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 — 1981

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1981-12-31$4.81$4.8116,800
1981-12-30$4.81$4.8121,200
1981-12-29$4.84$4.8434,800
1981-12-28$4.88$4.8716,000
1981-12-24$4.78$4.783,200
1981-12-23$4.78$4.7875,200
1981-12-22$4.81$4.8117,600
1981-12-21$4.97$4.9719,600
1981-12-18$5.03$5.0322,400
1981-12-17$5.06$5.0678,000
1981-12-16$5.09$5.0912,400
1981-12-15$5.09$5.0926,800
1981-12-14$5.03$5.0315,200
1981-12-11$5.16$5.16100,400
1981-12-10$5.13$5.1212,400
1981-12-09$5.09$5.0917,600
1981-12-08$5.19$5.1921,600
1981-12-07$5.19$5.1925,600
1981-12-04$5.25$5.2520,800
1981-12-03$5.06$5.069,200
1981-12-02$5.09$5.0995,200
1981-12-01$5.13$5.1214,800
1981-11-30$5.09$5.0925,600
1981-11-27$5.16$5.169,600
1981-11-25$5.19$5.1916,400
1981-11-24$5.19$5.1936,400
1981-11-23$5.22$5.2220,000
1981-11-20$5.22$5.2234,000
1981-11-19$5.16$5.1632,800
1981-11-18$5.28$5.2810,400
1981-11-17$5.28$5.2834,000
1981-11-16$5.16$5.1630,800
1981-11-13$5.31$5.3150,400
1981-11-12$5.31$5.31165,200
1981-11-11$5.09$5.0977,600
1981-11-10$5.13$5.1237,600
1981-11-09$5.09$5.0928,000
1981-11-06$5.03$5.0368,400
1981-11-05$4.91$4.9112,000
1981-11-04$4.88$4.8715,200
1981-11-03$4.88$4.8731,600
1981-11-02$4.88$4.87388,400
1981-10-30$4.75$4.75188,000
1981-10-29$4.63$4.628,000
1981-10-28$4.59$4.598,400
1981-10-27$4.63$4.62116,800
1981-10-26$4.63$4.6210,000
1981-10-23$4.78$4.783,600
1981-10-22$4.78$4.7819,200
1981-10-21$4.75$4.758,800
1981-10-20$4.78$4.787,600
1981-10-19$4.66$4.667,600
1981-10-16$4.75$4.7511,600
1981-10-15$4.78$4.7810,400
1981-10-14$4.78$4.7810,400
1981-10-13$4.84$4.8416,000
1981-10-12$4.78$4.7810,800
1981-10-09$4.84$4.846,800
1981-10-08$4.84$4.8412,000
1981-10-07$4.75$4.755,600
1981-10-06$4.78$4.7868,800
1981-10-05$4.78$4.7831,600
1981-10-02$4.78$4.7872,000
1981-10-01$4.78$4.787,600
1981-09-30$4.75$4.7518,400
1981-09-29$4.78$4.78566,000
1981-09-28$4.81$4.8120,400
1981-09-25$4.78$4.7812,000
1981-09-24$4.84$4.8451,200
1981-09-23$4.75$4.7528,400
1981-09-22$4.75$4.7579,600
1981-09-21$4.78$4.7845,600
1981-09-18$4.69$4.6933,600
1981-09-17$4.69$4.6959,200
1981-09-16$4.69$4.6910,000
1981-09-15$4.75$4.7515,200
1981-09-14$4.75$4.7512,000
1981-09-11$4.75$4.7523,200
1981-09-10$4.75$4.7530,400
1981-09-09$4.63$4.6214,400
1981-09-08$4.63$4.6228,800
1981-09-04$4.63$4.6296,400
1981-09-03$4.56$4.5685,600
1981-09-02$4.53$4.53195,600
1981-09-01$4.56$4.5616,800
1981-08-31$4.47$4.4726,000
1981-08-28$4.41$4.41138,800
1981-08-27$4.25$4.2533,600
1981-08-26$4.22$4.2248,000
1981-08-25$4.31$4.3131,600
1981-08-24$4.34$4.3410,400
1981-08-21$4.47$4.4718,400
1981-08-20$4.47$4.4710,000
1981-08-19$4.56$4.5633,200
1981-08-18$4.41$4.4146,400
1981-08-17$4.53$4.5311,600
1981-08-14$4.63$4.6222,000
1981-08-13$4.63$4.6214,800
1981-08-12$4.66$4.6625,600
1981-08-11$4.63$4.62134,400
1981-08-10$4.56$4.5622,000
1981-08-07$4.56$4.5612,400
1981-08-06$4.47$4.4718,400
1981-08-05$4.47$4.4721,200
1981-08-04$4.50$4.505,600
1981-08-03$4.44$4.4414,400
1981-07-31$4.38$4.3723,200
1981-07-30$4.31$4.3173,600
1981-07-29$4.41$4.417,200
1981-07-28$4.44$4.4416,400
1981-07-27$4.47$4.4775,600
1981-07-24$4.69$4.698,800
1981-07-23$4.72$4.7217,600
1981-07-22$4.75$4.7573,600
1981-07-21$4.69$4.694,000
1981-07-20$4.69$4.6912,000
1981-07-17$4.78$4.789,200
1981-07-16$4.69$4.6911,600
1981-07-15$4.69$4.6912,000
1981-07-14$4.66$4.6615,200
1981-07-13$4.78$4.7814,000
1981-07-10$4.69$4.698,800
1981-07-09$4.72$4.7215,200
1981-07-08$4.69$4.6918,400
1981-07-07$4.66$4.666,800
1981-07-06$4.66$4.66284,800
1981-07-02$4.69$4.69108,400
1981-07-01$4.69$4.6924,800
1981-06-30$4.66$4.6622,000
1981-06-29$4.59$4.5927,600
1981-06-26$4.63$4.6220,400
1981-06-25$4.63$4.626,000
1981-06-24$4.63$4.6239,200
1981-06-23$4.66$4.6626,000
1981-06-22$4.75$4.7526,000
1981-06-19$4.66$4.6659,600
1981-06-18$4.69$4.6924,800
1981-06-17$4.69$4.6931,600
1981-06-16$4.66$4.6626,800
1981-06-15$4.53$4.5332,000
1981-06-12$4.53$4.5344,800
1981-06-11$4.50$4.5032,800
1981-06-10$4.31$4.3144,400
1981-06-09$4.16$4.1612,000
1981-06-08$4.25$4.2510,800
1981-06-05$4.16$4.1622,400
1981-06-04$4.16$4.1633,200
1981-06-03$4.13$4.1213,600
1981-06-02$4.25$4.2511,200
1981-06-01$4.28$4.2848,000
1981-05-29$4.19$4.1931,600
1981-05-28$4.13$4.1234,000
1981-05-27$4.00$4.007,600
1981-05-26$4.06$4.0619,200
1981-05-22$3.97$3.9720,400
1981-05-21$4.09$4.095,600
1981-05-20$4.13$4.126,800
1981-05-19$4.06$4.0618,800
1981-05-18$4.09$4.0934,000
1981-05-15$4.09$4.0932,800
1981-05-14$4.13$4.1213,200
1981-05-13$4.03$4.038,400
1981-05-12$3.94$3.9429,200
1981-05-11$3.94$3.9417,200
1981-05-08$3.91$3.9110,400
1981-05-07$3.91$3.9116,800
1981-05-06$3.94$3.9419,200
1981-05-05$3.97$3.9714,800
1981-05-04$4.00$4.0016,400
1981-05-01$4.00$4.0015,200
1981-04-30$4.09$4.0910,000
1981-04-29$4.09$4.0942,000
1981-04-28$4.00$4.0022,000
1981-04-27$3.97$3.9783,600
1981-04-24$4.22$4.228,800
1981-04-23$4.28$4.2812,400
1981-04-22$4.25$4.258,400
1981-04-21$4.22$4.2211,200
1981-04-20$4.31$4.3120,000
1981-04-16$4.16$4.1610,400
1981-04-15$4.09$4.0914,000
1981-04-14$4.19$4.196,800
1981-04-13$4.25$4.2524,000
1981-04-10$4.09$4.0914,800
1981-04-09$4.22$4.2217,200
1981-04-08$4.16$4.168,800
1981-04-07$4.16$4.169,600
1981-04-06$4.13$4.126,000
1981-04-03$4.19$4.199,600
1981-04-02$4.31$4.3116,000
1981-04-01$4.09$4.0911,200
1981-03-31$4.06$4.0612,000
1981-03-30$4.16$4.1622,000
1981-03-27$4.16$4.1642,400
1981-03-26$4.09$4.0911,600
1981-03-25$4.06$4.067,600
1981-03-24$4.09$4.0914,800
1981-03-23$4.16$4.169,600
1981-03-20$4.25$4.258,400
1981-03-19$4.25$4.259,200
1981-03-18$4.16$4.162,400
1981-03-17$4.13$4.1223,600
1981-03-16$4.13$4.1225,200
1981-03-13$4.13$4.1211,200
1981-03-12$4.13$4.129,200
1981-03-11$4.13$4.124,800
1981-03-10$4.03$4.0312,800
1981-03-09$4.09$4.0913,200
1981-03-06$4.16$4.166,800
1981-03-05$4.16$4.1612,800
1981-03-04$4.19$4.1920,800
1981-03-03$4.06$4.0618,400
1981-03-02$3.97$3.975,600
1981-02-27$3.97$3.9713,200
1981-02-26$4.06$4.065,200
1981-02-25$4.00$4.005,200
1981-02-24$3.94$3.9412,000
1981-02-23$3.94$3.946,800
1981-02-20$3.94$3.943,200
1981-02-19$3.91$3.9141,200
1981-02-18$3.91$3.9130,400
1981-02-17$3.97$3.9710,400
1981-02-13$4.00$4.004,400
1981-02-12$4.00$4.006,000
1981-02-11$4.03$4.0314,000
1981-02-10$3.91$3.915,600
1981-02-09$4.06$4.0617,200
1981-02-06$4.06$4.0646,400
1981-02-05$4.00$4.006,800
1981-02-04$4.06$4.065,200
1981-02-03$4.06$4.065,200
1981-02-02$4.09$4.098,400
1981-01-30$4.06$4.067,200
1981-01-29$4.03$4.0310,800
1981-01-28$4.06$4.068,800
1981-01-27$4.00$4.0014,000
1981-01-26$4.06$4.0611,600
1981-01-23$4.25$4.2517,600
1981-01-22$4.31$4.3112,000
1981-01-21$4.22$4.2217,600
1981-01-20$4.22$4.224,000
1981-01-19$4.28$4.285,600
1981-01-16$4.31$4.3114,000
1981-01-15$4.28$4.289,200
1981-01-14$4.34$4.347,600
1981-01-13$4.41$4.4120,400
1981-01-12$4.31$4.319,200
1981-01-09$4.38$4.376,400
1981-01-08$4.25$4.2512,400
1981-01-07$4.38$4.378,400
1981-01-06$4.44$4.4438,400
1981-01-05$4.38$4.3720,000
1981-01-02$4.22$4.225,200