Alliant Energy Corporation
US ˙ NasdaqGS ˙ US0188021085

SecurityLNT / Alliant Energy Corporation
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership3,460 shares
Latest Disclosed Value $ 248,236
Advisory Services Network, LLC reports 5.75% increase in ownership of LNT / Alliant Energy Corporation

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 3,460 shares of Alliant Energy Corporation (US:LNT) valued at $248,290 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 3,272 shares of Alliant Energy Corporation. This represents a change in shares of 5.75% during the quarter. The current value of the position is $244,933 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)
2026-05-15 2026-03-31 13F ALLIANT ENERGY Stock 018802108 3,460 188 5.75 248 16.98 0.0023
2026-02-17 2025-12-31 13F ALLIANT ENERGY Stock 018802108 3,272 -57 -1.71 213 -5.36 0.0030
2025-11-18 2025-09-30 13F ALLIANT ENERGY Stock 018802108 3,329 -2,542 -43.30 224 -41.21 0.0033
2025-08-19 2025-06-30 13F ALLIANT ENERGY Stock 018802108 5,871 -173 -2.86 382 -1.80 0.0061
2025-05-15 2025-03-31 13F ALLIANT ENERGY Stock 018802108 6,044 347 6.09 389 15.48 0.0075
2025-02-13 2024-12-31 13F ALLIANT ENERGY Stock 018802108 5,697 1,410 32.89 337 54.13 0.0063
2024-11-14 2024-09-30 13F ALLIANT ENERGY Stock 018802108 4,287 0 0.00 218 0.00 0.0045
2024-08-13 2024-06-30 13F ALLIANT ENERGY Stock 018802108 4,287 4,287 218 0.0045
2024-05-06 2024-03-31 13F ALLIANT ENERGY Stock 018802108 0 -2,134 -100.00 0 -100.00
2024-02-09 2023-12-31 13F ALLIANT ENERGY Stock 018802108 2,134 2,134 110 0.0027
2023-08-09 2023-06-30 13F ALLIANT ENERGY Stock 018802108 0 -1,626 -100.00 0 -100.00
2023-05-17 2023-03-31 13F ALLIANT ENERGY Stock 018802108 1,626 120 7.97 87 3.61 0.0024
2023-02-13 2022-12-31 13F ALLIANT ENERGY Stock 018802108 1,506 1,506 83 0.0025
2021-11-05 2021-09-30 13F ALLIANT ENERGY Stock 018802108 0 -2,879 -100.00 0 -100.00
2021-08-12 2021-06-30 13F ALLIANT ENERGY Stock 018802108 2,879 2,879 161 0.0051
2021-05-24 2021-03-31 13F ALLIANT ENERGY Stock 018802108 0 -4,297 -100.00 0 -100.00
2021-02-09 2020-12-31 13F ALLIANT ENERGY Stock 018802108 4,297 718 20.06 221 19.46 0.0089
2020-11-16 2020-09-30 13F ALLIANT ENERGY Stock 018802108 3,579 3,579 -16.71 185 -16.29 0.0087
2020-08-10 2020-06-30 13F ALLIANT ENERGY Stock 018802108 0 -1,474 -100.00 0 -100.00
2020-05-15 2020-03-31 13F ALLIANT ENERGY Stock 018802108 1,474 777 111.48 71 86.84 0.0046
2020-02-04 2019-12-31 13F ALLIANT ENERGY Stock 018802108 697 -25 -3.46 38 8.57 0.0020
2019-11-04 2019-09-30 13F ALLIANT ENERGY Stock 018802108 722 0 0.00 35 0.00 0.0021
2019-08-01 2019-06-30 13F ALLIANT ENERGY Stock 018802108 722 563 354.09 35 337.50 0.0021
2019-05-20 2019-03-31 13F ALLIANT ENERGY Stock 018802108 159 24 17.78 8 33.33 0.0006
2019-02-15 2018-12-31 13F ALLIANT ENERGY Stock 018802108 135 0 0.00 6 0.00 0.0005
2018-11-02 2018-09-30 13F ALLIANT ENERGY Stock 018802108 135 51 60.71 6 50.00 0.0004
2018-07-27 2018-06-30 13F ALLIANT ENERGY Stock 018802108 84 -88 -51.16 4 -42.86 0.0003
2018-04-23 2018-03-31 13F ALLIANT ENERGY Stock 018802108 172 -101 -37.00 7 -41.67 0.0006
2018-02-08 2017-12-31 13F ALLIANT ENERGY Stock 018802108 273 207 313.64 12 300.00 0.0010
2017-10-12 2017-09-30 13F ALLIANT ENERGY Stock 018802108 66 0 0.00 3 0.00 0.0003
2017-08-17 2017-06-30 13F ALLIANT ENERGY CORP COM Stock 018802108 66 16 32.00 3 50.00 0.0004
2017-04-28 2017-03-31 13F ALLIANT ENERGY CORP COM Stock 018802108 50 -200 -80.00 2 -80.00 0.0003
2016-10-07 2016-09-30 13F ALLIANT ENERGY Stock 018802108 250 250 400.00 10 400.00 0.0019
2016-04-21 2016-03-31 13F ALLIANT ENERGY CORP COM Stock 018802108 0 0 0 0.0000
2015-10-01 2015-09-30 13F ALLIANT ENERGY CORP COM Stock 018802108 0 -6,475 -100.00 0 -100.00
2015-07-02 2015-06-30 13F ALLIANT ENERGY CORP COM Stock 018802108 6,475 0 0.00 376 -8.74 0.1109
2015-04-08 2015-03-31 13F ALLIANT ENERGY CORP COM Stock 018802108 6,475 -75 -1.15 412 -9.65 0.1138
2015-01-23 2014-12-31 13F ALLIANT ENERGY Stock 018802108 6,550 550 9.17 456 37.35 0.1426
2014-10-07 2014-09-30 13F ALLIANT ENERGY Stock 018802108 6,000 100 1.69 332 -7.52 0.1214
2014-07-10 2014-06-30 13F ALLIANT ENERGY Stock 018802108 5,900 1,000 20.41 359 29.14 0.1520
2014-04-09 2014-03-31 13F ALLIANT ENERGY CORP COM Stock 018802108 4,900 4,900 278 0.1433
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.