Alliant Energy Corporation
US ˙ NasdaqGS ˙ US0188021085

SecurityLNT / Alliant Energy Corporation
InstitutionSignaturefd, Llc
Latest Disclosed Ownership5,943 shares
Latest Disclosed Value $ 426,504
Signaturefd, Llc reports 10.24% increase in ownership of LNT / Alliant Energy Corporation

On April 7, 2026 - Signaturefd, Llc filed a 13F-HR form disclosing ownership of 5,943 shares of Alliant Energy Corporation (US:LNT) valued at $426,470 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 5,391 shares of Alliant Energy Corporation. This represents a change in shares of 10.24% during the quarter. The current value of the position is $433,066 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)
2026-04-07 2026-03-31 13F ALLIANT ENERGY COM 018802108 5,943 552 10.24 427 21.71 0.0065
2026-01-20 2025-12-31 13F ALLIANT ENERGY COM 018802108 5,391 -100 -1.82 350 -5.41 0.0054
2025-10-21 2025-09-30 13F ALLIANT ENERGY COM 018802108 5,491 533 10.75 370 23.75 0.0058
2025-07-16 2025-06-30 13F ALLIANT ENERGY COM 018802108 4,958 -254 -4.87 300 -10.75 0.0051
2025-05-02 2025-03-31 13F ALLIANT ENERGY COM 018802108 5,212 417 8.70 335 18.37 0.0063
2025-02-10 2024-12-31 13F ALLIANT ENERGY COM 018802108 4,795 -11 -0.23 284 -2.75 0.0054
2024-10-21 2024-09-30 13F ALLIANT ENERGY COM 018802108 4,806 74 1.56 292 21.25 0.0056
2024-07-29 2024-06-30 13F ALLIANT ENERGY COM 018802108 4,732 431 10.02 241 11.11 0.0049
2024-05-03 2024-03-31 13F ALLIANT ENERGY COM 018802108 4,301 312 7.82 217 5.88 0.0046
2024-02-01 2023-12-31 13F ALLIANT ENERGY COM 018802108 3,989 -1,520 -27.59 205 -23.31 0.0047
2023-11-03 2023-09-30 13F ALLIANT ENERGY COM 018802108 5,509 -1,211 -18.02 267 -24.43 0.0070
2023-08-01 2023-06-30 13F ALLIANT ENERGY COM 018802108 6,720 -317 -4.50 353 -6.13 0.0090
2023-04-28 2023-03-31 13F ALLIANT ENERGY COM 018802108 7,037 1,772 33.66 376 29.31 0.0103
2023-01-30 2022-12-31 13F ALLIANT ENERGY COM 018802108 5,265 1,275 31.95 291 37.44 0.0085
2022-11-08 2022-09-30 13F ALLIANT ENERGY COM 018802108 3,990 -36 -0.89 211 -10.59 0.0072
2022-08-10 2022-06-30 13F ALLIANT ENERGY COM 018802108 4,026 73 1.85 236 -4.45 0.0080
2022-05-02 2022-03-31 13F ALLIANT ENERGY COM 018802108 3,953 -329 -7.68 247 -6.08 0.0074
2022-01-25 2021-12-31 13F ALLIANT ENERGY COM 018802108 4,282 305 7.67 263 17.94 0.0081
2021-10-28 2021-09-30 13F ALLIANT ENERGY COM 018802108 3,977 311 8.48 223 9.31 0.0077
2021-07-26 2021-06-30 13F ALLIANT ENERGY COM 018802108 3,666 333 9.99 204 12.71 0.0081
2021-04-30 2021-03-31 13F ALLIANT ENERGY COM 018802108 3,333 323 10.73 181 16.77 0.0080
2021-02-11 2020-12-31 13F ALLIANT ENERGY COM 018802108 3,010 -81 -2.62 155 -3.12 0.0073
2020-11-03 2020-09-30 13F ALLIANT ENERGY COM 018802108 3,091 98 3.27 160 11.89 0.0086
2020-07-30 2020-06-30 13F ALLIANT ENERGY COM 018802108 2,993 -607 -16.86 143 -17.82 0.0086
2020-04-23 2020-03-31 13F ALLIANT ENERGY COM 018802108 3,600 -242 -6.30 174 -17.14 0.0150
2020-02-05 2019-12-31 13F ALLIANT ENERGY COM 018802108 3,842 459 13.57 210 15.38 0.0155
2019-10-16 2019-09-30 13F ALLIANT ENERGY COM 018802108 3,383 207 6.52 182 16.67 0.0150
2019-07-31 2019-06-30 13F ALLIANT ENERGY COM 018802108 3,176 272 9.37 156 13.87 0.0135
2019-05-09 2019-03-31 13F ALLIANT ENERGY COM 018802108 2,904 -114 -3.78 137 7.03 0.0117
2019-02-13 2018-12-31 13F ALLIANT ENERGY COM 018802108 3,018 212 7.56 128 7.56 0.0119
2018-11-14 2018-09-30 13F ALLIANT ENERGY COM 018802108 2,806 317 12.74 119 13.33 0.0121
2018-08-14 2018-06-30 13F ALLIANT ENERGY COM 018802108 2,489 55 2.26 105 6.06 0.0117
2018-05-08 2018-03-31 13F ALLIANT ENERGY COM 018802108 2,434 2,434 99 0.0116
2017-02-14 2016-12-31 13F ALLIANT ENERGY COM 018802108 0 -1,038 -100.00 0 -100.00
2016-11-14 2016-09-30 13F ALLIANT ENERGY COM 018802108 1,038 20 1.96 40 0.00 0.0058
2016-07-29 2016-06-30 13F ALLIANT ENERGY COM 018802108 1,018 509 100.00 40 5.26 0.0058
2016-05-12 2016-03-31 13F ALLIANT ENERGY COM 018802108 509 103 25.37 38 52.00 0.0065
2016-01-22 2015-12-31 13F ALLIANT ENERGY COM 018802108 406 93 29.71 25 38.89 0.0048
2015-10-23 2015-09-30 13F ALLIANT ENERGY COM 018802108 313 313 18 0.0041
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.