Alliant Energy Corporation
US ˙ NasdaqGS ˙ US0188021085

SecurityLNT / Alliant Energy Corporation
InstitutionCypress Capital Group
Latest Disclosed Ownership5,553 shares
Latest Disclosed Value $ 398,484
Cypress Capital Group ownership in LNT / Alliant Energy Corporation

On May 15, 2026 - Cypress Capital Group filed a 13F-HR form disclosing ownership of 5,553 shares of Alliant Energy Corporation (US:LNT) valued at $398,483 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 5,553 shares of Alliant Energy Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $393,097 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)
2026-05-15 2026-03-31 13F ALLIANT ENERGY COM 018802108 5,553 0 0.00 398 10.25 0.0448
2026-02-11 2025-12-31 13F ALLIANT ENERGY COM 018802108 5,553 0 0.00 361 -3.48 0.0404
2025-11-03 2025-09-30 13F ALLIANT ENERGY COM 018802108 5,553 0 0.00 374 11.64 0.0448
2025-07-25 2025-06-30 13F ALLIANT ENERGY COM 018802108 5,553 -275 -4.72 336 -10.67 0.0418
2025-05-12 2025-03-31 13F ALLIANT ENERGY COM 018802108 5,828 -65 -1.10 375 7.76 0.0491
2025-02-06 2024-12-31 13F ALLIANT ENERGY COM 018802108 5,893 -194 -3.19 349 -5.69 0.0428
2024-11-08 2024-09-30 13F ALLIANT ENERGY COM 018802108 6,087 44 0.73 369 20.20 0.0415
2024-07-25 2024-06-30 13F ALLIANT ENERGY COM 018802108 6,043 20 0.33 308 1.32 0.0369
2024-05-08 2024-03-31 13F ALLIANT ENERGY COM 018802108 6,023 155 2.64 304 0.66 0.0364
2024-01-24 2023-12-31 13F ALLIANT ENERGY COM 018802108 5,868 -595 -9.21 301 -3.83 0.0392
2023-11-02 2023-09-30 13F ALLIANT ENERGY COM 018802108 6,463 -221 -3.31 313 -10.57 0.0452
2023-07-26 2023-06-30 13F ALLIANT ENERGY COM 018802108 6,684 -404 -5.70 351 -7.41 0.0507
2023-05-04 2023-03-31 13F ALLIANT ENERGY COM 018802108 7,088 -200 -2.74 378 -5.97 0.0581
2023-02-14 2022-12-31 13F ALLIANT ENERGY COM 018802108 7,288 -17 -0.23 402 3.88 0.0607
2022-11-04 2022-09-30 13F ALLIANT ENERGY COM 018802108 7,305 -80 -1.08 387 -10.62 0.0645
2022-07-26 2022-06-30 13F ALLIANT ENERGY COM 018802108 7,385 -100 -1.34 433 -7.48 0.0660
2022-05-16 2022-03-31 13F ALLIANT ENERGY COM 018802108 7,485 885 13.41 468 15.27 0.0576
2022-02-15 2021-12-31 13F ALLIANT ENERGY COM 018802108 6,600 -3,016 -31.36 406 -24.54 0.0508
2021-10-12 2021-09-30 13F ALLIANT ENERGY COMMON STOCK 018802108 9,616 805 9.14 538 9.57 0.0731
2021-07-13 2021-06-30 13F ALLIANT ENERGY COMMON STOCK 018802108 8,811 -25 -0.28 491 2.51 0.0665
2021-04-14 2021-03-31 13F ALLIANT ENERGY COMMON STOCK 018802108 8,836 368 4.35 479 9.86 0.0680
2021-01-12 2020-12-31 13F ALLIANT ENERGY COMMON STOCK 018802108 8,468 408 5.06 436 4.56 0.0657
2020-10-08 2020-09-30 13F ALLIANT ENERGY COMMON STOCK 018802108 8,060 -100 -1.23 417 6.92 0.0695
2020-07-10 2020-06-30 13F ALLIANT ENERGY COMMON STOCK 018802108 8,160 645 8.58 390 7.44 0.0715
2020-04-08 2020-03-31 13F ALLIANT ENERGY COMMON STOCK 018802108 7,515 -145 -1.89 363 -13.37 0.0838
2020-01-10 2019-12-31 13F ALLIANT ENERGY COMMON STOCK 018802108 7,660 -80 -1.03 419 0.48 0.0746
2019-10-10 2019-09-30 13F ALLIANT ENERGY COMMON STOCK 018802108 7,740 450 6.17 417 16.48 0.0803
2019-08-15 2019-06-30 13F ALLIANT ENERGY COMMON STOCK 018802108 7,290 -565 -7.19 358 -3.24 0.0706
2019-05-14 2019-03-31 13F ALLIANT ENERGY COMMON STOCK 018802108 7,855 235 3.08 370 14.91 0.0757
2019-02-19 2018-12-31 13F ALLIANT ENERGY COMMON STOCK 018802108 7,620 785 11.49 322 10.65 0.0738
2018-11-15 2018-09-30 13F ALLIANT ENERGY COMMON STOCK 018802108 6,835 815 13.54 291 14.12 0.0551
2018-08-15 2018-06-30 13F ALLIANT ENERGY COMMON STOCK 018802108 6,020 6,020 255 0.0526
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.