Western Digital Corporation
MX ˙ BMV ˙ US9581021055
SecurityMX:WDC / Western Digital Corporation
InstitutionWebster Bank, N. A.
Latest Disclosed Ownership1,200 shares
Latest Disclosed Value $ 324,588
Webster Bank, N. A. ownership in WDC / Western Digital Corporation

On April 17, 2026 - Webster Bank, N. A. filed a 13F-HR form disclosing ownership of 1,200 shares of Western Digital Corporation (MX:WDC) valued at $324,588 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 1,200 shares of Western Digital Corporation. This represents a change in shares of 0.00% 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)
2026-04-17 2026-03-31 13F WESTERN DIGITAL COM 958102105 1,200 0 0.00 325 57.28 0.0307
2026-01-23 2025-12-31 13F WESTERN DIGITAL COM 958102105 1,200 0 0.00 207 43.06 0.0194
2025-10-23 2025-09-30 13F WESTERN DIGITAL COM 958102105 1,200 0 0.00 144 89.47 0.0139
2025-07-08 2025-06-30 13F WESTERN DIGITAL COM 958102105 1,200 0 0.00 77 58.33 0.0079
2025-04-04 2025-03-31 13F WESTERN DIGITAL COM 958102105 1,200 0 0.00 49 -32.39 0.0053
2025-01-22 2024-12-31 13F WESTN DIGITAL COM 958102105 1,200 0 0.00 72 -12.35 0.0077
2024-10-10 2024-09-30 13F WESTN DIGITAL COM 958102105 1,200 0 0.00 82 -10.00 0.0087
2024-07-12 2024-06-30 13F WESTN DIGITAL COM 958102105 1,200 0 0.00 91 11.11 0.0100
2024-04-16 2024-03-31 13F WESTN DIGITAL COM 958102105 1,200 0 0.00 82 30.65 0.0091
2024-01-23 2023-12-31 13F WESTN DIGITAL COM 958102105 1,200 0 0.00 63 14.81 0.0077
2023-10-10 2023-09-30 13F WESTN DIGITAL COM 958102105 1,200 0 0.00 55 20.00 0.0074
2023-07-13 2023-06-30 13F WESTN DIGITAL COM 958102105 1,200 -400 -25.00 46 -25.00 0.0059
2023-04-13 2023-03-31 13F WESTN DIGITAL COM 958102105 1,600 400 33.33 60 0.0079
2023-01-18 2022-12-31 13F WESTN DIGITAL COM 958102105 1,200 -300 -20.00 0 -100.00 0.0051
2022-10-24 2022-09-30 13F WESTN DIGITAL COM 958102105 1,500 0 0.00 49 -26.87 0.0071
2022-07-12 2022-06-30 13F WESTN DIGITAL COM 958102105 1,500 -300 -16.67 67 -25.56 0.0091
2022-04-13 2022-03-31 13F WESTN DIGITAL COM 958102105 1,800 300 20.00 90 -8.16 0.0065
2022-01-12 2021-12-31 13F WESTN DIGITAL COM 958102105 1,500 0 0.00 98 15.29 0.0101
2021-10-12 2021-09-30 13F WESTN DIGITAL COM 958102105 1,500 0 0.00 85 -19.81 0.0095
2021-07-20 2021-06-30 13F WESTN DIGITAL COM 958102105 1,500 0 0.00 106 6.00 0.0116
2021-05-07 2021-03-31 13F WESTN DIGITAL COM 958102105 1,500 0 0.00 100 20.48 0.0114
2021-01-07 2020-12-31 13F WESTN DIGITAL COM 958102105 1,500 0 0.00 83 50.91 0.0098
2020-10-22 2020-09-30 13F WESTN DIGITAL COM 958102105 1,500 0 0.00 55 -16.67 0.0072
2020-07-09 2020-06-30 13F WESTN DIGITAL COM 958102105 1,500 0 0.00 66 6.45 0.0094
2020-04-21 2020-03-31 13F WESTN DIGITAL COM 958102105 1,500 0 0.00 62 -34.74 0.0103
2020-01-14 2019-12-31 13F WESTN DIGITAL COM 958102105 1,500 0 0.00 95 5.56 0.0121
2019-10-01 2019-09-30 13F WESTN DIGITAL COM 958102105 1,500 0 0.00 90 26.76 0.0122
2019-07-11 2019-06-30 13F WESTN DIGITAL COM 958102105 1,500 0 0.00 71 -1.39 0.0098
2019-04-10 2019-03-31 13F WESTN DIGITAL COM 958102105 1,500 300 25.00 72 63.64 0.0103
2019-01-09 2018-12-31 13F WESTN DIGITAL COM 958102105 1,200 0 0.00 44 -37.14 0.0071
2018-10-12 2018-09-30 13F WESTN DIGITAL COM 958102105 1,200 0 0.00 70 -24.73 0.0098
2018-07-12 2018-06-30 13F WESTN DIGITAL COM 958102105 1,200 0 0.00 93 -16.22 0.0134
2018-04-19 2018-03-31 13F WESTN DIGITAL COM 958102105 1,200 0 0.00 111 16.84 0.0160
2018-01-23 2017-12-31 13F WESTN DIGITAL COM 958102105 1,200 0 0.00 95 -8.65 0.0131
2017-10-12 2017-09-30 13F Western Digital COM 958102105 1,200 0 0.00 104 -1.89 0.0151
2017-07-12 2017-06-30 13F Western Digital COM 958102105 1,200 0 0.00 106 7.07 0.0157
2017-05-01 2017-03-31 13F Western Digital COM 958102105 1,200 0 0.00 99 20.73 0.0149
2017-02-15 2016-12-31 13F Western Digital COM 958102105 1,200 1,200 82 0.0120
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.