Western Digital Corporation
CH ˙ BRSE ˙ US9581021055
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityCH:12355 / Western Digital Corporation
InstitutionVictory Capital Management Inc
Latest Disclosed Ownership497,009 shares
Latest Disclosed Value $ 134,435,964
Victory Capital Management Inc reports 15.40% decrease in ownership of 12355 / Western Digital Corporation

On May 15, 2026 - Victory Capital Management Inc filed a 13F-HR form disclosing ownership of 497,009 shares of Western Digital Corporation (CH:12355) valued at $134,435,964 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 587,498 shares of Western Digital Corporation. This represents a change in shares of -15.40% 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.

Upgrade to unlock premium data and export to Excel .

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 497,009 -90,489 -15.40 134,436 32.83 0.0645
2026-02-13 2025-12-31 13F WESTERN DIGITAL COM 958102105 587,498 10,669 1.85 101,208 46.14 0.0571
2025-11-12 2025-09-30 13F WESTERN DIGITAL COM 958102105 576,829 -123,731 -17.66 69,254 54.49 0.0405
2025-08-13 2025-06-30 13F WESTERN DIGITAL COM 958102105 700,560 574,680 456.53 44,829 780.88 0.0289
2025-05-02 2025-03-31 13F WESTERN DIGITAL COM 958102105 125,880 25,124 24.94 5,089 -15.30 0.0052
2025-02-06 2024-12-31 13F WESTERN DIGITAL COM 958102105 100,756 -61,829 -38.03 6,008 -45.88 0.0059
2024-11-05 2024-09-30 13F WESTERN DIGITAL COM 958102105 162,585 -6,219 -3.68 11,103 -13.20 0.0107
2024-08-05 2024-06-30 13F WESTERN DIGITAL COM 958102105 168,804 -2,548,899 -93.79 12,790 -93.10 0.0128
2024-05-03 2024-03-31 13F WESTERN DIGITAL COM 958102105 2,717,703 -5,639,964 -67.48 185,456 -57.63 0.1811
2024-02-05 2023-12-31 13F WESTERN DIGITAL COM 958102105 8,357,667 70,984 0.86 437,691 15.75 0.4604
2023-11-06 2023-09-30 13F WESTERN DIGITAL COM 958102105 8,286,683 -1,421,322 -14.64 378,121 2.69 0.4346
2023-07-27 2023-06-30 13F WESTERN DIGITAL COM 958102105 9,708,005 280,860 2.98 368,225 3.69 0.4050
2023-05-02 2023-03-31 13F WESTERN DIGITAL COM 958102105 9,427,145 5,314,519 129.22 355,121 173.69 0.3988
2023-04-25 2022-12-31 13F/A-3 WESTERN DIGITAL COM 958102105 4,112,626 3,373,003 456.04 129,753 438.98 0.1493
2023-03-10 2022-12-31 13F/A-2 WESTERN DIGITAL COM 958102105 4,563,226 3,823,603 143,970 0.1572
2023-02-10 2022-12-31 13F/A-1 WESTERN DIGITAL COM 958102105 4,563,226 3,823,603 143,970 0.0993
2023-02-09 2022-12-31 13F WESTERN DIGITAL COM 958102105 4,537,560 3,797,937 150,939 0.1025
2022-11-02 2022-09-30 13F WESTERN DIGITAL COM 958102105 739,623 -7,244 -0.97 24,074 -28.10 0.0281
2022-08-01 2022-06-30 13F WESTERN DIGITAL COM 958102105 746,867 -112 -0.01 33,482 -14.98 0.0381
2022-05-04 2022-03-31 13F WESTERN DIGITAL COM 958102105 746,979 80,783 12.13 39,380 -9.35 0.0394
2022-02-07 2021-12-31 13F WESTERN DIGITAL COM 958102105 666,196 -17,589 -2.57 43,442 12.56 0.0400
2021-11-02 2021-09-30 13F WESTERN DIGITAL COM 958102105 683,785 -65,154 -8.70 38,593 -27.60 0.0378
2021-08-03 2021-06-30 13F WESTERN DIGITAL COM 958102105 748,939 -36,682 -4.67 53,302 1.64 0.0512
2021-05-04 2021-03-31 13F WESTERN DIGITAL COM 958102105 785,621 130,015 19.83 52,440 44.41 0.0537
2021-02-01 2020-12-31 13F WESTERN DIGITAL COM 958102105 655,606 -24,620 -3.62 36,314 46.06 0.0405
2020-11-09 2020-09-30 13F Western Digital COM 958102105 680,226 -52,821 -7.21 24,862 -23.18 0.0319
2020-08-07 2020-06-30 13F WESTERN DIGITAL COM 958102105 733,047 420,629 134.64 32,364 148.90 0.0438
2020-05-12 2020-03-31 13F/A-1 WESTERN DIGITAL COM 958102105 312,418 58,561 23.07 13,003 -19.30 0.0218
2020-05-04 2020-03-31 13F WESTERN DIGITAL COM 958102105 312,418 58,561 13,003 14,230.4622
2020-02-06 2019-12-31 13F/A-1 WESTERN DIGITAL COM 958102105 253,857 -61,729 -19.56 16,112 -14.40 0.0196
2020-02-04 2019-12-31 13F WESTERN DIGITAL COM 958102105 264,786 -50,800 17,343 20,788.8919
2019-11-12 2019-09-30 13F WESTERN DIGITAL COM 958102105 315,586 255,473 424.99 18,822 558.57 0.0242
2019-08-15 2019-06-30 13F WESTERN DIGITAL COM 958102105 60,113 55,842 1,307.47 2,858 1,294.15 0.0058
2019-05-03 2019-03-31 13F WESTERN DIGITAL Common Stock 958102105 4,271 -37 -0.86 205 28.93 0.0005
2019-05-02 2018-12-31 13F/A-1 WESTERN DIGITAL COM 958102105 4,308 -427,186 -99.00 159 -99.37 0.0004
2019-02-05 2018-12-31 13F WESTERN DIGITAL COM 958102105 4,308 -427,186 159
2018-11-01 2018-09-30 13F WESTERN DIGITAL COM 958102105 431,494 -106,421 -19.78 25,260 -39.34 0.0521
2018-08-02 2018-06-30 13F WESTERN DIGITAL COM 958102105 537,915 -339,642 -38.70 41,640 -48.57 0.0886
2018-05-04 2018-03-31 13F WESTERN DIGITAL COM 958102105 877,557 -37,085 -4.05 80,971 11.31 0.1766
2018-02-01 2017-12-31 13F WESTERN DIGITAL COM 958102105 914,642 -428,454 -31.90 72,742 -37.32 0.1531
2017-10-27 2017-09-30 13F WESTERN DIGITAL COM 958102105 1,343,096 -577,696 -30.08 116,044 -31.81 0.2607
2017-08-07 2017-06-30 13F WESTERN DIGITAL COM 958102105 1,920,792 122,064 6.79 170,182 14.64 0.3984
2017-05-10 2017-03-31 13F WESTERN DIGITAL COM 958102105 1,798,728 658,041 57.69 148,450 91.52 0.3534
2017-02-09 2016-12-31 13F WESTERN DIGITAL COM 958102105 1,140,687 319,762 38.95 77,510 61.48 0.1955
2016-11-02 2016-09-30 13F Western Digital COM 958102105 820,925 728,684 789.98 47,999 1,001.15 0.1344
2016-08-09 2016-06-30 13F Western Digital COM 958102105 92,241 56,027 154.71 4,359 154.76 0.0174
2016-05-17 2016-03-31 13F/A-2 WESTERN DIGITAL COM 958102105 36,214 26,233 262.83 1,711 185.64 0.0071
2016-05-12 2016-03-31 13F/A-1 WESTERN DIGITAL COM 958102105 36,214 0 1,711 0.0070
2016-05-12 2016-03-31 13F WESTERN DIGITAL COM 958102105 36,214 1,711
2016-02-10 2015-12-31 13F WESTERN DIGITAL COM 958102105 9,981 -25,732 -72.05 599 -78.89 0.0025
2015-11-06 2015-09-30 13F WESTERN DIGITAL COM 958102105 35,713 -4,778 -11.80 2,837 -10.79 0.0117
2015-08-14 2015-06-30 13F/A-01 Western Digital COM 958102105 40,491 11,546 39.89 3,180 20.73 0.0118
2015-08-07 2015-06-30 13F Western Digital COM 958102105 40,491 3,180
2015-05-07 2015-03-31 13F Western Digital COM 958102105 28,945 -77 -0.27 2,634 -18.02 0.0095
2015-02-11 2014-12-31 13F Western Digital COM 958102105 29,022 29,022 56,805.88 3,213 107,000.00 0.0118
2014-02-12 2013-12-31 13F Western Digital Common Stock 958102105 0 -51 -100.00 0 -100.00
2014-03-12 2013-09-30 13F/A-1 Western Digital Common Stock 958102105 51 51 3 0.0000
2013-11-12 2013-09-30 13F Western Digital Common Stock 958102105 51 3
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.