Western Digital Corporation
CH ˙ BRSE ˙ US9581021055
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityCH:12355 / Western Digital Corporation
InstitutionArkadios Wealth Advisors
Latest Disclosed Ownership31,688 shares
Latest Disclosed Value $ 8,571,254
Arkadios Wealth Advisors reports 17.30% decrease in ownership of 12355 / Western Digital Corporation

On May 18, 2026 - Arkadios Wealth Advisors filed a 13F-HR form disclosing ownership of 31,688 shares of Western Digital Corporation (CH:12355) valued at $8,571,254 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 38,319 shares of Western Digital Corporation. This represents a change in shares of -17.30% 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)
2026-05-18 2026-03-31 13F WESTERN DIGITAL CORP COM Stock 958102105 31,688 -6,631 -17.30 8,571 29.84 0.0903
2026-02-13 2025-12-31 13F WESTERN DIGITAL CORP COM Stock 958102105 38,319 -142 -0.37 6,601 42.97 0.1280
2025-10-29 2025-09-30 13F WESTERN DIGITAL CORP COM Stock 958102105 38,461 11,794 44.23 4,618 170.63 0.1108
2025-08-04 2025-06-30 13F WESTERN DIGITAL CORP COM Stock 958102105 26,667 608 2.33 1,706 62.01 0.0503
2025-05-08 2025-03-31 13F WESTERN DIGITAL CORP COM Stock 958102105 26,059 6,105 30.60 1,054 -11.44 0.0398
2025-01-15 2024-12-31 13F WESTERN DIGITAL CORP COM Stock 958102105 19,954 3,731 23.00 1,190 7.41 0.0649
2024-10-24 2024-09-30 13F WESTERN DIGITAL CORP COM Stock 958102105 16,223 16,223 1,108 0.0627
2022-02-03 2021-12-31 13F WESTERN DIGITAL COM Stock 958102105 0 -432 -100.00 0 0.0000
2021-10-19 2021-09-30 13F WESTERN DIGITAL COM Stock 958102105 432 162 60.00 0 0.0035
2021-07-28 2021-06-30 13F WESTERN DIGITAL COM Stock 958102105 270 200 285.71 0 0.0023
2021-04-26 2021-03-31 13F WESTERN DIGITAL COM Stock 958102105 70 70 0 0.0007
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.