Alliant Energy Corporation
DE ˙ DB ˙ US0188021085
60,38 € ↓ -0,15 (-0,25%)
2026-06-04
AKTIENPREIS
SecurityDE:AY1 / Alliant Energy Corporation
InstitutionStifel Financial Corp
Latest Disclosed Ownership180,920 shares
Latest Disclosed Value $ 12,982,785
Stifel Financial Corp reports 0.26% decrease in ownership of AY1 / Alliant Energy Corporation

On May 12, 2026 - Stifel Financial Corp filed a 13F-HR form disclosing ownership of 180,920 shares of Alliant Energy Corporation (DE:AY1) valued at $11,307,500 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 181,387 shares of Alliant Energy Corporation. This represents a change in shares of -0.26% during the quarter. The current value of the position is $10,923,950 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)
2026-05-12 2026-03-31 13F ALLIANT ENERGY COM 018802108 180,920 -467 -0.26 12,983 10.10 0.0119
2026-02-13 2025-12-31 13F ALLIANT ENERGY COM 018802108 181,387 -398 -0.22 11,792 -3.78 0.0106
2025-11-12 2025-09-30 13F ALLIANT ENERGY COM 018802108 181,785 -2,952 -1.60 12,254 9.69 0.0112
2025-08-14 2025-06-30 13F ALLIANT ENERGY COM 018802108 184,737 57,998 45.76 11,171 36.98 0.0109
2025-05-14 2025-03-31 13F ALLIANT ENERGY COM 018802108 126,739 2,261 1.82 8,156 10.79 0.0087
2025-02-13 2024-12-31 13F ALLIANT ENERGY COM 018802108 124,478 5,896 4.97 7,362 2.29 0.0077
2024-11-14 2024-09-30 13F ALLIANT ENERGY COM 018802108 118,582 19,807 20.05 7,197 43.15 0.0075
2024-08-13 2024-06-30 13F ALLIANT ENERGY COM 018802108 98,775 70,169 245.29 5,028 248.85 0.0057
2024-05-14 2024-03-31 13F ALLIANT ENERGY COM 018802108 28,606 -29,131 -50.45 1,442 -51.33 0.0016
2024-02-12 2023-12-31 13F ALLIANT ENERGY COM 018802108 57,737 -3,130 -5.14 2,962 0.44 0.0037
2023-11-13 2023-09-30 13F ALLIANT ENERGY COM 018802108 60,867 -5,644 -8.49 2,949 -15.53 0.0041
2023-08-14 2023-06-30 13F ALLIANT ENERGY COM 018802108 66,511 -1,041 -1.54 3,490 -3.24 0.0048
2023-05-12 2023-03-31 13F ALLIANT ENERGY COM 018802108 67,552 7,061 11.67 3,607 8.03 0.0052
2023-02-13 2022-12-31 13F ALLIANT ENERGY COM 018802108 60,491 -1,977 -3.16 3,340 0.88 0.0050
2022-11-14 2022-09-30 13F ALLIANT ENERGY COM 018802108 62,468 -13,508 -17.78 3,310 -25.67 0.0054
2022-08-15 2022-06-30 13F ALLIANT ENERGY COM 018802108 75,976 839 1.12 4,453 -5.15 0.0070
2022-05-13 2022-03-31 13F ALLIANT ENERGY COM 018802108 75,137 -731 -0.96 4,695 0.69 0.0064
2022-02-14 2021-12-31 13F ALLIANT ENERGY COM 018802108 75,868 -4,544 -5.65 4,663 3.60 0.0062
2021-11-15 2021-09-30 13F ALLIANT ENERGY COM 018802108 80,412 -645 -0.80 4,501 -0.42 0.0066
2021-08-13 2021-06-30 13F ALLIANT ENERGY COM 018802108 81,057 -1,536 -1.86 4,520 1.03 0.0068
2021-05-14 2021-03-31 13F ALLIANT ENERGY COM 018802108 82,593 20,963 34.01 4,474 40.87 0.0074
2021-02-12 2020-12-31 13F ALLIANT ENERGY COM 018802108 61,630 18,135 41.69 3,176 41.34 0.0057
2020-11-16 2020-09-30 13F ALLIANT ENERGY COM 018802108 43,495 -14,015 -24.37 2,247 -18.35 0.0046
2020-08-14 2020-06-30 13F ALLIANT ENERGY COM 018802108 57,510 47,144 454.79 2,752 450.40 0.0063
2020-05-14 2020-03-31 13F ALLIANT ENERGY COM 018802108 10,366 1,022 10.94 500 -2.53 0.0014
2020-02-13 2019-12-31 13F ALLIANT ENERGY COM 018802108 9,344 -5,661 -37.73 513 -36.82 0.0011
2019-11-19 2019-09-30 13F/A-1 ALLIANT ENERGY COM 018802108 15,005 -9,764 -39.42 812 -33.33 0.0021
2019-11-13 2019-09-30 13F ALLIANT ENERGY COM 018802108 15,005 -9,764 812 455.1667
2019-08-14 2019-06-30 13F ALLIANT ENERGY COM 018802108 24,769 9,827 65.77 1,218 73.01 0.0031
2019-05-14 2019-03-31 13F ALLIANT ENERGY COM 018802108 14,942 4,749 46.59 704 63.72 0.0020
2019-02-13 2018-12-31 13F ALLIANT ENERGY COM 018802108 10,193 -5,704 -35.88 430 -36.67 0.0014
2018-11-13 2018-09-30 13F ALLIANT ENERGY COM 018802108 15,897 740 4.88 679 6.09 0.0019
2018-08-14 2018-06-30 13F ALLIANT ENERGY COM 018802108 15,157 4,358 40.36 640 44.80 0.0020
2018-05-11 2018-03-31 13F ALLIANT ENERGY COM 018802108 10,799 2,545 30.83 442 25.93 0.0014
2018-02-14 2017-12-31 13F ALLIANT ENERGY COM 018802108 8,254 -1,013 -10.93 351 -9.07 0.0011
2017-11-13 2017-09-30 13F ALLIANT ENERGY COM 018802108 9,267 542 6.21 386 10.60 0.0013
2017-08-14 2017-06-30 13F ALLIANT ENERGY COM 018802108 8,725 -4,190 -32.44 349 -31.97 0.0013
2017-05-10 2017-03-31 13F ALLIANT ENERGY COM 018802108 12,915 -10,413 -44.64 513 -42.03 0.0020
2017-02-16 2016-12-31 13F ALLIANT ENERGY COM 018802108 23,328 -2,777 -10.64 885 -11.50 0.0038
2016-11-15 2016-09-30 13F ALLIANT ENERGY COM 018802108 26,105 -1,542 -5.58 1,000 -8.93 0.0045
2016-08-17 2016-06-30 13F ALLIANT ENERGY COM 018802108 27,647 3,526 14.62 1,098 -38.73 0.0051
2016-05-16 2016-03-31 13F ALLIANT ENERGY COM 018802108 24,121 -290 -1.19 1,792 17.59 0.0095
2016-03-21 2015-12-31 13F/A-2 ALLIANT ENERGY COM 018802108 24,411 4,402 22.00 1,524 30.26 0.0079
2016-02-26 2015-12-31 13F/A-1 ALLIANT ENERGY COM 018802108 24,411 0 1,524 0.0080
2016-02-16 2015-12-31 13F ALLIANT ENERGY COM 018802108 23,601 1,834
2015-11-16 2015-09-30 13F ALLIANT ENERGY COM 018802108 20,009 471 2.41 1,170 3.72 0.0066
2015-08-17 2015-06-30 13F/A-1 ALLIANT ENERGY COM 018802108 19,538 -7,456 -27.62 1,128 -33.65 0.0058
2015-08-17 2015-06-30 13F ALLIANT ENERGY COM 018802108 19,538 1,128
2015-05-14 2015-03-31 13F ALLIANT ENERGY COM 018802108 26,994 -2,804 -9.41 1,700 -14.01 0.0093
2015-02-13 2014-12-31 13F ALLIANT ENERGY COM 018802108 29,798 -312 -1.04 1,977 18.60 0.0110
2014-11-13 2014-09-30 13F ALLIANT ENERGY COM 018802108 30,110 -4,550 -13.13 1,667 -21.00 0.0146
2014-08-14 2014-06-30 13F ALLIANT ENERGY COM 018802108 34,660 -3,209 -8.47 2,110 -1.95 0.0189
2014-05-15 2014-03-31 13F ALLIANT ENERGY COM 018802108 37,869 37,869 2,152 0.0206
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.