Western Digital Corporation
MX ˙ BMV ˙ US9581021055
SecurityMX:WDC / Western Digital Corporation
InstitutionJacobs Levy Equity Management, Inc
Latest Disclosed Ownership8,672 shares
Latest Disclosed Value $ 2,345,689
Jacobs Levy Equity Management, Inc ownership in WDC / Western Digital Corporation

On May 15, 2026 - Jacobs Levy Equity Management, Inc filed a 13F-HR form disclosing ownership of 8,672 shares of Western Digital Corporation (MX:WDC) valued at $2,345,689 USD as of March 31, 2026. The entity filed a previous 13F-HR on May 15, 2024 disclosing 0 shares of Western Digital Corporation.

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)
2026-05-15 2026-03-31 13F WESTERN DIGITAL COM 958102105 8,672 8,672 2,346 0.0099
2024-05-15 2024-03-31 13F WESTERN DIGITAL COM 958102105 0 -14,483 -100.00 0 -100.00
2024-02-14 2023-12-31 13F WESTERN DIGITAL COM 958102105 14,483 14,483 758 0.0038
2023-11-16 2023-09-30 13F WESTERN DIGITAL COM 958102105 0 -75,792 -100.00 0 -100.00
2023-08-14 2023-06-30 13F WESTERN DIGITAL COM 958102105 75,792 -1,809,890 -95.98 2,875 -95.95 0.0166
2023-05-15 2023-03-31 13F WESTERN DIGITAL COM 958102105 1,885,682 77,312 4.28 71,034 24.50 0.4354
2023-02-14 2022-12-31 13F WESTERN DIGITAL COM 958102105 1,808,370 185,451 11.43 57,054 8.00 0.3860
2022-11-15 2022-09-30 13F WESTERN DIGITAL COM 958102105 1,622,919 20,550 1.28 52,826 -26.46 0.4176
2022-08-15 2022-06-30 13F WESTERN DIGITAL COM 958102105 1,602,369 -40,475 -2.46 71,834 -11.93 0.5561
2022-05-16 2022-03-31 13F WESTERN DIGITAL COM 958102105 1,642,844 233,397 16.56 81,567 -11.25 0.5487
2022-02-14 2021-12-31 13F WESTERN DIGITAL COM 958102105 1,409,447 -214,813 -13.23 91,910 0.26 0.6154
2021-11-15 2021-09-30 13F WESTERN DIGITAL COM 958102105 1,624,260 32,968 2.07 91,673 -19.05 0.6173
2021-08-16 2021-06-30 13F WESTERN DIGITAL COM 958102105 1,591,292 142,572 9.84 113,252 17.11 0.7677
2021-05-17 2021-03-31 13F WESTERN DIGITAL COM 958102105 1,448,720 -8,588 -0.59 96,702 19.80 0.7459
2021-02-16 2020-12-31 13F WESTERN DIGITAL COM 958102105 1,457,308 11,249 0.78 80,720 52.73 0.7078
2020-11-16 2020-09-30 13F WESTERN DIGITAL COM 958102105 1,446,059 349,924 31.92 52,853 9.21 0.5478
2020-08-17 2020-06-30 13F WESTERN DIGITAL COM 958102105 1,096,135 69,537 6.77 48,394 13.26 0.5241
2020-05-15 2020-03-31 13F WESTERN DIGITAL COM 958102105 1,026,598 28,766 2.88 42,727 -32.53 0.5490
2020-02-14 2019-12-31 13F WESTERN DIGITAL COM 958102105 997,832 550,152 122.89 63,332 137.20 0.6214
2019-11-14 2019-09-30 13F WESTERN DIGITAL COM 958102105 447,680 41,532 10.23 26,700 38.26 0.3277
2019-08-13 2019-06-30 13F WESTERN DIGITAL COM 958102105 406,148 51,610 14.56 19,312 13.34 0.2672
2019-05-14 2019-03-31 13F WESTERN DIGITAL COM 958102105 354,538 -60,260 -14.53 17,039 11.11 0.2459
2019-02-14 2018-12-31 13F WESTERN DIGITAL COM 958102105 414,798 -50,454 -10.84 15,335 -43.70 0.2695
2018-11-14 2018-09-30 13F WESTERN DIGITAL COM 958102105 465,252 93,120 25.02 27,236 -5.45 0.3863
2018-08-14 2018-06-30 13F WESTERN DIGITAL COM 958102105 372,132 21,479 6.13 28,807 -10.97 0.4528
2018-05-15 2018-03-31 13F WESTERN DIGITAL COM 958102105 350,653 15,400 4.59 32,355 21.35 0.5385
2018-02-13 2017-12-31 13F WESTERN DIGITAL COM 958102105 335,253 44,340 15.24 26,663 6.08 0.4686
2017-11-14 2017-09-30 13F WESTERN DIGITAL COM 958102105 290,913 145,408 99.93 25,135 94.97 0.4886
2017-11-09 2017-06-30 13F/A-1 WESTERN DIGITAL COM 958102105 145,505 -176,513 -54.81 12,892 -51.49 0.2756
2017-08-14 2017-06-30 13F WESTERN DIGITAL COM 958102105 145,505 -176,513 12,892
2017-05-12 2017-03-31 13F WESTERN DIGITAL COM 958102105 322,018 -243,562 -43.06 26,576 -30.85 0.5372
2017-02-14 2016-12-31 13F WESTERN DIGITAL COM 958102105 565,580 -75,810 -11.82 38,431 2.48 0.7421
2016-11-14 2016-09-30 13F WESTERN DIGITAL COM 958102105 641,390 118,430 22.65 37,502 51.74 0.6699
2016-08-15 2016-06-30 13F WESTERN DIGITAL COM 958102105 522,960 53,570 11.41 24,715 11.46 0.5118
2016-05-16 2016-03-31 13F WESTERN DIGITAL COM 958102105 469,390 164,470 53.94 22,174 21.10 0.4697
2016-02-16 2015-12-31 13F WESTERN DIGITAL COM 958102105 304,920 28,870 10.46 18,310 -16.50 0.3637
2015-11-16 2015-09-30 13F WESTERN DIGITAL COM 958102105 276,050 57,770 26.47 21,929 28.10 0.4498
2015-08-14 2015-06-30 13F WESTERN DIGITAL COM 958102105 218,280 -36,665 -14.38 17,118 -26.23 0.3256
2015-05-15 2015-03-31 13F WESTERN DIGITAL COM 958102105 254,945 11,713 4.82 23,203 -13.83 0.3949
2015-02-17 2014-12-31 13F WESTERN DIGITAL COM 958102105 243,232 -61,243 -20.11 26,926 -9.13 0.4613
2014-11-14 2014-09-30 13F WESTERN DIGITAL COM 958102105 304,475 -6,560 -2.11 29,632 3.22 0.4950
2014-08-14 2014-06-30 13F WESTERN DIGITAL COM 958102105 311,035 -450 -0.14 28,709 0.38 0.4752
2014-05-15 2014-03-31 13F WESTERN DIGITAL COM 958102105 311,485 10,780 3.58 28,601 13.37 0.4791
2014-02-14 2013-12-31 13F WESTERN DIGITAL COM 958102105 300,705 -20,640 -6.42 25,229 23.84 0.3790
2013-11-14 2013-09-30 13F WESTERN DIGITAL COM 958102105 321,345 -160,210 -33.27 20,373 -31.86 0.3451
2013-08-14 2013-06-30 13F WESTERN DIGITAL COM 958102105 481,555 481,555 29,900 0.5281
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.