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 — 2004

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2004-12-31$14.30$46.10284,800
2004-12-30$14.40$46.42197,600
2004-12-29$14.33$46.20291,200
2004-12-28$14.32$46.17649,400
2004-12-27$14.18$45.72555,000
2004-12-23$14.17$45.67258,600
2004-12-22$14.15$45.60402,400
2004-12-21$14.08$45.38480,200
2004-12-20$13.93$44.91796,600
2004-12-17$14.03$45.231,156,000
2004-12-16$14.02$45.20976,000
2004-12-15$13.89$44.76599,400
2004-12-14$13.72$44.23511,200
2004-12-13$13.64$43.96428,600
2004-12-10$13.45$43.36359,600
2004-12-09$13.41$43.22331,800
2004-12-08$13.40$43.20499,800
2004-12-07$13.36$43.06509,800
2004-12-06$13.51$43.56783,200
2004-12-03$13.39$43.17620,800
2004-12-02$13.40$43.20664,400
2004-12-01$13.44$43.31633,400
2004-11-30$13.64$43.97465,600
2004-11-29$13.71$44.20470,000
2004-11-26$13.80$44.47153,400
2004-11-24$13.78$44.41419,400
2004-11-23$13.73$44.26458,400
2004-11-22$13.64$43.97525,200
2004-11-19$13.50$43.52519,400
2004-11-18$13.58$43.76478,200
2004-11-17$13.52$43.59411,200
2004-11-16$13.63$43.93656,600
2004-11-15$13.62$43.91620,200
2004-11-12$13.65$44.01558,800
2004-11-11$13.48$43.46269,800
2004-11-10$13.40$43.20493,800
2004-11-09$13.43$43.30633,800
2004-11-08$13.40$43.20521,400
2004-11-05$13.37$43.10402,800
2004-11-04$13.48$43.44581,400
2004-11-03$13.19$42.52471,000
2004-11-02$13.02$41.96611,600
2004-11-01$13.19$42.52571,000
2004-10-29$13.19$42.52305,000
2004-10-28$13.04$42.04694,600
2004-10-27$13.10$42.221,848,600
2004-10-26$13.12$41.871,282,000
2004-10-25$12.95$41.33463,200
2004-10-22$12.95$41.32330,400
2004-10-21$12.90$41.16516,000
2004-10-20$12.92$41.22400,000
2004-10-19$12.93$41.27234,600
2004-10-18$13.07$41.70437,800
2004-10-15$13.05$41.65326,000
2004-10-14$12.93$41.25356,800
2004-10-13$12.96$41.35506,200
2004-10-12$13.11$41.84787,800
2004-10-11$13.14$41.921,021,400
2004-10-08$12.91$41.19547,000
2004-10-07$12.87$41.08619,800
2004-10-06$12.98$41.43547,400
2004-10-05$12.83$40.93380,400
2004-10-04$12.74$40.66695,800
2004-10-01$12.63$40.29572,600
2004-09-30$12.44$39.70622,000
2004-09-29$12.30$39.26395,200
2004-09-28$12.40$39.58409,200
2004-09-27$12.22$39.00627,800
2004-09-24$12.22$39.00896,800
2004-09-23$12.29$39.21726,200
2004-09-22$12.48$39.82609,000
2004-09-21$12.54$40.02711,600
2004-09-20$12.65$40.37483,400
2004-09-17$12.73$40.63609,600
2004-09-16$12.80$40.84337,200
2004-09-15$12.70$40.53386,600
2004-09-14$12.68$40.47330,800
2004-09-13$12.74$40.65770,200
2004-09-10$12.83$40.93286,000
2004-09-09$12.88$41.11512,800
2004-09-08$12.86$41.03750,800
2004-09-07$13.03$41.57666,600
2004-09-03$13.00$41.48315,600
2004-09-02$13.03$41.57426,800
2004-09-01$13.00$41.48476,400
2004-08-31$13.00$41.481,475,400
2004-08-30$12.75$40.69395,400
2004-08-27$12.82$40.92472,800
2004-08-26$12.80$40.85493,800
2004-08-25$12.85$41.00690,800
2004-08-24$12.79$40.80729,400
2004-08-23$12.77$40.74536,400
2004-08-20$12.85$41.01873,800
2004-08-19$12.87$41.08338,200
2004-08-18$12.98$41.41684,000
2004-08-17$12.89$41.12330,600
2004-08-16$12.90$41.16706,400
2004-08-13$12.85$41.00362,400
2004-08-12$12.85$41.01668,800
2004-08-11$12.90$41.17523,800
2004-08-10$12.86$41.04853,400
2004-08-09$12.86$41.04729,600
2004-08-06$12.84$40.98791,000
2004-08-05$12.78$40.77553,200
2004-08-04$12.91$41.191,043,400
2004-08-03$12.94$41.30928,200
2004-08-02$13.02$41.55809,200
2004-07-30$12.96$41.35937,400
2004-07-29$13.00$41.49798,800
2004-07-28$12.95$41.33693,400
2004-07-27$13.02$41.14750,800
2004-07-26$13.18$41.66388,400
2004-07-23$13.20$41.71496,200
2004-07-22$13.34$42.15749,800
2004-07-21$13.50$42.671,079,000
2004-07-20$13.67$43.21870,800
2004-07-19$13.48$42.59600,000
2004-07-16$13.22$41.77356,600
2004-07-15$13.13$41.50789,200
2004-07-14$13.06$41.27593,000
2004-07-13$13.03$41.17448,200
2004-07-12$12.89$40.73482,400
2004-07-09$12.95$40.92303,000
2004-07-08$12.93$40.86432,200
2004-07-07$12.88$40.70509,200
2004-07-06$12.90$40.78545,000
2004-07-02$12.95$40.92400,800
2004-07-01$12.85$40.60564,600
2004-06-30$13.04$41.22764,400
2004-06-29$12.86$40.63472,600
2004-06-28$12.95$40.93541,600
2004-06-25$12.90$40.78677,000
2004-06-24$12.80$40.46553,600
2004-06-23$12.82$40.52424,600
2004-06-22$12.80$40.44462,200
2004-06-21$12.72$40.21417,400
2004-06-18$12.75$40.29404,800
2004-06-17$12.69$40.10380,000
2004-06-16$12.59$39.78413,600
2004-06-15$12.52$39.56568,600
2004-06-14$12.38$39.12648,600
2004-06-10$12.50$39.51267,600
2004-06-09$12.47$39.42595,200
2004-06-08$12.51$39.53417,200
2004-06-07$12.60$39.81526,000
2004-06-04$12.48$39.45617,800
2004-06-03$12.38$39.13568,400
2004-06-02$12.48$39.43607,600
2004-06-01$12.47$39.42768,800
2004-05-28$12.49$39.48531,600
2004-05-27$12.57$39.72651,800
2004-05-26$12.49$39.48727,800
2004-05-25$12.48$39.431,133,400
2004-05-24$12.13$38.33430,200
2004-05-21$12.06$38.12337,600
2004-05-20$12.06$38.11914,600
2004-05-19$12.00$37.921,956,800
2004-05-18$12.02$37.99635,400
2004-05-17$11.97$37.84695,400
2004-05-14$12.03$38.01838,800
2004-05-13$12.02$37.98508,000
2004-05-12$12.00$37.93816,600
2004-05-11$11.88$37.55475,200
2004-05-10$11.91$37.63700,800
2004-05-07$12.12$38.30759,600
2004-05-06$12.57$39.72690,800
2004-05-05$12.69$40.11562,800
2004-05-04$12.74$40.25516,200
2004-05-03$12.72$40.21887,200
2004-04-30$12.43$39.29954,200
2004-04-29$12.60$39.83707,600
2004-04-28$12.80$40.44960,800
2004-04-27$12.80$40.07325,800
2004-04-26$12.80$40.07489,000
2004-04-23$12.80$40.05496,800
2004-04-22$12.95$40.52595,200
2004-04-21$12.70$39.75336,400
2004-04-20$12.53$39.22328,400
2004-04-19$12.70$39.75525,800
2004-04-16$12.79$40.02586,200
2004-04-15$12.60$39.42546,800
2004-04-14$12.44$38.94837,800
2004-04-13$12.64$39.55668,200
2004-04-12$13.00$40.69560,400
2004-04-08$13.23$41.40392,400
2004-04-07$13.21$41.351,021,800
2004-04-06$13.25$41.47411,200
2004-04-05$13.15$41.16522,000
2004-04-02$12.98$40.61558,200
2004-04-01$13.08$40.93460,600
2004-03-31$13.03$40.79438,600
2004-03-30$13.00$40.68370,400
2004-03-29$12.93$40.46432,200
2004-03-26$12.94$40.49386,000
2004-03-25$12.78$40.00320,600
2004-03-24$12.70$39.75402,200
2004-03-23$12.84$40.17314,200
2004-03-22$12.77$39.97456,600
2004-03-19$13.09$40.96313,200
2004-03-18$13.17$41.21467,600
2004-03-17$13.22$41.36611,400
2004-03-16$12.98$40.61535,800
2004-03-15$12.96$40.55589,800
2004-03-12$12.88$40.32356,800
2004-03-11$12.88$40.301,037,000
2004-03-10$12.88$40.32517,400
2004-03-09$13.06$40.86650,000
2004-03-08$13.13$41.10874,200
2004-03-05$13.18$41.241,180,400
2004-03-04$12.93$40.47508,000
2004-03-03$12.90$40.38416,200
2004-03-02$12.94$40.50761,600
2004-03-01$12.93$40.47576,200
2004-02-27$12.88$40.30568,000
2004-02-26$12.79$40.03359,600
2004-02-25$12.79$40.02500,600
2004-02-24$12.84$40.19489,800
2004-02-23$12.80$40.05284,000
2004-02-20$12.87$40.28351,600
2004-02-19$13.05$40.83271,800
2004-02-18$13.15$41.16418,000
2004-02-17$13.10$40.99542,200
2004-02-13$12.98$40.63332,000
2004-02-12$13.11$41.02254,000
2004-02-11$13.15$41.15746,200
2004-02-10$13.09$40.97562,800
2004-02-09$12.98$40.63423,800
2004-02-06$12.99$40.66357,000
2004-02-05$12.79$40.02563,800
2004-02-04$12.91$40.39582,200
2004-02-03$13.00$40.69444,800
2004-02-02$12.92$40.44718,000
2004-01-30$12.95$40.521,375,600
2004-01-29$12.66$39.63495,400
2004-01-28$12.74$39.882,230,800
2004-01-27$12.84$39.78426,400
2004-01-26$12.79$39.64271,400
2004-01-23$12.82$39.74269,200
2004-01-22$12.82$39.72556,200
2004-01-21$12.90$39.97626,400
2004-01-20$12.84$39.80782,800
2004-01-16$12.48$38.67201,800
2004-01-15$12.49$38.71305,800
2004-01-14$12.57$38.96371,000
2004-01-13$12.44$38.54453,000
2004-01-12$12.52$38.79841,200
2004-01-09$12.38$38.37311,400
2004-01-08$12.59$39.01423,600
2004-01-07$12.59$39.02540,000
2004-01-06$12.48$38.67791,800
2004-01-05$12.45$38.57441,200
2004-01-02$12.41$38.47323,400