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.

View year

Historical Stock Price — 2017

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2017-12-29$42.61$227.751,101,300
2017-12-28$42.66$228.021,246,700
2017-12-27$42.42$226.741,008,300
2017-12-26$42.19$225.511,079,500
2017-12-22$42.50$227.161,083,800
2017-12-21$42.32$226.20965,900
2017-12-20$42.51$227.221,152,300
2017-12-19$42.77$228.611,489,100
2017-12-18$43.60$233.041,622,500
2017-12-15$44.43$237.483,155,300
2017-12-14$43.95$234.911,097,600
2017-12-13$44.29$236.731,387,900
2017-12-12$44.01$235.23982,900
2017-12-11$45.08$240.95922,900
2017-12-08$44.94$240.21752,600
2017-12-07$44.64$238.601,081,200
2017-12-06$44.54$238.071,374,800
2017-12-05$44.34$237.001,260,200
2017-12-04$44.69$238.87963,400
2017-12-01$44.83$239.621,500,200
2017-11-30$45.11$241.112,355,200
2017-11-29$44.90$239.991,131,400
2017-11-28$44.78$239.35959,600
2017-11-27$44.61$238.44934,100
2017-11-24$44.22$236.36339,700
2017-11-22$44.19$236.20949,800
2017-11-21$44.15$235.981,291,000
2017-11-20$44.26$236.571,220,300
2017-11-17$44.40$237.323,561,100
2017-11-16$44.63$238.551,204,400
2017-11-15$44.71$238.981,386,000
2017-11-14$45.18$241.491,523,200
2017-11-13$44.30$236.781,757,800
2017-11-10$43.68$233.471,485,500
2017-11-09$44.10$235.72902,500
2017-11-08$44.07$235.561,296,300
2017-11-07$44.17$236.091,063,400
2017-11-06$43.59$232.991,337,200
2017-11-03$43.83$234.272,344,900
2017-11-02$43.06$230.162,169,200
2017-11-01$43.07$230.211,454,500
2017-10-31$43.26$231.231,404,900
2017-10-30$43.18$230.801,277,800
2017-10-27$43.75$232.16914,300
2017-10-26$43.38$230.201,020,500
2017-10-25$43.25$229.511,438,800
2017-10-24$43.48$230.731,167,800
2017-10-23$43.77$232.27783,800
2017-10-20$43.87$232.80871,600
2017-10-19$43.85$232.69939,900
2017-10-18$43.38$230.201,014,000
2017-10-17$43.44$230.52985,000
2017-10-16$43.12$228.821,061,600
2017-10-13$43.05$228.451,690,000
2017-10-12$43.01$228.231,483,900
2017-10-11$42.66$226.381,687,000
2017-10-10$42.34$224.68870,500
2017-10-09$41.99$222.821,748,700
2017-10-06$41.92$222.451,453,400
2017-10-05$41.90$222.342,063,800
2017-10-04$41.95$222.612,053,100
2017-10-03$41.38$219.581,883,700
2017-10-02$41.60$220.751,419,800
2017-09-29$41.57$220.591,249,000
2017-09-28$41.70$221.281,295,700
2017-09-27$41.58$220.651,481,400
2017-09-26$42.25$224.201,091,000
2017-09-25$42.25$224.20975,000
2017-09-22$41.73$221.44684,400
2017-09-21$42.06$223.19653,300
2017-09-20$42.15$223.671,507,800
2017-09-19$42.53$225.691,605,500
2017-09-18$42.49$225.481,059,500
2017-09-15$42.90$227.651,954,500
2017-09-14$42.92$227.76840,700
2017-09-13$42.45$225.26868,000
2017-09-12$42.75$226.85945,900
2017-09-11$43.60$231.37939,600
2017-09-08$43.19$229.19725,500
2017-09-07$42.95$227.921,175,100
2017-09-06$42.60$226.06711,000
2017-09-05$42.91$227.701,033,600
2017-09-01$42.57$225.901,049,200
2017-08-31$42.74$226.80981,600
2017-08-30$42.77$226.961,459,200
2017-08-29$43.06$228.50887,700
2017-08-28$43.08$228.611,178,300
2017-08-25$42.87$227.491,142,000
2017-08-24$42.86$227.44892,400
2017-08-23$43.01$228.231,502,600
2017-08-22$42.72$226.701,112,700
2017-08-21$42.40$225.00837,900
2017-08-18$42.24$224.151,412,700
2017-08-17$41.77$221.65949,800
2017-08-16$42.08$223.30590,300
2017-08-15$41.91$222.40568,900
2017-08-14$41.67$221.12652,800
2017-08-11$41.37$219.531,407,000
2017-08-10$41.63$220.91905,400
2017-08-09$41.51$220.271,195,600
2017-08-08$41.57$220.59729,400
2017-08-07$41.28$219.05651,500
2017-08-04$41.09$218.051,051,800
2017-08-03$41.09$218.051,147,500
2017-08-02$40.95$217.30973,100
2017-08-01$40.83$216.671,506,800
2017-07-31$40.53$215.071,128,900
2017-07-28$40.47$214.761,305,100
2017-07-27$40.73$216.14765,000
2017-07-26$40.87$215.21804,000
2017-07-25$40.55$213.52687,200
2017-07-24$40.84$215.05918,600
2017-07-21$41.38$217.89829,300
2017-07-20$41.01$215.941,256,800
2017-07-19$40.50$213.26767,900
2017-07-18$40.28$212.10624,700
2017-07-17$40.13$211.31727,900
2017-07-14$39.97$210.47784,300
2017-07-13$39.73$209.201,385,100
2017-07-12$39.88$209.99617,900
2017-07-11$39.59$208.47802,100
2017-07-10$39.56$208.31960,800
2017-07-07$39.71$209.10683,600
2017-07-06$39.67$208.89864,200
2017-07-05$39.76$209.361,118,500
2017-07-03$39.89$210.05724,200
2017-06-30$40.17$211.521,514,200
2017-06-29$40.45$213.001,223,900
2017-06-28$40.87$215.211,592,500
2017-06-27$41.12$216.52934,900
2017-06-26$41.69$219.52730,700
2017-06-23$41.45$218.261,103,500
2017-06-22$41.59$219.00850,800
2017-06-21$41.80$220.10858,900
2017-06-20$41.84$220.31858,300
2017-06-19$41.86$220.42745,700
2017-06-16$42.18$222.101,965,500
2017-06-15$41.67$219.42745,300
2017-06-14$41.57$218.89942,600
2017-06-13$41.25$217.21777,300
2017-06-12$41.17$216.79971,900
2017-06-09$41.26$217.261,132,500
2017-06-08$41.25$217.211,198,800
2017-06-07$41.61$219.10986,600
2017-06-06$41.46$218.31941,000
2017-06-05$41.64$219.26759,700
2017-06-02$41.83$220.261,151,800
2017-06-01$41.63$219.211,757,100
2017-05-31$41.47$218.372,186,000
2017-05-30$41.47$218.371,465,300
2017-05-26$41.36$217.79958,200
2017-05-25$41.56$218.841,385,200
2017-05-24$41.12$216.521,741,300
2017-05-23$40.91$215.422,437,600
2017-05-22$40.38$212.631,616,000
2017-05-19$39.75$209.316,536,500
2017-05-18$39.82$209.681,724,600
2017-05-17$39.62$208.621,492,200
2017-05-16$39.38$207.361,307,400
2017-05-15$39.78$209.471,093,500
2017-05-12$39.61$208.571,724,200
2017-05-11$39.40$207.471,256,300
2017-05-10$39.52$208.101,366,700
2017-05-09$39.57$208.361,317,900
2017-05-08$39.79$209.521,272,500
2017-05-05$40.06$210.941,452,600
2017-05-04$39.87$209.942,181,300
2017-05-03$39.29$206.891,405,700
2017-05-02$39.42$207.571,547,500
2017-05-01$39.10$205.891,185,600
2017-04-28$39.32$207.051,910,900
2017-04-27$39.72$209.151,729,600
2017-04-26$39.48$207.891,943,800
2017-04-25$40.01$209.021,496,400
2017-04-24$40.07$209.331,351,600
2017-04-21$39.96$208.761,219,800
2017-04-20$39.72$207.501,248,000
2017-04-19$39.81$207.98970,500
2017-04-18$40.15$209.751,276,900
2017-04-17$39.88$208.34912,000
2017-04-13$39.62$206.981,173,300
2017-04-12$39.89$208.391,445,100
2017-04-11$39.70$207.40850,900
2017-04-10$39.71$207.45739,000
2017-04-07$39.70$207.401,063,400
2017-04-06$39.87$208.29657,100
2017-04-05$39.98$208.861,186,100
2017-04-04$39.87$208.291,020,500
2017-04-03$39.59$206.831,045,800
2017-03-31$39.61$206.931,026,700
2017-03-30$39.57$206.72847,200
2017-03-29$39.98$208.86989,000
2017-03-28$40.12$209.59915,400
2017-03-27$40.06$209.281,156,600
2017-03-24$40.10$209.49777,900
2017-03-23$39.84$208.13877,200
2017-03-22$39.78$207.821,151,100
2017-03-21$39.70$207.401,250,500
2017-03-20$39.10$204.27917,700
2017-03-17$39.56$206.675,360,200
2017-03-16$39.13$204.421,612,400
2017-03-15$39.58$206.771,537,100
2017-03-14$38.87$203.061,061,900
2017-03-13$38.75$202.441,656,600
2017-03-10$38.61$201.711,102,500
2017-03-09$38.30$200.091,121,900
2017-03-08$38.39$200.561,019,300
2017-03-07$39.28$205.211,147,000
2017-03-06$39.18$204.681,038,500
2017-03-03$39.19$204.741,175,500
2017-03-02$39.25$205.051,183,900
2017-03-01$39.08$204.161,454,800
2017-02-28$39.48$206.251,927,300
2017-02-27$39.05$204.001,746,100
2017-02-24$39.52$206.461,538,800
2017-02-23$39.11$204.321,103,600
2017-02-22$38.65$201.911,323,800
2017-02-21$38.43$200.771,184,300
2017-02-17$38.08$198.941,254,900
2017-02-16$37.93$198.151,478,700
2017-02-15$37.54$196.121,144,500
2017-02-14$37.67$196.80887,400
2017-02-13$37.99$198.47978,900
2017-02-10$37.86$197.79903,600
2017-02-09$37.65$196.691,060,800
2017-02-08$38.15$199.301,542,800
2017-02-07$37.80$197.47758,500
2017-02-06$37.66$196.74852,600
2017-02-03$37.82$197.581,520,600
2017-02-02$37.51$195.96747,900
2017-02-01$36.98$193.191,191,100
2017-01-31$37.65$196.691,666,800
2017-01-30$36.86$192.56911,600
2017-01-27$36.89$192.721,124,000
2017-01-26$36.95$191.39750,400
2017-01-25$36.89$191.081,015,700
2017-01-24$36.95$191.391,370,700
2017-01-23$37.03$191.801,096,100
2017-01-20$37.36$193.51718,900
2017-01-19$37.28$193.10723,700
2017-01-18$37.70$195.27937,200
2017-01-17$37.75$195.531,111,600
2017-01-13$37.49$194.19949,600
2017-01-12$37.65$195.01812,400
2017-01-11$37.75$195.53706,200
2017-01-10$37.24$192.89572,300
2017-01-09$37.28$193.10807,400
2017-01-06$37.80$195.791,331,600
2017-01-05$38.11$197.401,334,700
2017-01-04$38.16$197.661,032,800
2017-01-03$37.93$196.46866,200