ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

HARTFORD INVESTMENT MANAGEMENT CO's Holding History (CIK: 0000922439)

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

Q4 2025

Shares 14,832 Value ($000) $964 Avg Close $66.83 Range $64.30 - $69.59

Q3 2025

Shares 15,172 Value ($000) $1,023 Avg Close $63.88 Range $59.07 - $67.04

Q2 2025

Shares 15,469 Value ($000) $935 Avg Close $60.10 Range $55.76 - $64.19

Q1 2025

Shares 15,600 Value ($000) $1,004 Avg Close $59.57 Range $54.52 - $64.99

Q4 2024

Shares 15,762 Value ($000) $932 Avg Close $58.37 Range $54.30 - $62.16

Q3 2024

Shares 16,067 Value ($000) $975 Avg Close $54.38 Range $48.12 - $58.63

Q2 2024

Shares 16,256 Value ($000) $827 Avg Close $47.71 Range $44.54 - $49.81

Q1 2024

Shares 16,323 Value ($000) $823 Avg Close $46.11 Range $44.14 - $48.90

Q4 2023

Shares 17,222 Value ($000) $883 Avg Close $46.45 Range $41.77 - $50.29

Q3 2023

Shares 17,301 Value ($000) $838 Avg Close $47.84 Range $44.23 - $51.62

Q2 2023

Shares 17,651 Value ($000) $926 Avg Close $49.05 Range $46.13 - $51.23

Q1 2023

Shares 21,204 Value ($000) $1,132 Avg Close $48.28 Range $45.19 - $50.77

Q4 2022

Shares 18,123 Value ($000) $1 Avg Close $48.07 Range $42.22 - $51.90

Q3 2022

Shares 23,915 Value ($000) $1,267 Avg Close $53.87 Range $47.25 - $57.82

Q2 2022

Shares 24,067 Value ($000) $1,411 Avg Close $53.50 Range $48.14 - $57.66

Q1 2022

Shares 23,578 Value ($000) $1,473 Avg Close $52.37 Range $48.33 - $55.78

Q4 2021

Shares 25,392 Value ($000) $1,561 Avg Close $50.05 Range $47.35 - $54.07

Q3 2021

Shares 23,360 Value ($000) $1,308 Avg Close $51.28 Range $47.64 - $54.21

Q2 2021

Shares 26,326 Value ($000) $1,468 Avg Close $48.83 Range $45.94 - $51.03

Q1 2021

Shares 27,166 Value ($000) $1,471 Avg Close $42.55 Range $39.42 - $47.06

Q4 2020

Shares 28,678 Value ($000) $1,478 Avg Close $45.61 Range $40.48 - $49.39

Q3 2020

Shares 26,005 Value ($000) $1,343 Avg Close $44.02 Range $39.84 - $46.94

Q2 2020

Shares 27,182 Value ($000) $1,300 Avg Close $40.72 Range $36.29 - $45.31

Q1 2020

Shares 26,202 Value ($000) $1,265 Avg Close $45.48 Range $31.34 - $50.16

Q4 2019

Shares 26,108 Value ($000) $1,429 Avg Close $43.82 Range $42.11 - $45.80

Q3 2019

Shares 26,258 Value ($000) $1,416 Avg Close $42.08 Range $39.53 - $44.83

Q2 2019

Shares 26,448 Value ($000) $1,298 Avg Close $38.79 Range $37.00 - $40.91

Q1 2019

Shares 26,237 Value ($000) $1,237 Avg Close $36.14 Range $32.70 - $38.77

Q4 2018

Shares 32,837 Value ($000) $1,387 Avg Close $35.19 Range $32.65 - $37.38

Q3 2018

Shares 32,971 Value ($000) $1,404 Avg Close $34.13 Range $32.72 - $35.18

Q2 2018

Shares 33,350 Value ($000) $1,411 Avg Close $32.46 Range $30.20 - $34.35

Q1 2018

Shares 43,735 Value ($000) $1,787 Avg Close $30.84 Range $28.88 - $33.21

Q4 2017

Shares 46,629 Value ($000) $1,987 Avg Close $33.80 Range $31.68 - $35.41

Q3 2017

Shares 48,864 Value ($000) $2,031 Avg Close $32.04 Range $30.14 - $33.72

Q2 2017

Shares 49,988 Value ($000) $2,008 Avg Close $30.93 Range $29.83 - $32.31

Q1 2017

Shares 52,008 Value ($000) $2,060 Avg Close $29.08 Range $27.58 - $30.63

Q4 2016

Shares 55,787 Value ($000) $2,114 Avg Close $27.74 Range $26.27 - $29.13

Q3 2016

Shares 55,559 Value ($000) $2,128 Avg Close $29.26 Range $27.72 - $30.41

Q2 2016

Shares 55,697 Value ($000) $2,211 Avg Close $27.46 Range $25.25 - $29.85

Q4 2014

Shares 3,712 Value ($000) $247 Avg Close $21.73 Range $19.32 - $24.55

Q3 2014

Shares 7,328 Value ($000) $406 Avg Close $20.07 Range $19.08 - $21.06

Q2 2014

Shares 8,742 Value ($000) $532 Avg Close $19.98 Range $19.02 - $21.06

Q1 2014

Shares 10,065 Value ($000) $572 Avg Close $18.07 Range $16.97 - $19.54

Q4 2013

Shares 10,037 Value ($000) $518 Avg Close $17.48 Range $16.43 - $18.23

Q3 2013

Shares 12,264 Value ($000) $608 Avg Close $17.15 Range $16.21 - $18.15

Q2 2013

Shares 12,364 Value ($000) $623 Avg Close $16.89 Range $15.60 - $17.85

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	14,832	$964	$66.83	$64.30 - $69.59
Q3 2025	15,172	$1,023	$63.88	$59.07 - $67.04
Q2 2025	15,469	$935	$60.10	$55.76 - $64.19
Q1 2025	15,600	$1,004	$59.57	$54.52 - $64.99
Q4 2024	15,762	$932	$58.37	$54.30 - $62.16
Q3 2024	16,067	$975	$54.38	$48.12 - $58.63
Q2 2024	16,256	$827	$47.71	$44.54 - $49.81
Q1 2024	16,323	$823	$46.11	$44.14 - $48.90
Q4 2023	17,222	$883	$46.45	$41.77 - $50.29
Q3 2023	17,301	$838	$47.84	$44.23 - $51.62
Q2 2023	17,651	$926	$49.05	$46.13 - $51.23
Q1 2023	21,204	$1,132	$48.28	$45.19 - $50.77
Q4 2022	18,123	$1	$48.07	$42.22 - $51.90
Q3 2022	23,915	$1,267	$53.87	$47.25 - $57.82
Q2 2022	24,067	$1,411	$53.50	$48.14 - $57.66
Q1 2022	23,578	$1,473	$52.37	$48.33 - $55.78
Q4 2021	25,392	$1,561	$50.05	$47.35 - $54.07
Q3 2021	23,360	$1,308	$51.28	$47.64 - $54.21
Q2 2021	26,326	$1,468	$48.83	$45.94 - $51.03
Q1 2021	27,166	$1,471	$42.55	$39.42 - $47.06
Q4 2020	28,678	$1,478	$45.61	$40.48 - $49.39
Q3 2020	26,005	$1,343	$44.02	$39.84 - $46.94
Q2 2020	27,182	$1,300	$40.72	$36.29 - $45.31
Q1 2020	26,202	$1,265	$45.48	$31.34 - $50.16
Q4 2019	26,108	$1,429	$43.82	$42.11 - $45.80
Q3 2019	26,258	$1,416	$42.08	$39.53 - $44.83
Q2 2019	26,448	$1,298	$38.79	$37.00 - $40.91
Q1 2019	26,237	$1,237	$36.14	$32.70 - $38.77
Q4 2018	32,837	$1,387	$35.19	$32.65 - $37.38
Q3 2018	32,971	$1,404	$34.13	$32.72 - $35.18
Q2 2018	33,350	$1,411	$32.46	$30.20 - $34.35
Q1 2018	43,735	$1,787	$30.84	$28.88 - $33.21
Q4 2017	46,629	$1,987	$33.80	$31.68 - $35.41
Q3 2017	48,864	$2,031	$32.04	$30.14 - $33.72
Q2 2017	49,988	$2,008	$30.93	$29.83 - $32.31
Q1 2017	52,008	$2,060	$29.08	$27.58 - $30.63
Q4 2016	55,787	$2,114	$27.74	$26.27 - $29.13
Q3 2016	55,559	$2,128	$29.26	$27.72 - $30.41
Q2 2016	55,697	$2,211	$27.46	$25.25 - $29.85
Q4 2014	3,712	$247	$21.73	$19.32 - $24.55
Q3 2014	7,328	$406	$20.07	$19.08 - $21.06
Q2 2014	8,742	$532	$19.98	$19.02 - $21.06
Q1 2014	10,065	$572	$18.07	$16.97 - $19.54
Q4 2013	10,037	$518	$17.48	$16.43 - $18.23
Q3 2013	12,264	$608	$17.15	$16.21 - $18.15
Q2 2013	12,364	$623	$16.89	$15.60 - $17.85