ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

STATE OF WISCONSIN INVESTMENT BOARD's Holding History (CIK: 0000854157)

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

Q4 2025
Shares 250,692 Value ($000) $16,297 Avg Close $66.83 Range $64.30 - $69.59
Q3 2025
Shares 241,986 Value ($000) $16,312 Avg Close $63.88 Range $59.07 - $67.04
Q2 2025
Shares 247,245 Value ($000) $14,951 Avg Close $60.10 Range $55.76 - $64.19
Q1 2025
Shares 217,054 Value ($000) $13,967 Avg Close $59.57 Range $54.52 - $64.99
Q4 2024
Shares 191,822 Value ($000) $11,344 Avg Close $58.37 Range $54.30 - $62.16
Q3 2024
Shares 172,095 Value ($000) $10,444 Avg Close $54.38 Range $48.12 - $58.63
Q2 2024
Shares 167,907 Value ($000) $8,546 Avg Close $47.71 Range $44.54 - $49.81
Q1 2024
Shares 167,878 Value ($000) $8,461 Avg Close $46.11 Range $44.14 - $48.90
Q4 2023
Shares 156,694 Value ($000) $8,038 Avg Close $46.45 Range $41.77 - $50.29
Q3 2023
Shares 156,059 Value ($000) $7,561 Avg Close $47.84 Range $44.23 - $51.62
Q2 2023
Shares 145,780 Value ($000) $7,651 Avg Close $49.05 Range $46.13 - $51.23
Q1 2023
Shares 147,466 Value ($000) $7,875 Avg Close $48.28 Range $45.19 - $50.77
Q4 2022
Shares 141,474 Value ($000) $7,811 Avg Close $48.07 Range $42.22 - $51.90
Q3 2022
Shares 158,036 Value ($000) $8,374 Avg Close $53.87 Range $47.25 - $57.82
Q2 2022
Shares 191,098 Value ($000) $11,200 Avg Close $53.50 Range $48.14 - $57.66
Q1 2022
Shares 187,694 Value ($000) $11,727 Avg Close $52.37 Range $48.33 - $55.78
Q4 2021
Shares 188,168 Value ($000) $11,567 Avg Close $50.05 Range $47.35 - $54.07
Q3 2021
Shares 190,117 Value ($000) $10,643 Avg Close $51.28 Range $47.64 - $54.21
Q2 2021
Shares 180,428 Value ($000) $10,061 Avg Close $48.83 Range $45.94 - $51.03
Q1 2021
Shares 181,370 Value ($000) $9,823 Avg Close $42.55 Range $39.42 - $47.06
Q4 2020
Shares 175,410 Value ($000) $9,039 Avg Close $45.61 Range $40.48 - $49.39
Q3 2020
Shares 187,980 Value ($000) $9,709 Avg Close $44.02 Range $39.84 - $46.94
Q2 2020
Shares 185,060 Value ($000) $8,853 Avg Close $40.72 Range $36.29 - $45.31
Q1 2020
Shares 173,070 Value ($000) $8,358 Avg Close $45.48 Range $31.34 - $50.16
Q4 2019
Shares 205,604 Value ($000) $11,251 Avg Close $43.82 Range $42.11 - $45.80
Q3 2019
Shares 207,295 Value ($000) $11,179 Avg Close $42.08 Range $39.53 - $44.83
Q2 2019
Shares 201,489 Value ($000) $9,889 Avg Close $38.79 Range $37.00 - $40.91
Q1 2019
Shares 237,800 Value ($000) $11,208 Avg Close $36.14 Range $32.70 - $38.77
Q4 2018
Shares 235,960 Value ($000) $9,969 Avg Close $35.19 Range $32.65 - $37.38
Q3 2018
Shares 140,240 Value ($000) $5,970 Avg Close $34.13 Range $32.72 - $35.18
Q2 2018
Shares 129,063 Value ($000) $5,462 Avg Close $32.46 Range $30.20 - $34.35
Q1 2018
Shares 201,818 Value ($000) $8,246 Avg Close $30.84 Range $28.88 - $33.21
Q4 2017
Shares 90,666 Value ($000) $3,863 Avg Close $33.80 Range $31.68 - $35.41
Q3 2017
Shares 91,899 Value ($000) $3,820 Avg Close $32.04 Range $30.14 - $33.72
Q2 2017
Shares 87,642 Value ($000) $3,521 Avg Close $30.93 Range $29.83 - $32.31
Q1 2017
Shares 44,462 Value ($000) $1,761 Avg Close $29.08 Range $27.58 - $30.63
Q4 2016
Shares 19,582 Value ($000) $742 Avg Close $27.74 Range $26.27 - $29.13
Q3 2016
Shares 41,068 Value ($000) $1,573 Avg Close $29.26 Range $27.72 - $30.41
Q2 2016
Shares 46,768 Value ($000) $1,857 Avg Close $27.46 Range $25.25 - $29.85
Q1 2016
Shares 34,904 Value ($000) $2,593 Avg Close $24.74 Range $22.13 - $27.34
Q4 2015
Shares 83,634 Value ($000) $5,223 Avg Close $21.84 Range $20.45 - $23.41
Q3 2015
Shares 193,707 Value ($000) $11,330 Avg Close $21.20 Range $19.59 - $22.72
Q1 2014
Shares 79,294 Value ($000) $4,505 Avg Close $18.07 Range $16.97 - $19.54
Q4 2013
Shares 79,154 Value ($000) $4,084 Avg Close $17.48 Range $16.43 - $18.23
Q3 2013
Shares 81,564 Value ($000) $4,041 Avg Close $17.15 Range $16.21 - $18.15
Q2 2013
Shares 67,534 Value ($000) $3,405 Avg Close $16.89 Range $15.60 - $17.85