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 — 1985

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1985-12-31$10.09$10.0928,800
1985-12-30$10.13$10.1214,400
1985-12-27$10.09$10.0922,000
1985-12-26$10.03$10.0323,600
1985-12-24$9.97$9.979,600
1985-12-23$9.88$9.8742,800
1985-12-20$10.06$10.0635,600
1985-12-19$10.00$10.0040,800
1985-12-18$9.97$9.9752,400
1985-12-17$10.00$10.0063,600
1985-12-16$10.00$10.0059,600
1985-12-13$9.84$9.8436,400
1985-12-12$9.84$9.8441,600
1985-12-11$9.84$9.8439,200
1985-12-10$9.81$9.8181,200
1985-12-09$9.78$9.78184,400
1985-12-06$9.75$9.759,600
1985-12-05$9.66$9.6641,200
1985-12-04$9.72$9.7228,000
1985-12-03$9.72$9.7216,800
1985-12-02$9.66$9.6691,200
1985-11-29$9.78$9.7814,400
1985-11-27$9.81$9.8117,600
1985-11-26$9.78$9.7834,000
1985-11-25$9.78$9.7876,000
1985-11-22$9.84$9.84184,000
1985-11-21$9.75$9.75128,400
1985-11-20$9.69$9.69190,400
1985-11-19$9.69$9.6987,200
1985-11-18$9.66$9.6689,600
1985-11-15$9.66$9.6661,600
1985-11-14$9.56$9.5642,000
1985-11-13$9.53$9.5332,800
1985-11-12$9.63$9.6281,600
1985-11-11$9.41$9.4132,400
1985-11-08$9.34$9.3471,600
1985-11-07$9.19$9.19148,800
1985-11-06$9.16$9.1632,400
1985-11-05$9.16$9.16123,600
1985-11-04$9.09$9.0918,800
1985-11-01$9.03$9.03132,400
1985-10-31$9.09$9.0954,800
1985-10-30$9.13$9.1275,200
1985-10-29$9.00$9.0029,600
1985-10-28$8.91$8.9177,600
1985-10-25$8.97$8.9738,400
1985-10-24$9.16$9.16389,200
1985-10-23$9.16$9.1640,800
1985-10-22$9.06$9.06156,800
1985-10-21$9.06$9.06102,400
1985-10-18$9.00$9.0022,000
1985-10-17$9.00$9.0024,400
1985-10-16$9.00$9.008,400
1985-10-15$9.06$9.06168,800
1985-10-14$9.06$9.0612,400
1985-10-11$9.06$9.0626,000
1985-10-10$9.06$9.0616,000
1985-10-09$9.06$9.0616,000
1985-10-08$9.00$9.0023,200
1985-10-07$8.91$8.9180,400
1985-10-04$8.81$8.8122,400
1985-10-03$8.75$8.7519,200
1985-10-02$8.75$8.7534,400
1985-10-01$8.78$8.78153,200
1985-09-30$8.72$8.7226,000
1985-09-26$8.75$8.7514,800
1985-09-25$8.81$8.8116,400
1985-09-24$8.84$8.84262,000
1985-09-23$8.78$8.7815,600
1985-09-20$8.75$8.7551,600
1985-09-19$8.75$8.7562,000
1985-09-18$8.69$8.6913,600
1985-09-17$8.78$8.7844,400
1985-09-16$8.81$8.8111,200
1985-09-13$8.97$8.9725,600
1985-09-12$9.06$9.0652,800
1985-09-11$9.13$9.1224,000
1985-09-10$9.09$9.0941,600
1985-09-09$9.16$9.1683,200
1985-09-06$9.09$9.0918,800
1985-09-05$9.06$9.0611,200
1985-09-04$9.13$9.1268,400
1985-09-03$9.16$9.16103,200
1985-08-30$9.16$9.16150,400
1985-08-29$9.19$9.1914,800
1985-08-28$9.22$9.2228,800
1985-08-27$9.31$9.3113,200
1985-08-26$9.41$9.4137,600
1985-08-23$9.34$9.3416,000
1985-08-22$9.34$9.3443,200
1985-08-21$9.31$9.3170,800
1985-08-20$9.25$9.2564,400
1985-08-19$9.22$9.2253,600
1985-08-16$9.16$9.1668,000
1985-08-15$9.13$9.1237,600
1985-08-14$9.13$9.1242,800
1985-08-13$9.06$9.0648,400
1985-08-12$8.94$8.9448,400
1985-08-09$8.72$8.7240,400
1985-08-08$8.72$8.7251,200
1985-08-07$8.69$8.6951,600
1985-08-06$8.69$8.6953,600
1985-08-05$8.81$8.8151,200
1985-08-02$8.81$8.8124,800
1985-08-01$8.88$8.8723,200
1985-07-31$8.88$8.8742,800
1985-07-30$8.91$8.9187,200
1985-07-29$8.88$8.8773,600
1985-07-26$8.91$8.9181,200
1985-07-25$9.19$9.1963,600
1985-07-24$9.34$9.34444,400
1985-07-23$9.63$9.6283,200
1985-07-22$9.94$9.9498,000
1985-07-19$10.00$10.0088,400
1985-07-18$10.03$10.0335,600
1985-07-17$10.00$10.0087,600
1985-07-16$9.97$9.97109,600
1985-07-15$9.91$9.91306,400
1985-07-12$9.78$9.7838,000
1985-07-11$9.69$9.6934,400
1985-07-10$9.66$9.6632,400
1985-07-09$9.53$9.5352,800
1985-07-08$9.56$9.5628,400
1985-07-05$9.50$9.5038,800
1985-07-03$9.41$9.4124,800
1985-07-02$9.25$9.2544,000
1985-07-01$9.16$9.1674,400
1985-06-28$9.09$9.0946,400
1985-06-27$9.06$9.0628,400
1985-06-26$9.00$9.0029,600
1985-06-25$9.06$9.0618,000
1985-06-24$9.06$9.0636,800
1985-06-21$9.00$9.0018,400
1985-06-20$8.97$8.9727,600
1985-06-19$8.94$8.9446,800
1985-06-18$8.94$8.9422,000
1985-06-17$8.91$8.918,400
1985-06-14$8.91$8.9131,200
1985-06-13$8.88$8.87136,000
1985-06-12$8.94$8.9469,200
1985-06-11$8.88$8.8727,600
1985-06-10$8.88$8.8743,600
1985-06-07$8.97$8.97127,200
1985-06-06$8.94$8.9440,400
1985-06-05$9.03$9.0316,400
1985-06-04$9.06$9.0681,200
1985-06-03$8.97$8.97104,400
1985-05-31$9.00$9.00158,800
1985-05-30$8.97$8.9740,000
1985-05-29$8.94$8.9430,800
1985-05-28$8.88$8.87190,800
1985-05-24$9.00$9.0074,400
1985-05-23$9.03$9.0324,000
1985-05-22$9.03$9.03112,400
1985-05-21$9.13$9.1227,200
1985-05-20$9.09$9.0952,400
1985-05-17$8.88$8.8723,600
1985-05-16$8.81$8.8145,600
1985-05-15$8.81$8.8136,800
1985-05-14$8.84$8.8497,200
1985-05-13$8.81$8.8122,400
1985-05-10$8.72$8.7236,400
1985-05-09$8.78$8.7828,400
1985-05-08$8.78$8.7878,800
1985-05-07$8.63$8.6281,600
1985-05-06$8.56$8.5640,400
1985-05-03$8.50$8.5061,200
1985-05-02$8.47$8.4735,200
1985-05-01$8.44$8.44130,800
1985-04-30$8.47$8.4792,400
1985-04-29$8.50$8.5027,600
1985-04-26$8.59$8.5932,800
1985-04-25$8.53$8.5318,400
1985-04-24$8.50$8.5083,200
1985-04-23$8.66$8.66279,600
1985-04-22$8.63$8.6256,000
1985-04-19$8.66$8.66104,400
1985-04-18$8.63$8.6254,000
1985-04-17$8.69$8.69176,400
1985-04-16$8.72$8.72131,200
1985-04-15$8.69$8.69112,800
1985-04-12$8.53$8.5362,400
1985-04-11$8.44$8.44224,400
1985-04-10$8.44$8.4428,800
1985-04-09$8.41$8.4152,800
1985-04-08$8.44$8.44106,000
1985-04-04$8.41$8.4156,000
1985-04-03$8.38$8.3761,600
1985-04-02$8.28$8.2870,000
1985-04-01$8.19$8.1953,200
1985-03-29$8.03$8.0312,400
1985-03-28$8.00$8.0044,400
1985-03-27$8.03$8.0347,600
1985-03-26$8.06$8.0662,000
1985-03-25$7.94$7.9449,200
1985-03-22$7.81$7.8126,400
1985-03-21$7.88$7.8725,600
1985-03-20$7.75$7.7574,000
1985-03-19$7.75$7.7533,600
1985-03-18$7.72$7.7220,800
1985-03-15$7.63$7.62145,600
1985-03-14$7.59$7.59100,400
1985-03-13$7.56$7.5637,600
1985-03-12$7.59$7.5927,600
1985-03-11$7.59$7.5928,000
1985-03-08$7.59$7.5960,400
1985-03-07$7.53$7.5356,800
1985-03-06$7.50$7.5057,200
1985-03-05$7.59$7.5927,200
1985-03-04$7.53$7.53114,400
1985-03-01$7.50$7.5072,000
1985-02-28$7.47$7.4738,000
1985-02-27$7.47$7.4724,400
1985-02-26$7.38$7.3741,600
1985-02-25$7.38$7.37550,000
1985-02-22$7.44$7.4457,600
1985-02-21$7.47$7.4744,000
1985-02-20$7.50$7.5068,000
1985-02-19$7.53$7.5388,400
1985-02-15$7.44$7.4413,200
1985-02-14$7.50$7.5036,000
1985-02-13$7.44$7.4420,800
1985-02-12$7.47$7.4762,000
1985-02-11$7.38$7.37135,200
1985-02-08$7.47$7.4779,600
1985-02-07$7.44$7.4436,400
1985-02-06$7.41$7.4146,000
1985-02-05$7.38$7.37141,200
1985-02-04$7.34$7.3416,000
1985-02-01$7.38$7.3727,200
1985-01-31$7.34$7.3460,800
1985-01-30$7.47$7.4726,800
1985-01-29$7.44$7.4443,600
1985-01-28$7.44$7.4433,200
1985-01-25$7.41$7.41166,000
1985-01-24$7.59$7.5944,400
1985-01-23$7.59$7.5919,200
1985-01-22$7.63$7.6224,000
1985-01-21$7.63$7.6290,000
1985-01-18$7.63$7.6230,400
1985-01-17$7.66$7.6685,600
1985-01-16$7.69$7.69174,400
1985-01-15$7.59$7.5994,800
1985-01-14$7.63$7.6255,600
1985-01-11$7.59$7.5923,600
1985-01-10$7.63$7.6286,400
1985-01-09$7.59$7.5938,000
1985-01-08$7.53$7.53114,000
1985-01-07$7.50$7.5046,400
1985-01-04$7.38$7.3798,800
1985-01-03$7.31$7.3149,600
1985-01-02$7.38$7.37122,800