Alliant Energy Corporation
US ˙ NasdaqGS ˙ US0188021085

SecurityLNT / Alliant Energy Corporation
InstitutionMacquarie Group Ltd
Latest Disclosed Ownership178,678 shares
Latest Disclosed Value $ 12,821,933
Macquarie Group Ltd reports 4.73% decrease in ownership of LNT / Alliant Energy Corporation

On May 15, 2026 - Macquarie Group Ltd filed a 13F-HR form disclosing ownership of 178,678 shares of Alliant Energy Corporation (US:LNT) valued at $12,821,933 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 187,542 shares of Alliant Energy Corporation. This represents a change in shares of -4.73% during the quarter. The current value of the position is $12,648,616 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 COM 018802108 178,678 -8,864 -4.73 12,822 5.16 0.0597
2026-02-13 2025-12-31 13F ALLIANT ENERGY COM 018802108 187,542 5,108 2.80 12,192 -0.85 0.0533
2025-11-13 2025-09-30 13F ALLIANT ENERGY COM 018802108 182,434 5,415 3.06 12,298 14.88 0.0144
2025-08-14 2025-06-30 13F ALLIANT ENERGY COM 018802108 177,019 2,975 1.71 10,704 -4.36 0.0131
2025-08-14 2025-03-31 13F/A-1 ALLIANT ENERGY COM 018802108 174,044 -19,379 -10.02 11,192 3.15 0.0139
2025-05-15 2025-03-31 13F ALLIANT ENERGY COM 018802108 188,534 -4,889 10,269 0.0084
2025-02-14 2024-12-31 13F ALLIANT ENERGY COM 018802108 193,423 882 0.46 10,850 -7.15 0.0132
2024-11-14 2024-09-30 13F ALLIANT ENERGY COM 018802108 192,541 -14,472 -6.99 11,685 10.91 0.0126
2024-08-09 2024-06-30 13F ALLIANT ENERGY COM 018802108 207,013 -4,456 -2.11 10,537 -1.14 0.0121
2024-05-14 2024-03-31 13F ALLIANT ENERGY COM 018802108 211,469 7,920 3.89 10,658 2.07 0.0121
2024-02-14 2023-12-31 13F ALLIANT ENERGY COM 018802108 203,549 21,619 11.88 10,443 18.47 0.0121
2023-11-14 2023-09-30 13F ALLIANT ENERGY COM 018802108 181,930 14,361 8.57 8,814 0.23 0.0111
2023-10-27 2023-06-30 13F/A-2 ALLIANT ENERGY COM 018802108 167,569 20,113 13.64 8,794 7.23 0.0101
2023-10-12 2023-06-30 13F/A-1 ALLIANT ENERGY COM 018802108 167,569 20,113 8,794 0.0088
2023-08-14 2023-06-30 13F ALLIANT ENERGY COM 018802108 167,569 20,113 8,794 0.0089
2023-06-01 2023-03-31 13F/A-1 ALLIANT ENERGY COM 018802108 147,456 -11,813 -7.42 8,202 -5.18 0.0097
2023-05-15 2023-03-31 13F ALLIANT ENERGY COM 018802108 147,456 -11,813 8,202 0.0075
2023-02-21 2022-12-31 13F ALLIANT ENERGY COM 018802108 159,269 5,507 3.58 8,650 3.49 0.0102
2022-11-14 2022-09-30 13F ALLIANT ENERGY COM 018802108 153,762 -5,039 -3.17 8,357 -11.86 0.0102
2022-08-17 2022-06-30 13F/A-1 ALLIANT ENERGY COM 018802108 158,801 9,762 6.55 9,482 1.83 0.0106
2022-08-15 2022-06-30 13F ALLIANT ENERGY COM 018802108 158,801 9,762 9,482 0.0034
2022-05-16 2022-03-31 13F ALLIANT ENERGY COM 018802108 149,039 -27,790 -15.72 9,312 -10.20 0.0071
2022-02-11 2021-12-31 13F ALLIANT ENERGY COM 018802108 176,829 128,097 262.86 10,370 280.13 0.0086
2021-11-12 2021-09-30 13F ALLIANT ENERGY COM 018802108 48,732 -15,027 -23.57 2,728 -23.31 0.0023
2021-08-13 2021-06-30 13F ALLIANT ENERGY COM 018802108 63,759 15,667 32.58 3,557 36.44 0.0029
2021-05-14 2021-03-31 13F ALLIANT ENERGY COM 018802108 48,092 -7,386 -13.31 2,607 -8.72 0.0037
2021-02-16 2020-12-31 13F ALLIANT ENERGY COM 018802108 55,478 -130,548 -70.18 2,856 -70.28 0.0042
2020-11-13 2020-09-30 13F ALLIANT ENERGY COM 018802108 186,026 3,301 1.81 9,611 9.97 0.0163
2020-08-11 2020-06-30 13F ALLIANT ENERGY COM 018802108 182,725 29,549 19.29 8,740 18.19 0.0150
2020-05-15 2020-03-31 13F ALLIANT ENERGY COM 018802108 153,176 -12,127 -7.34 7,395 -18.25 0.0152
2020-03-18 2019-12-31 13F/A-2 ALLIANT ENERGY COM 018802108 165,303 2,286 1.40 9,046 2.87 0.0129
2020-02-28 2019-12-31 13F/A-1 ALLIANT ENERGY COM 018802108 165,303 0 9,046 0.0131
2020-02-14 2019-12-31 13F ALLIANT ENERGY COM 018802108 165,303 2,286 9,046 11,351.9634
2019-11-14 2019-09-30 13F ALLIANT ENERGY COM 018802108 163,017 -11,625 -6.66 8,794 2.60 0.0147
2019-11-06 2019-06-30 13F/A-2 ALLIANT ENERGY COM 018802108 174,642 3,100 1.81 8,571 6.02 0.0145
2019-09-24 2019-06-30 13F/A-1 ALLIANT ENERGY COM 018802108 174,642 0 8,571 0.0146
2019-08-14 2019-06-30 13F ALLIANT ENERGY COM 018802108 174,642 3,100 8,571
2019-05-15 2019-03-31 13F ALLIANT ENERGY COM 018802108 171,542 8,075 4.94 8,084 17.04 0.0138
2019-02-15 2018-12-31 13F ALLIANT ENERGY COM 018802108 163,467 -27,475 -14.39 6,907 -15.02 0.0133
2018-11-15 2018-09-30 13F ALLIANT ENERGY COM 018802108 190,942 35,680 22.98 8,128 23.70 0.0132
2019-03-21 2018-06-30 13F/A-1 ALLIANT ENERGY COM 018802108 155,262 10,130 6.98 6,571 10.81 0.0113
2018-08-14 2018-06-30 13F ALLIANT ENERGY COM 018802108 155,262 10,130 6,571
2018-05-11 2018-03-31 13F ALLIANT ENERGY COM 018802108 145,132 -20,700 -12.48 5,930 -13.51 0.0108
2018-02-14 2017-12-31 13F ALLIANT ENERGY COM 018802108 165,832 3,500 2.16 6,856 1.60 0.0121
2017-11-08 2017-09-30 13F ALLIANT ENERGY COM 018802108 162,332 -5,600 -3.33 6,748 0.03 0.0121
2017-08-14 2017-06-30 13F ALLIANT ENERGY COM 018802108 167,932 -7,400 -4.22 6,746 -2.85 0.0123
2017-05-15 2017-03-31 13F Alliant Energy COM 018802108 175,332 -13,000 -6.90 6,944 -2.69 0.0126
2017-03-30 2016-12-31 13F/A-1 Alliant Energy COMMON 018802108 188,332 2,900 1.56 7,136 0.45 0.0137
2017-02-15 2016-12-31 13F Alliant Energy Common Stock 018802108 188,332 7,136
2016-11-15 2016-09-30 13F Alliant Energy Common Stock 018802108 185,432 10,000 5.70 7,104 2.00 0.0137
2016-09-14 2016-06-30 13F/A-1 Alliant Energy Common Stock 018802108 175,432 85,716 95.54 6,965 4.50 0.0137
2016-08-15 2016-06-30 13F Alliant Energy Common Stock 018802108 175,432 6,965
2016-05-16 2016-03-31 13F Alliant Energy Common Stock 018802108 89,716 55,416 161.56 6,665 211.16 0.0134
2016-02-16 2015-12-31 13F Alliant Energy Common Stock 018802108 34,300 -1,100 -3.11 2,142 3.43 0.0044
2015-11-16 2015-09-30 13F Alliant Energy Common Stock 018802108 35,400 -2,600 -6.84 2,071 -5.56 0.0044
2015-08-21 2015-06-30 13F/A-1 Alliant Energy Common Stock 018802108 38,000 0 0.00 2,193 -8.40 0.0043
2015-08-14 2015-06-30 13F Alliant Energy Common Stock 018802108 38,000 2,193
2015-05-18 2015-03-31 13F Alliant Energy Common Stock 018802108 38,000 2,400 6.74 2,394 2.05 0.0047
2015-02-17 2014-12-31 13F Alliant Energy Common Stock 018802108 35,600 4,200 13.38 2,346 34.83 0.0048
2014-11-14 2014-09-30 13F Alliant Energy Common Stock 018802108 31,400 4,200 15.44 1,740 5.14 0.0037
2014-08-14 2014-06-30 13F Alliant Energy Common 018802108 27,200 -1,100 -3.89 1,655 2.92 0.0037
2014-05-15 2014-03-31 13F Alliant Energy Common Stock 018802108 28,300 -2,100 -6.91 1,608 2.49 0.0028
2014-02-14 2013-12-31 13F Alliant Energy Common Stock 018802108 30,400 6,200 25.62 1,569 30.86 0.0028
2013-11-14 2013-09-30 13F Alliant Energy Common Stock 018802108 24,200 800 3.42 1,199 1.61 0.0023
2013-08-16 2013-06-30 13F/A-1 Alliant Energy Common Stock 018802108 23,400 23,400 1,180 0.0026
2013-08-14 2013-06-30 13F Alliant Energy Common Stock 018802108 23,400 1,180 0.0026
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.