Western Digital Corporation
MX ˙ BMV ˙ US9581021055
SecurityMX:WDC / Western Digital Corporation
InstitutionBLB&B Advisors, LLC
Latest Disclosed Ownership6,189 shares
Latest Disclosed Value $ 1,674,071
BLB&B Advisors, LLC reports 14.15% decrease in ownership of WDC / Western Digital Corporation

On April 28, 2026 - BLB&B Advisors, LLC filed a 13F-HR form disclosing ownership of 6,189 shares of Western Digital Corporation (MX:WDC) valued at $1,674,071 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 7,209 shares of Western Digital Corporation. This represents a change in shares of -14.15% 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)
2026-04-28 2026-03-31 13F WESTERN DIGITAL COM 958102105 6,189 -1,020 -14.15 1,674 34.89 0.0586
2026-01-26 2025-12-31 13F WESTERN DIGITAL COM 958102105 7,209 -983 -12.00 1,242 26.25 0.0519
2025-10-31 2025-09-30 13F WESTERN DIGITAL COM 958102105 8,192 -3,236 -28.32 984 34.47 0.0425
2025-08-04 2025-06-30 13F WESTERN DIGITAL COM 958102105 11,428 -262 -2.24 731 54.87 0.0342
2025-04-28 2025-03-31 13F WESTERN DIGITAL COM 958102105 11,690 125 1.08 473 -31.49 0.0241
2025-01-28 2024-12-31 13F WESTERN DIGITAL COM 958102105 11,565 -460 -3.83 690 -16.08 0.0352
2024-10-22 2024-09-30 13F WESTERN DIGITAL COM 958102105 12,025 -300 -2.43 821 -12.00 0.0420
2024-07-26 2024-06-30 13F WESTERN DIGITAL COM 958102105 12,325 -562 -4.36 934 6.14 0.0512
2024-04-26 2024-03-31 13F WESTERN DIGITAL COM 958102105 12,887 -1,140 -8.13 879 19.75 0.0496
2024-01-19 2023-12-31 13F WESTERN DIGITAL COM 958102105 14,027 -363 -2.52 735 11.89 0.0463
2023-10-25 2023-09-30 13F WESTERN DIGITAL COM 958102105 14,390 -2,385 -14.22 657 3.14 0.0469
2023-07-20 2023-06-30 13F WESTERN DIGITAL COM 958102105 16,775 -411 -2.39 636 -1.70 0.0445
2023-04-24 2023-03-31 13F WESTERN DIGITAL COM 958102105 17,186 -2,564 -12.98 647 3.85 0.0482
2023-01-18 2022-12-31 13F WESTERN DIGITAL COM 958102105 19,750 -575 -2.83 623 -5.89 0.0483
2022-10-14 2022-09-30 13F WESTERN DIGITAL COM 958102105 20,325 -843 -3.98 662 -30.24 0.0551
2022-07-18 2022-06-30 13F WESTERN DIGITAL COM 958102105 21,168 -100 -0.47 949 -10.13 0.0751
2022-04-20 2022-03-31 13F WESTERN DIGITAL COM 958102105 21,268 -275 -1.28 1,056 -24.84 0.0710
2022-01-21 2021-12-31 13F WESTERN DIGITAL COM 958102105 21,543 -1,350 -5.90 1,405 8.75 0.0913
2021-10-19 2021-09-30 13F WESTERN DIGITAL COM 958102105 22,893 -1,482 -6.08 1,292 -25.53 0.0863
2021-07-20 2021-06-30 13F WESTERN DIGITAL COM 958102105 24,375 -715 -2.85 1,735 3.58 0.1255
2021-04-19 2021-03-31 13F WESTERN DIGITAL COM 958102105 25,090 -6,305 -20.08 1,675 -3.68 0.1317
2021-01-19 2020-12-31 13F WESTERN DIGITAL COM 958102105 31,395 -5,485 -14.87 1,739 29.01 0.1409
2020-10-20 2020-09-30 13F WESTERN DIGITAL COM 958102105 36,880 -1,580 -4.11 1,348 -20.61 0.1355
2020-07-16 2020-06-30 13F WESTERN DIGITAL COM 958102105 38,460 -630 -1.61 1,698 4.36 0.1840
2020-04-21 2020-03-31 13F WESTERN DIGITAL COM 958102105 39,090 -650 -1.64 1,627 -35.49 0.2125
2020-01-21 2019-12-31 13F WESTERN DIGITAL COM 958102105 39,740 -1,306 -3.18 2,522 3.02 0.2622
2019-10-22 2019-09-30 13F WESTERN DIGITAL COM 958102105 41,046 -75 -0.18 2,448 25.22 0.2759
2019-07-29 2019-06-30 13F WESTERN DIGITAL COM 958102105 41,121 1,743 4.43 1,955 3.33 0.2245
2019-04-19 2019-03-31 13F WESTERN DIGITAL COM 958102105 39,378 -1,918 -4.64 1,892 23.90 0.2225
2019-01-17 2018-12-31 13F WESTERN DIGITAL COM 958102105 41,296 -670 -1.60 1,527 -37.85 0.2096
2018-10-12 2018-09-30 13F WESTERN DIGITAL COM 958102105 41,966 0 0.00 2,457 -24.38 0.3057
2018-07-11 2018-06-30 13F WESTERN DIGITAL COM 958102105 41,966 -7,602 -15.34 3,249 -28.97 0.4411
2018-04-09 2018-03-31 13F WESTERN DIGITAL COM 958102105 49,568 -644 -1.28 4,574 14.55 0.6112
2018-01-16 2017-12-31 13F WESTERN DIGITAL COM 958102105 50,212 -1,150 -2.24 3,993 -10.03 0.5707
2017-10-16 2017-09-30 13F WESTERN DIGITAL COM 958102105 51,362 -1,924 -3.61 4,438 -5.99 0.6836
2017-08-04 2017-06-30 13F/A-1 WESTERN DIGITAL COM 958102105 53,286 683 1.30 4,721 8.75 0.7832
2017-07-20 2017-06-30 13F WESTERN DIGITAL COM 958102105 52,603 0 4,341
2017-04-14 2017-03-31 13F WESTERN DIGITAL COM 958102105 52,603 -748 -1.40 4,341 19.75 0.7373
2017-02-03 2016-12-31 13F WESTERN DIGITAL COM 958102105 53,351 -450 -0.84 3,625 15.23 0.6315
2016-10-17 2016-09-30 13F WESTERN DIGITAL COM 958102105 53,801 2,486 4.84 3,146 29.73 0.5725
2016-07-19 2016-06-30 13F WESTERN DIGITAL COM 958102105 51,315 -532 -1.03 2,425 -0.98 0.4575
2016-04-18 2016-03-31 13F WESTERN DIGITAL COM 958102105 51,847 -29 -0.06 2,449 -21.38 0.4927
2016-01-15 2015-12-31 13F WESTERN DIGITAL COM 958102105 51,876 -365 -0.70 3,115 -24.94 0.6585
2015-10-20 2015-09-30 13F WESTERN DIGITAL COM 958102105 52,241 -532 -1.01 4,150 0.29 0.9195
2015-07-16 2015-06-30 13F WESTERN DIGITAL COM 958102105 52,773 -1,675 -3.08 4,138 -16.49 0.8597
2015-04-17 2015-03-31 13F WESTERN DIGITAL COM 958102105 54,448 -1,574 -2.81 4,955 -20.11 1.0322
2015-01-22 2014-12-31 13F WESTERN DIGITAL COM 958102105 56,022 -3,278 -5.53 6,202 7.47 1.3113
2014-10-21 2014-09-30 13F WESTERN DIGITAL COM 958102105 59,300 -7,584 -11.34 5,771 -6.51 1.2481
2014-07-17 2014-06-30 13F WESTERN DIGITAL COM 958102105 66,884 -5,175 -7.18 6,173 -6.70 1.3190
2014-04-11 2014-03-31 13F WESTERN DIGITAL COM 958102105 72,059 -1,548 -2.10 6,616 7.12 1.4575
2014-01-17 2013-12-31 13F WESTERN DIGITAL COM 958102105 73,607 -4,050 -5.22 6,176 25.45 1.4785
2013-10-16 2013-09-30 13F WESTERN DIGITAL COM 958102105 77,657 -4,075 -4.99 4,923 -3.00 1.2971
2013-07-11 2013-06-30 13F WESTERN DIGITAL COM 958102105 81,732 81,732 5,075 1.4117
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.