ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

AMERICAN CENTURY COMPANIES INC's Holding History (CIK: 0000748054)

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

Q4 2025

Shares 65,622 Value ($000) $4,266 Avg Close $66.83 Range $64.30 - $69.59

Q3 2025

Shares 57,257 Value ($000) $3,860 Avg Close $63.88 Range $59.07 - $67.04

Q2 2025

Shares 51,164 Value ($000) $3,094 Avg Close $60.10 Range $55.76 - $64.19

Q1 2025

Shares 49,688 Value ($000) $3,197 Avg Close $59.57 Range $54.52 - $64.99

Q4 2024

Shares 59,964 Value ($000) $3,546 Avg Close $58.37 Range $54.30 - $62.16

Q3 2024

Shares 63,420 Value ($000) $3,849 Avg Close $54.38 Range $48.12 - $58.63

Q2 2024

Shares 64,775 Value ($000) $3,297 Avg Close $47.71 Range $44.54 - $49.81

Q1 2024

Shares 66,186 Value ($000) $3,336 Avg Close $46.11 Range $44.14 - $48.90

Q4 2023

Shares 63,198 Value ($000) $3,242 Avg Close $46.45 Range $41.77 - $50.29

Q3 2023

Shares 62,236 Value ($000) $3,015 Avg Close $47.84 Range $44.23 - $51.62

Q2 2023

Shares 54,414 Value ($000) $2,856 Avg Close $49.05 Range $46.13 - $51.23

Q1 2023

Shares 53,795 Value ($000) $2,857 Avg Close $48.28 Range $45.19 - $50.77

Q4 2022

Shares 51,024 Value ($000) $2,817 Avg Close $48.07 Range $42.22 - $51.90

Q3 2022

Shares 36,007 Value ($000) $1,908 Avg Close $53.87 Range $47.25 - $57.82

Q2 2022

Shares 27,232 Value ($000) $1,597 Avg Close $53.50 Range $48.14 - $57.66

Q1 2022

Shares 23,528 Value ($000) $1,470 Avg Close $52.37 Range $48.33 - $55.78

Q4 2021

Shares 25,878 Value ($000) $1,591 Avg Close $50.05 Range $47.35 - $54.07

Q3 2021

Shares 22,709 Value ($000) $1,271 Avg Close $51.28 Range $47.64 - $54.21

Q2 2021

Shares 36,084 Value ($000) $2,012 Avg Close $48.83 Range $45.94 - $51.03

Q1 2021

Shares 107,810 Value ($000) $5,839 Avg Close $42.55 Range $39.42 - $47.06

Q4 2020

Shares 124,135 Value ($000) $6,397 Avg Close $45.61 Range $40.48 - $49.39

Q3 2020

Shares 238,018 Value ($000) $12,294 Avg Close $44.02 Range $39.84 - $46.94

Q2 2020

Shares 232,272 Value ($000) $11,112 Avg Close $40.72 Range $36.29 - $45.31

Q1 2020

Shares 126,317 Value ($000) $6,100 Avg Close $45.48 Range $31.34 - $50.16

Q4 2019

Shares 7,680 Value ($000) $420 Avg Close $43.82 Range $42.11 - $45.80

Q3 2019

Shares 12,505 Value ($000) $674 Avg Close $42.08 Range $39.53 - $44.83

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	65,622	$4,266	$66.83	$64.30 - $69.59
Q3 2025	57,257	$3,860	$63.88	$59.07 - $67.04
Q2 2025	51,164	$3,094	$60.10	$55.76 - $64.19
Q1 2025	49,688	$3,197	$59.57	$54.52 - $64.99
Q4 2024	59,964	$3,546	$58.37	$54.30 - $62.16
Q3 2024	63,420	$3,849	$54.38	$48.12 - $58.63
Q2 2024	64,775	$3,297	$47.71	$44.54 - $49.81
Q1 2024	66,186	$3,336	$46.11	$44.14 - $48.90
Q4 2023	63,198	$3,242	$46.45	$41.77 - $50.29
Q3 2023	62,236	$3,015	$47.84	$44.23 - $51.62
Q2 2023	54,414	$2,856	$49.05	$46.13 - $51.23
Q1 2023	53,795	$2,857	$48.28	$45.19 - $50.77
Q4 2022	51,024	$2,817	$48.07	$42.22 - $51.90
Q3 2022	36,007	$1,908	$53.87	$47.25 - $57.82
Q2 2022	27,232	$1,597	$53.50	$48.14 - $57.66
Q1 2022	23,528	$1,470	$52.37	$48.33 - $55.78
Q4 2021	25,878	$1,591	$50.05	$47.35 - $54.07
Q3 2021	22,709	$1,271	$51.28	$47.64 - $54.21
Q2 2021	36,084	$2,012	$48.83	$45.94 - $51.03
Q1 2021	107,810	$5,839	$42.55	$39.42 - $47.06
Q4 2020	124,135	$6,397	$45.61	$40.48 - $49.39
Q3 2020	238,018	$12,294	$44.02	$39.84 - $46.94
Q2 2020	232,272	$11,112	$40.72	$36.29 - $45.31
Q1 2020	126,317	$6,100	$45.48	$31.34 - $50.16
Q4 2019	7,680	$420	$43.82	$42.11 - $45.80
Q3 2019	12,505	$674	$42.08	$39.53 - $44.83