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 — 2009

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2009-12-31$15.13$59.791,150,400
2009-12-30$15.38$60.781,774,800
2009-12-29$15.45$61.031,119,600
2009-12-28$15.45$61.031,113,000
2009-12-24$15.60$61.63325,400
2009-12-23$15.48$61.171,128,600
2009-12-22$15.43$60.951,018,000
2009-12-21$15.40$60.841,007,600
2009-12-18$15.24$60.222,880,200
2009-12-17$15.05$59.472,178,800
2009-12-16$15.34$60.621,443,600
2009-12-15$15.25$60.241,485,600
2009-12-14$15.35$60.661,533,400
2009-12-11$15.24$60.201,064,600
2009-12-10$14.91$58.921,220,600
2009-12-09$14.79$58.431,421,800
2009-12-08$14.76$58.331,470,000
2009-12-07$14.64$57.831,781,000
2009-12-04$14.57$57.561,401,400
2009-12-03$14.44$57.041,420,400
2009-12-02$14.24$56.251,530,800
2009-12-01$13.94$55.091,780,800
2009-11-30$13.74$54.302,002,200
2009-11-27$13.63$53.84744,400
2009-11-25$13.87$54.811,290,000
2009-11-24$13.78$54.451,660,000
2009-11-23$13.80$54.53797,800
2009-11-20$13.69$54.101,162,000
2009-11-19$13.72$54.20794,000
2009-11-18$13.85$54.73448,200
2009-11-17$13.95$55.11653,600
2009-11-16$13.97$55.21595,400
2009-11-13$13.81$54.551,582,800
2009-11-12$13.63$53.841,852,400
2009-11-11$13.89$54.891,036,200
2009-11-10$13.89$54.871,747,200
2009-11-09$13.77$54.411,863,800
2009-11-06$13.68$54.042,360,400
2009-11-05$13.68$54.061,476,200
2009-11-04$13.35$52.752,701,400
2009-11-03$13.21$52.181,848,200
2009-11-02$13.19$52.102,159,000
2009-10-30$13.28$52.483,927,600
2009-10-29$13.41$52.971,724,600
2009-10-28$13.34$52.702,303,600
2009-10-27$13.64$53.161,186,200
2009-10-26$13.55$52.792,500,400
2009-10-23$13.74$53.53824,400
2009-10-22$13.95$54.351,476,200
2009-10-21$13.84$53.941,490,800
2009-10-20$13.97$54.431,953,800
2009-10-19$14.15$55.151,804,800
2009-10-16$13.86$54.021,199,400
2009-10-15$13.78$53.71941,000
2009-10-14$13.59$52.95860,200
2009-10-13$13.61$53.041,043,600
2009-10-12$13.59$52.95440,000
2009-10-09$13.59$52.97826,000
2009-10-08$13.53$52.731,563,800
2009-10-07$13.53$52.731,528,000
2009-10-06$13.58$52.931,452,400
2009-10-05$13.57$52.871,235,800
2009-10-02$13.44$52.381,624,600
2009-10-01$13.64$53.161,479,600
2009-09-30$13.93$54.271,499,800
2009-09-29$14.11$54.991,649,400
2009-09-28$14.30$55.731,420,200
2009-09-25$14.20$55.341,498,800
2009-09-24$14.15$55.152,290,800
2009-09-23$14.10$54.951,360,800
2009-09-22$14.02$54.62958,400
2009-09-21$14.02$54.641,076,000
2009-09-18$14.09$54.911,627,600
2009-09-17$13.97$54.452,165,800
2009-09-16$14.14$55.113,426,200
2009-09-15$13.56$52.851,783,000
2009-09-14$13.28$51.74734,000
2009-09-11$13.09$51.001,073,400
2009-09-10$13.09$51.001,188,000
2009-09-09$13.00$50.65825,600
2009-09-08$12.96$50.511,694,400
2009-09-04$13.04$50.80561,600
2009-09-03$13.01$50.69982,000
2009-09-02$12.94$50.431,152,600
2009-09-01$13.06$50.881,159,400
2009-08-31$13.17$51.331,205,400
2009-08-28$13.40$52.212,857,800
2009-08-27$13.45$52.422,053,600
2009-08-26$13.53$52.71784,800
2009-08-25$13.50$52.611,143,800
2009-08-24$13.44$52.36986,200
2009-08-21$13.35$52.01893,400
2009-08-20$13.24$51.60630,600
2009-08-19$13.28$51.76822,200
2009-08-18$13.20$51.451,216,600
2009-08-17$13.15$51.231,371,600
2009-08-14$13.23$51.542,362,400
2009-08-13$13.27$51.721,706,000
2009-08-12$13.30$51.831,224,000
2009-08-11$13.06$50.90680,400
2009-08-10$12.96$50.51531,800
2009-08-07$12.99$50.61948,200
2009-08-06$12.73$49.592,556,800
2009-08-05$13.09$51.00964,400
2009-08-04$13.19$51.391,155,800
2009-08-03$13.30$51.831,033,000
2009-07-31$13.08$50.98970,000
2009-07-30$13.13$51.17677,000
2009-07-29$12.97$50.531,250,400
2009-07-28$13.18$50.621,082,600
2009-07-27$13.31$51.121,193,800
2009-07-24$13.44$51.62532,000
2009-07-23$13.27$50.98841,800
2009-07-22$13.01$49.981,036,400
2009-07-21$13.04$50.08958,800
2009-07-20$12.87$49.431,521,800
2009-07-17$12.85$49.371,671,000
2009-07-16$13.14$50.48894,600
2009-07-15$13.16$50.54999,600
2009-07-14$12.91$49.58731,600
2009-07-13$12.80$49.16976,000
2009-07-10$12.67$48.68815,200
2009-07-09$12.80$49.18922,800
2009-07-08$12.86$49.391,326,600
2009-07-07$12.93$49.66839,200
2009-07-06$13.22$50.771,112,800
2009-07-02$12.90$49.56991,600
2009-07-01$13.44$51.64999,000
2009-06-30$13.07$50.191,237,600
2009-06-29$13.09$50.271,391,200
2009-06-26$12.79$49.141,192,000
2009-06-25$12.65$48.601,239,400
2009-06-24$12.45$47.81880,400
2009-06-23$12.39$47.581,466,200
2009-06-22$12.72$48.851,497,600
2009-06-19$12.62$48.481,689,400
2009-06-18$12.73$48.911,116,600
2009-06-17$12.41$47.681,032,000
2009-06-16$12.31$47.271,024,400
2009-06-15$12.39$47.60852,800
2009-06-12$12.55$48.201,401,200
2009-06-11$12.31$47.271,694,400
2009-06-10$11.91$45.741,159,000
2009-06-09$11.95$45.89841,600
2009-06-08$12.03$46.221,216,200
2009-06-05$12.11$46.53953,200
2009-06-04$12.14$46.64745,400
2009-06-03$12.13$46.60847,800
2009-06-02$12.32$47.31906,400
2009-06-01$12.31$47.291,310,200
2009-05-29$11.87$45.581,224,000
2009-05-28$11.88$45.62981,600
2009-05-27$11.73$45.051,171,000
2009-05-26$11.99$46.062,129,600
2009-05-22$11.76$45.16850,000
2009-05-21$11.81$45.351,295,600
2009-05-20$11.93$45.811,572,400
2009-05-19$12.11$46.511,497,600
2009-05-18$11.92$45.801,338,600
2009-05-15$11.79$45.282,944,400
2009-05-14$11.95$45.911,414,600
2009-05-13$11.90$45.722,045,400
2009-05-12$12.12$46.561,650,200
2009-05-11$12.13$46.601,500,000
2009-05-08$12.27$47.142,242,000
2009-05-07$12.13$46.601,609,000
2009-05-06$12.03$46.221,716,400
2009-05-05$11.98$46.012,804,800
2009-05-04$11.49$44.142,572,400
2009-05-01$11.18$42.952,641,400
2009-04-30$11.18$42.952,796,000
2009-04-29$11.23$43.142,597,200
2009-04-28$11.34$43.572,253,600
2009-04-27$11.63$43.941,459,400
2009-04-24$11.56$43.681,292,600
2009-04-23$11.52$43.531,758,600
2009-04-22$11.52$43.532,022,000
2009-04-21$11.71$44.242,039,200
2009-04-20$11.92$45.061,560,200
2009-04-17$12.14$45.891,726,600
2009-04-16$12.08$45.641,869,400
2009-04-15$12.04$45.491,965,400
2009-04-14$12.06$45.591,124,200
2009-04-13$12.26$46.341,575,200
2009-04-09$12.55$47.421,981,400
2009-04-08$12.40$46.871,860,800
2009-04-07$12.19$46.061,493,000
2009-04-06$12.30$46.471,428,200
2009-04-03$12.35$46.661,335,200
2009-04-02$12.37$46.761,446,800
2009-04-01$12.34$46.641,347,800
2009-03-31$12.35$46.662,119,000
2009-03-30$12.04$45.491,193,600
2009-03-27$12.26$46.341,369,200
2009-03-26$12.43$46.981,799,800
2009-03-25$12.13$45.851,620,800
2009-03-24$12.16$45.962,313,000
2009-03-23$12.23$46.211,981,200
2009-03-20$11.62$43.922,213,600
2009-03-19$11.81$44.641,713,600
2009-03-18$11.79$44.572,450,200
2009-03-17$11.38$43.002,142,800
2009-03-16$11.09$41.904,185,000
2009-03-13$10.83$40.922,208,600
2009-03-12$10.71$40.462,599,600
2009-03-11$10.63$40.162,268,200
2009-03-10$10.47$39.562,649,000
2009-03-09$10.23$38.672,685,400
2009-03-06$10.47$39.582,512,000
2009-03-05$10.28$38.862,339,600
2009-03-04$10.86$41.031,606,000
2009-03-03$10.66$40.292,482,000
2009-03-02$11.15$42.132,272,800
2009-02-27$11.57$43.712,689,000
2009-02-26$11.75$44.412,980,800
2009-02-25$11.80$44.603,002,800
2009-02-24$11.62$43.902,726,600
2009-02-23$11.53$43.562,839,400
2009-02-20$12.10$45.742,042,800
2009-02-19$12.55$47.442,573,800
2009-02-18$12.62$47.703,778,400
2009-02-17$12.94$48.892,861,200
2009-02-13$13.64$51.542,303,200
2009-02-12$13.65$51.582,308,000
2009-02-11$13.86$52.372,983,200
2009-02-10$13.73$51.903,019,400
2009-02-09$14.43$54.533,011,800
2009-02-06$14.55$54.984,127,800
2009-02-05$14.87$56.194,599,000
2009-02-04$14.75$55.755,139,800
2009-02-03$14.73$55.661,512,400
2009-02-02$14.57$55.071,061,800
2009-01-30$14.42$54.491,524,600
2009-01-29$14.65$55.361,317,800
2009-01-28$14.71$55.601,762,000
2009-01-27$14.68$54.762,032,200
2009-01-26$14.32$53.421,317,000
2009-01-23$13.89$51.831,033,400
2009-01-22$13.86$51.701,481,600
2009-01-21$13.85$51.661,682,000
2009-01-20$13.64$50.881,082,200
2009-01-16$13.94$52.001,510,800
2009-01-15$13.71$51.141,294,800
2009-01-14$13.72$51.201,537,000
2009-01-13$14.05$52.411,481,200
2009-01-12$14.26$53.211,172,800
2009-01-09$14.02$52.301,089,400
2009-01-08$14.17$52.881,799,600
2009-01-07$14.09$52.561,065,800
2009-01-06$14.19$52.951,871,000
2009-01-05$14.53$54.202,366,200
2009-01-02$14.85$55.40778,600