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

Institutional Holders (2014Q4)
Portfolio Summary: 648 Institutional holders with a total value of $23,265,160,621.
#
Manager Name
Shares
Value ($)
%
Options
Notes
351 MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 34,438 3,812,000 0.02%
352 TWIN CAPITAL MANAGEMENT INC 34,800 3,852,000 0.02%
353 OREGON PUBLIC EMPLOYEES RETIREMENT FUND 34,982 3,873,000 0.02%
354 BP PLC 35,000 3,874,000 0.02%
355 DARUMA CAPITAL MANAGEMENT LLC 35,502 3,930,000 0.02%
356 BARINGS LLC 36,683 4,061,000 0.02%
357 NOMURA ASSET MANAGEMENT CO LTD 36,365 4,082,000 0.02%
358 MESSNER & SMITH THEME VALUE INVESTMENT MANAGEMENT LTD /CA/ 37,969 4,203,000 0.02%
359 Utah Retirement Systems 38,500 4,262,000 0.02%
360 Smith, Graham & Co., Investment Advisors, LP 38,760 4,291,000 0.02%
361 SECURIAN ASSET MANAGEMENT, INC 39,264 4,346,000 0.02%
362 Parametric Risk Advisors LLC 40,000 4,428,000 0.02%
363 GRUBER & MCBAINE CAPITAL MANAGEMENT LLC 40,000 4,428,000 0.02%
364 Firsthand Capital Management, Inc. 40,000 4,428,000 0.02%
365 KEYBANK NATIONAL ASSOCIATION/OH 41,002 4,539,000 0.02%
366 HBK INVESTMENTS L P 41,200 4,561,000 0.02%
367 Dai-ichi Life Holdings, Inc. 42,392 4,693,000 0.02%
368 Alyeska Investment Group, L.P. 42,411 4,695,000 0.02%
369 EAGLE ASSET MANAGEMENT INC 43,261 4,788,000 0.02%
370 CADENCE CAPITAL MANAGEMENT LLC 43,720 4,840,000 0.02%
371 DIKER MANAGEMENT LLC 44,485 4,924,000 0.02%
372 Advisors Asset Management, Inc. 45,588 5,047,000 0.02%
373 O'SHAUGHNESSY ASSET MANAGEMENT, LLC 47,111 5,215,000 0.02%
374 Robert W. Baird & Co. Inc 48,145 5,330,000 0.02%
375 Cypress Capital Group 49,085 5,434,000 0.02%
376 Aperio Group, LLC 49,935 5,528,000 0.02%
377 BARCLAYS PLC 50,600 5,566,000 0.02% Put
378 ING GROEP NV 50,689 5,611,000 0.02%
379 Zurcher Kantonalbank (Zurich Cantonalbank) 51,146 5,662,000 0.02%
380 EXXONMOBIL INVESTMENT MANAGEMENT INC /TX 51,465 5,697,000 0.02%
381 Placemark Investments, Inc. 51,452 5,700,000 0.02%
382 Spot Trading L.L.C 51,800 5,734,000 0.02% Put
383 RS INVESTMENT MANAGEMENT CO LLC 52,812 5,770,000 0.02%
384 FJARDE AP-FONDEN /FOURTH SWEDISH NATIONAL PENSION FUND 52,861 5,873,000 0.03%
385 PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 53,453 5,917,000 0.03%
386 Mitsubishi UFJ Asset Management Co., Ltd. 54,219 5,987,000 0.03%
387 IBM Retirement Fund 54,947 6,083,000 0.03%
388 UBS Group AG 55,400 6,133,000 0.03% Put
389 CITIGROUP INC 55,700 6,166,000 0.03% Call
390 BLB&B Advisors, LLC 56,022 6,202,000 0.03%
391 HARTFORD INVESTMENT MANAGEMENT CO 56,657 6,272,000 0.03%
392 REGENTATLANTIC CAPITAL LLC 57,601 6,376,431 0.03%
393 BARCLAYS PLC 60,000 6,600,000 0.03% Call
394 Bowling Portfolio Management LLC 59,778 6,617,000 0.03%
395 Arizona State Retirement System 61,100 6,763,000 0.03%
396 Gulf International Bank (UK) Ltd 64,975 7,193,000 0.03%
397 MEEDER ASSET MANAGEMENT INC 65,577 7,259,000 0.03%
398 WESTWOOD HOLDINGS GROUP INC 66,901 7,406,000 0.03%
399 STONERIDGE INVESTMENT PARTNERS LLC 68,393 7,571,000 0.03%
400 PRUDENTIAL PLC 69,085 7,648,000 0.03%
Page 8 of 13

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.