Western Digital Corporation
US ˙ NasdaqGS ˙ US9581021055

SecurityWDC / Western Digital Corporation
InstitutionRYDEX VARIABLE TRUST - Technology Fund Variable Annuity
Latest Disclosed Ownership2,106 shares
Latest Disclosed Value $ 134,762
RYDEX VARIABLE TRUST - Technology Fund Variable Annuity reports 35.00% increase in ownership of WDC / Western Digital Corporation

On August 27, 2025 - RYDEX VARIABLE TRUST - Technology Fund Variable Annuity filed a NPORT-P form disclosing ownership of 2,106 shares of Western Digital Corporation (US:WDC) valued at $134,763 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 29, 2025 disclosing 1,560 shares of Western Digital Corporation. This represents a change in shares of 35.00% during the quarter. The current value of the position is $1,077,682 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.

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)
2025-08-27 2025-06-30 NP Western Digital EC US9581021055 2,106 546 35.00 135 112.70 0.4531
2025-05-29 2025-03-31 NP Western Digital EC US9581021055 1,560 -14 -0.89 63 -32.26 0.3703
2025-03-03 2024-12-31 NP Western Digital EC US9581021055 1,574 127 8.78 94 -5.10 0.4083
2024-11-29 2024-09-30 NP Western Digital EC US9581021055 1,447 -86 -5.61 99 -15.52 0.4975
2024-08-29 2024-06-30 NP Western Digital EC US9581021055 1,533 -436 -22.14 116 -13.43 0.5161
2024-05-30 2024-03-31 NP Western Digital EC US9581021055 1,969 -129 -6.15 134 22.94 0.5146
2024-02-29 2023-12-31 NP Western Digital EC US9581021055 2,098 -233 -10.00 110 2.83 0.4564
2023-11-29 2023-09-30 NP Western Digital EC US9581021055 2,331 -119 -4.86 106 15.22 0.4901
2023-08-28 2023-06-30 NP Western Digital EC US9581021055 2,450 50 2.08 93 2.22 0.4089
2023-05-30 2023-03-31 NP Western Digital EC US9581021055 2,400 622 34.98 90 60.71 0.4335
2023-02-28 2022-12-31 NP Western Digital EC US9581021055 1,778 219 14.05 56 12.00 0.3628
2022-11-29 2022-09-30 NP Western Digital EC US9581021055 1,559 153 10.88 51 -20.63 0.3479
2022-08-29 2022-06-30 NP Western Digital EC US9581021055 1,406 -226 -13.85 63 -22.22 0.4167
2022-05-26 2022-03-31 NP Western Digital EC US9581021055 1,632 -376 -18.73 81 -37.69 0.3842
2022-02-28 2021-12-31 NP Western Digital EC US9581021055 2,008 78 4.04 131 20.37 0.4307
2021-11-29 2021-09-30 NP Western Digital EC US9581021055 1,930 414 27.31 109 0.93 0.3986
2021-08-27 2021-06-30 NP Western Digital EC US9581021055 1,516 -125 -7.62 108 -1.83 0.4446
2021-05-27 2021-03-31 NP Western Digital EC US9581021055 1,641 -353 -17.70 110 -0.91 0.4546
2021-03-01 2020-12-31 NP Western Digital EC US9581021055 1,994 -111 -5.27 110 44.74 0.4361
2020-11-25 2020-09-30 NP Western Digital EC US9581021055 2,105 171 8.84 77 -10.59 0.3695
2020-08-27 2020-06-30 NP Western Digital EC US9581021055 1,934 470 32.10 85 41.67 0.4488
2020-06-01 2020-03-31 NP Western Digital EC US9581021055 1,464 -576 -28.24 61 -53.49 0.4433
2020-03-02 2019-12-31 NP Western Digital EC US9581021055 2,040 44 2.20 129 8.40 0.5783
2019-11-27 2019-09-30 NP Western Digital EC US9581021055 1,996 1,996 119 0.5491
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.