얼라이언트 에너지 코퍼레이션
DE ˙ DB ˙ US0188021085
€60.38 ↓ -0.15 (-0.25%)
2026-06-04
주가
SecurityDE:AY1 / Alliant Energy Corporation
InstitutionBlackRock, Inc.
Latest Disclosed Ownership23,143,382 shares
Ownership 9.10%
BlackRock, Inc. ownership in AY1 / Alliant Energy Corporation

2024-01-24 - BlackRock, Inc. has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 23,143,382 shares of Alliant Energy Corporation (DE:AY1). This represents 9.1 percent ownership of the company. In their previous filing dated 2023-01-27 , BlackRock, Inc. had reported owning 22,703,583 shares, indicating an increase of 1.94 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2024-01-24 2024-01-24 13G/A 22,703,583 23,143,382 1.94 9.10 1.11
2023-01-27 2023-01-27 13G/A 22,703,583 22,703,583 0.00 9.00 0.00
2023-01-25 2023-01-25 13G/A 27,301,825 22,703,583 -16.84 9.00 -17.43
2022-01-27 2022-01-27 13G/A 27,301,825 27,301,825 0.00 10.90 0.00
2022-01-25 2022-01-25 13G/A 20,097,020 27,301,825 35.85 10.90 36.25
2021-01-29 2021-01-29 13G/A 23,173,142 20,097,020 -13.27 8.00 -16.67
2021-01-29 2021-01-29 13G/A 20,097,020 20,097,020 0.00 8.00 0.00
2020-02-05 2020-02-05 13G/A 22,875,576 23,173,142 1.30 9.60 -1.03
2019-02-04 2019-02-04 13G/A 18,971,645 22,875,576 20.58 9.70 18.29
2018-02-08 2018-02-08 13G/A 20,757,445 18,971,645 -8.60 8.20 -9.89
2017-01-19 2017-01-19 13G/A 11,906,180 20,757,445 74.34 9.10 -13.33
2016-01-08 2016-01-08 13G/A 11,906,180 10.50
2015-01-09 2015-01-09 13G/A 11,552,624 10.40
2014-02-07 2014-02-07 13G/A 11,285,235 10.20
2014-01-31 2014-01-31 13G/A 11,070,398 9.98
2013-02-01 2013-02-01 13G/A 9,740,268 8.78
2012-02-09 2012-02-09 13G/A 10,243,616 9.23

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-05-13 2026-03-31 13F ALLIANT ENERGY COM 018802108 24,499,440 173,544 0.71 1,758,080 11.17 0.0307
2026-02-12 2025-12-31 13F ALLIANT ENERGY COM 018802108 24,325,896 293,926 1.22 1,581,427 -2.38 0.0267
2025-11-12 2025-09-30 13F ALLIANT ENERGY COM 018802108 24,031,970 254,124 1.07 1,619,995 12.67 0.0284
2025-08-12 2025-06-30 13F ALLIANT ENERGY COM 018802108 23,777,846 178,519 0.76 1,437,846 -5.32 0.0274
2025-05-02 2025-03-31 13F ALLIANT ENERGY COM 018802108 23,599,327 -978,766 -3.98 1,518,617 4.48 0.0319
2025-02-07 2024-12-31 13F ALLIANT ENERGY COM 018802108 24,578,093 1,494,721 6.48 1,453,548 3.76 0.0294
2024-11-13 2024-09-30 13F ALLIANT ENERGY COM 018802108 23,083,372 -431,800 -1.84 1,400,930 17.04 0.0294
2024-08-13 2024-06-30 13F ALLIANT ENERGY COM 018802108 23,515,172 -40,635 -0.17 1,196,922 0.82 0.0271
2024-05-10 2024-03-31 13F ALLIANT ENERGY COM 018802108 23,555,807 475,827 2.06 1,187,213 0.27 0.0276
2024-02-13 2023-12-31 13F ALLIANT ENERGY COM 018802108 23,079,980 490,034 2.17 1,184,003 8.18 0.0302
2023-11-13 2023-09-30 13F ALLIANT ENERGY COM 018802108 22,589,946 -405,341 -1.76 1,094,483 -9.31 0.0315
2023-08-11 2023-06-30 13F ALLIANT ENERGY COM 018802108 22,995,287 -508,718 -2.16 1,206,793 -3.85 0.0333
2023-05-12 2023-03-31 13F ALLIANT ENERGY COM 018802108 23,504,005 799,601 3.52 1,255,114 0.13 0.0370
2023-02-13 2022-12-31 13F ALLIANT ENERGY COM 018802108 22,704,404 901,602 4.14 1,253,510 8.50 0.0393
2022-11-14 2022-09-30 13F ALLIANT ENERGY COM 018802108 21,802,802 145,886 0.67 1,155,329 -8.98 0.0393
2022-08-12 2022-06-30 13F ALLIANT ENERGY COM 018802108 21,656,916 -4,712,442 -17.87 1,269,314 -22.96 0.0407
2022-05-12 2022-03-31 13F ALLIANT ENERGY COM 018802108 26,369,358 -932,467 -3.42 1,647,557 -1.83 0.0444
2022-02-10 2021-12-31 13F ALLIANT ENERGY COM 018802108 27,301,825 1,374,318 5.30 1,678,241 15.63 0.0427
2021-11-09 2021-09-30 13F ALLIANT ENERGY COM 018802108 25,927,507 173,898 0.68 1,451,424 1.07 0.0406
2021-08-11 2021-06-30 13F ALLIANT ENERGY COM 018802108 25,753,609 4,575,097 21.60 1,436,021 25.19 0.0400
2021-05-07 2021-03-31 13F ALLIANT ENERGY COM 018802108 21,178,512 1,081,492 5.38 1,147,029 10.76 0.0337
2021-02-05 2020-12-31 13F ALLIANT ENERGY COM 018802108 20,097,020 -172,991 -0.85 1,035,600 -1.08 0.0330
2020-11-06 2020-09-30 13F ALLIANT ENERGY COM 018802108 20,270,011 -451,588 -2.18 1,046,944 5.61 0.0386
2020-08-14 2020-06-30 13F ALLIANT ENERGY COM 018802108 20,721,599 -1,749,658 -7.79 991,319 -8.65 0.0396
2020-05-01 2020-03-31 13F ALLIANT ENERGY COM 018802108 22,471,257 -701,885 -3.03 1,085,134 -14.42 0.0531
2020-02-13 2019-12-31 13F ALLIANT ENERGY COM 018802108 23,173,142 916,402 4.12 1,268,033 5.64 0.0486
2019-11-08 2019-09-30 13F ALLIANT ENERGY COM 018802108 22,256,740 351,425 1.60 1,200,307 11.64 0.0504
2019-08-22 2019-06-30 13F/A-1 ALLIANT ENERGY COM 018802108 21,905,315 991,604 4.74 1,075,113 9.07 0.0460
2019-08-13 2019-06-30 13F ALLIANT ENERGY COM 018802108 21,905,315 991,604 1,075,113
2019-05-09 2019-03-31 13F ALLIANT ENERGY COM 018802108 20,913,711 -1,961,865 -8.58 985,664 1.98 0.0440
2019-02-08 2018-12-31 13F ALLIANT ENERGY COM 018802108 22,875,576 1,214,401 5.61 966,492 4.81 0.0488
2018-11-09 2018-09-30 13F ALLIANT ENERGY COM 018802108 21,661,175 45,915 0.21 922,115 0.80 0.0399
2018-08-09 2018-06-30 13F ALLIANT ENERGY COM 018802108 21,615,260 140,957 0.66 914,758 4.25 0.0421
2018-05-09 2018-03-31 13F ALLIANT ENERGY COM 018802108 21,474,303 2,502,658 13.19 877,438 8.54 0.0419
2018-02-09 2017-12-31 13F ALLIANT ENERGY COM 018802108 18,971,645 611,677 3.33 808,383 5.92 0.0385
2017-11-14 2017-09-30 13F ALLIANT ENERGY COM 018802108 18,359,968 368,792 2.05 763,223 5.61 0.0385
2017-08-10 2017-06-30 13F ALLIANT ENERGY COM 018802108 17,991,176 -101,729 -0.56 722,705 0.84 0.0383
2017-05-12 2017-03-31 13F ALLIANT ENERGY COM 018802108 18,092,905 17,496,557 2,933.95 716,659 3,071.62 0.0393
2017-02-10 2016-12-31 13F ALLIANT ENERGY COM 018802108 596,348 48,909 8.93 22,596 7.74 0.0320
2016-11-08 2016-09-30 13F ALLIANT ENERGY COM 018802108 547,439 10,709 2.00 20,972 -1.58 0.0301
2016-08-10 2016-06-30 13F ALLIANT ENERGY COM 018802108 536,730 365,283 213.06 21,309 67.33 0.0321
2016-05-10 2016-03-31 13F ALLIANT ENERGY COM 018802108 171,447 21,293 14.18 12,735 35.80 0.0205
2016-02-11 2015-12-31 13F ALLIANT ENERGY COM 018802108 150,154 34,831 30.20 9,378 39.04 0.0138
2015-11-13 2015-09-30 13F ALLIANT ENERGY COM 018802108 115,323 2,714 2.41 6,745 3.77 0.0106
2015-08-07 2015-06-30 13F ALLIANT ENERGY COM 018802108 112,609 -21,937 -16.30 6,500 -23.32 0.0096
2015-05-13 2015-03-31 13F ALLIANT ENERGY COM 018802108 134,546 47,265 54.15 8,477 46.21 0.0117
2015-02-09 2014-12-31 13F ALLIANT ENERGY COM 018802108 87,281 3,198 3.80 5,798 24.42 0.0083
2014-10-29 2014-09-30 13F ALLIANT ENERGY COM 018802108 84,083 -3,782 -4.30 4,660 -12.86 0.0068
2014-08-06 2014-06-30 13F ALLIANT ENERGY COM 018802108 87,865 4,336 5.19 5,348 12.68 0.0080
2014-05-02 2014-03-31 13F ALLIANT ENERGY COM 018802108 83,529 -4,540 -5.16 4,746 4.42 0.0077
2014-02-12 2013-12-31 13F ALLIANT ENERGY COM 018802108 88,069 16,233 22.60 4,545 27.67 0.0074
2013-11-12 2013-09-30 13F ALLIANT ENERGY COM 018802108 71,836 -5,248 -6.81 3,560 -8.39 0.0067
2013-08-13 2013-06-30 13F ALLIANT ENERGY COM 018802108 77,084 77,084 3,886 0.0077
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.