Western Digital Corporation
CH ˙ BRSE ˙ US9581021055
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityCH:12355 / Western Digital Corporation
InstitutionJustInvest LLC
Latest Disclosed Ownership63,184 shares
Latest Disclosed Value $ 17,090,640
JustInvest LLC reports 3.60% increase in ownership of 12355 / Western Digital Corporation

On May 14, 2026 - JustInvest LLC filed a 13F-HR form disclosing ownership of 63,184 shares of Western Digital Corporation (CH:12355) valued at $17,090,640 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 60,987 shares of Western Digital Corporation. This represents a change in shares of 3.60% 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)
2026-05-14 2026-03-31 13F WESTERN DIGITAL COM 958102105 63,184 2,197 3.60 17,091 62.67 0.1677
2026-02-13 2025-12-31 13F WESTERN DIGITAL COM 958102105 60,987 2,228 3.79 10,506 48.94 0.1025
2025-10-31 2025-09-30 13F WESTERN DIGITAL COM 958102105 58,759 5,189 9.69 7,055 105.84 0.0723
2025-07-25 2025-06-30 13F WESTERN DIGITAL COM 958102105 53,570 26,234 95.97 3,428 210.14 0.0387
2025-05-14 2025-03-31 13F WESTERN DIGITAL COM 958102105 27,336 -529 -1.90 1,105 -33.47 0.0163
2025-02-10 2024-12-31 13F WESTERN DIGITAL COM 958102105 27,865 1,622 6.18 1,662 -7.31 0.0251
2024-11-12 2024-09-30 13F WESTERN DIGITAL COM 958102105 26,243 2,532 10.68 1,792 2.17 0.0289
2024-08-12 2024-06-30 13F WESTERN DIGITAL COM 958102105 23,711 3,274 16.02 1,754 25.82 0.0334
2024-05-09 2024-03-31 13F WESTERN DIGITAL COM 958102105 20,437 4,627 29.27 1,395 68.56 0.0299
2024-02-08 2023-12-31 13F WESTERN DIGITAL COM 958102105 15,810 1,757 12.50 828 29.02 0.0215
2023-11-08 2023-09-30 13F WESTERN DIGITAL COM 958102105 14,053 1,476 11.74 641 34.38 0.0192
2023-07-28 2023-06-30 13F WESTERN DIGITAL COM 958102105 12,577 -139 -1.09 477 -0.42 0.0146
2023-05-10 2023-03-31 13F WESTERN DIGITAL COM 958102105 12,716 -1,335 -9.50 479 8.13 0.0166
2023-02-10 2022-12-31 13F WESTERN DIGITAL COM 958102105 14,051 1,847 15.13 443 11.59 0.0183
2022-11-14 2022-09-30 13F WESTERN DIGITAL COM 958102105 12,204 68 0.56 397 -27.02 0.0180
2022-08-12 2022-06-30 13F/A-1 WESTERN DIGITAL COM 958102105 12,136 4,840 66.34 544 50.28 0.0252
2022-08-09 2022-06-30 13F WESTERN DIGITAL COM 958102105 12,136 4,840 544 0.0252
2022-05-16 2022-03-31 13F WESTERN DIGITAL COM 958102105 7,296 238 3.37 362 -21.30 0.0175
2022-02-23 2021-12-31 13F WESTERN DIGITAL COM 958102105 7,058 1,650 30.51 460 50.82 0.0271
2021-11-09 2021-09-30 13F WESTERN DIGITAL COM 958102105 5,408 -1,474 -21.42 305 -37.76 0.0274
2021-08-11 2021-06-30 13F/A-1 WESTERN DIGITAL COM 958102105 6,882 2,679 63.74 490 74.38 0.0513
2021-07-21 2021-06-30 13F WESTERN DIGITAL COM 958102105 4,203 0 281 0.0428
2021-04-28 2021-03-31 13F WESTERN DIGITAL COM 958102105 4,203 4,203 281 0.0425
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.