Western Digital Corporation
MX ˙ BMV ˙ US9581021055
SecurityMX:WDC / Western Digital Corporation
InstitutionMcIlrath & Eck, LLC
Latest Disclosed Ownership70 shares
Latest Disclosed Value $ 18,934
McIlrath & Eck, LLC ownership in WDC / Western Digital Corporation

On May 19, 2026 - McIlrath & Eck, LLC filed a 13F-HR form disclosing ownership of 70 shares of Western Digital Corporation (MX:WDC) valued at $18,934 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 70 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-19 2026-03-31 13F WESTERN DIGITAL CORP COM COMMON STOCK 958102105 70 0 0.00 19 50.00 0.0014
2026-02-03 2025-12-31 13F WESTERN DIGITAL COM 958102105 70 0 0.00 12 50.00 0.0011
2025-10-22 2025-09-30 13F WESTERN DIGITAL OM 958102105 70 0 0.00 8 100.00 0.0009
2025-08-14 2025-06-30 13F WESTERN DIGITAL COM 958102105 70 -150 -68.18 4 -50.00 0.0005
2025-05-16 2025-03-31 13F WESTERN DIGITAL COM 958102105 220 0 0.00 9 -38.46 0.0011
2025-02-18 2024-12-31 13F WESTERN DIGITAL COM 958102105 220 0 0.00 13 -13.33 0.0017
2024-11-19 2024-09-30 13F WESTERN DIGITAL COM 958102105 220 0 0.00 15 -6.25 0.0019
2024-08-14 2024-06-30 13F WESTERN DIGITAL COM 958102105 220 0 0.00 17 6.67 0.0025
2024-05-10 2024-03-31 13F WESTERN DIGITAL COM 958102105 220 150 214.29 15 400.00 0.0024
2024-02-06 2023-12-31 13F WESTERN DIGITAL COM 958102105 70 0 0.00 4 0.00 0.0006
2023-11-16 2023-09-30 13F WESTERN DIGITAL COM 958102105 70 -61 -46.56 3 -25.00 0.0006
2023-08-07 2023-06-30 13F WESTERN DIGITAL COM 958102105 131 0 0.00 5 0.00 0.0010
2023-05-09 2023-03-31 13F WESTERN DIGITAL COM 958102105 131 0 0.00 5 0.00 0.0012
2023-02-15 2022-12-31 13F WESTERN DIGITAL COM 958102105 131 0 0.00 4 0.00 0.0011
2022-10-18 2022-09-30 13F WESTERN DIGITAL COM 958102105 131 0 0.00 4 -33.33 0.0011
2022-07-29 2022-06-30 13F WESTERN DIGITAL COM 958102105 131 -150 -53.38 6 -57.14 0.0019
2022-05-11 2022-03-31 13F WESTERN DIGITAL COM 958102105 281 0 0.00 14 -22.22 0.0041
2022-02-08 2021-12-31 13F WESTERN DIGITAL COM 958102105 281 150 114.50 18 157.14 0.0049
2021-11-12 2021-09-30 13F WESTERN DIGITAL COM 958102105 131 -150 -53.38 7 -65.00 0.0021
2021-08-09 2021-06-30 13F WESTERN DIGITAL COM 958102105 281 150 114.50 20 122.22 0.0061
2021-05-12 2021-03-31 13F WESTERN DIGITAL COM 958102105 131 -150 -53.38 9 -43.75 0.0031
2021-02-05 2020-12-31 13F WESTERN DIGITAL COM 958102105 281 0 0.00 16 60.00 0.0059
2020-11-13 2020-09-30 13F WESTERN DIGITAL COM 958102105 281 0 0.00 10 -16.67 0.0043
2020-08-04 2020-06-30 13F WESTERN DIGITAL COM 958102105 281 70 33.18 12 33.33 0.0056
2020-05-14 2020-03-31 13F WESTERN DIGITAL COM 958102105 211 -69 -24.64 9 -50.00 0.0050
2020-02-11 2019-12-31 13F WESTERN DIGITAL COM 958102105 280 0 0.00 18 5.88 0.0086
2019-11-05 2019-09-30 13F WESTERN DIGITAL COM 958102105 280 152 118.75 17 183.33 0.0090
2019-08-08 2019-06-30 13F WESTERN DIGITAL COM 958102105 128 0 0.00 6 0.00 0.0033
2019-05-07 2019-03-31 13F WESTERN DIGITAL COM 958102105 128 70 120.69 6 200.00 0.0033
2019-05-07 2018-12-31 13F WESTERN DIGITAL COM 958102105 58 -90 -60.81 2 -77.78 0.0013
2018-11-13 2018-09-30 13F WESTERN DIGITAL COM 958102105 148 113 322.86 9 200.00 0.0052
2018-08-06 2018-06-30 13F WESTERN DIGITAL COM 958102105 35 0 0.00 3 0.00 0.0018
2018-05-21 2018-03-31 13F WESTERN DIGITAL COM 958102105 35 -74 -67.89 3 -66.67 0.0018
2018-03-16 2017-12-31 13F WESTERN DIGITAL CORP COM Common 958102105 109 109 9 0.0053
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.