WESTERN DIGITAL CORP (WDC) Institutional Shareholders
WESTERN DIGITAL CORP (WDC) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $202.86B in WDC holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of WDC tracked by InsiderSet, reporting ownership valued at approximately $21.05B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $13.74B, representing an estimated loss of -34.72% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 55% of the total disclosed WDC value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Fmr Llc, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in WESTERN DIGITAL CORP (WDC).
This page ranks the largest institutional WDC shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
1,803
Total Reported Value
$202.86B
Largest Holder
Blackrock, Inc.
Largest Position
$21.05B
Insider Transactions (90d)
50
Latest Filing Quarter
Q2 2026
New Institutional Positions
142
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.31% | 32,953,613 | $21,048,132,217 | $13,740,668,013 | -$7,307,464,204 | -34.72% | |
| Fmr Llc | 0.72% | 25,983,645 | $16,596,273,651 | $10,834,400,456 | -$5,761,873,195 | -34.72% | |
| Vanguard Capital Management Llc | 0.31% | 22,510,811 | $14,378,105,202 | $9,386,332,863 | -$4,991,772,339 | -34.72% | |
| Jpmorgan Chase & Co | 0.65% | 17,007,789 | $11,087,038,554 | $7,091,737,779 | -$3,995,300,775 | -36.04% | |
| Capital World Investors | 1.25% | 16,598,211 | $10,601,693,655 | $6,920,956,041 | -$3,680,737,614 | -34.72% | |
| State Street Corp | 0.31% | 16,276,615 | $10,396,199,533 | $6,786,860,157 | -$3,609,339,376 | -34.72% | |
| Invesco Ltd. | 0.73% | 14,435,741 | $9,220,396,498 | $6,019,270,925 | -$3,201,125,573 | -34.72% | |
| Vanguard Portfolio Management Llc | 0.38% | 13,109,474 | $8,373,283,234 | $5,466,257,374 | -$2,907,025,860 | -34.72% | |
| Geode Capital Management, Llc | 0.29% | 8,411,628 | $5,352,976,142 | $3,507,396,527 | -$1,845,579,615 | -34.48% | |
| Morgan Stanley | 0.28% | 8,148,144 | $5,204,384,391 | $3,397,531,604 | -$1,806,852,787 | -34.72% | |
| Bank Of America Corp | 0.27% | 6,489,630 | $4,145,056,679 | $2,705,981,021 | -$1,439,075,658 | -34.72% | |
| Goldman Sachs Group Inc | 0.35% | 5,178,993 | $3,307,926,252 | $2,159,484,711 | -$1,148,441,541 | -34.72% | |
| Norges Bank | 0.29% | 4,629,232 | $2,956,783,063 | $1,930,250,867 | -$1,026,532,196 | -34.72% | |
| Nuveen, Llc | 0.58% | 3,819,103 | $2,439,337,341 | $1,592,451,378 | -$846,885,963 | -34.72% | |
| Northern Trust Corp | 0.27% | 3,663,369 | $2,339,867,048 | $1,527,514,972 | -$812,352,076 | -34.72% | |
| Ameriprise Financial Inc | 0.44% | 3,386,190 | $2,162,146,793 | $1,411,939,644 | -$750,207,149 | -34.70% | |
| Aqr Capital Management Llc | 0.65% | 2,940,948 | $1,878,442,049 | $1,226,287,088 | -$652,154,961 | -34.72% | |
| Bank Of New York Mellon Corp | 0.31% | 2,916,885 | $1,863,072,931 | $1,216,253,538 | -$646,819,393 | -34.72% | |
| Capital Research Global Investors | 0.25% | 2,816,570 | $1,799,092,582 | $1,174,425,193 | -$624,667,389 | -34.72% | |
| Peakshares Llc | 1.20% | 2,535 | $1,619,155,000 | $1,057,019 | -$1,618,097,981 | -99.93% | |
| Legal & General Group Plc | 0.33% | 2,509,592 | $1,602,926,605 | $1,046,424,576 | -$556,502,029 | -34.72% | |
| Dimensional Fund Advisors Lp | 0.28% | 2,448,137 | $1,564,050,658 | $1,020,799,685 | -$543,250,973 | -34.73% | |
| Fred Alger Management, Llc | 4.70% | 2,206,326 | $1,409,224,543 | $919,971,752 | -$489,252,791 | -34.72% | |
| Charles Schwab Investment Management Inc | 0.18% | 2,132,395 | $1,362,003,335 | $889,144,743 | -$472,858,592 | -34.72% | |
| Price T Rowe Associates Inc | 0.13% | 2,075,801 | $1,325,856,000 | $865,546,743 | -$460,309,257 | -34.72% | |
| Vanguard Fiduciary Trust Co | 0.28% | 1,979,131 | $1,264,110,552 | $825,238,253 | -$438,872,299 | -34.72% | |
| D. E. Shaw & Co., Inc. | 0.75% | 1,901,787 | $1,214,709,393 | $792,988,125 | -$421,721,268 | -34.72% | |
| Capital International Investors | 0.24% | 1,803,588 | $1,152,013,495 | $752,042,088 | -$399,971,407 | -34.72% | |
| Exchange Traded Concepts, Llc | 5.65% | 1,789,659 | $1,143,090,996 | $746,234,113 | -$396,856,883 | -34.72% | |
| Wcm Investment Management, Llc | 1.93% | 1,632,121 | $1,063,947,037 | $680,545,493 | -$383,401,544 | -36.04% | |
| Bank Of Montreal | 0.38% | 1,634,675 | $1,044,099,617 | $681,610,435 | -$362,489,182 | -34.72% | |
| Bnp Paribas Financial Markets | 0.50% | 1,493,593 | $953,987,720 | $622,783,473 | -$331,204,247 | -34.72% | |
| Anther Capital Ltd | 23.09% | 1,411,575 | $901,601,184 | $588,584,428 | -$313,016,756 | -34.72% | |
| Deutsche Bank Ag\ | 0.26% | 1,386,468 | $885,564,841 | $578,115,562 | -$307,449,279 | -34.72% | |
| National Pension Service | 0.57% | 1,380,902 | $882,009,725 | $575,794,707 | -$306,215,018 | -34.72% | |
| Maple Rock Capital Partners Inc. | 17.01% | 1,357,834 | $867,275,732 | $566,176,043 | -$301,099,689 | -34.72% | |
| Royal Bank Of Canada | 0.14% | 1,312,031 | $838,021,000 | $547,077,566 | -$290,943,434 | -34.72% | |
| Ubs Group Ag | 0.13% | 1,258,485 | $803,819,539 | $524,750,490 | -$279,069,049 | -34.72% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.16% | 2,902,748 | $785,164,308 | $1,210,358,834 | +$425,194,526 | +54.15% | |
| Hsbc Holdings Plc | 0.36% | 1,178,779 | $752,750,263 | $491,515,480 | -$261,234,783 | -34.70% | |
| Jane Street Group, Llc | 0.43% | 1,052,246 | $672,090,565 | $438,755,015 | -$233,335,550 | -34.72% | |
| Citigroup Inc | 0.30% | 1,007,000 | $643,190,766 | $419,888,790 | -$223,301,976 | -34.72% | |
| Value Aligned Research Advisors, Llc | 3.77% | 988,429 | $631,329,371 | $412,145,240 | -$219,184,131 | -34.72% | |
| Trivest Advisors Ltd | 19.73% | 982,600 | $627,606,272 | $409,714,722 | -$217,891,550 | -34.72% | |
| Swiss National Bank | 0.33% | 975,987 | $623,382,417 | $406,957,299 | -$216,425,118 | -34.72% | |
| Qube Research & Technologies Ltd | 0.65% | 915,929 | $585,022,171 | $381,914,915 | -$203,107,256 | -34.72% | |
| National Bank Of Canada | 0.51% | 909,546 | $580,953,189 | $379,253,396 | -$201,699,793 | -34.72% | |
| Castle Hook Partners Lp | 6.18% | 903,374 | $577,003,041 | $376,679,857 | -$200,323,184 | -34.72% | |
| Mitsubishi Ufj Asset Management Co., Ltd. | 0.31% | 875,582 | $559,251,735 | $365,091,427 | -$194,160,308 | -34.72% | |
| Wells Fargo & Company/Mn | 0.10% | 863,445 | $551,499,742 | $360,030,662 | -$191,469,080 | -34.72% |
Frequently asked questions about WDC
Who owns the most WDC stock?
The largest holders of WDC are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for WESTERN DIGITAL CORP (WDC).
Is WDC widely held by superinvestors?
Many widely followed stocks like WDC appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly WDC is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.