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Stock Information

Ownership Profile

Shareholder Breakdown
  Holders Values ($) % O/S Shares
Institution 1,118 22,215 87.48 258,212,089
Mutual Fund 1,755 10,205 40.33 119,044,098
Institutional Shareholder Rotation
  Holders Values Change ($) % O/S Shares Change
Buyers 562 2,603 10.31 30,442,754
Sellers 532 -2,507 9.85 -29,076,165
Net -- 96 0.46 1,366,589
Institutional Shareholder Concentration
    Values ($) % O/S Shares
Top 10 Inst.   8,778 34.42 101,600,042
Top 20 Inst.   11,254 44.13 130,257,650
Top 50 Inst.   14,979 58.91 173,894,756
Total Inst.   14,979 58.91 173,894,756
Institutional Shareholder Style
  Holders Values ($) % O/S Shares
Index 60 6,891 27.02 79,770,045
AggresGr 15 249 0.98 2,878,624
CoreGrowth 211 3,344 13.12 38,716,001
Growth 58 319 1.26 3,705,445
IncomeValue 18 230 0.91 2,679,522
Yield 25 200 0.78 2,314,665
BrokerDealer 38 1,109 4.35 12,839,825
GARP 144 3,182 12.53 36,985,625
HedgeFund 89 1,824 7.20 21,247,446
SectorSpecific 1 2 0.02 49,214
Specialty 13 194 0.76 2,240,032
VCPrivateEquity 1 0 0.00 3,202
CoreValue 149 3,445 13.70 40,453,836
DeepValue 37 685 2.72 8,022,217
Momentum 2 7 0.03 75,511
Top Holders: Institutional Investor
  Shares Held % O/S Shares Change Filing Date
The Vanguard Group, Inc. 31,179,102 10.56 1,236,253 09/30/2017
BlackRock Institutional Trust Company, N.A. 14,092,346 4.77 339,476 09/30/2017
Capital World Investors 12,577,575 4.26 1,074,167 09/30/2017
State Street Global Advisors (US) 11,574,325 3.92 -214,060 09/30/2017
ClearBridge Investments, LLC 8,864,222 3.00 -481,523 09/30/2017
Iridian Asset Management LLC 6,334,041 2.15 692,335 09/30/2017
AQR Capital Management, LLC 5,549,254 1.88 4,081,151 09/30/2017
Columbia Threadneedle Investments (US) 4,063,750 1.38 -380,116 09/30/2017
Geode Capital Management, L.L.C. 3,747,271 1.27 586,768 09/30/2017
T. Rowe Price Associates, Inc. 3,618,156 1.23 -563,878 09/30/2017
Lyrical Asset Management LP 3,204,289 1.09 119,985 09/30/2017
LSV Asset Management 3,135,088 1.06 -32,328 09/30/2017
Goldman Sachs & Company, Inc. 3,127,531 1.06 1,637,634 09/30/2017
Dimensional Fund Advisors, L.P. 3,086,925 1.05 83,030 09/30/2017
Citadel LLC 2,851,319 0.97 62,951 09/30/2017
OppenheimerFunds, Inc. 2,824,099 0.96 -216,740 09/30/2017
Invesco PowerShares Capital Management LLC 2,643,680 0.90 278,926 09/30/2017
Neuberger Berman, LLC 2,638,934 0.89 19,647 09/30/2017
Appaloosa Management, L.P. 2,575,138 0.87 5,138 09/30/2017
Janus Henderson Investors 2,570,605 0.87 575,772 09/30/2017
Norges Bank Investment Management (NBIM) 2,476,879 0.84 -423,955 12/31/2016
Nuveen LLC 2,447,542 0.83 -277,007 09/30/2017
Northern Trust Investments, Inc. 2,397,839 0.81 185,303 09/30/2017
Fidelity Management & Research Company 2,107,375 0.71 -986,028 09/30/2017
Fred Alger Management, Inc. 2,000,285 0.68 -821,310 09/30/2017
TCW Asset Management Company 1,782,318 0.60 36,688 09/30/2017
Bank of America Merrill Lynch (US) 1,747,646 0.59 166,202 09/30/2017
Managed Account Advisors LLC 1,698,487 0.58 694,539 09/30/2017
Mellon Capital Management Corporation 1,659,042 0.56 404,785 09/30/2017
Legal & General Investment Management Ltd. 1,484,046 0.50 33,655 09/30/2017
Renaissance Technologies LLC 1,454,749 0.49 1,315,600 09/30/2017
BlackRock Investment Management (UK) Ltd. 1,437,937 0.49 -32,783 09/30/2017
Wells Fargo Advisors 1,413,814 0.48 -156,379 09/30/2017
Schroder Investment Management Ltd. (SIM) 1,413,000 0.48 550,800 09/30/2017
Artemis Investment Management LLP 1,351,667 0.46 -1,531,115 09/30/2017
Victory Capital Management Inc. 1,343,096 0.46 -577,696 09/30/2017
New York State Common Retirement Fund 1,324,735 0.45 -48,269 09/30/2017
Capital International Investors 1,200,000 0.41 1,200,000 09/30/2017
First Trust Advisors L.P. 1,190,932 0.40 277,179 09/30/2017
Charles Schwab Investment Management, Inc. 1,186,354 0.40 120,942 09/30/2017
Kensico Capital Management Corp. 1,094,508 0.37 761,000 09/30/2017
Schweizerische Nationalbank 1,073,763 0.36 21,900 09/30/2017
PRIMECAP Management Company 1,069,843 0.36 -54,253 09/30/2017
New Jersey Division of Investment 1,062,209 0.36 66,000 09/30/2017
Susquehanna Financial Group, LLLP 1,060,032 0.36 400,019 09/30/2017
Boston Partners 1,046,658 0.35 3,444 09/30/2017
Glenmede Investment Management LP 1,042,982 0.35 508,021 09/30/2017
APG Asset Management 1,033,521 0.35 57,200 09/30/2017
St. Denis J. Villere & Company, LLC 1,031,018 0.35 100 09/30/2017
UBS Asset Management (Switzerland) 1,004,829 0.34 -8,964 09/30/2017

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.