Alliant Energy Corporation
US ˙ NasdaqGS ˙ US0188021085

SecurityLNT / Alliant Energy Corporation
InstitutionFifth Third Bancorp
Latest Disclosed Ownership90,054 shares
Latest Disclosed Value $ 6,462,226
Fifth Third Bancorp reports 117.55% increase in ownership of LNT / Alliant Energy Corporation

On May 1, 2026 - Fifth Third Bancorp filed a 13F-HR form disclosing ownership of 90,054 shares of Alliant Energy Corporation (US:LNT) valued at $6,462,275 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 41,395 shares of Alliant Energy Corporation. This represents a change in shares of 117.55% during the quarter. The current value of the position is $6,374,923 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)
2026-05-01 2026-03-31 13F ALLIANT ENERGY COM 018802108 90,054 48,659 117.55 6,462 140.13 0.0118
2026-02-02 2025-12-31 13F ALLIANT ENERGY COM 018802108 41,395 1,087 2.70 2,691 -0.96 0.0085
2025-11-07 2025-09-30 13F ALLIANT ENERGY COM 018802108 40,308 -389 -0.96 2,717 10.45 0.0087
2025-07-15 2025-06-30 13F ALLIANT ENERGY COM 018802108 40,697 -722 -1.74 2,461 -7.69 0.0085
2025-04-15 2025-03-31 13F ALLIANT ENERGY COM 018802108 41,419 10,781 35.19 2,665 47.16 0.0101
2025-01-21 2024-12-31 13F ALLIANT ENERGY COM 018802108 30,638 451 1.49 1,812 -1.15 0.0066
2024-10-17 2024-09-30 13F ALLIANT ENERGY COM 018802108 30,187 236 0.79 1,832 20.21 0.0066
2024-07-22 2024-06-30 13F ALLIANT ENERGY COM 018802108 29,951 -207 -0.69 1,525 0.33 0.0058
2024-04-23 2024-03-31 13F ALLIANT ENERGY COM 018802108 30,158 -2,389 -7.34 1,520 -8.99 0.0059
2024-01-19 2023-12-31 13F ALLIANT ENERGY COM 018802108 32,547 -1,394 -4.11 1,670 1.52 0.0071
2023-10-31 2023-09-30 13F ALLIANT ENERGY COM 018802108 33,941 2,947 9.51 1,644 1.11 0.0076
2023-07-26 2023-06-30 13F ALLIANT ENERGY COM 018802108 30,994 -1,087 -3.39 1,627 -5.08 0.0072
2023-04-24 2023-03-31 13F ALLIANT ENERGY COM 018802108 32,081 -6,601 -17.06 1,713 -19.77 0.0080
2023-01-25 2022-12-31 13F ALLIANT ENERGY COM 018802108 38,682 -25,164 -39.41 2,136 -36.89 0.0103
2022-10-25 2022-09-30 13F ALLIANT ENERGY COM 018802108 63,846 -763 -1.18 3,383 -10.67 0.0177
2022-08-04 2022-06-30 13F ALLIANT ENERGY COM 018802108 64,609 -707 -1.08 3,787 -7.20 0.0183
2022-04-19 2022-03-31 13F ALLIANT ENERGY COM 018802108 65,316 -326 -0.50 4,081 1.14 0.0167
2022-02-01 2021-12-31 13F ALLIANT ENERGY COM 018802108 65,642 -935 -1.40 4,035 8.26 0.0157
2021-10-15 2021-09-30 13F ALLIANT ENERGY COM 018802108 66,577 -3,341 -4.78 3,727 -4.41 0.0162
2021-08-06 2021-06-30 13F ALLIANT ENERGY COM 018802108 69,918 -3,217 -4.40 3,899 -1.57 0.0171
2021-05-07 2021-03-31 13F ALLIANT ENERGY COM 018802108 73,135 -4,876 -6.25 3,961 -1.47 0.0184
2021-02-16 2020-12-31 13F ALLIANT ENERGY COM 018802108 78,011 -1,099 -1.39 4,020 -1.62 0.0198
2020-11-09 2020-09-30 13F ALLIANT ENERGY COM 018802108 79,110 -3,407 -4.13 4,086 3.50 0.0226
2020-08-05 2020-06-30 13F ALLIANT ENERGY COM 018802108 82,517 -5,008 -5.72 3,948 -6.60 0.0237
2020-05-05 2020-03-31 13F ALLIANT ENERGY COM 018802108 87,525 -12,342 -12.36 4,227 -22.65 0.0302
2020-02-14 2019-12-31 13F ALLIANT ENERGY COM 018802108 99,867 -4,331 -4.16 5,465 -2.74 0.0304
2019-11-14 2019-09-30 13F ALLIANT ENERGY COM 018802108 104,198 -5,717 -5.20 5,619 4.15 0.0337
2019-08-07 2019-06-30 13F ALLIANT ENERGY COM 018802108 109,915 -3,890 -3.42 5,395 0.58 0.0330
2019-05-14 2019-03-31 13F ALLIANT ENERGY COM 018802108 113,805 -4,136 -3.51 5,364 7.65 0.0344
2019-02-14 2018-12-31 13F ALLIANT ENERGY COM 018802108 117,941 -6,321 -5.09 4,983 -5.80 0.0362
2018-11-14 2018-09-30 13F ALLIANT ENERGY COM 018802108 124,262 -2,120 -1.68 5,290 -1.08 0.0337
2018-08-14 2018-06-30 13F ALLIANT ENERGY COM 018802108 126,382 2,809 2.27 5,348 5.92 0.0363
2018-05-15 2018-03-31 13F ALLIANT ENERGY COM 018802108 123,573 -12,025 -8.87 5,049 -12.62 0.0344
2018-02-14 2017-12-31 13F ALLIANT ENERGY COM 018802108 135,598 -6,211 -4.38 5,778 -1.98 0.0393
2017-11-14 2017-09-30 13F ALLIANT ENERGY COM 018802108 141,809 -17,556 -11.02 5,895 -7.92 0.0422
2017-08-11 2017-06-30 13F ALLIANT ENERGY COM 018802108 159,365 -60,497 -27.52 6,402 -26.49 0.0471
2017-05-12 2017-03-31 13F ALLIANT ENERGY COM 018802108 219,862 -20,113 -8.38 8,709 -4.22 0.0658
2017-02-13 2016-12-31 13F/A-1 ALLIANT ENERGY COM 018802108 239,975 -32,036 -11.78 9,093 -12.74 0.0733
2017-02-09 2016-12-31 13F ALLIANT ENERGY COM 018802108 272,011 0 10,421 0.0862
2016-11-10 2016-09-30 13F ALLIANT ENERGY COM 018802108 272,011 -8,197 -2.93 10,421 -6.32 0.0862
2016-08-11 2016-06-30 13F ALLIANT ENERGY COM 018802108 280,208 121,566 76.63 11,124 -5.60 0.0945
2016-05-13 2016-03-31 13F ALLIANT ENERGY COM 018802108 158,642 -13,745 -7.97 11,784 9.46 0.1020
2016-02-16 2015-12-31 13F ALLIANT ENERGY COM 018802108 172,387 -9,558 -5.25 10,766 1.17 0.0945
2015-11-13 2015-09-30 13F ALLIANT ENERGY COM 018802108 181,945 -4,692 -2.51 10,642 -1.22 0.0988
2015-08-14 2015-06-30 13F ALLIANT ENERGY COM 018802108 186,637 -13,425 -6.71 10,773 -14.53 0.0939
2015-05-14 2015-03-31 13F ALLIANT ENERGY COM 018802108 200,062 -7,267 -3.51 12,604 -8.47 0.1091
2015-02-13 2014-12-31 13F ALLIANT ENERGY COM 018802108 207,329 -4,543 -2.14 13,771 17.30 0.1176
2014-11-17 2014-09-30 13F ALLIANT ENERGY COM 018802108 211,872 4,505 2.17 11,740 -6.97 0.1070
2014-08-14 2014-06-30 13F ALLIANT ENERGY COM 018802108 207,367 -6,437 -3.01 12,620 3.90 0.1143
2014-05-15 2014-03-31 13F ALLIANT ENERGY COM 018802108 213,804 -1,289 -0.60 12,146 9.43 0.1141
2014-02-14 2013-12-31 13F ALLIANT ENERGY COM 018802108 215,093 57,232 36.25 11,099 41.89 0.1072
2013-11-14 2013-09-30 13F ALLIANT ENERGY COM 018802108 157,861 -8,484 -5.10 7,822 -6.74 0.0806
2013-08-14 2013-06-30 13F ALLIANT ENERGY COM 018802108 166,345 166,345 8,387 0.0895
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.