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 — 1989

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1989-12-29$12.19$14.7784,800
1989-12-28$11.94$14.4626,000
1989-12-27$11.94$14.46124,400
1989-12-26$11.81$14.3110,000
1989-12-22$11.75$14.2428,200
1989-12-21$11.88$14.3981,800
1989-12-20$11.88$14.3923,000
1989-12-19$11.81$14.3160,800
1989-12-18$11.81$14.3175,000
1989-12-15$11.94$14.4686,400
1989-12-14$12.06$14.6235,800
1989-12-13$12.19$14.7722,200
1989-12-12$12.13$14.69120,600
1989-12-11$12.19$14.7740,200
1989-12-08$12.00$14.5467,000
1989-12-07$11.94$14.4610,400
1989-12-06$11.88$14.3915,200
1989-12-05$11.81$14.3127,000
1989-12-04$11.88$14.3923,400
1989-12-01$11.75$14.24268,600
1989-11-30$11.50$13.93119,400
1989-11-29$11.63$14.0968,800
1989-11-28$11.63$14.0921,600
1989-11-27$11.63$14.0925,600
1989-11-24$11.75$14.247,600
1989-11-22$11.81$14.3143,400
1989-11-21$11.88$14.3919,000
1989-11-20$11.94$14.4674,600
1989-11-17$12.00$14.5410,600
1989-11-16$12.06$14.6230,200
1989-11-15$12.06$14.6244,000
1989-11-14$12.00$14.5429,800
1989-11-13$12.00$14.5435,200
1989-11-10$11.94$14.4616,400
1989-11-09$11.75$14.2485,800
1989-11-08$11.81$14.3122,000
1989-11-07$11.75$14.2417,000
1989-11-06$11.81$14.3117,000
1989-11-03$11.81$14.3119,800
1989-11-02$11.69$14.1613,000
1989-11-01$11.69$14.16130,200
1989-10-31$11.50$13.9328,200
1989-10-30$11.44$13.8620,400
1989-10-27$11.38$13.7849,800
1989-10-26$11.56$14.0119,200
1989-10-25$11.56$14.0119,600
1989-10-24$11.63$13.8360,600
1989-10-23$11.69$13.9118,600
1989-10-20$11.56$13.7634,000
1989-10-19$11.63$13.8327,000
1989-10-18$11.56$13.7621,600
1989-10-17$11.56$13.7617,400
1989-10-16$11.56$13.7626,600
1989-10-13$11.38$13.5330,200
1989-10-12$11.50$13.6812,200
1989-10-11$11.50$13.6817,200
1989-10-10$11.56$13.7634,200
1989-10-09$11.56$13.7612,000
1989-10-06$11.63$13.8328,400
1989-10-05$11.69$13.9132,000
1989-10-04$11.69$13.9183,600
1989-10-03$11.63$13.8312,600
1989-10-02$11.63$13.8363,400
1989-09-29$11.63$13.8318,200
1989-09-28$11.44$13.6151,800
1989-09-27$11.44$13.6123,800
1989-09-26$11.38$13.53151,000
1989-09-25$11.44$13.6127,600
1989-09-22$11.38$13.5330,400
1989-09-21$11.50$13.6825,800
1989-09-20$11.44$13.6147,800
1989-09-19$11.50$13.6833,200
1989-09-18$11.50$13.6810,000
1989-09-15$11.44$13.6125,800
1989-09-14$11.50$13.6814,600
1989-09-13$11.63$13.8344,800
1989-09-12$11.56$13.7619,000
1989-09-11$11.38$13.5333,600
1989-09-08$11.38$13.5311,200
1989-09-07$11.50$13.6822,200
1989-09-06$11.56$13.7630,400
1989-09-05$11.69$13.9178,200
1989-09-01$11.69$13.917,000
1989-08-31$11.63$13.836,200
1989-08-30$11.69$13.919,600
1989-08-29$11.63$13.8322,400
1989-08-28$11.69$13.9121,200
1989-08-25$11.63$13.8317,800
1989-08-24$11.69$13.9137,400
1989-08-23$11.56$13.76117,200
1989-08-22$11.81$14.057,000
1989-08-21$12.00$14.2834,000
1989-08-18$12.19$14.509,600
1989-08-17$12.19$14.5051,800
1989-08-16$12.06$14.3553,600
1989-08-15$12.06$14.3535,600
1989-08-14$12.06$14.3518,600
1989-08-11$12.06$14.3541,600
1989-08-10$11.94$14.2044,400
1989-08-09$11.88$14.1316,400
1989-08-08$12.13$14.4323,800
1989-08-07$12.13$14.4324,000
1989-08-04$12.00$14.2832,800
1989-08-03$12.13$14.4311,600
1989-08-02$12.19$14.5045,800
1989-08-01$12.13$14.4367,200
1989-07-31$11.88$14.1348,400
1989-07-28$11.81$14.0521,600
1989-07-27$11.81$14.0536,200
1989-07-26$11.81$14.0510,000
1989-07-25$11.63$13.8315,600
1989-07-24$11.94$13.95100,400
1989-07-21$11.88$13.8819,800
1989-07-20$11.88$13.8860,200
1989-07-19$11.81$13.8124,800
1989-07-18$11.88$13.8824,400
1989-07-17$11.88$13.8840,600
1989-07-14$11.88$13.8828,200
1989-07-13$11.88$13.8824,800
1989-07-12$11.75$13.7323,000
1989-07-11$11.81$13.8158,000
1989-07-10$11.25$13.1541,200
1989-07-07$11.75$13.7374,200
1989-07-06$11.75$13.7331,000
1989-07-05$11.69$13.6614,800
1989-07-03$11.69$13.6619,400
1989-06-30$11.56$13.5158,800
1989-06-29$11.56$13.5140,600
1989-06-28$11.56$13.5116,800
1989-06-27$11.63$13.5978,400
1989-06-26$11.63$13.5916,800
1989-06-23$11.69$13.6671,200
1989-06-22$11.44$13.3719,800
1989-06-21$11.50$13.4435,400
1989-06-20$11.44$13.3718,800
1989-06-19$11.44$13.3719,600
1989-06-16$11.50$13.4412,200
1989-06-15$11.50$13.4421,200
1989-06-14$11.50$13.4420,400
1989-06-13$11.56$13.5131,200
1989-06-12$11.69$13.6654,800
1989-06-09$11.69$13.6642,000
1989-06-08$11.75$13.7327,800
1989-06-07$11.69$13.6645,600
1989-06-06$11.63$13.5947,000
1989-06-05$11.44$13.3778,000
1989-06-02$11.63$13.5913,600
1989-06-01$11.56$13.517,000
1989-05-31$11.63$13.5913,200
1989-05-30$11.69$13.6613,600
1989-05-26$11.81$13.8168,400
1989-05-25$11.81$13.81100,000
1989-05-24$11.75$13.7326,000
1989-05-23$11.75$13.73120,600
1989-05-22$11.31$13.2223,400
1989-05-19$11.38$13.3026,600
1989-05-18$11.44$13.3720,600
1989-05-17$11.38$13.3012,200
1989-05-16$11.44$13.3719,800
1989-05-15$11.31$13.2231,000
1989-05-12$11.13$13.0019,000
1989-05-11$11.00$12.8673,400
1989-05-10$11.25$13.1574,600
1989-05-09$11.13$13.0031,800
1989-05-08$11.00$12.8611,200
1989-05-05$11.13$13.0020,400
1989-05-04$11.06$12.9383,400
1989-05-03$11.19$13.08116,600
1989-05-02$11.19$13.0839,800
1989-05-01$11.06$12.9313,000
1989-04-28$11.06$12.9315,400
1989-04-27$11.06$12.9319,600
1989-04-26$11.06$12.9317,600
1989-04-25$11.06$12.9320,600
1989-04-24$11.00$12.8624,000
1989-04-21$11.19$12.8377,400
1989-04-20$11.19$12.8322,800
1989-04-19$11.13$12.7633,200
1989-04-18$11.13$12.7613,600
1989-04-17$11.13$12.7617,200
1989-04-14$11.13$12.7614,800
1989-04-13$11.19$12.8319,200
1989-04-12$11.19$12.8310,600
1989-04-11$11.25$12.9039,800
1989-04-10$11.13$12.7621,600
1989-04-07$11.06$12.6924,600
1989-04-06$11.00$12.627,000
1989-04-05$11.13$12.7614,800
1989-04-04$11.06$12.6919,400
1989-04-03$11.06$12.6956,800
1989-03-31$11.00$12.6210,800
1989-03-30$11.00$12.6220,200
1989-03-29$11.06$12.6910,000
1989-03-28$11.00$12.6237,600
1989-03-27$11.00$12.624,600
1989-03-23$11.06$12.698,600
1989-03-22$11.13$12.7619,000
1989-03-21$11.19$12.8311,000
1989-03-20$11.19$12.8327,600
1989-03-17$11.19$12.8311,400
1989-03-16$11.38$13.0530,000
1989-03-15$11.19$12.8314,800
1989-03-14$11.25$12.9017,000
1989-03-13$11.19$12.8317,400
1989-03-10$11.19$12.8329,800
1989-03-09$11.19$12.8311,200
1989-03-08$11.25$12.90169,800
1989-03-07$11.38$13.0514,800
1989-03-06$11.44$13.1247,600
1989-03-03$11.38$13.05112,800
1989-03-02$11.31$12.9740,200
1989-03-01$11.44$13.1262,600
1989-02-28$11.31$12.9772,800
1989-02-27$11.19$12.8317,000
1989-02-24$11.25$12.9054,600
1989-02-23$11.19$12.8367,800
1989-02-22$11.25$12.90135,600
1989-02-21$11.19$12.8342,000
1989-02-17$11.13$12.76123,600
1989-02-16$11.06$12.699,400
1989-02-15$11.06$12.6944,400
1989-02-14$11.00$12.6230,400
1989-02-13$11.00$12.6211,000
1989-02-10$11.06$12.6952,000
1989-02-09$11.19$12.8315,600
1989-02-08$11.19$12.8325,400
1989-02-07$11.13$12.7611,800
1989-02-06$11.19$12.8314,200
1989-02-03$11.25$12.9013,200
1989-02-02$11.06$12.6934,400
1989-02-01$11.13$12.7625,400
1989-01-31$11.25$12.9021,800
1989-01-30$11.19$12.83224,400
1989-01-27$11.19$12.83206,400
1989-01-26$11.13$12.7632,600
1989-01-25$11.13$12.7617,000
1989-01-24$11.44$12.8840,200
1989-01-23$11.50$12.9516,200
1989-01-20$11.38$12.8123,400
1989-01-19$11.44$12.88135,400
1989-01-18$11.50$12.9539,800
1989-01-17$11.44$12.8817,400
1989-01-16$11.44$12.8819,200
1989-01-13$11.38$12.8125,400
1989-01-12$11.44$12.8830,000
1989-01-11$11.50$12.9514,000
1989-01-10$11.50$12.95265,000
1989-01-09$11.50$12.9520,400
1989-01-06$11.44$12.8821,400
1989-01-05$11.31$12.7414,200
1989-01-04$11.31$12.7444,000
1989-01-03$11.19$12.6029,800