Alliant Energy Corporation
US ˙ NasdaqGS ˙ US0188021085

SecurityLNT / Alliant Energy Corporation
InstitutionHm Payson & Co
Latest Disclosed Ownership3,797 shares
Latest Disclosed Value $ 272,473
Hm Payson & Co ownership in LNT / Alliant Energy Corporation

On April 13, 2026 - Hm Payson & Co filed a 13F-HR form disclosing ownership of 3,797 shares of Alliant Energy Corporation (US:LNT) valued at $272,473 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 3,797 shares of Alliant Energy Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $268,790 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)
2026-04-13 2026-03-31 13F ALLIANT ENERGY COM 018802108 3,797 0 0.00 272 10.57 0.0020
2026-02-12 2025-12-31 13F ALLIANT ENERGY COM 018802108 3,797 -322 -7.82 247 -11.19 0.0035
2025-10-17 2025-09-30 13F ALLIANT ENERGY COM 018802108 4,119 2,644 179.25 278 211.24 0.0040
2025-10-17 2025-06-30 13F ALLIANT ENERGY COM 018802108 1,475 0 0.00 89 -5.32 0.0014
2025-04-29 2025-03-31 13F ALLIANT ENERGY COM 018802108 1,475 0 0.00 95 8.05 0.0017
2025-02-07 2024-12-31 13F ALLIANT ENERGY COM 018802108 1,475 -22 -1.47 87 -3.33 0.0015
2024-10-28 2024-09-30 13F ALLIANT ENERGY COM 018802108 1,497 22 1.49 91 20.00 0.0016
2024-08-13 2024-06-30 13F ALLIANT ENERGY COM 018802108 1,475 0 0.00 75 1.35 0.0014
2024-06-20 2024-03-31 13F ALLIANT ENERGY COM 018802108 1,475 0 0.00 74 -1.33 0.0014
2024-02-13 2023-12-31 13F ALLIANT ENERGY COM 018802108 1,475 0 0.00 76 5.63 0.0016
2023-11-06 2023-09-30 13F ALLIANT ENERGY COM 018802108 1,475 0 0.00 71 -7.79 0.0017
2023-07-17 2023-06-30 13F ALLIANT ENERGY COM 018802108 1,475 0 0.00 77 -1.28 0.0017
2023-04-18 2023-03-31 13F ALLIANT ENERGY COM 018802108 1,475 0 0.00 79 -3.70 0.0019
2023-02-06 2022-12-31 13F ALLIANT ENERGY COM 018802108 1,475 -4,140 -73.73 81 -72.82 0.0020
2022-10-25 2022-09-30 13F ALLIANT ENERGY COM 018802108 5,615 0 0.00 298 -9.42 0.0082
2022-08-15 2022-06-30 13F ALLIANT ENERGY COM 018802108 5,615 0 0.00 329 -6.27 0.0084
2022-05-12 2022-03-31 13F ALLIANT ENERGY COM 018802108 5,615 0 0.00 351 1.74 0.0080
2022-02-15 2021-12-31 13F ALLIANT ENERGY COM 018802108 5,615 0 0.00 345 9.87 0.0075
2021-11-30 2021-09-30 13F ALLIANT ENERGY COM 018802108 5,615 0 0.00 314 0.32 0.0076
2021-08-17 2021-06-30 13F ALLIANT ENERGY COM 018802108 5,615 -988 -14.96 313 -12.57 0.0076
2021-06-15 2021-03-31 13F ALLIANT ENERGY COM 018802108 6,603 0 0.00 358 5.29 0.0095
2021-03-10 2020-12-31 13F ALLIANT ENERGY COM 018802108 6,603 0 0.00 340 -0.29 0.0094
2020-12-21 2020-09-30 13F ALLIANT ENERGY COM 018802108 6,603 0 0.00 341 7.91 0.0105
2020-08-13 2020-06-30 13F ALLIANT ENERGY COM 018802108 6,603 0 0.00 316 -0.94 0.0106
2020-07-01 2020-03-31 13F ALLIANT ENERGY COM 018802108 6,603 0 0.00 319 -11.63 0.0125
2020-02-18 2019-12-31 13F ALLIANT ENERGY COM 018802108 6,603 0 0.00 361 1.40 0.0116
2019-11-12 2019-09-30 13F ALLIANT ENERGY COM 018802108 6,603 0 0.00 356 9.88 0.0125
2019-08-15 2019-06-30 13F ALLIANT ENERGY COM 018802108 6,603 6,603 324 0.0116
2019-02-15 2018-12-31 13F ALLIANT ENERGY COMMON STOCK 018802108 0 -6,823 -100.00 0 -100.00
2018-11-30 2018-09-30 13F ALLIANT ENERGY COMMON STOCK 018802108 6,823 -380 -5.28 290 -4.92 0.0130
2018-08-27 2018-06-30 13F ALLIANT ENERGY COMMON STOCK 018802108 7,203 -293 -3.91 305 -0.33 0.0130
2018-05-14 2018-03-31 13F ALLIANT ENERGY COMMON STOCK 018802108 7,496 0 0.00 306 -4.08 0.0126
2018-02-16 2017-12-31 13F ALLIANT ENERGY COMMON STOCK 018802108 7,496 720 10.63 319 13.12 0.0128
2017-11-06 2017-09-30 13F ALLIANT ENERGY COMMON STOCK 018802108 6,776 0 0.00 282 3.68 0.0121
2017-08-04 2017-06-30 13F ALLIANT ENERGY COMMON STOCK 018802108 6,776 0 0.00 272 1.49 0.0123
2017-05-25 2017-03-31 13F ALLIANT ENERGY COMMON STOCK 018802108 6,776 -500 -6.87 268 -2.90 0.0122
2017-02-15 2016-12-31 13F ALLIANT ENERGY COMMON STOCK 018802108 7,276 0 0.00 276 -1.08 0.0131
2016-11-14 2016-09-30 13F ALLIANT ENERGY COMMON STOCK 018802108 7,276 -200 -2.68 279 -6.06 0.0136
2016-08-08 2016-06-30 13F ALLIANT ENERGY COMMON STOCK 018802108 7,476 3,392 83.06 297 -1.98 0.0148
2016-05-19 2016-03-31 13F ALLIANT ENERGY COMMON STOCK 018802108 4,084 0 0.00 303 18.82 0.0158
2016-02-23 2015-12-31 13F ALLIANT ENERGY COMMON STOCK 018802108 4,084 0 0.00 255 6.69 0.0131
2015-11-02 2015-09-30 13F ALLIANT ENERGY COMMON STOCK 018802108 4,084 0 0.00 239 1.27 0.0130
2015-08-11 2015-06-30 13F ALLIANT ENERGY COMMON STOCK 018802108 4,084 0 0.00 236 -8.17 0.0117
2015-05-06 2015-03-31 13F ALLIANT ENERGY COMMON STOCK 018802108 4,084 0 0.00 257 -5.17 0.0128
2015-02-10 2014-12-31 13F ALLIANT ENERGY COMMON STOCK 018802108 4,084 -2,006 -32.94 271 -19.58 0.0134
2014-11-12 2014-09-30 13F ALLIANT ENERGY COMMON STOCK 018802108 6,090 0 0.00 337 -9.16 0.0173
2014-08-13 2014-06-30 13F ALLIANT ENERGY COMMON STOCK 018802108 6,090 -1,554 -20.33 371 -14.52 0.0191
2014-05-07 2014-03-31 13F ALLIANT ENERGY COMMON STOCK 018802108 7,644 -50 -0.65 434 9.32 0.0230
2014-02-10 2013-12-31 13F ALLIANT ENERGY COMMON STOCK 018802108 7,694 0 0.00 397 4.20 0.0213
2013-11-13 2013-09-30 13F ALLIANT ENERGY COMMON STOCK 018802108 7,694 -364 -4.52 381 -6.16 0.0221
2013-08-13 2013-06-30 13F ALLIANT ENERGY COMMON STOCK 018802108 8,058 8,058 406 0.0244
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.