NASDAQ:LNT | Historical Stock Price | ALLIANT ENERGY CORP

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1973-02-21 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$3.27$9.17$25.74$72.25$202.84$569.441973-02-212026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2018-12-31$42.25$233.151,421,000
2018-12-28$42.05$232.052,441,900
2018-12-27$41.99$231.713,018,700
2018-12-26$41.68$230.002,484,700
2018-12-24$41.21$227.411,241,800
2018-12-21$43.45$239.774,282,600
2018-12-20$43.82$241.813,426,200
2018-12-19$43.72$241.263,250,900
2018-12-18$43.92$242.363,149,500
2018-12-17$44.13$243.523,321,100
2018-12-14$45.32$250.097,159,100
2018-12-13$46.12$254.501,849,200
2018-12-12$45.89$253.241,398,400
2018-12-11$46.28$255.391,300,200
2018-12-10$45.94$253.511,482,100
2018-12-07$45.84$252.961,323,400
2018-12-06$45.72$252.302,235,700
2018-12-04$46.17$254.781,346,500
2018-12-03$45.90$253.291,217,300
2018-11-30$45.39$250.481,889,300
2018-11-29$44.67$246.501,204,800
2018-11-28$44.77$247.061,576,400
2018-11-27$44.79$247.171,408,900
2018-11-26$44.29$244.411,388,300
2018-11-23$43.98$242.70636,800
2018-11-21$44.07$243.191,964,300
2018-11-20$45.26$249.761,250,900
2018-11-19$45.38$250.421,535,000
2018-11-16$45.25$249.701,219,800
2018-11-15$45.12$248.991,791,400
2018-11-14$44.66$246.451,821,600
2018-11-13$45.12$248.992,698,200
2018-11-12$45.19$249.372,003,700
2018-11-09$44.61$246.171,448,400
2018-11-08$43.83$241.871,307,700
2018-11-07$43.83$241.872,145,000
2018-11-06$43.36$239.271,331,000
2018-11-05$42.95$237.011,658,600
2018-11-02$42.47$234.361,850,100
2018-11-01$42.86$236.521,814,300
2018-10-31$42.98$237.182,176,200
2018-10-30$43.51$240.101,974,900
2018-10-29$43.63$238.921,657,500
2018-10-26$42.86$234.702,130,300
2018-10-25$43.52$238.311,873,200
2018-10-24$44.34$242.801,660,800
2018-10-23$43.60$238.751,618,300
2018-10-22$43.67$239.131,103,000
2018-10-19$44.05$241.221,550,600
2018-10-18$43.32$237.221,193,600
2018-10-17$43.23$236.731,232,600
2018-10-16$43.08$235.901,279,200
2018-10-15$42.56$233.061,727,800
2018-10-12$42.46$232.511,586,000
2018-10-11$42.62$233.382,502,800
2018-10-10$43.91$240.451,863,100
2018-10-09$44.10$241.491,674,600
2018-10-08$44.11$241.541,433,000
2018-10-05$43.61$238.811,284,000
2018-10-04$42.77$234.211,158,200
2018-10-03$42.56$233.061,530,100
2018-10-02$43.12$236.121,620,500
2018-10-01$42.41$232.231,760,900
2018-09-28$42.57$233.112,945,100
2018-09-27$42.06$230.322,055,000
2018-09-26$41.78$228.791,280,700
2018-09-25$42.24$231.30837,300
2018-09-24$42.92$235.031,303,200
2018-09-21$43.23$236.732,963,900
2018-09-20$43.12$236.12931,300
2018-09-19$42.84$234.591,370,100
2018-09-18$43.84$240.071,178,600
2018-09-17$43.99$240.89862,900
2018-09-14$43.83$240.011,172,400
2018-09-13$43.90$240.39807,500
2018-09-12$43.59$238.70779,300
2018-09-11$43.60$238.75916,200
2018-09-10$43.78$239.741,084,900
2018-09-07$43.27$236.941,424,900
2018-09-06$43.86$240.181,092,300
2018-09-05$43.73$239.46959,200
2018-09-04$43.09$235.96918,800
2018-08-31$42.84$234.591,276,300
2018-08-30$42.99$235.41862,700
2018-08-29$42.92$235.03715,200
2018-08-28$42.60$233.28825,100
2018-08-27$42.79$234.32698,600
2018-08-24$43.18$236.45825,300
2018-08-23$43.04$235.681,038,200
2018-08-22$42.85$234.64813,600
2018-08-21$43.20$236.56937,600
2018-08-20$43.47$238.041,036,300
2018-08-17$43.59$238.701,136,800
2018-08-16$43.44$237.88880,900
2018-08-15$43.02$235.581,370,400
2018-08-14$42.73$233.991,155,300
2018-08-13$42.72$233.932,276,200
2018-08-10$42.72$233.931,595,700
2018-08-09$42.78$234.261,343,100
2018-08-08$42.47$232.561,885,900
2018-08-07$42.59$233.222,242,800
2018-08-06$42.91$234.971,676,900
2018-08-03$42.76$234.151,803,100
2018-08-02$42.47$232.561,359,400
2018-08-01$42.37$232.021,430,500
2018-07-31$42.97$235.301,322,000
2018-07-30$42.31$231.69872,800
2018-07-27$42.94$233.301,038,200
2018-07-26$43.06$233.951,356,700
2018-07-25$42.12$228.851,079,900
2018-07-24$42.19$229.231,753,700
2018-07-23$42.18$229.17907,200
2018-07-20$42.54$231.131,098,000
2018-07-19$42.96$233.411,696,900
2018-07-18$42.69$231.94762,500
2018-07-17$42.88$232.98805,900
2018-07-16$42.78$232.43724,800
2018-07-13$42.93$233.25882,800
2018-07-12$43.14$234.391,408,100
2018-07-11$43.11$234.231,120,800
2018-07-10$42.55$231.181,622,800
2018-07-09$42.18$229.171,185,600
2018-07-06$43.84$238.191,002,600
2018-07-05$43.41$235.861,166,800
2018-07-03$42.99$233.57670,600
2018-07-02$42.71$232.051,222,600
2018-06-29$42.32$229.931,553,600
2018-06-28$42.36$230.151,219,400
2018-06-27$42.41$230.421,342,700
2018-06-26$42.28$229.721,782,500
2018-06-25$42.26$229.612,735,600
2018-06-22$41.09$223.251,447,700
2018-06-21$40.97$222.601,102,600
2018-06-20$41.05$223.031,298,800
2018-06-19$41.08$223.202,097,500
2018-06-18$40.33$219.121,386,200
2018-06-15$39.96$217.113,015,600
2018-06-14$39.62$215.261,503,500
2018-06-13$39.17$212.822,028,700
2018-06-12$39.05$212.171,252,600
2018-06-11$38.38$208.531,128,900
2018-06-08$39.23$213.15974,900
2018-06-07$39.19$212.931,450,400
2018-06-06$39.13$212.601,626,700
2018-06-05$39.75$215.971,967,100
2018-06-04$40.23$218.581,360,600
2018-06-01$40.63$220.751,415,400
2018-05-31$41.42$225.042,012,500
2018-05-30$41.44$225.152,353,200
2018-05-29$41.00$222.762,773,100
2018-05-25$40.79$221.621,696,000
2018-05-24$40.75$221.402,062,900
2018-05-23$40.49$219.991,917,800
2018-05-22$40.28$218.851,422,300
2018-05-21$40.28$218.852,436,400
2018-05-18$40.57$220.431,760,700
2018-05-17$40.64$220.811,446,400
2018-05-16$40.89$222.161,472,000
2018-05-15$41.05$223.031,493,300
2018-05-14$41.41$224.991,424,200
2018-05-11$41.66$226.35974,600
2018-05-10$41.74$226.781,110,800
2018-05-09$41.26$224.171,663,100
2018-05-08$41.72$226.671,636,800
2018-05-07$42.94$233.301,040,600
2018-05-04$43.27$235.101,599,700
2018-05-03$43.23$234.881,753,400
2018-05-02$42.87$232.921,752,600
2018-05-01$42.82$232.651,234,500
2018-04-30$42.95$233.361,538,900
2018-04-27$43.06$233.951,291,800
2018-04-26$42.86$231.051,489,800
2018-04-25$42.23$227.651,415,000
2018-04-24$42.10$226.951,713,100
2018-04-23$41.69$224.74970,300
2018-04-20$41.54$223.931,673,000
2018-04-19$41.53$223.881,373,500
2018-04-18$41.60$224.262,232,100
2018-04-17$41.85$225.601,476,300
2018-04-16$41.59$224.201,292,800
2018-04-13$41.11$221.611,469,400
2018-04-12$40.52$218.432,068,000
2018-04-11$41.02$221.131,907,100
2018-04-10$40.75$219.672,198,400
2018-04-09$41.05$221.291,684,400
2018-04-06$41.02$221.132,155,300
2018-04-05$41.33$222.802,004,400
2018-04-04$40.92$220.591,759,400
2018-04-03$40.82$220.051,730,800
2018-04-02$40.79$219.892,066,200
2018-03-29$40.86$220.271,485,800
2018-03-28$40.62$218.971,985,800
2018-03-27$40.53$218.491,744,900
2018-03-26$39.84$214.771,284,100
2018-03-23$39.45$212.671,933,900
2018-03-22$39.83$214.711,653,500
2018-03-21$39.66$213.801,150,900
2018-03-20$39.68$213.911,151,000
2018-03-19$39.83$214.711,668,800
2018-03-16$40.13$216.335,792,700
2018-03-15$39.66$213.802,048,200
2018-03-14$39.54$213.151,928,400
2018-03-13$39.30$211.862,350,400
2018-03-12$39.21$211.373,295,700
2018-03-09$38.71$208.681,721,300
2018-03-08$38.32$206.571,028,600
2018-03-07$38.06$205.171,081,200
2018-03-06$38.17$205.771,415,100
2018-03-05$38.93$209.862,390,200
2018-03-02$38.22$206.032,124,200
2018-03-01$38.49$207.492,222,200
2018-02-28$38.65$208.351,929,800
2018-02-27$38.80$209.161,935,100
2018-02-26$39.53$213.101,645,400
2018-02-23$39.42$212.501,959,000
2018-02-22$38.60$208.082,138,200
2018-02-21$38.62$208.191,757,600
2018-02-20$39.14$210.992,616,600
2018-02-16$39.75$214.283,173,200
2018-02-15$39.05$210.511,758,900
2018-02-14$38.11$205.441,924,100
2018-02-13$38.63$208.241,774,000
2018-02-12$38.48$207.442,176,900
2018-02-09$38.42$207.113,225,500
2018-02-08$37.14$200.212,675,000
2018-02-07$37.50$202.151,891,500
2018-02-06$37.51$202.213,223,800
2018-02-05$38.22$206.032,431,300
2018-02-02$38.91$209.751,888,800
2018-02-01$39.08$210.671,502,600
2018-01-31$39.75$214.281,930,600
2018-01-30$39.26$211.641,912,000
2018-01-29$39.61$211.721,284,300
2018-01-26$40.30$215.401,479,900
2018-01-25$40.39$215.891,414,600
2018-01-24$39.85$213.001,076,800
2018-01-23$40.16$214.661,809,900
2018-01-22$39.55$211.401,689,200
2018-01-19$39.41$210.652,040,900
2018-01-18$39.68$212.092,024,200
2018-01-17$40.06$214.122,385,900
2018-01-16$39.56$211.454,681,800
2018-01-12$39.53$211.291,642,800
2018-01-11$39.84$212.951,567,400
2018-01-10$40.19$214.821,785,800
2018-01-09$40.91$218.671,747,400
2018-01-08$41.54$222.031,718,900
2018-01-05$41.08$219.571,665,000
2018-01-04$41.25$220.481,352,500
2018-01-03$41.74$223.101,481,800
2018-01-02$42.11$225.081,392,900