Western Digital Corporation
MX ˙ BMV ˙ US9581021055
SecurityMX:WDC / Western Digital Corporation
InstitutionPrudential Financial Inc
Latest Disclosed Ownership616,644 shares
Latest Disclosed Value $ 166,796,036
Prudential Financial Inc reports 39.49% decrease in ownership of WDC / Western Digital Corporation

On May 13, 2026 - Prudential Financial Inc filed a 13F-HR form disclosing ownership of 616,644 shares of Western Digital Corporation (MX:WDC) valued at $166,796,036 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,019,153 shares of Western Digital Corporation. This represents a change in shares of -39.49% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F WESTERN DIGITAL COM 958102105 616,644 -402,509 -39.49 166,796 -5.00 0.2054
2026-02-13 2025-12-31 13F WESTERN DIGITAL COM 958102105 1,019,153 555,124 119.63 175,569 215.14 0.2120
2025-11-13 2025-09-30 13F WESTERN DIGITAL COM 958102105 464,029 233,196 101.02 55,711 277.16 0.0662
2025-08-12 2025-06-30 13F WESTERN DIGITAL COM 958102105 230,833 47,961 26.23 14,771 99.80 0.0191
2025-05-13 2025-03-31 13F WESTERN DIGITAL COM 958102105 182,872 -2,990 -1.61 7,394 -33.29 0.0105
2025-02-11 2024-12-31 13F WESTERN DIGITAL COM 958102105 185,862 -19,193 -9.36 11,083 -20.86 0.0152
2024-11-14 2024-09-30 13F WESTERN DIGITAL COM 958102105 205,055 -172,342 -45.67 14,003 -51.03 0.0197
2024-08-13 2024-06-30 13F WESTERN DIGITAL COM 958102105 377,397 55,349 17.19 28,595 30.12 0.0429
2024-05-14 2024-03-31 13F WESTERN DIGITAL COM 958102105 322,048 91,486 39.68 21,977 85.61 0.0309
2024-02-13 2023-12-31 13F WESTERN DIGITAL COM 958102105 230,562 -45,523 -16.49 11,841 -6.01 0.0179
2023-11-13 2023-09-30 13F WESTERN DIGITAL COM 958102105 276,085 -43,285 -13.55 12,598 -5.41 0.0198
2023-08-11 2023-06-30 13F WESTERN DIGITAL COM 958102105 319,370 -51,162 -13.81 13,318 -14.15 0.0194
2023-05-12 2023-03-31 13F WESTERN DIGITAL COM 958102105 370,532 -34,389 -8.49 15,512 21.42 0.0243
2023-02-14 2022-12-31 13F WESTERN DIGITAL COM 958102105 404,921 -44,817 -9.97 12,775 -11.95 0.0215
2022-11-04 2022-09-30 13F WESTERN DIGITAL COM 958102105 449,738 -93,165 -17.16 14,508 -40.96 0.0246
2022-08-15 2022-06-30 13F WESTERN DIGITAL COM 958102105 542,903 167,670 44.68 24,575 31.91 0.0390
2022-05-13 2022-03-31 13F WESTERN DIGITAL COM 958102105 375,233 -875,628 -70.00 18,630 -73.50 0.0248
2022-02-14 2021-12-31 13F WESTERN DIGITAL COM 958102105 1,250,861 -264,038 -17.43 70,306 -19.65 0.0874
2021-11-15 2021-09-30 13F WESTERN DIGITAL COM 958102105 1,514,899 730,951 93.24 87,504 56.83 0.1221
2021-08-16 2021-06-30 13F WESTERN DIGITAL COM 958102105 783,948 497,807 173.97 55,794 192.12 0.0768
2021-05-12 2021-03-31 13F WESTERN DIGITAL COM 958102105 286,141 30,142 11.77 19,100 34.71 0.0286
2021-08-16 2020-12-31 13F/A-1 WESTERN DIGITAL COM 0055 958102105 255,999 254,702 19,637.78 14,179 30,068.09 0.0238
2021-02-16 2020-12-31 13F WESTERN DIGITAL COM 958102105 255,999 254,702 14,180 0.0238
2021-08-05 2020-09-30 13F/A-1 WESTERN DIGITAL COM 958102105 1,297 -809 -38.41 47 -49.46 0.0068
2020-11-16 2020-09-30 13F WESTERN DIGITAL COM 958102105 238,480 236,374 8,717 0.0164
2021-08-05 2020-06-30 13F/A-1 WESTERN DIGITAL COM 0044 958102105 2,106 1,411 203.02 93 220.69 0.0172
2020-08-12 2020-06-30 13F WESTERN DIGITAL COM 958102105 398,554 397,859 17,596 0.0339
2021-08-05 2020-03-31 13F/A-1 WESTERN DIGITAL COM 0041 958102105 695 475 215.91 29 107.14 0.0075
2020-05-12 2020-03-31 13F WESTERN DIGITAL COM 958102105 435,838 435,618 18,140 0.0402
2021-08-05 2019-12-31 13F/A-1 WESTERN DIGITAL COM 0063 958102105 220 23 11.68 14 16.67 0.0036
2020-02-11 2019-12-31 13F WESTERN DIGITAL COM 958102105 286,019 285,822 18,154 0.0269
2021-08-05 2019-09-30 13F/A-1 WESTERN DIGITAL COM 0059 958102105 197 27 15.88 12 50.00 0.0039
2019-11-13 2019-09-30 13F WESTERN DIGITAL COM 958102105 271,447 271,277 16,189 0.0257
2021-08-05 2019-06-30 13F/A-1 WESTERN DIGITAL COM 958102105 170 -829,486 -99.98 8 -99.98 0.0028
2019-08-08 2019-06-30 13F WESTERN DIGITAL COM 958102105 458,317 -371,339 21,793 0.0340
2019-05-15 2019-03-31 13F WESTERN DIGITAL COM 958102105 829,656 829,651 16,593,020.00 39,874 17.56 0.0664
2021-08-05 2018-12-31 13F/A-1 WESTERN DIGITAL COM 958102105 5 -809,013 -100.00 0 -100.00
2019-02-07 2018-12-31 13F WESTERN DIGITAL COM 958102105 917,420 108,402 33,917 0.0596
2018-11-07 2018-09-30 13F WESTERN DIGITAL COM 958102105 809,018 -1,623,974 -66.75 47,360 -74.85 0.0698
2018-08-13 2018-06-30 13F WESTERN DIGITAL COM 958102105 2,432,992 401,498 19.76 188,338 0.48 0.2815
2018-05-04 2018-03-31 13F WESTERN DIGITAL COM 958102105 2,031,494 379,104 22.94 187,446 42.64 0.2856
2018-02-13 2017-12-31 13F WESTERN DIGITAL COM 958102105 1,652,390 699,406 73.39 131,415 59.60 0.1790
2017-11-02 2017-09-30 13F WESTERN DIGITAL COM 958102105 952,984 208,494 28.00 82,339 24.83 0.1362
2017-08-07 2017-06-30 13F WESTERN DIGITAL COM 958102105 744,490 298,136 66.79 65,962 79.06 0.0981
2017-05-10 2017-03-31 13F WESTERN DIGITAL COM 958102105 446,354 -26,330 -5.57 36,837 14.69 0.0574
2017-02-07 2016-12-31 13F WESTERN DIGITAL COM 958102105 472,684 -439,573 -48.19 32,119 -39.78 0.0517
2016-11-04 2016-09-30 13F WESTERN DIGITAL COM 958102105 912,257 26,382 2.98 53,340 27.40 0.0881
2016-08-09 2016-06-30 13F WESTERN DIGITAL COM 958102105 885,875 104,528 13.38 41,867 13.43 0.0704
2016-05-09 2016-03-31 13F WESTERN DIGITAL COM 958102105 781,347 99,880 14.66 36,911 -9.80 0.0660
2016-02-12 2015-12-31 13F WESTERN DIGITAL COM 958102105 681,467 75,300 12.42 40,922 -15.02 0.0741
2015-11-10 2015-09-30 13F WESTERN DIGITAL COM 958102105 606,167 -104,580 -14.71 48,154 -13.60 0.0950
2015-08-06 2015-06-30 13F WESTERN DIGITAL COM 958102105 710,747 -166,260 -18.96 55,736 -30.17 0.0990
2015-05-01 2015-03-31 13F WESTERN DIGITAL COM 958102105 877,007 318,790 57.11 79,816 29.16 0.1383
2015-02-06 2014-12-31 13F WESTERN DIGITAL COM 958102105 558,217 25,610 4.81 61,794 19.22 0.1120
2014-11-12 2014-09-30 13F WESTERN DIGITAL COM 958102105 532,607 -179,564 -25.21 51,834 -21.15 0.0975
2014-08-13 2014-06-30 13F WESTERN DIGITAL COM 958102105 712,171 -274,266 -27.80 65,734 -27.43 0.1159
2014-05-14 2014-03-31 13F WESTERN DIGITAL COM 958102105 986,437 -66,890 -6.35 90,574 2.49 0.1686
2014-02-11 2013-12-31 13F WESTERN DIGITAL COM 958102105 1,053,327 -359,850 -25.46 88,374 -1.36 0.1754
2013-11-07 2013-09-30 13F WESTERN DIGITAL COM 958102105 1,413,177 829,730 142.21 89,596 147.33 0.1905
2013-08-07 2013-06-30 13F WESTERN DIGITAL COM 958102105 583,447 583,447 36,226 0.0803
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.