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WESTERN DIGITAL CORP
WESTERN DIGITAL CORP. Institutional holdings reported to the SEC.

Institutional Holders (2015Q1)
Portfolio Summary: 652 Institutional holders with a total value of $19,176,844,287.
#
Manager Name
Shares
Value ($)
%
Options
Notes
101 UNITED SERVICES AUTOMOBILE ASSOCIATION 411,603 37,460,000 0.20%
102 TWO SIGMA INVESTMENTS, LP 396,425 36,079,000 0.19%
103 Parallax Volatility Advisers, L.P. 382,800 34,839,000 0.18% Put
104 FEDERATED HERMES, INC. 381,089 34,684,000 0.18%
105 STATE OF WISCONSIN INVESTMENT BOARD 378,737 34,469,000 0.18%
106 GRATICULE ASIA MACRO ADVISORS LLC 354,000 32,218,000 0.17% Call
107 GAM Holding AG 353,932 32,211,000 0.17%
108 ROTHSCHILD & CO ASSET MANAGEMENT US INC. 345,654 31,458,000 0.16%
109 RENAISSANCE GROUP LLC 344,990 31,398,000 0.16%
110 Swiss National Bank 336,296 30,606,000 0.16%
111 WESTPAC BANKING CORP 292,658 30,116,164 0.16%
112 BlackRock Japan Co. Ltd 328,401 29,888,000 0.16%
113 THOMPSON SIEGEL & WALMSLEY LLC 318,339 28,972,000 0.15%
114 ROYAL BANK OF CANADA 316,962 28,848,000 0.15%
115 Evercore Wealth Management, LLC 314,442 28,626,000 0.15%
116 Nationwide Fund Advisors 313,181 28,503,000 0.15%
117 CANADA LIFE ASSURANCE Co 308,273 27,983,000 0.15%
118 Pine River Capital Management L.P. 306,695 27,912,000 0.15%
119 Sculptor Capital LP 301,900 27,475,000 0.14% Put
120 PIEDMONT INVESTMENT ADVISORS INC 299,287 27,238,110 0.14%
121 Artemis Investment Management LLP 297,890 27,107,000 0.14%
122 LOS ANGELES CAPITAL MANAGEMENT LLC 295,354 26,880,000 0.14%
123 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 293,267 26,690,229 0.14%
124 Contour Asset Management LLC 288,800 26,284,000 0.14% Put
125 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 287,778 26,191,000 0.14%
126 BANK OF MONTREAL /CAN/ 286,525 26,077,000 0.14%
127 Korea Investment CORP 285,100 25,947,000 0.14%
128 SUSQUEHANNA INTERNATIONAL GROUP, LLP 278,881 25,381,000 0.13%
129 RHUMBLINE ADVISERS 276,141 25,132,000 0.13%
130 ACADIAN ASSET MANAGEMENT LLC 275,510 25,074,000 0.13%
131 AMP Capital Investors Ltd 267,829 24,891,000 0.13%
132 AEGON ASSET MANAGEMENT UK PLC 265,163 24,127,182 0.13%
133 BNP PARIBAS FINANCIAL MARKETS 263,304 23,963,297 0.12%
134 GLENMEDE TRUST CO NA 256,796 23,370,000 0.12%
135 JACOBS LEVY EQUITY MANAGEMENT, INC 254,945 23,203,000 0.12%
136 BARCLAYS PLC 251,691 22,904,000 0.12%
137 VOYA INVESTMENT MANAGEMENT LLC 248,051 22,576,000 0.12%
138 GOLDMAN SACHS GROUP INC 240,500 21,888,000 0.11% Call
139 Parallax Volatility Advisers, L.P. 240,400 21,878,000 0.11% Call
140 AMUNDI ASSET MANAGEMENT US, INC. 235,657 21,447,000 0.11%
141 NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC 226,668 20,629,000 0.11%
142 BALYASNY ASSET MANAGEMENT L.P. 223,363 20,328,000 0.11%
143 MANUFACTURERS LIFE INSURANCE COMPANY, THE 222,774 20,275,000 0.11%
144 FACTORY MUTUAL INSURANCE CO 221,000 20,112,000 0.10%
145 AFFINITY INVESTMENT ADVISORS, LLC 220,421 20,061,000 0.10%
146 Polar Capital LLP 220,354 20,051,000 0.10%
147 DekaBank Deutsche Girozentrale 210,231 19,327,000 0.10%
148 MACQUARIE GROUP LTD 212,003 19,295,000 0.10%
149 CREDIT AGRICOLE S A 208,519 18,978,000 0.10%
150 Nuveen Asset Management, LLC 201,984 18,383,000 0.10%
Page 3 of 14

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.