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 — 1988

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1988-12-30$11.50$12.9577,800
1988-12-29$11.19$12.6018,600
1988-12-28$11.38$12.8116,400
1988-12-27$11.25$12.6721,800
1988-12-23$11.25$12.674,600
1988-12-22$11.44$12.8837,400
1988-12-21$11.56$13.0231,400
1988-12-20$11.56$13.0216,000
1988-12-19$11.50$12.9527,400
1988-12-16$11.56$13.0224,200
1988-12-15$11.50$12.9521,800
1988-12-14$11.50$12.9568,600
1988-12-13$11.50$12.9522,000
1988-12-12$11.50$12.9521,600
1988-12-09$11.50$12.9556,400
1988-12-08$11.50$12.9594,000
1988-12-07$11.31$12.7416,200
1988-12-06$11.25$12.6715,800
1988-12-05$11.19$12.6025,200
1988-12-02$11.31$12.7410,800
1988-12-01$11.25$12.6714,800
1988-11-30$11.25$12.6728,200
1988-11-29$11.19$12.609,600
1988-11-28$11.25$12.6721,000
1988-11-25$11.31$12.7420,400
1988-11-23$11.38$12.8123,200
1988-11-22$11.25$12.6721,400
1988-11-21$11.31$12.7430,400
1988-11-18$11.25$12.6719,800
1988-11-17$11.25$12.6714,000
1988-11-16$11.44$12.8819,800
1988-11-15$11.38$12.8122,200
1988-11-14$11.56$13.0263,400
1988-11-11$11.50$12.9528,800
1988-11-10$11.56$13.0246,600
1988-11-09$11.75$13.2319,400
1988-11-08$11.38$12.8121,400
1988-11-07$11.25$12.6716,600
1988-11-04$11.50$12.959,400
1988-11-03$11.44$12.8811,200
1988-11-02$11.25$12.6716,600
1988-11-01$11.44$12.8822,800
1988-10-31$11.38$12.8113,800
1988-10-28$11.31$12.7430,800
1988-10-27$11.63$13.0910,800
1988-10-26$11.56$13.0218,000
1988-10-25$11.31$12.7419,200
1988-10-24$11.44$12.6551,200
1988-10-21$11.31$12.5180,000
1988-10-20$11.31$12.5141,600
1988-10-19$11.19$12.3755,800
1988-10-18$11.44$12.6529,400
1988-10-17$11.38$12.5816,800
1988-10-14$11.44$12.6519,400
1988-10-13$11.44$12.6560,800
1988-10-12$11.56$12.7923,400
1988-10-11$11.69$12.9332,200
1988-10-10$11.81$13.068,000
1988-10-07$11.69$12.9315,000
1988-10-06$11.56$12.7915,400
1988-10-05$11.63$12.8617,800
1988-10-04$11.63$12.8614,600
1988-10-03$11.69$12.9319,400
1988-09-30$11.63$12.8648,800
1988-09-29$11.56$12.7931,400
1988-09-28$11.38$12.5826,200
1988-09-27$11.50$12.72154,400
1988-09-26$11.19$12.3719,600
1988-09-23$11.28$12.4810,000
1988-09-22$11.25$12.4418,000
1988-09-21$11.34$12.5520,800
1988-09-20$11.38$12.5810,800
1988-09-19$11.25$12.4412,400
1988-09-16$11.06$12.2381,600
1988-09-15$11.22$12.4122,800
1988-09-14$11.22$12.4182,000
1988-09-13$11.38$12.5835,600
1988-09-12$11.44$12.6518,800
1988-09-09$11.44$12.6512,400
1988-09-08$11.44$12.6517,600
1988-09-07$11.44$12.6519,600
1988-09-06$11.47$12.6810,800
1988-09-02$11.50$12.7238,400
1988-09-01$11.47$12.6813,600
1988-08-31$11.44$12.6530,000
1988-08-30$11.50$12.7213,600
1988-08-29$11.44$12.6528,800
1988-08-26$11.47$12.68111,200
1988-08-25$11.38$12.5832,000
1988-08-24$11.38$12.5820,000
1988-08-23$11.31$12.5140,800
1988-08-22$11.31$12.5114,800
1988-08-19$11.25$12.4416,800
1988-08-18$11.22$12.4134,000
1988-08-17$11.13$12.3044,000
1988-08-16$11.19$12.3779,600
1988-08-15$11.03$12.2047,600
1988-08-12$10.84$11.9920,800
1988-08-11$10.84$11.9929,200
1988-08-10$10.72$11.8526,400
1988-08-09$10.97$12.1324,400
1988-08-08$11.09$12.2715,200
1988-08-05$11.13$12.3011,600
1988-08-04$11.25$12.4416,400
1988-08-03$11.16$12.348,800
1988-08-02$11.09$12.2734,000
1988-08-01$11.16$12.3414,400
1988-07-29$11.19$12.3743,200
1988-07-28$11.16$12.348,800
1988-07-27$11.16$12.3425,600
1988-07-26$11.06$12.2345,200
1988-07-25$11.06$12.237,600
1988-07-22$11.31$12.2947,600
1988-07-21$11.53$12.5251,600
1988-07-20$11.56$12.565,200
1988-07-19$11.53$12.528,000
1988-07-18$11.56$12.5647,200
1988-07-15$11.72$12.739,200
1988-07-14$11.69$12.6924,400
1988-07-13$11.69$12.6918,000
1988-07-12$11.69$12.6911,200
1988-07-11$11.69$12.696,800
1988-07-08$11.66$12.6610,400
1988-07-07$11.63$12.635,200
1988-07-06$11.69$12.692,400
1988-07-05$11.69$12.6916,000
1988-07-01$11.63$12.6319,600
1988-06-30$11.63$12.6317,200
1988-06-29$11.56$12.5631,200
1988-06-28$11.50$12.4938,400
1988-06-27$11.66$12.6612,400
1988-06-24$11.69$12.6918,000
1988-06-23$11.72$12.7339,600
1988-06-22$11.75$12.7618,000
1988-06-21$11.59$12.5912,000
1988-06-20$11.63$12.638,000
1988-06-17$11.56$12.5615,600
1988-06-16$11.53$12.5213,600
1988-06-15$11.53$12.5228,000
1988-06-14$11.50$12.4920,000
1988-06-13$11.50$12.4924,800
1988-06-10$11.56$12.5618,000
1988-06-09$11.44$12.4214,400
1988-06-08$11.44$12.4224,400
1988-06-07$11.44$12.4223,600
1988-06-06$11.31$12.299,600
1988-06-03$11.41$12.3939,200
1988-06-02$11.41$12.3932,800
1988-06-01$11.38$12.35141,200
1988-05-31$11.09$12.0522,800
1988-05-27$11.06$12.0218,000
1988-05-26$10.91$11.8512,400
1988-05-25$10.97$11.919,600
1988-05-24$11.00$11.9543,200
1988-05-23$10.91$11.8532,400
1988-05-20$10.97$11.9115,200
1988-05-19$10.97$11.9138,800
1988-05-18$10.91$11.8558,400
1988-05-17$10.88$11.8123,200
1988-05-16$10.88$11.8118,000
1988-05-13$10.91$11.8512,800
1988-05-12$10.91$11.8539,600
1988-05-11$10.88$11.8118,000
1988-05-10$10.94$11.8842,800
1988-05-09$10.88$11.8125,200
1988-05-06$10.94$11.8838,000
1988-05-05$10.94$11.8818,400
1988-05-04$11.00$11.9513,600
1988-05-03$11.00$11.9561,200
1988-05-02$11.00$11.9517,200
1988-04-29$11.13$12.0829,600
1988-04-28$10.91$11.8512,800
1988-04-27$11.00$11.9567,600
1988-04-26$10.84$11.7892,400
1988-04-25$10.78$11.7178,400
1988-04-22$11.00$11.957,200
1988-04-21$11.06$12.0236,400
1988-04-20$11.06$12.0236,400
1988-04-19$11.09$12.0518,400
1988-04-18$11.13$12.0811,600
1988-04-15$11.22$12.1812,400
1988-04-14$11.34$12.3212,800
1988-04-13$11.34$12.327,200
1988-04-12$11.34$12.3231,600
1988-04-11$11.34$12.3232,400
1988-04-08$11.34$12.3210,400
1988-04-07$11.34$12.327,600
1988-04-06$11.25$12.2221,200
1988-04-05$11.34$12.327,200
1988-04-04$11.38$12.3517,200
1988-03-31$11.31$12.2917,600
1988-03-30$11.28$12.2540,800
1988-03-29$11.31$12.2931,200
1988-03-28$11.25$12.2215,200
1988-03-25$11.19$12.1534,800
1988-03-24$11.34$12.3222,800
1988-03-23$11.47$12.4623,600
1988-03-22$11.50$12.4924,400
1988-03-21$11.53$12.5215,200
1988-03-18$11.59$12.5914,000
1988-03-17$11.59$12.5932,800
1988-03-16$11.59$12.5934,000
1988-03-15$11.63$12.6318,800
1988-03-14$11.66$12.6635,600
1988-03-11$11.66$12.6622,800
1988-03-10$11.63$12.6344,000
1988-03-09$11.75$12.7622,800
1988-03-08$11.72$12.7329,200
1988-03-07$11.75$12.7627,200
1988-03-04$11.84$12.8615,200
1988-03-03$11.91$12.9329,200
1988-03-02$11.88$12.9014,000
1988-03-01$11.81$12.83142,400
1988-02-29$11.88$12.9031,600
1988-02-26$11.88$12.90132,400
1988-02-25$11.69$12.6922,400
1988-02-24$11.69$12.6926,800
1988-02-23$11.66$12.6635,200
1988-02-22$11.63$12.6322,000
1988-02-19$11.56$12.5622,800
1988-02-18$11.59$12.5956,800
1988-02-17$11.56$12.5612,400
1988-02-16$11.59$12.5927,200
1988-02-12$11.63$12.63174,800
1988-02-11$11.56$12.5615,600
1988-02-10$11.56$12.5624,800
1988-02-09$11.50$12.4915,200
1988-02-08$11.44$12.426,400
1988-02-05$11.63$12.6315,600
1988-02-04$11.59$12.5918,800
1988-02-03$11.50$12.4953,600
1988-02-02$11.63$12.6377,600
1988-02-01$11.50$12.4932,000
1988-01-29$11.44$12.4221,600
1988-01-28$11.28$12.2567,600
1988-01-27$11.28$12.2514,800
1988-01-26$11.34$12.3288,400
1988-01-25$11.38$12.3524,800
1988-01-22$11.41$12.1744,400
1988-01-21$11.34$12.1050,800
1988-01-20$11.41$12.1713,600
1988-01-19$11.44$12.2028,000
1988-01-18$11.41$12.1741,200
1988-01-15$11.31$12.0724,000
1988-01-14$11.25$12.0025,600
1988-01-13$11.19$11.9416,400
1988-01-12$11.00$11.7420,000
1988-01-11$10.94$11.6724,800
1988-01-08$10.94$11.6723,600
1988-01-07$11.00$11.7417,600
1988-01-06$11.00$11.7452,800
1988-01-05$11.06$11.8012,400
1988-01-04$11.06$11.8039,600