Western Digital Corporation
US ˙ NasdaqGS ˙ US9581021055

SecurityWDC / Western Digital Corporation
InstitutionPitcairn Co
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Pitcairn Co closes position in WDC / Western Digital Corporation

On February 12, 2026 - Pitcairn Co filed a 13F-HR form disclosing ownership of 0 shares of Western Digital Corporation (US:WDC) valued at $0 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 12, 2025 disclosing 11,604 shares of Western Digital Corporation. The current value of the position is $0 USD.

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)
2026-02-12 2025-12-31 13F WESTERN DIGITAL COM 958102105 0 -100.00 0
2025-11-12 2025-09-30 13F WESTERN DIGITAL COM 958102105 11,604 11,604 1,393 0.1100
2024-11-12 2024-09-30 13F WESTERN DIGITAL COM 958102105 0 -2,791 -100.00 0 -100.00
2024-08-13 2024-06-30 13F WESTERN DIGITAL COM 958102105 2,791 2,791 211 0.0129
2023-02-13 2022-12-31 13F WESTERN DIGITAL COM 958102105 0 -6,245 -100.00 0 -100.00
2022-11-14 2022-09-30 13F WESTERN DIGITAL COM 958102105 6,245 6,245 203 0.0220
2019-02-12 2018-12-31 13F WESTERN DIGITAL COM 958102105 0 -4,762 -100.00 0 -100.00
2018-11-02 2018-09-30 13F WESTERN DIGITAL COM 958102105 4,762 -200 -4.03 279 -27.34 0.0289
2018-08-02 2018-06-30 13F WESTERN DIGITAL COM 958102105 4,962 -302 -5.74 384 -20.82 0.0408
2018-05-11 2018-03-31 13F WESTERN DIGITAL COM 958102105 5,264 599 12.84 485 30.73 0.0515
2018-02-13 2017-12-31 13F WESTERN DIGITAL COM 958102105 4,665 1,724 58.62 371 46.06 0.0370
2017-11-03 2017-09-30 13F WESTERN DIGITAL COM 958102105 2,941 -6,427 -68.61 254 -69.40 0.0288
2017-08-02 2017-06-30 13F WESTERN DIGITAL COM 958102105 9,368 -207 -2.16 830 5.06 0.0997
2017-05-08 2017-03-31 13F WESTERN DIGITAL COM 958102105 9,575 5,560 138.48 790 190.44 0.0957
2017-02-06 2016-12-31 13F WESTERN DIGITAL COM 958102105 4,015 -35 -0.86 272 15.25 0.0336
2016-11-09 2016-09-30 13F WESTERN DIGITAL COM 958102105 4,050 4,050 0.00 236 0.0294
2015-05-14 2015-03-31 13F WESTERN DIGITAL COM 958102105 0 -2,209 -100.00 0 -100.00
2015-02-10 2014-12-31 13F WESTERN DIGITAL COM 958102105 2,209 -145 -6.16 244 6.55 0.0263
2014-11-12 2014-09-30 13F WESTERN DIGITAL COM 958102105 2,354 -2,311 -49.54 229 -46.87 0.0256
2014-07-29 2014-06-30 13F WESTERN DIGITAL COM 958102105 4,665 -496 -9.61 431 -9.07 0.0477
2014-05-13 2014-03-31 13F WESTERN DIGITAL COM 958102105 5,161 27 0.53 474 9.98 0.0530
2014-05-13 2013-12-31 13F/A-1 WESTERN DIGITAL COM 958102105 5,134 300 6.21 431 40.39 0.0477
2014-02-12 2013-12-31 13F WESTERN DIGITAL COM 958102105 3,014 253
2013-11-05 2013-09-30 13F WESTERN DIGITAL COM 958102105 4,834 4,834 307 0.0376
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.