ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

SEI INVESTMENTS CO's Holding History (CIK: 0000350894)

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

Q4 2025

Shares 245,652 Value ($000) $15,970 Avg Close $66.83 Range $64.30 - $69.59

Q3 2025

Shares 194,948 Value ($000) $13,141 Avg Close $63.88 Range $59.07 - $67.04

Q2 2025

Shares 91,645 Value ($000) $5,542 Avg Close $60.10 Range $55.76 - $64.19

Q1 2025

Shares 176,679 Value ($000) $11,369 Avg Close $59.57 Range $54.52 - $64.99

Q4 2024

Shares 275,681 Value ($000) $16,304 Avg Close $58.37 Range $54.30 - $62.16

Q3 2024

Shares 375,205 Value ($000) $22,771 Avg Close $54.38 Range $48.12 - $58.63

Q2 2024

Shares 222,080 Value ($000) $11,304 Avg Close $47.71 Range $44.54 - $49.81

Q1 2024

Shares 91,108 Value ($000) $4,592 Avg Close $46.11 Range $44.14 - $48.90

Q4 2023

Shares 214,079 Value ($000) $10,982 Avg Close $46.45 Range $41.77 - $50.29

Q3 2023

Shares 181,294 Value ($000) $8,784 Avg Close $47.84 Range $44.23 - $51.62

Q2 2023

Shares 183,243 Value ($000) $9,617 Avg Close $49.05 Range $46.13 - $51.23

Q1 2023

Shares 199,457 Value ($000) $10,651 Avg Close $48.28 Range $45.19 - $50.77

Q4 2022

Shares 206,212 Value ($000) $11,385 Avg Close $48.07 Range $42.22 - $51.90

Q3 2022

Shares 273,025 Value ($000) $14,468 Avg Close $53.87 Range $47.25 - $57.82

Q2 2022

Shares 136,290 Value ($000) $7,988 Avg Close $53.50 Range $48.14 - $57.66

Q1 2022

Shares 19,652 Value ($000) $1,228 Avg Close $52.37 Range $48.33 - $55.78

Q4 2021

Shares 88,238 Value ($000) $5,425 Avg Close $50.05 Range $47.35 - $54.07

Q3 2021

Shares 86,664 Value ($000) $4,852 Avg Close $51.28 Range $47.64 - $54.21

Q2 2021

Shares 120,236 Value ($000) $6,704 Avg Close $48.83 Range $45.94 - $51.03

Q1 2021

Shares 198,255 Value ($000) $10,737 Avg Close $42.55 Range $39.42 - $47.06

Q4 2020

Shares 235,840 Value ($000) $12,153 Avg Close $45.61 Range $40.48 - $49.39

Q3 2020

Shares 261,166 Value ($000) $13,489 Avg Close $44.02 Range $39.84 - $46.94

Q2 2020

Shares 215,403 Value ($000) $10,305 Avg Close $40.72 Range $36.29 - $45.31

Q1 2020

Shares 239,050 Value ($000) $11,544 Avg Close $45.48 Range $31.34 - $50.16

Q4 2019

Shares 215,861 Value ($000) $11,812 Avg Close $43.82 Range $42.11 - $45.80

Q3 2019

Shares 238,374 Value ($000) $12,856 Avg Close $42.08 Range $39.53 - $44.83

Q2 2019

Shares 252,160 Value ($000) $12,376 Avg Close $38.79 Range $37.00 - $40.91

Q1 2019

Shares 293,315 Value ($000) $13,824 Avg Close $36.14 Range $32.70 - $38.77

Q4 2018

Shares 211,489 Value ($000) $9,003 Avg Close $35.19 Range $32.65 - $37.38

Q3 2018

Shares 247,501 Value ($000) $10,536 Avg Close $34.13 Range $32.72 - $35.18

Q2 2018

Shares 202,634 Value ($000) $8,575 Avg Close $32.46 Range $30.20 - $34.35

Q1 2018

Shares 12,784 Value ($000) $522 Avg Close $30.84 Range $28.88 - $33.21

Q4 2017

Shares 177,935 Value ($000) $8,577 Avg Close $33.80 Range $31.68 - $35.41

Q3 2017

Shares 207,686 Value ($000) $8,631 Avg Close $32.04 Range $30.14 - $33.72

Q2 2017

Shares 209,135 Value ($000) $8,401 Avg Close $30.93 Range $29.83 - $32.31

Q1 2017

Shares 156,249 Value ($000) $6,189 Avg Close $29.08 Range $27.58 - $30.63

Q4 2016

Shares 134,369 Value ($000) $5,105 Avg Close $27.74 Range $26.27 - $29.13

Q3 2016

Shares 112,871 Value ($000) $4,324 Avg Close $29.26 Range $27.72 - $30.41

Q2 2016

Shares 95,859 Value ($000) $3,806 Avg Close $27.46 Range $25.25 - $29.85

Q1 2016

Shares 53,727 Value ($000) $3,991 Avg Close $24.74 Range $22.13 - $27.34

Q4 2015

Shares 49,633 Value ($000) $3,100 Avg Close $21.84 Range $20.45 - $23.41

Q3 2015

Shares 21,899 Value ($000) $1,282 Avg Close $21.20 Range $19.59 - $22.72

Q2 2015

Shares 23,723 Value ($000) $1,369 Avg Close $21.63 Range $20.41 - $22.74

Q1 2015

Shares 27,444 Value ($000) $1,726 Avg Close $23.04 Range $21.25 - $25.01

Q4 2014

Shares 18,067 Value ($000) $1,199 Avg Close $21.73 Range $19.32 - $24.55

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	245,652	$15,970	$66.83	$64.30 - $69.59
Q3 2025	194,948	$13,141	$63.88	$59.07 - $67.04
Q2 2025	91,645	$5,542	$60.10	$55.76 - $64.19
Q1 2025	176,679	$11,369	$59.57	$54.52 - $64.99
Q4 2024	275,681	$16,304	$58.37	$54.30 - $62.16
Q3 2024	375,205	$22,771	$54.38	$48.12 - $58.63
Q2 2024	222,080	$11,304	$47.71	$44.54 - $49.81
Q1 2024	91,108	$4,592	$46.11	$44.14 - $48.90
Q4 2023	214,079	$10,982	$46.45	$41.77 - $50.29
Q3 2023	181,294	$8,784	$47.84	$44.23 - $51.62
Q2 2023	183,243	$9,617	$49.05	$46.13 - $51.23
Q1 2023	199,457	$10,651	$48.28	$45.19 - $50.77
Q4 2022	206,212	$11,385	$48.07	$42.22 - $51.90
Q3 2022	273,025	$14,468	$53.87	$47.25 - $57.82
Q2 2022	136,290	$7,988	$53.50	$48.14 - $57.66
Q1 2022	19,652	$1,228	$52.37	$48.33 - $55.78
Q4 2021	88,238	$5,425	$50.05	$47.35 - $54.07
Q3 2021	86,664	$4,852	$51.28	$47.64 - $54.21
Q2 2021	120,236	$6,704	$48.83	$45.94 - $51.03
Q1 2021	198,255	$10,737	$42.55	$39.42 - $47.06
Q4 2020	235,840	$12,153	$45.61	$40.48 - $49.39
Q3 2020	261,166	$13,489	$44.02	$39.84 - $46.94
Q2 2020	215,403	$10,305	$40.72	$36.29 - $45.31
Q1 2020	239,050	$11,544	$45.48	$31.34 - $50.16
Q4 2019	215,861	$11,812	$43.82	$42.11 - $45.80
Q3 2019	238,374	$12,856	$42.08	$39.53 - $44.83
Q2 2019	252,160	$12,376	$38.79	$37.00 - $40.91
Q1 2019	293,315	$13,824	$36.14	$32.70 - $38.77
Q4 2018	211,489	$9,003	$35.19	$32.65 - $37.38
Q3 2018	247,501	$10,536	$34.13	$32.72 - $35.18
Q2 2018	202,634	$8,575	$32.46	$30.20 - $34.35
Q1 2018	12,784	$522	$30.84	$28.88 - $33.21
Q4 2017	177,935	$8,577	$33.80	$31.68 - $35.41
Q3 2017	207,686	$8,631	$32.04	$30.14 - $33.72
Q2 2017	209,135	$8,401	$30.93	$29.83 - $32.31
Q1 2017	156,249	$6,189	$29.08	$27.58 - $30.63
Q4 2016	134,369	$5,105	$27.74	$26.27 - $29.13
Q3 2016	112,871	$4,324	$29.26	$27.72 - $30.41
Q2 2016	95,859	$3,806	$27.46	$25.25 - $29.85
Q1 2016	53,727	$3,991	$24.74	$22.13 - $27.34
Q4 2015	49,633	$3,100	$21.84	$20.45 - $23.41
Q3 2015	21,899	$1,282	$21.20	$19.59 - $22.72
Q2 2015	23,723	$1,369	$21.63	$20.41 - $22.74
Q1 2015	27,444	$1,726	$23.04	$21.25 - $25.01
Q4 2014	18,067	$1,199	$21.73	$19.32 - $24.55