WESTERN DIGITAL CORP

Ticker: WDC CUSIP: 958102105 Class: EQTY

Note: Option positions (PUT/CALL) are excluded.

InstitutionSharesValue ($000)
VANGUARD GROUP INC42,348,660$7,295,404
BlackRock, Inc.35,509,518$6,117,225
FMR LLC33,793,801$5,821,658
STATE STREET CORP15,695,954$2,703,942
JPMORGAN CHASE & CO14,295,965$2,462,766
BANK OF AMERICA CORP /DE/12,044,651$2,074,932
GEODE CAPITAL MANAGEMENT, LLC9,282,432$1,593,883
MORGAN STANLEY8,944,662$1,540,897
AMERIPRISE FINANCIAL INC8,520,425$1,467,814
WCM INVESTMENT MANAGEMENT, LLC6,691,209$1,178,054
D. E. Shaw & Co., Inc.5,701,318$982,166
Invesco Ltd.5,455,243$939,775
NORGES BANK4,578,446$788,729
Nuveen, LLC4,563,476$786,150
GOLDMAN SACHS GROUP INC4,559,713$785,502
UBS Group AG4,550,821$783,970
NORTHERN TRUST CORP3,671,955$632,568
DIMENSIONAL FUND ADVISORS LP3,565,342$614,316
AQR CAPITAL MANAGEMENT LLC2,972,703$512,107
UBS ASSET MANAGEMENT AMERICAS INC2,809,409$483,977
FRED ALGER MANAGEMENT, LLC2,684,341$462,431
PRICE T ROWE ASSOCIATES INC /MD/2,611,856$450
Amundi2,399,736$413,403
Maple Rock Capital Partners Inc.2,381,525$410,265
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2,266,709$390,486
DEUTSCHE BANK AG\2,231,609$384,439
Bank of New York Mellon Corp2,073,036$357,122
Legal & General Group Plc2,033,555$350,321
ROYAL BANK OF CANADA1,983,053$341,619
AMF Tjanstepension AB1,767,959$304,566
National Pension Service1,691,659$291,422
ALLIANCEBERNSTEIN L.P.1,629,027$280,632
BARCLAYS PLC1,526,384$262,950
BNP PARIBAS ARBITRAGE, SA1,398,080$240,847
Robeco Institutional Asset Management B.V.1,376,751$237,173
CITIGROUP INC1,359,209$234,151
Castle Hook Partners LP1,325,670$228,373
CITADEL ADVISORS LLC1,319,766$227,356
HSBC HOLDINGS PLC1,267,785$218,093
Soroban Capital Partners LP1,146,273$137,622
BANK OF NOVA SCOTIA1,128,963$194,486
NOMURA ASSET MANAGEMENT CO LTD1,122,095$193,303
Capital World Investors1,063,607$183,228
BANK OF MONTREAL /CAN/1,031,052$177,619
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.1,025,447$176,654
PRUDENTIAL FINANCIAL INC1,019,153$175,569
PRINCIPAL FINANCIAL GROUP INC992,731$171,025
RENAISSANCE TECHNOLOGIES LLC992,533$170,984
Swiss National Bank950,807$163,796
Holocene Advisors, LP934,982$161,069
Polar Capital Holdings Plc913,192$157,316
Sumitomo Mitsui Trust Holdings, Inc.887,059$152,814
Trivest Advisors Ltd875,000$150,736
WELLS FARGO & COMPANY/MN865,796$149,151
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM798,760$137,602
PRIMECAP MANAGEMENT CO/CA/753,540$129,812
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.751,202$141,001
LSV ASSET MANAGEMENT744,412$128
Atalan Capital Partners, LP705,400$121,519
WORLDQUANT MILLENNIUM ADVISORS LLC641,925$110,584
RHUMBLINE ADVISERS635,036$109,398
FIRST TRUST ADVISORS LP627,179$108,044
ProShare Advisors LLC618,061$106,473
KBC Group NV597,009$103
CAISSE DE DEPOT ET PLACEMENT DU QUEBEC593,296$102,207
ENVESTNET ASSET MANAGEMENT INC593,273$102,203
Wolf Hill Capital Management, LP590,395$101,707
VICTORY CAPITAL MANAGEMENT INC587,498$101,208
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM544,524$93,805
PARNASSUS INVESTMENTS, LLC523,497$90,183
Squarepoint Ops LLC522,290$89,975
Gotham Asset Management, LLC506,754$87,299
MACKENZIE FINANCIAL CORP503,294$88,436
SEI INVESTMENTS CO471,197$81,171
NEUBERGER BERMAN GROUP LLC425,789$73,351
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt415,613$71,598
WT Asset Management Ltd411,458$70,882
Alta Park Capital, LP393,479$67,785
Universal- Beteiligungs- und Servicegesellschaft mbH384,090$66,157
CANADA PENSION PLAN INVESTMENT BOARD382,210$65,843
BAHL & GAYNOR INC374,975$64,597
Quantinno Capital Management LP373,185$64,289
NATIXIS ADVISORS, L.P.372,984$64
Korea Investment CORP370,511$63,828
Voya Investment Management LLC368,622$63,503
TEACHER RETIREMENT SYSTEM OF TEXAS367,340$63,282
FRANKLIN RESOURCES INC356,972$61,496
AustralianSuper Pty Ltd351,672$60,583
Pictet Asset Management Holding SA342,516$59,040
SIMPLEX TRADING, LLC341,762$58,875
Russell Investments Group, Ltd.341,745$58,954
DANSKE BANK A/S340,523$58,662
RAYMOND JAMES FINANCIAL INC336,803$58,021
Clal Insurance Enterprises Holdings Ltd333,750$57
LPL Financial LLC333,217$57,403
HAWK RIDGE CAPITAL MANAGEMENT LP325,700$56,108
Slate Path Capital LP321,278$55,347
MILLENNIUM MANAGEMENT LLC317,205$54,645
Amanah Holdings Trust315,000$54,265
NOMURA HOLDINGS INC313,990$54,091
1056 other institutions32,210,587$4,995,202
Total (1,156 institutions)333,663,621$56,098,092