC 1,102,945 0.37 144,452 12/31/2017
Schweizerische Nationalbank 1,086,563 0.37 12,800 12/31/2017
BlackRock Asset Management Ireland Limited 1,082,561 0.36 78,490 12/31/2017
Artemis Investment Management LLP 1,034,454 0.35 -317,213 12/31/2017
St. Denis J. Villere & Company, LLC 1,032,918 0.35 1,900 12/31/2017
APG Asset Management 1,006,290 0.34 -27,231 12/31/2017
Schroder Investment Management Ltd. (SIM) 1,001,774 0.34 -411,226 12/31/2017
Sumitomo Mitsui Trust Bank, Limited 989,525 0.33 19,054 12/31/2017

Ownership data is provided by Thomson Reuters, a third party service, and Western Digital Corporation does not maintain or provide information directly to this service.