Western Digital Corporation
MX ˙ BMV ˙ US9581021055
SecurityMX:WDC / Western Digital Corporation
InstitutionCommonwealth Equity Services, Llc
Latest Disclosed Ownership85,741 shares
Latest Disclosed Value $ 14,770,638
Commonwealth Equity Services, Llc reports 336.70% increase in ownership of WDC / Western Digital Corporation

On February 12, 2026 - Commonwealth Equity Services, Llc filed a 13F-HR form disclosing ownership of 85,741 shares of Western Digital Corporation (MX:WDC) valued at $14,770,638 USD as of December 31, 2025. The entity filed a previous 13F-HR on October 22, 2025 disclosing 19,634 shares of Western Digital Corporation. This represents a change in shares of 336.70% 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)
2026-02-12 2025-12-31 13F WESTERN DIGITAL COM 958102105 85,741 66,107 336.70 14,771 738,400.00 0.0197
2025-10-22 2025-09-30 13F WESTERN DIGITAL COM 958102105 19,634 8,055 69.57 2 0.0031
2025-08-06 2025-06-30 13F WESTERN DIGITAL COM 958102105 11,579 -74,816 -86.60 1 -100.00 0.0010
2025-05-09 2025-03-31 13F WESTERN DIGITAL COM 958102105 86,395 76,333 758.63 3 0.0049
2025-02-10 2024-12-31 13F WESTERN DIGITAL COM 958102105 10,062 -7,588 -42.99 1 -100.00 0.0009
2024-10-18 2024-09-30 13F WESTERN DIGITAL COM 958102105 17,650 3,808 27.51 1 0.00 0.0018
2024-07-31 2024-06-30 13F WESTERN DIGITAL COM 958102105 13,842 -2,161 -13.50 1 0.00 0.0017
2024-04-29 2024-03-31 13F WESTERN DIGITAL COM 958102105 16,003 993 6.62 1 0.0018
2024-02-06 2023-12-31 13F WESTERN DIGITAL COM 958102105 15,010 2,554 20.50 1 0.0014
2023-10-23 2023-09-30 13F WESTERN DIGITAL COM 958102105 12,456 -1,234 -9.01 1 0.0012
2023-08-10 2023-06-30 13F WESTERN DIGITAL COM 958102105 13,690 -2,413 -14.98 1 0.0011
2023-05-11 2023-03-31 13F WESTERN DIGITAL COM 958102105 16,103 -395 -2.39 1 0.0013
2023-02-07 2022-12-31 13F WESTERN DIGITAL COM 958102105 16,498 -4,844 -22.70 1 -100.00 0.0013
2022-11-14 2022-09-30 13F WESTERN DIGITAL COM 958102105 21,342 -1,196 -5.31 694 -31.29 0.0018
2022-07-19 2022-06-30 13F WESTERN DIGITAL COM 958102105 22,538 -6,000 -21.02 1,010 -28.67 0.0026
2022-05-04 2022-03-31 13F WESTERN DIGITAL COM 958102105 28,538 1,730 6.45 1,416 -18.99 0.0032
2022-01-31 2021-12-31 13F WESTERN DIGITAL COM 958102105 26,808 1,980 7.97 1,748 24.77 0.0039
2021-10-29 2021-09-30 13F WESTERN DIGITAL COM 958102105 24,828 -1,910 -7.14 1,401 -26.34 0.0035
2021-08-11 2021-06-30 13F WESTERN DIGITAL COM 958102105 26,738 373 1.41 1,902 8.13 0.0048
2021-05-04 2021-03-31 13F WESTERN DIGITAL COM 958102105 26,365 1,839 7.50 1,759 29.53 0.0050
2021-02-11 2020-12-31 13F WESTERN DIGITAL COM 958102105 24,526 -1,226 -4.76 1,358 44.31 0.0041
2020-11-05 2020-09-30 13F WESTERN DIGITAL COM 958102105 25,752 -5,092 -16.51 941 -30.86 0.0032
2020-08-12 2020-06-30 13F WESTERN DIGITAL COM 958102105 30,844 7,868 34.24 1,361 42.36 0.0051
2020-05-11 2020-03-31 13F WESTERN DIGITAL COM 958102105 22,976 -833 -3.50 956 -36.73 0.0045
2020-02-05 2019-12-31 13F WESTERN DIGITAL COM 958102105 23,809 3,059 14.74 1,511 22.15 0.0057
2019-10-30 2019-09-30 13F WESTERN DIGITAL COM 958102105 20,750 -6,706 -24.42 1,237 -5.21 0.0053
2019-07-19 2019-06-30 13F WESTERN DIGITAL COM 958102105 27,456 -99 -0.36 1,305 -1.44 0.0057
2019-05-13 2019-03-31 13F WESTERN DIGITAL COM 958102105 27,555 -710 -2.51 1,324 26.82 0.0061
2019-02-11 2018-12-31 13F WESTERN DIGITAL COM 958102105 28,265 -8,001 -22.06 1,044 -50.82 0.0055
2018-11-06 2018-09-30 13F WESTERN DIGITAL COM 958102105 36,266 12,419 52.08 2,123 15.01 0.0102
2018-07-31 2018-06-30 13F WESTERN DIGITAL COM 958102105 23,847 3,065 14.75 1,846 -3.70 0.0097
2018-05-14 2018-03-31 13F WESTERN DIGITAL COM 958102105 20,782 -2,985 -12.56 1,917 1.43 0.0104
2018-02-12 2017-12-31 13F WESTERN DIGITAL COM 958102105 23,767 23,767 1,890 0.0103
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.