Western Digital Corporation
MX ˙ BMV ˙ US9581021055
SecurityMX:WDC / Western Digital Corporation
InstitutionCommerce Bank
Latest Disclosed Ownership16,833 shares
Latest Disclosed Value $ 4,553,158
Commerce Bank reports 4.58% increase in ownership of WDC / Western Digital Corporation

On May 11, 2026 - Commerce Bank filed a 13F-HR form disclosing ownership of 16,833 shares of Western Digital Corporation (MX:WDC) valued at $4,553,158 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 16,096 shares of Western Digital Corporation. This represents a change in shares of 4.58% 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)
2026-05-11 2026-03-31 13F WESTERN DIGITAL COM 958102105 16,833 737 4.58 4,553 64.25 0.0094
2026-02-13 2025-12-31 13F WESTERN DIGITAL COM 958102105 16,096 207 1.30 2,773 45.36 0.0153
2025-11-12 2025-09-30 13F WESTERN DIGITAL COM 958102105 15,889 430 2.78 1,908 92.82 0.0106
2025-08-07 2025-06-30 13F WESTERN DIGITAL COM 958102105 15,459 -337 -2.13 989 55.02 0.0058
2025-05-08 2025-03-31 13F WESTERN DIGITAL COM 958102105 15,796 0 0.00 639 -32.20 0.0041
2025-02-13 2024-12-31 13F WESTERN DIGITAL COM 958102105 15,796 0 0.00 942 -12.71 0.0058
2024-11-08 2024-09-30 13F WESTERN DIGITAL COM 958102105 15,796 -197 -1.23 1,079 -10.98 0.0066
2024-08-12 2024-06-30 13F WESTERN DIGITAL COM 958102105 15,993 -131 -0.81 1,212 10.09 0.0078
2024-05-03 2024-03-31 13F WESTERN DIGITAL COM 958102105 16,124 0 0.00 1,100 30.33 0.0073
2024-02-09 2023-12-31 13F WESTERN DIGITAL COM 958102105 16,124 0 0.00 844 14.83 0.0060
2023-11-14 2023-09-30 13F WESTERN DIGITAL COM 958102105 16,124 -475 -2.86 736 16.85 0.0058
2023-08-08 2023-06-30 13F WESTERN DIGITAL COM 958102105 16,599 -549 -3.20 630 -2.48 0.0047
2023-05-04 2023-03-31 13F WESTERN DIGITAL COM 958102105 17,148 -951 -5.25 646 12.96 0.0051
2023-02-10 2022-12-31 13F WESTERN DIGITAL COM 958102105 18,099 5,275 41.13 571 36.93 0.0046
2022-11-04 2022-09-30 13F WESTERN DIGITAL COM 958102105 12,824 -428 -3.23 417 -29.80 0.0036
2022-08-12 2022-06-30 13F WESTERN DIGITAL COM 958102105 13,252 -2,381 -15.23 594 -23.45 0.0048
2022-05-09 2022-03-31 13F WESTERN DIGITAL COM 958102105 15,633 -139 -0.88 776 -24.59 0.0053
2022-02-14 2021-12-31 13F WESTERN DIGITAL COM 958102105 15,772 321 2.08 1,029 18.00 0.0067
2021-11-09 2021-09-30 13F WESTERN DIGITAL COM 958102105 15,451 717 4.87 872 -16.87 0.0062
2021-08-09 2021-06-30 13F WESTERN DIGITAL COM 958102105 14,734 464 3.25 1,049 10.07 0.0074
2021-05-05 2021-03-31 13F WESTERN DIGITAL COM 958102105 14,270 2,648 22.78 953 47.98 0.0072
2021-02-09 2020-12-31 13F WESTERN DIGITAL COM 958102105 11,622 -2,799 -19.41 644 22.20 0.0052
2020-11-06 2020-09-30 13F WESTERN DIGITAL COM 958102105 14,421 6,820 89.73 527 57.31 0.0048
2020-08-07 2020-06-30 13F WESTERN DIGITAL COM 958102105 7,601 -3,697 -32.72 335 -28.72 0.0033
2020-05-08 2020-03-31 13F WESTERN DIGITAL COM 958102105 11,298 3,623 47.21 470 -3.49 0.0057
2020-02-14 2019-12-31 13F WESTERN DIGITAL COM 958102105 7,675 353 4.82 487 11.44 0.0046
2019-11-12 2019-09-30 13F WESTERN DIGITAL COM 958102105 7,322 945 14.82 437 43.75 0.0045
2019-08-07 2019-06-30 13F WESTERN DIGITAL COM 958102105 6,377 742 13.17 304 12.59 0.0034
2019-05-08 2019-03-31 13F WESTERN DIGITAL COM 958102105 5,635 -1,869 -24.91 270 -2.53 0.0032
2019-02-11 2018-12-31 13F WESTERN DIGITAL COM 958102105 7,504 -92 -1.21 277 -37.75 0.0035
2018-11-02 2018-09-30 13F WESTERN DIGITAL COM 958102105 7,596 370 5.12 445 -20.39 0.0053
2018-08-08 2018-06-30 13F WESTERN DIGITAL COM 958102105 7,226 1,213 20.17 559 0.72 0.0071
2018-05-03 2018-03-31 13F WESTERN DIGITAL COM 958102105 6,013 -796 -11.69 555 2.40 0.0073
2018-02-12 2017-12-31 13F WESTERN DIGITAL COM 958102105 6,809 -269 -3.80 542 -11.44 0.0071
2017-11-07 2017-09-30 13F/A-1 WESTERN DIGITAL COM 958102105 7,078 0 0.00 612 -2.39 0.0083
2017-11-07 2017-09-30 13F WESTERN DIGITAL COM 958102105 7,078 627
2017-08-08 2017-06-30 13F WESTERN DIGITAL COM 958102105 7,078 1,644 30.25 627 39.96 0.0088
2017-05-05 2017-03-31 13F WESTERN DIGITAL COM 958102105 5,434 1,401 34.74 448 63.50 0.0064
2017-02-08 2016-12-31 13F WESTERN DIGITAL COM 958102105 4,033 364 9.92 274 27.44 0.0041
2016-11-03 2016-09-30 13F WESTERN DIGITAL COM 958102105 3,669 3,669 0.00 215 0.0033
2016-02-12 2015-12-31 13F WESTERN DIGITAL COM 958102105 0 -2,765 -100.00 0 -100.00
2015-11-10 2015-09-30 13F WESTERN DIGITAL COM 958102105 2,765 2,765 0.00 220 0.0038
2015-08-03 2015-06-30 13F WESTERN DIGITAL COM 958102105 0 -2,610 -100.00 0 -100.00
2015-05-06 2015-03-31 13F WESTERN DIGITAL COM 958102105 2,610 -482 -15.59 237 -30.70 0.0037
2015-02-11 2014-12-31 13F WESTERN DIGITAL COM 958102105 3,092 248 8.72 342 23.47 0.0054
2014-11-06 2014-09-30 13F WESTERN DIGITAL COM 958102105 2,844 608 27.19 277 34.47 0.0046
2014-08-05 2014-06-30 13F WESTERN DIGITAL COM 958102105 2,236 2,236 206 0.0034
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.