Western Digital Corporation
MX ˙ BMV ˙ US9581021055
SecurityMX:WDC / Western Digital Corporation
InstitutionUs Bancorp \de\
Latest Disclosed Ownership93,840 shares
Latest Disclosed Value $ 25,382,903
Us Bancorp \de\ reports 0.30% decrease in ownership of WDC / Western Digital Corporation

On May 14, 2026 - Us Bancorp \de\ filed a 13F-HR form disclosing ownership of 93,840 shares of Western Digital Corporation (MX:WDC) valued at $25,382,903 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 94,122 shares of Western Digital Corporation. This represents a change in shares of -0.30% 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.

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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)
2026-05-14 2026-03-31 13F WESTERN DIGITAL COM 958102105 93,840 -282 -0.30 25,383 56.54 0.0095
2026-01-30 2025-12-31 13F WESTERN DIGITAL COM 958102105 94,122 -627 -0.66 16,214 42.54 0.0190
2025-11-12 2025-09-30 13F WESTERN DIGITAL COM 958102105 94,749 21,572 29.48 11,376 142.95 0.0135
2025-07-24 2025-06-30 13F WESTERN DIGITAL COM 958102105 73,177 2,988 4.26 4,683 65.03 0.0059
2025-05-08 2025-03-31 13F WESTERN DIGITAL COM 958102105 70,189 -4,621 -6.18 2,838 -36.39 0.0038
2025-02-05 2024-12-31 13F WESTERN DIGITAL COM 958102105 74,810 -6,507 -8.00 4,461 -19.68 0.0058
2024-10-28 2024-09-30 13F WESTERN DIGITAL COM 958102105 81,317 -2,840 -3.37 5,553 -12.91 0.0071
2024-08-07 2024-06-30 13F WESTERN DIGITAL COM 958102105 84,157 -16,927 -16.75 6,377 -7.55 0.0087
2024-05-08 2024-03-31 13F WESTERN DIGITAL COM 958102105 101,084 -14,167 -12.29 6,898 14.28 0.0096
2024-02-09 2023-12-31 13F WESTERN DIGITAL COM 958102105 115,251 -23,594 -16.99 6,036 -4.74 0.0089
2023-11-03 2023-09-30 13F WESTERN DIGITAL COM 958102105 138,845 -8,782 -5.95 6,335 13.15 0.0104
2023-08-10 2023-06-30 13F WESTERN DIGITAL COM 958102105 147,627 -25,429 -14.69 5,599 -14.11 0.0090
2023-05-09 2023-03-31 13F WESTERN DIGITAL CORP COM COMMON STOCK 958102105 173,056 -71,984 -29.38 6,519 -15.68 0.0110
2023-02-13 2022-12-31 13F WESTERN DIGITAL CORP COM COMMON STOCK 958102105 245,040 -155,774 -38.86 7,731 -40.74 0.0137
2022-10-27 2022-09-30 13F WESTERN DIGITAL CORP COM COMMON STOCK 958102105 400,814 -60,899 -13.19 13,047 -36.96 0.0269
2022-08-01 2022-06-30 13F WESTERN DIGITAL CORP COM COMMON STOCK 958102105 461,713 -175,569 -27.55 20,698 -34.59 0.0401
2022-05-11 2022-03-31 13F WESTERN DIGITAL CORP COM COMMON STOCK 958102105 637,282 -57,364 -8.26 31,642 -30.15 0.0527
2022-02-11 2021-12-31 13F WESTERN DIGITAL COMMON STOCK 958102105 694,646 -430 -0.06 45,299 15.47 0.0714
2021-11-10 2021-09-30 13F WESTERN DIGITAL COMMON STOCK 958102105 695,076 -825 -0.12 39,229 -20.79 0.0738
2021-08-05 2021-06-30 13F WESTERN DIGITAL COMMON STOCK 958102105 695,901 -23,329 -3.24 49,527 3.17 0.0928
2021-04-28 2021-03-31 13F WESTERN DIGITAL COMMON STOCK 958102105 719,230 -6,298 -0.87 48,007 19.46 0.0971
2021-02-04 2020-12-31 13F WESTERN DIGITAL COMMON STOCK 958102105 725,528 -6,466 -0.88 40,187 50.20 0.0865
2020-11-10 2020-09-30 13F WESTERN DIGITAL COMMON STOCK 958102105 731,994 63,705 9.53 26,755 -9.32 0.0652
2020-08-07 2020-06-30 13F WESTERN DIGITAL COMMON STOCK 958102105 668,289 147,800 28.40 29,505 36.19 0.0774
2020-05-13 2020-03-31 13F WESTERN DIGITAL COMMON STOCK 958102105 520,489 4,095 0.79 21,664 -33.90 0.0676
2020-02-04 2019-12-31 13F WESTERN DIGITAL COMMON STOCK 958102105 516,394 -93,155 -15.28 32,776 -9.84 0.0838
2019-11-08 2019-09-30 13F WESTERN DIGITAL COMMON STOCK 958102105 609,549 -58,094 -8.70 36,354 14.51 0.0991
2019-08-13 2019-06-30 13F WESTERN DIGITAL COMMON STOCK 958102105 667,643 -1,484 -0.22 31,747 -1.28 0.0885
2019-05-08 2019-03-31 13F WESTERN DIGITAL COMMON STOCK 958102105 669,127 111,197 19.93 32,158 55.91 0.0928
2019-02-13 2018-12-31 13F WESTERN DIGITAL COMMON STOCK 958102105 557,930 -331,710 -37.29 20,626 -60.39 0.0666
2018-10-31 2018-09-30 13F WESTERN DIGITAL COMMON STOCK 958102105 889,640 29,449 3.42 52,079 -21.79 0.1508
2018-08-08 2018-06-30 13F WESTERN DIGITAL COMMON STOCK 958102105 860,191 161,754 23.16 66,587 3.33 0.2040
2018-05-08 2018-03-31 13F WESTERN DIGITAL COMMON STOCK 958102105 698,437 234,103 50.42 64,444 74.51 0.1977
2018-02-02 2017-12-31 13F WESTERN DIGITAL COMMON STOCK 958102105 464,334 257,750 124.77 36,929 106.90 0.1129
2017-11-13 2017-09-30 13F WESTERN DIGITAL COMMON STOCK 958102105 206,584 95,279 85.60 17,849 80.99 0.0572
2017-07-19 2017-06-30 13F WESTERN DIGITAL COMMON STOCK 958102105 111,305 -14,227 -11.33 9,862 -4.81 0.0329
2017-05-03 2017-03-31 13F WESTERN DIGITAL COMMON STOCK 958102105 125,532 -32,404 -20.52 10,360 -3.47 0.0355
2017-02-08 2016-12-31 13F WESTERN DIGITAL COMMON STOCK 958102105 157,936 -54,561 -25.68 10,732 -13.62 0.0386
2016-11-04 2016-09-30 13F WESTERN DIGITAL COMMON STOCK 958102105 212,497 -20,945 -8.97 12,424 12.61 0.0461
2016-08-10 2016-06-30 13F WESTERN DIGITAL COMMON STOCK 958102105 233,442 92,547 65.69 11,033 65.76 0.0420
2016-05-13 2016-03-31 13F WESTERN DIGITAL COMMON STOCK 958102105 140,895 50,532 55.92 6,656 22.67 0.0262
2016-02-10 2015-12-31 13F WESTERN DIGITAL COMMON STOCK 958102105 90,363 -154,309 -63.07 5,426 -72.09 0.0218
2015-11-16 2015-09-30 13F WESTERN DIGITAL COMMON STOCK 958102105 244,672 64,940 36.13 19,438 37.91 0.0815
2015-08-10 2015-06-30 13F WESTERN DIGITAL COMMON STOCK 958102105 179,732 4,995 2.86 14,095 -11.37 0.0546
2015-05-08 2015-03-31 13F WESTERN DIGITAL COMMON STOCK 958102105 174,737 11,934 7.33 15,904 -11.76 0.0611
2015-02-13 2014-12-31 13F WESTERN DIGITAL COMMON STOCK 958102105 162,803 14,320 9.64 18,023 24.72 0.0697
2014-11-14 2014-09-30 13F WESTERN DIGITAL COMMON STOCK 958102105 148,483 31,534 26.96 14,451 33.88 0.0585
2014-08-14 2014-06-30 13F WESTERN DIGITAL COMMON STOCK 958102105 116,949 9,581 8.92 10,794 9.48 0.0430
2014-05-14 2014-03-31 13F WESTERN DIGITAL COMMON STOCK 958102105 107,368 -12,613 -10.51 9,859 -2.06 0.0404
2014-02-13 2013-12-31 13F WESTERN DIGITAL COMMON STOCK 958102105 119,981 6,666 5.88 10,066 40.12 0.0408
2013-11-07 2013-09-30 13F WESTERN DIGITAL COMMON STOCK 958102105 113,315 -436 -0.38 7,184 1.71 0.0317
2013-08-09 2013-06-30 13F WESTERN DIGITAL COMMON STOCK 958102105 113,751 113,751 7,063 0.0322
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.