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Stock Information

Ownership Profile

Shareholder Breakdown
  Holders Values ($) % O/S Shares
Institution 1,013 16,989 87.13 250,983,399
Mutual Fund 1,607 8,419 44.20 127,338,776
Institutional Shareholder Rotation
  Holders Values Change ($) % O/S Shares Change
Buyers 510 2,302 11.87 34,195,937
Sellers 509 -2,897 15.00 -43,215,364
Net -- -595 3.13 -9,019,427
Institutional Shareholder Concentration
    Values ($) % O/S Shares
Top 10 Inst.   6,182 31.58 90,980,150
Top 20 Inst.   7,912 40.51 116,699,927
Top 50 Inst.   11,057 56.58 162,983,018
Total Inst.   11,057 56.58 162,983,018
Institutional Shareholder Style
  Holders Values ($) % O/S Shares
Index 56 5,108 30.04 75,229,375
CoreGrowth 189 2,560 15.10 37,826,045
Growth 52 306 1.81 4,522,439
AggresGr 11 105 0.62 1,541,764
IncomeValue 17 436 2.56 6,413,435
Yield 27 230 1.35 3,385,940
GARP 125 3,346 19.74 49,430,359
HedgeFund 82 1,128 6.68 16,719,235
BrokerDealer 41 728 4.28 10,709,292
Specialty 10 121 0.71 1,784,423
SectorSpecific 3 22 0.13 334,945
Quantitative 1 0 0.00 20
CoreValue 136 1,530 9.12 22,846,937
DeepValue 40 719 4.25 10,646,455
Momentum 1 1 0.01 18,011
Top Holders: Institutional Investor
  Shares Held % O/S Shares Change Filing Date
The Vanguard Group, Inc. 27,490,927 9.54 1,119,638 12/31/2016
State Street Global Advisors (US) 14,860,382 5.16 994,472 12/31/2016
BlackRock Institutional Trust Company, N.A. 12,942,267 4.49 644,657 12/31/2016
ClearBridge Investments, LLC 10,609,621 3.68 -455,009 12/31/2016
Fidelity Management & Research Company 5,187,175 1.80 -2,615,107 12/31/2016
T. Rowe Price Associates, Inc. 4,935,918 1.71 -3,378,158 12/31/2016
Franklin Advisers, Inc. 4,000,000 1.39 -1,068,090 12/31/2016
OppenheimerFunds, Inc. 3,865,646 1.34 -271,134 12/31/2016
Columbia Threadneedle Investments (US) 3,658,169 1.27 1,314,650 12/31/2016
LSV Asset Management 3,430,045 1.19 -439,136 12/31/2016
Neuberger Berman, LLC 3,354,988 1.16 -344,305 12/31/2016
TIAA Global Asset Management 2,985,077 1.04 71,473 12/31/2016
Dimensional Fund Advisors, L.P. 2,971,065 1.03 477,939 12/31/2016
Geode Capital Management, L.L.C. 2,766,658 0.96 -84,139 12/31/2016
Lyrical Asset Management LP 2,499,205 0.87 87,437 12/31/2016
Invesco PowerShares Capital Management LLC 2,300,993 0.80 181,655 12/31/2016
Fidelity Worldwide Investment (UK) Ltd. 2,275,067 0.79 -348,854 12/31/2016
Northern Trust Investments, Inc. 2,209,648 0.77 -283,354 12/31/2016
Norges Bank Investment Management (NBIM) 2,185,652 0.76 48,181 12/31/2015
Seizert Capital Partners, L.L.C. 2,171,424 0.75 -90,918 12/31/2016
Wellington Management Company, LLP 2,152,395 0.75 980,500 12/31/2016
Amerigo Asset Management 2,100,469 0.73 1,400,008 12/31/2016
TCW Asset Management Company 2,093,568 0.73 466,901 12/31/2016
Brandes Investment Partners, L.P. 2,060,114 0.72 -125,314 12/31/2016
Goldman Sachs & Company, Inc. 2,043,076 0.71 -8,496 12/31/2016
Allianz Global Investors U.S. LLC 2,022,326 0.70 1,117,843 12/31/2016
Artemis Investment Management LLP 1,996,520 0.69 154,801 12/31/2016
Passport Capital LLC 1,793,954 0.62 595,868 12/31/2016
First Pacific Advisors, LLC 1,720,010 0.60 -165,220 12/31/2016
Iridian Asset Management LLC 1,611,046 0.56 1,599,591 12/31/2016
Two Sigma Investments, LP 1,575,012 0.55 -853,657 12/31/2016
New York State Common Retirement System 1,555,401 0.54 173,720 12/31/2016
Wells Fargo Advisors 1,529,697 0.53 53,918 12/31/2016
BlackRock Investment Management (UK) Ltd. 1,447,669 0.50 -251,073 12/31/2016
Los Angeles Capital Management And Equity Research 1,433,590 0.50 248,275 12/31/2016
APG Asset Management 1,413,944 0.49 -82,424 12/31/2016
Viking Global Investors LP 1,405,015 0.49 1,405,015 12/31/2016
Managed Account Advisors LLC 1,403,353 0.49 66,165 12/31/2016
Fred Alger Management, Inc. 1,354,545 0.47 522,340 12/31/2016
Mellon Capital Management Corporation 1,327,589 0.46 15,051 12/31/2016
Sirios Capital Management, L.P. 1,326,756 0.46 34,834 12/31/2016
AGF Investments Inc. 1,300,764 0.45 -63,417 12/31/2016
Bank of America Merrill Lynch (US) 1,289,627 0.45 442,702 12/31/2016
Legal & General Investment Management Ltd. 1,283,302 0.45 18,149 12/31/2016
Miller/Howard Investments, Inc. 1,266,478 0.44 -50,703 12/31/2016
Wells Capital Management Inc. 1,220,522 0.42 32,653 12/31/2016
DNB Asset Management AS 1,150,491 0.40 -1,089,984 12/31/2016
PRIMECAP Management Company 1,145,171 0.40 -32,657 12/31/2016
Victory Capital Management Inc. 1,140,687 0.40 319,762 12/31/2016
Appaloosa Management, L.P. 1,120,000 0.39 -30,000 12/31/2016

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.