ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

Asset Management One Co., Ltd.'s Holding History (CIK: 0001068855)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 158,077 Value ($000) $10,341 Avg Close $66.83 Range $64.30 - $69.59

Q3 2025

Shares 158,761 Value ($000) $10,702 Avg Close $63.88 Range $59.07 - $67.04

Q2 2025

Shares 153,366 Value ($000) $9,274 Avg Close $60.10 Range $55.76 - $64.19

Q1 2025

Shares 168,981 Value ($000) $10,874 Avg Close $59.57 Range $54.52 - $64.99

Q4 2024

Shares 160,848 Value ($000) $9,577 Avg Close $58.37 Range $54.30 - $62.16

Q3 2024

Shares 159,552 Value ($000) $9,683 Avg Close $54.38 Range $48.12 - $58.63

Q2 2024

Shares 155,435 Value ($000) $7,912 Avg Close $47.71 Range $44.54 - $49.81

Q1 2024

Shares 165,527 Value ($000) $8,343 Avg Close $46.11 Range $44.14 - $48.90

Q4 2023

Shares 170,948 Value ($000) $8,773 Avg Close $46.45 Range $41.77 - $50.29

Q3 2023

Shares 170,951 Value ($000) $8,283 Avg Close $47.84 Range $44.23 - $51.62

Q2 2023

Shares 173,396 Value ($000) $9,100 Avg Close $49.05 Range $46.13 - $51.23

Q1 2023

Shares 171,396 Value ($000) $9,153 Avg Close $48.28 Range $45.19 - $50.77

Q4 2022

Shares 164,778 Value ($000) $9,230 Avg Close $48.07 Range $42.22 - $51.90

Q3 2022

Shares 173,519 Value ($000) $9,194 Avg Close $53.87 Range $47.25 - $57.82

Q2 2022

Shares 174,226 Value ($000) $10,211 Avg Close $53.50 Range $48.14 - $57.66

Q1 2022

Shares 182,306 Value ($000) $11,390 Avg Close $52.37 Range $48.33 - $55.78

Q4 2021

Shares 187,537 Value ($000) $11,461 Avg Close $50.05 Range $47.35 - $54.07

Q3 2021

Shares 182,415 Value ($000) $10,211 Avg Close $51.28 Range $47.64 - $54.21

Q2 2021

Shares 201,723 Value ($000) $11,248 Avg Close $48.83 Range $45.94 - $51.03

Q1 2021

Shares 201,950 Value ($000) $10,937 Avg Close $42.55 Range $39.42 - $47.06

Q4 2020

Shares 193,339 Value ($000) $9,764 Avg Close $45.61 Range $40.48 - $49.39

Q3 2020

Shares 192,197 Value ($000) $9,928 Avg Close $44.02 Range $39.84 - $46.94

Q2 2020

Shares 194,433 Value ($000) $9,302 Avg Close $40.72 Range $36.29 - $45.31

Q1 2020

Shares 206,615 Value ($000) $9,980 Avg Close $45.48 Range $31.34 - $50.16

Q4 2019

Shares 219,765 Value ($000) $12,026 Avg Close $43.82 Range $42.11 - $45.80

Q3 2019

Shares 227,445 Value ($000) $12,268 Avg Close $42.08 Range $39.53 - $44.83

Q2 2019

Shares 221,469 Value ($000) $10,868 Avg Close $38.79 Range $37.00 - $40.91

Q1 2019

Shares 218,691 Value ($000) $10,308 Avg Close $36.14 Range $32.70 - $38.77

Q4 2018

Shares 447,177 Value ($000) $18,886 Avg Close $35.19 Range $32.65 - $37.38

Q3 2018

Shares 440,068 Value ($000) $18,724 Avg Close $34.13 Range $32.72 - $35.18

Q2 2018

Shares 450,403 Value ($000) $19,062 Avg Close $32.46 Range $30.20 - $34.35

Q1 2018

Shares 432,915 Value ($000) $17,689 Avg Close $30.84 Range $28.88 - $33.21

Q4 2017

Shares 429,509 Value ($000) $18,302 Avg Close $33.80 Range $31.68 - $35.41

Q3 2017

Shares 435,167 Value ($000) $18,092 Avg Close $32.04 Range $30.14 - $33.72

Q2 2017

Shares 432,083 Value ($000) $17,362 Avg Close $30.93 Range $29.83 - $32.31

Q1 2017

Shares 422,011 Value ($000) $16,715 Avg Close $29.08 Range $27.58 - $30.63

Q4 2016

Shares 451,388 Value ($000) $17,111 Avg Close $27.74 Range $26.27 - $29.13

Q3 2016

Shares 19,511 Value ($000) $756 Avg Close $29.26 Range $27.72 - $30.41

Q2 2016

Shares 83,073 Value ($000) $3,307 Avg Close $27.46 Range $25.25 - $29.85

Q1 2016

Shares 38,263 Value ($000) $2,827 Avg Close $24.74 Range $22.13 - $27.34

Q4 2015

Shares 34,638 Value ($000) $2,194 Avg Close $21.84 Range $20.45 - $23.41

Q3 2015

Shares 12,173 Value ($000) $703 Avg Close $21.20 Range $19.59 - $22.72

Q2 2015

Shares 12,173 Value ($000) $700 Avg Close $21.63 Range $20.41 - $22.74

Q1 2015

Shares 41,906 Value ($000) $2,623 Avg Close $23.04 Range $21.25 - $25.01

Q4 2014

Shares 48,828 Value ($000) $3,380 Avg Close $21.73 Range $19.32 - $24.55

Q3 2014

Shares 12,173 Value ($000) $674 Avg Close $20.07 Range $19.08 - $21.06

Q2 2014

Shares 12,173 Value ($000) $732 Avg Close $19.98 Range $19.02 - $21.06

Q1 2014

Shares 12,343 Value ($000) $692 Avg Close $18.07 Range $16.97 - $19.54

Q4 2013

Shares 23,843 Value ($000) $1,230 Avg Close $17.48 Range $16.43 - $18.23

Q3 2013

Shares 23,973 Value ($000) $1,188 Avg Close $17.15 Range $16.21 - $18.15

Q2 2013

Shares 29,603 Value ($000) $1,485 Avg Close $16.89 Range $15.60 - $17.85

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	158,077	$10,341	$66.83	$64.30 - $69.59
Q3 2025	158,761	$10,702	$63.88	$59.07 - $67.04
Q2 2025	153,366	$9,274	$60.10	$55.76 - $64.19
Q1 2025	168,981	$10,874	$59.57	$54.52 - $64.99
Q4 2024	160,848	$9,577	$58.37	$54.30 - $62.16
Q3 2024	159,552	$9,683	$54.38	$48.12 - $58.63
Q2 2024	155,435	$7,912	$47.71	$44.54 - $49.81
Q1 2024	165,527	$8,343	$46.11	$44.14 - $48.90
Q4 2023	170,948	$8,773	$46.45	$41.77 - $50.29
Q3 2023	170,951	$8,283	$47.84	$44.23 - $51.62
Q2 2023	173,396	$9,100	$49.05	$46.13 - $51.23
Q1 2023	171,396	$9,153	$48.28	$45.19 - $50.77
Q4 2022	164,778	$9,230	$48.07	$42.22 - $51.90
Q3 2022	173,519	$9,194	$53.87	$47.25 - $57.82
Q2 2022	174,226	$10,211	$53.50	$48.14 - $57.66
Q1 2022	182,306	$11,390	$52.37	$48.33 - $55.78
Q4 2021	187,537	$11,461	$50.05	$47.35 - $54.07
Q3 2021	182,415	$10,211	$51.28	$47.64 - $54.21
Q2 2021	201,723	$11,248	$48.83	$45.94 - $51.03
Q1 2021	201,950	$10,937	$42.55	$39.42 - $47.06
Q4 2020	193,339	$9,764	$45.61	$40.48 - $49.39
Q3 2020	192,197	$9,928	$44.02	$39.84 - $46.94
Q2 2020	194,433	$9,302	$40.72	$36.29 - $45.31
Q1 2020	206,615	$9,980	$45.48	$31.34 - $50.16
Q4 2019	219,765	$12,026	$43.82	$42.11 - $45.80
Q3 2019	227,445	$12,268	$42.08	$39.53 - $44.83
Q2 2019	221,469	$10,868	$38.79	$37.00 - $40.91
Q1 2019	218,691	$10,308	$36.14	$32.70 - $38.77
Q4 2018	447,177	$18,886	$35.19	$32.65 - $37.38
Q3 2018	440,068	$18,724	$34.13	$32.72 - $35.18
Q2 2018	450,403	$19,062	$32.46	$30.20 - $34.35
Q1 2018	432,915	$17,689	$30.84	$28.88 - $33.21
Q4 2017	429,509	$18,302	$33.80	$31.68 - $35.41
Q3 2017	435,167	$18,092	$32.04	$30.14 - $33.72
Q2 2017	432,083	$17,362	$30.93	$29.83 - $32.31
Q1 2017	422,011	$16,715	$29.08	$27.58 - $30.63
Q4 2016	451,388	$17,111	$27.74	$26.27 - $29.13
Q3 2016	19,511	$756	$29.26	$27.72 - $30.41
Q2 2016	83,073	$3,307	$27.46	$25.25 - $29.85
Q1 2016	38,263	$2,827	$24.74	$22.13 - $27.34
Q4 2015	34,638	$2,194	$21.84	$20.45 - $23.41
Q3 2015	12,173	$703	$21.20	$19.59 - $22.72
Q2 2015	12,173	$700	$21.63	$20.41 - $22.74
Q1 2015	41,906	$2,623	$23.04	$21.25 - $25.01
Q4 2014	48,828	$3,380	$21.73	$19.32 - $24.55
Q3 2014	12,173	$674	$20.07	$19.08 - $21.06
Q2 2014	12,173	$732	$19.98	$19.02 - $21.06
Q1 2014	12,343	$692	$18.07	$16.97 - $19.54
Q4 2013	23,843	$1,230	$17.48	$16.43 - $18.23
Q3 2013	23,973	$1,188	$17.15	$16.21 - $18.15
Q2 2013	29,603	$1,485	$16.89	$15.60 - $17.85