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.

View year

Historical Stock Price — 1987

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1987-12-31$10.88$11.6027,200
1987-12-30$10.84$11.5715,200
1987-12-29$10.78$11.5012,000
1987-12-28$10.78$11.5017,600
1987-12-24$11.00$11.7416,000
1987-12-23$10.94$11.6720,800
1987-12-22$10.81$11.5432,000
1987-12-21$10.84$11.5717,600
1987-12-18$10.78$11.5048,000
1987-12-17$10.75$11.4725,600
1987-12-16$10.84$11.5714,000
1987-12-15$10.88$11.6049,600
1987-12-14$10.81$11.5458,400
1987-12-11$10.78$11.5020,800
1987-12-10$10.81$11.5448,800
1987-12-09$11.00$11.748,800
1987-12-08$10.94$11.6711,200
1987-12-07$10.81$11.5431,200
1987-12-04$10.91$11.6441,200
1987-12-03$11.03$11.7740,800
1987-12-02$11.16$11.9048,000
1987-12-01$11.25$12.0024,800
1987-11-30$11.13$11.8726,800
1987-11-27$11.25$12.0015,200
1987-11-25$11.25$12.0034,000
1987-11-24$11.31$12.0736,000
1987-11-23$11.22$11.9739,600
1987-11-20$11.22$11.9745,600
1987-11-19$11.22$11.9715,600
1987-11-18$11.25$12.0038,800
1987-11-17$11.25$12.0050,800
1987-11-16$11.44$12.205,600
1987-11-13$11.50$12.279,200
1987-11-12$11.53$12.30139,200
1987-11-11$11.56$12.3431,200
1987-11-10$11.63$12.4020,800
1987-11-09$11.53$12.305,200
1987-11-06$11.53$12.3043,600
1987-11-05$11.31$12.0766,400
1987-11-04$11.25$12.0016,800
1987-11-03$11.31$12.079,600
1987-11-02$11.28$12.0435,600
1987-10-30$11.44$12.2047,200
1987-10-29$11.19$11.9417,200
1987-10-28$11.06$11.8043,200
1987-10-27$11.16$11.9021,200
1987-10-26$11.03$11.7718,000
1987-10-23$11.38$11.9325,600
1987-10-22$11.50$12.0648,000
1987-10-21$11.56$12.1250,800
1987-10-20$11.31$11.8684,400
1987-10-19$11.31$11.8684,000
1987-10-16$11.81$12.3942,000
1987-10-15$11.91$12.48142,000
1987-10-14$11.81$12.3974,800
1987-10-13$11.81$12.3915,200
1987-10-12$11.81$12.3926,800
1987-10-09$11.78$12.3514,000
1987-10-08$11.72$12.2912,000
1987-10-07$11.69$12.2572,400
1987-10-06$11.72$12.2915,600
1987-10-05$11.72$12.2921,600
1987-10-02$11.69$12.256,400
1987-10-01$11.66$12.2268,800
1987-09-30$11.75$12.3218,800
1987-09-29$11.72$12.2915,600
1987-09-28$11.63$12.1950,000
1987-09-25$11.47$12.0334,400
1987-09-24$11.50$12.0614,000
1987-09-23$11.47$12.0323,200
1987-09-22$11.56$12.1246,400
1987-09-21$11.44$11.9916,800
1987-09-18$11.50$12.0625,600
1987-09-17$11.66$12.2228,800
1987-09-16$11.72$12.2925,200
1987-09-15$11.84$12.4217,200
1987-09-14$11.91$12.4818,400
1987-09-11$11.88$12.4522,400
1987-09-10$11.88$12.459,600
1987-09-09$11.94$12.5248,000
1987-09-08$11.94$12.52104,800
1987-09-04$11.97$12.5556,800
1987-09-03$11.91$12.4821,200
1987-09-02$11.88$12.4514,400
1987-09-01$12.03$12.6253,600
1987-08-31$12.06$12.6535,600
1987-08-28$12.00$12.5848,000
1987-08-27$12.06$12.6577,200
1987-08-26$12.09$12.6852,000
1987-08-25$12.03$12.6224,000
1987-08-24$12.03$12.6280,400
1987-08-21$12.06$12.6520,000
1987-08-20$12.13$12.7176,000
1987-08-19$11.97$12.5513,200
1987-08-18$12.00$12.5820,800
1987-08-17$12.06$12.6565,200
1987-08-14$12.00$12.5835,200
1987-08-13$11.88$12.4527,200
1987-08-12$11.81$12.3972,800
1987-08-11$11.69$12.25216,800
1987-08-10$11.63$12.1926,800
1987-08-07$11.56$12.1250,400
1987-08-06$11.69$12.2534,400
1987-08-05$11.63$12.1963,600
1987-08-04$11.63$12.1958,000
1987-08-03$11.69$12.2542,400
1987-07-31$11.72$12.2953,200
1987-07-30$11.78$12.3521,600
1987-07-29$11.75$12.3222,400
1987-07-28$11.75$12.32130,400
1987-07-27$11.75$12.32193,600
1987-07-24$11.94$12.311,753,600
1987-07-23$11.94$12.31104,800
1987-07-22$11.97$12.3426,800
1987-07-21$12.00$12.38112,000
1987-07-20$12.00$12.3825,600
1987-07-17$12.06$12.4420,400
1987-07-16$12.06$12.4417,200
1987-07-15$11.94$12.3126,400
1987-07-14$11.84$12.2245,200
1987-07-13$11.88$12.2520,800
1987-07-10$11.84$12.2217,600
1987-07-09$11.81$12.1851,600
1987-07-08$11.84$12.2235,200
1987-07-07$11.84$12.2236,400
1987-07-06$11.81$12.1823,200
1987-07-02$11.94$12.3111,200
1987-07-01$11.91$12.2880,000
1987-06-30$12.00$12.3836,000
1987-06-29$11.97$12.3412,400
1987-06-26$11.97$12.349,600
1987-06-25$11.91$12.2818,800
1987-06-24$11.97$12.3433,200
1987-06-23$11.97$12.3495,200
1987-06-22$11.97$12.3462,800
1987-06-19$11.97$12.3495,200
1987-06-18$11.91$12.2825,600
1987-06-17$11.88$12.2520,000
1987-06-16$11.91$12.2851,600
1987-06-15$11.97$12.3434,800
1987-06-12$11.91$12.2852,400
1987-06-11$11.84$12.2216,800
1987-06-10$11.94$12.3197,600
1987-06-09$11.72$12.0935,600
1987-06-08$11.75$12.1230,000
1987-06-05$11.69$12.0522,400
1987-06-04$11.66$12.0230,000
1987-06-03$11.56$11.9312,800
1987-06-02$11.56$11.9322,000
1987-06-01$11.75$12.1230,800
1987-05-29$11.81$12.1829,200
1987-05-28$11.56$11.9333,200
1987-05-27$11.66$12.0250,000
1987-05-26$11.66$12.0258,400
1987-05-22$11.63$11.9912,000
1987-05-21$11.63$11.9932,000
1987-05-20$11.41$11.7634,400
1987-05-19$11.53$11.8977,600
1987-05-18$11.50$11.8618,800
1987-05-15$11.50$11.8622,000
1987-05-14$11.66$12.0213,600
1987-05-13$11.69$12.05126,800
1987-05-12$11.63$11.9931,600
1987-05-11$11.75$12.1237,200
1987-05-08$11.75$12.12165,200
1987-05-07$11.75$12.1264,000
1987-05-06$11.75$12.1243,200
1987-05-05$11.75$12.1284,800
1987-05-04$11.41$11.7650,000
1987-05-01$11.03$11.3822,000
1987-04-30$11.00$11.3544,400
1987-04-29$10.94$11.2851,200
1987-04-28$10.84$11.1868,800
1987-04-27$10.75$11.09132,000
1987-04-24$11.00$11.35211,600
1987-04-23$11.50$11.6778,000
1987-04-22$11.50$11.67106,400
1987-04-21$11.56$11.7367,600
1987-04-20$11.59$11.76142,800
1987-04-16$11.75$11.9262,000
1987-04-15$11.38$11.54121,200
1987-04-14$11.00$11.1678,800
1987-04-13$11.41$11.5776,000
1987-04-10$11.41$11.57168,800
1987-04-09$11.69$11.8686,400
1987-04-08$11.94$12.1180,800
1987-04-07$11.94$12.1133,200
1987-04-06$12.16$12.3326,000
1987-04-03$12.25$12.4345,200
1987-04-02$12.28$12.46311,600
1987-04-01$12.44$12.6222,000
1987-03-31$12.50$12.6823,600
1987-03-30$12.44$12.6274,800
1987-03-27$12.50$12.6820,800
1987-03-26$12.59$12.7720,800
1987-03-25$12.59$12.7726,800
1987-03-24$12.53$12.7129,200
1987-03-23$12.53$12.7139,200
1987-03-20$12.50$12.6882,800
1987-03-19$12.38$12.5580,000
1987-03-18$12.50$12.6894,400
1987-03-17$12.75$12.9310,000
1987-03-16$12.81$13.0030,800
1987-03-13$12.84$13.0321,600
1987-03-12$12.88$13.0620,000
1987-03-11$12.88$13.0638,800
1987-03-10$12.88$13.06119,600
1987-03-09$12.94$13.1259,600
1987-03-06$12.94$13.1238,400
1987-03-05$12.94$13.12120,000
1987-03-04$12.84$13.0360,000
1987-03-03$12.88$13.06113,200
1987-03-02$13.03$13.2241,600
1987-02-27$13.03$13.2238,400
1987-02-26$13.00$13.19100,000
1987-02-25$13.19$13.3841,200
1987-02-24$13.19$13.3898,000
1987-02-23$13.06$13.2580,800
1987-02-20$13.03$13.2248,400
1987-02-19$12.84$13.0389,600
1987-02-18$12.88$13.0663,600
1987-02-17$13.16$13.35267,600
1987-02-13$13.28$13.4733,200
1987-02-12$13.38$13.5716,800
1987-02-11$13.28$13.4792,400
1987-02-10$13.25$13.4451,200
1987-02-09$13.25$13.4467,200
1987-02-06$13.28$13.4721,600
1987-02-05$13.28$13.47130,000
1987-02-04$13.31$13.5013,200
1987-02-03$13.28$13.4715,200
1987-02-02$13.31$13.5013,200
1987-01-30$13.25$13.4426,800
1987-01-29$13.25$13.4446,400
1987-01-28$13.28$13.4743,200
1987-01-27$13.44$13.6367,600
1987-01-26$13.16$13.35199,600
1987-01-23$13.41$13.4161,200
1987-01-22$13.63$13.6246,000
1987-01-21$13.41$13.4162,000
1987-01-20$13.50$13.50261,200
1987-01-19$13.47$13.47125,600
1987-01-16$13.44$13.4474,400
1987-01-15$13.44$13.44255,600
1987-01-14$13.66$13.6694,800
1987-01-13$13.38$13.3754,400
1987-01-12$13.44$13.4430,400
1987-01-09$13.34$13.3438,000
1987-01-08$13.38$13.3740,800
1987-01-07$13.28$13.2846,400
1987-01-06$13.22$13.2241,600
1987-01-05$12.97$12.9746,400
1987-01-02$12.69$12.6945,200