Western Digital Corporation
MX ˙ BMV ˙ US9581021055
SecurityMX:WDC / Western Digital Corporation
InstitutionStrs Ohio
Latest Disclosed Ownership119,438 shares
Latest Disclosed Value $ 32,306,785
Strs Ohio reports 21.34% decrease in ownership of WDC / Western Digital Corporation

On April 24, 2026 - Strs Ohio filed a 13F-HR form disclosing ownership of 119,438 shares of Western Digital Corporation (MX:WDC) valued at $32,306,785 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 151,850 shares of Western Digital Corporation. This represents a change in shares of -21.34% 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)
2026-04-24 2026-03-31 13F WESTERN DIGITAL COM_STK 958102105 119,438 -32,412 -21.34 32,307 23.50 0.1282
2026-02-02 2025-12-31 13F WESTERN DIGITAL COM_STK 958102105 151,850 -21,427 -12.37 26,159 25.75 0.0976
2025-10-30 2025-09-30 13F WESTERN DIGITAL COM_STK 958102105 173,277 -16,985 -8.93 20,804 70.88 0.0763
2025-08-04 2025-06-30 13F WESTERN DIGITAL COM_STK 958102105 190,262 1,277 0.68 12,175 59.35 0.0455
2025-05-28 2025-03-31 13F WESTERN DIGITAL COM_STK 958102105 188,985 1,935 1.03 7,641 -31.50 0.0320
2025-05-28 2024-12-31 13F WESTERN DIGITAL COM_STK 958102105 187,050 -291,314 -60.90 11,154 -65.86 0.0442
2024-11-01 2024-09-30 13F WESTERN DIGITAL COM_STK 958102105 478,364 158,102 49.37 32,667 34.62 0.1257
2024-08-05 2024-06-30 13F WESTERN DIGITAL COM_STK 958102105 320,262 -7,440 -2.27 24,266 110,200.00 0.0959
2024-05-13 2024-03-31 13F WESTERN DIGITAL COM_STK 958102105 327,702 299,184 1,049.11 22 2,100.00 0.0891
2024-01-30 2023-12-31 13F WESTERN DIGITAL COM 958102105 28,518 -5,784 -16.86 1 0.00 0.0062
2023-10-26 2023-09-30 13F/A-1 WESTERN DIGITAL COM 958102105 34,302 34,302 2 0.0070
2023-10-26 2023-09-30 13F WESTERN DIGITAL COM 958102105 34,302 34,302 2 0.0070
2023-08-02 2023-03-31 13F/A-2 WESTERN DIGITAL COM 958102105 0 -32,952 -100.00 0 -100.00
2023-08-02 2023-03-31 13F/A-1 WESTERN DIGITAL COM 958102105 0 0
2023-04-27 2023-03-31 13F WESTERN DIGITAL COM 958102105 0 -32,952 0
2023-01-26 2022-12-31 13F WESTERN DIGITAL COM 958102105 32,952 2,392 7.83 1 -99.90 0.0047
2022-10-27 2022-09-30 13F WESTERN DIGITAL COM 958102105 30,560 -797,266 -96.31 994 -97.32 0.0047
2022-07-25 2022-06-30 13F WESTERN DIGITAL COM 958102105 827,826 -205,515 -19.89 37,111 -27.67 0.1671
2022-04-21 2022-03-31 13F WESTERN DIGITAL COM 958102105 1,033,341 -159,494 -13.37 51,305 -34.04 0.1877
2022-01-24 2021-12-31 13F WESTERN DIGITAL COM 958102105 1,192,835 224,677 23.21 77,784 42.35 0.2700
2021-10-22 2021-09-30 13F WESTERN DIGITAL COM 958102105 968,158 146,291 17.80 54,642 -6.58 0.2056
2021-07-26 2021-06-30 13F WESTERN DIGITAL COM 958102105 821,867 -21,688 -2.57 58,492 3.88 0.2104
2021-04-23 2021-03-31 13F WESTERN DIGITAL COM 958102105 843,555 283,405 50.59 56,307 81.48 0.2120
2021-01-25 2020-12-31 13F WESTERN DIGITAL COM 958102105 560,150 -8,655 -1.52 31,026 49.24 0.1197
2020-12-14 2020-09-30 13F WESTERN DIGITAL COM 958102105 568,805 176,900 45.14 20,789 20.15 0.0871
2020-07-23 2020-06-30 13F WESTERN DIGITAL COM 958102105 391,905 -153,720 -28.17 17,302 -23.81 0.0756
2020-04-23 2020-03-31 13F WESTERN DIGITAL COM 958102105 545,625 200,336 58.02 22,708 3.62 0.1195
2020-01-24 2019-12-31 13F WESTERN DIGITAL COM 958102105 345,289 -227,838 -39.75 21,915 -35.89 0.0918
2019-10-21 2019-09-30 13F/A-1 WESTERN DIGITAL COM 958102105 573,127 6,575 1.16 34,181 26.88 0.1499
2019-10-21 2019-09-30 13F WESTERN DIGITAL COM 958102105 573,127 227,838 34,181 151,287.0018
2019-07-25 2019-06-30 13F WESTERN DIGITAL COM 958102105 566,552 24,945 4.61 26,939 3.50 0.1198
2019-04-19 2019-03-31 13F WESTERN DIGITAL COM 958102105 541,607 0 0.00 26,029 30.00 0.1180
2019-01-23 2018-12-31 13F WESTERN DIGITAL COM 958102105 541,607 20,000 3.83 20,023 -34.42 0.1017
2018-10-19 2018-09-30 13F WESTERN DIGITAL COM 958102105 521,607 71,063 15.77 30,534 -12.45 0.1339
2018-08-06 2018-06-30 13F WESTERN DIGITAL COM 958102105 450,544 63,724 16.47 34,876 -2.28 0.1501
2018-04-20 2018-03-31 13F WESTERN DIGITAL COM 958102105 386,820 180,531 87.51 35,691 117.55 0.1578
2018-01-23 2017-12-31 13F WESTERN DIGITAL COM 958102105 206,289 -552 -0.27 16,406 -8.20 0.0701
2017-10-23 2017-09-30 13F WESTERN DIGITAL COM 958102105 206,841 20,733 11.14 17,871 8.38 0.0767
2017-07-26 2017-06-30 13F WESTERN DIGITAL COM 958102105 186,108 176,206 1,779.50 16,489 1,918.24 0.0735
2017-04-26 2017-03-31 13F WESTERN DIGITAL COM 958102105 9,902 103 1.05 817 22.86 0.0035
2017-01-24 2016-12-31 13F WESTERN DIGITAL COM 958102105 9,799 254 2.66 665 19.18 0.0029
2016-10-27 2016-09-30 13F WESTERN DIGITAL COM 958102105 9,545 -2,605 -21.44 558 -2.79 0.0025
2016-07-26 2016-06-30 13F WESTERN DIGITAL COM 958102105 12,150 3,204 35.81 574 36.02 0.0026
2016-04-25 2016-03-31 13F/A-1 WESTERN DIGITAL COM 958102105 8,946 166 1.89 422 -19.92 0.0019
2016-01-28 2015-12-31 13F WESTERN DIGITAL COM 958102105 8,780 178 2.07 527 -22.84 0.0024
2015-10-21 2015-09-30 13F WESTERN DIGITAL COM 958102105 8,602 135 1.59 683 3.02 0.0032
2015-08-04 2015-06-30 13F WESTERN DIGITAL COM 958102105 8,467 3,626 74.90 663 50.68 0.0029
2015-04-27 2015-03-31 13F/A-1 WESTERN DIGITAL COM 958102105 4,841 223 4.83 440 -13.89 0.0019
2015-04-21 2015-03-31 13F WESTERN DIGITAL COM 958102105 4,841 440
2015-01-23 2014-12-31 13F WESTERN DIGITAL COM 958102105 4,618 0 0.00 511 13.81 0.0022
2014-10-29 2014-09-30 13F/A-1 WESTERN DIGITAL COM 958102105 4,618 0 0.00 449 5.40 0.0020
2014-10-20 2014-09-30 13F WESTERN DIGITAL COM 958102105 4,618 449
2014-07-24 2014-06-30 13F WESTERN DIGITAL COM 958102105 4,618 0 0.00 426 0.47 0.0019
2014-04-28 2014-03-31 13F WESTERN DIGITAL COM 958102105 4,618 0 0.00 424 9.56 0.0019
2014-01-30 2013-12-31 13F WESTERN DIGITAL COM 958102105 4,618 -10,282 -69.01 387 -59.05 0.0017
2013-10-24 2013-09-30 13F WESTERN DIGITAL COM 958102105 14,900 -87,792 -85.49 945 -85.18 0.0042
2013-08-12 2013-06-30 13F WESTERN DIGITAL COM 958102105 102,692 102,692 6,376 0.0274
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.