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 — 1986

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1986-12-31$12.50$12.50231,600
1986-12-30$12.72$12.72297,600
1986-12-29$12.75$12.7555,600
1986-12-26$12.94$12.9423,200
1986-12-24$12.94$12.9412,400
1986-12-23$13.00$13.00122,800
1986-12-22$13.09$13.0963,200
1986-12-19$13.22$13.2250,800
1986-12-18$13.13$13.1263,200
1986-12-17$13.19$13.1968,800
1986-12-16$13.34$13.3468,400
1986-12-15$13.25$13.2598,400
1986-12-12$13.28$13.2846,800
1986-12-11$13.28$13.2846,000
1986-12-10$13.22$13.2243,600
1986-12-09$13.28$13.2845,600
1986-12-08$13.25$13.2589,200
1986-12-05$13.25$13.25138,800
1986-12-04$13.31$13.3129,200
1986-12-03$13.44$13.4471,200
1986-12-02$13.47$13.4768,000
1986-12-01$13.19$13.1947,600
1986-11-28$13.22$13.2216,400
1986-11-26$13.31$13.3177,600
1986-11-25$13.31$13.3134,400
1986-11-24$13.25$13.2530,000
1986-11-21$13.28$13.2833,200
1986-11-20$13.03$13.0328,800
1986-11-19$12.88$12.8762,400
1986-11-18$12.75$12.7553,600
1986-11-17$13.06$13.0642,000
1986-11-14$13.25$13.2534,400
1986-11-13$13.31$13.3190,000
1986-11-12$13.44$13.4474,800
1986-11-11$13.44$13.4454,400
1986-11-10$13.44$13.4423,200
1986-11-07$13.41$13.4124,400
1986-11-06$13.41$13.4128,000
1986-11-05$13.41$13.4158,800
1986-11-04$13.19$13.1934,000
1986-11-03$13.28$13.2850,000
1986-10-31$13.34$13.34274,000
1986-10-30$13.22$13.2250,000
1986-10-29$13.16$13.1630,400
1986-10-28$13.03$13.0359,600
1986-10-27$13.19$13.19137,200
1986-10-24$13.25$13.2543,200
1986-10-23$13.53$13.5327,200
1986-10-22$13.50$13.5054,400
1986-10-21$13.50$13.5036,800
1986-10-20$13.38$13.3753,600
1986-10-17$13.44$13.4451,600
1986-10-16$13.56$13.5670,800
1986-10-15$13.53$13.5331,200
1986-10-14$13.56$13.5650,800
1986-10-13$13.47$13.4711,600
1986-10-10$13.50$13.5030,400
1986-10-09$13.59$13.5925,200
1986-10-08$13.66$13.6630,800
1986-10-07$13.69$13.69153,600
1986-10-06$13.69$13.6952,800
1986-10-03$13.47$13.4744,800
1986-10-02$13.25$13.2523,200
1986-10-01$13.19$13.1918,800
1986-09-30$13.22$13.2219,200
1986-09-29$13.06$13.0674,800
1986-09-26$13.31$13.3138,800
1986-09-25$13.31$13.3138,000
1986-09-24$13.34$13.3442,800
1986-09-23$13.22$13.2246,000
1986-09-22$13.16$13.1623,200
1986-09-19$13.00$13.0034,000
1986-09-18$13.00$13.0034,000
1986-09-17$13.06$13.0678,000
1986-09-16$12.75$12.7573,600
1986-09-15$12.75$12.7594,400
1986-09-12$12.63$12.62192,000
1986-09-11$12.56$12.56123,200
1986-09-10$13.25$13.2534,000
1986-09-09$13.50$13.5053,200
1986-09-08$13.13$13.12112,000
1986-09-05$13.75$13.75129,600
1986-09-04$14.03$14.0368,400
1986-09-03$14.06$14.0670,000
1986-09-02$14.19$14.1954,400
1986-08-29$14.28$14.2834,400
1986-08-28$14.38$14.3772,400
1986-08-27$14.50$14.5060,400
1986-08-26$14.38$14.3740,400
1986-08-25$14.34$14.3467,200
1986-08-22$14.75$14.7558,400
1986-08-21$14.88$14.8798,000
1986-08-20$14.94$14.9495,600
1986-08-19$14.75$14.7584,000
1986-08-18$14.38$14.37134,400
1986-08-15$13.97$13.97171,200
1986-08-14$13.94$13.94101,600
1986-08-13$13.97$13.9740,000
1986-08-12$13.88$13.87116,000
1986-08-11$14.00$14.0068,400
1986-08-08$13.88$13.8776,000
1986-08-07$13.88$13.8778,400
1986-08-06$14.06$14.0632,400
1986-08-05$14.06$14.0637,600
1986-08-04$14.00$14.0056,800
1986-08-01$13.84$13.8434,400
1986-07-31$13.88$13.8749,200
1986-07-30$13.91$13.9147,600
1986-07-29$14.03$14.03100,000
1986-07-28$14.13$14.1277,200
1986-07-25$14.13$14.1254,800
1986-07-24$14.19$14.19123,600
1986-07-23$13.75$13.7580,000
1986-07-22$13.63$13.6258,000
1986-07-21$13.34$13.3434,400
1986-07-18$13.25$13.2553,600
1986-07-17$13.25$13.2529,200
1986-07-16$13.22$13.22154,800
1986-07-15$13.00$13.0073,600
1986-07-14$12.97$12.9727,600
1986-07-11$12.88$12.8746,800
1986-07-10$12.72$12.7272,400
1986-07-09$12.47$12.4732,400
1986-07-08$12.44$12.4432,000
1986-07-07$12.50$12.5051,600
1986-07-03$12.41$12.4130,400
1986-07-02$12.38$12.37173,600
1986-07-01$12.34$12.3434,800
1986-06-30$12.38$12.3731,600
1986-06-27$12.34$12.34114,400
1986-06-26$12.38$12.3726,800
1986-06-25$12.38$12.3738,000
1986-06-24$12.34$12.34314,800
1986-06-23$12.22$12.2296,000
1986-06-20$12.28$12.2850,000
1986-06-19$12.25$12.2550,000
1986-06-18$12.22$12.2220,800
1986-06-17$12.22$12.2294,400
1986-06-16$12.13$12.1235,600
1986-06-13$12.00$12.0018,800
1986-06-12$12.00$12.0016,800
1986-06-11$12.09$12.0984,400
1986-06-10$11.97$11.9756,400
1986-06-09$11.94$11.9435,200
1986-06-06$12.00$12.0051,600
1986-06-05$12.22$12.2224,400
1986-06-04$12.13$12.1228,000
1986-06-03$11.94$11.9416,800
1986-06-02$11.91$11.9111,200
1986-05-30$11.91$11.9126,400
1986-05-29$11.91$11.918,800
1986-05-28$11.91$11.9117,600
1986-05-27$11.97$11.9763,600
1986-05-23$11.81$11.8125,200
1986-05-22$11.84$11.8461,200
1986-05-21$11.66$11.66114,400
1986-05-20$11.44$11.4442,000
1986-05-19$11.41$11.4126,800
1986-05-16$11.34$11.3440,400
1986-05-15$11.34$11.34194,400
1986-05-14$11.31$11.3144,400
1986-05-13$11.31$11.31121,600
1986-05-12$11.31$11.3123,200
1986-05-09$11.31$11.31120,800
1986-05-08$11.28$11.2825,600
1986-05-07$11.28$11.2862,000
1986-05-06$11.47$11.4722,400
1986-05-05$11.50$11.5015,200
1986-05-02$11.47$11.4738,000
1986-05-01$11.31$11.3193,200
1986-04-30$11.53$11.5336,800
1986-04-29$11.75$11.7552,000
1986-04-28$12.00$12.0013,600
1986-04-25$12.00$12.0077,600
1986-04-24$12.09$12.0925,200
1986-04-23$12.22$12.2228,000
1986-04-22$12.28$12.2839,200
1986-04-21$12.31$12.3125,200
1986-04-18$12.25$12.2541,600
1986-04-17$12.09$12.095,200
1986-04-16$12.03$12.0376,800
1986-04-15$11.84$11.8422,000
1986-04-14$11.72$11.7240,000
1986-04-11$11.69$11.6926,800
1986-04-10$11.78$11.7815,200
1986-04-09$11.75$11.7523,200
1986-04-08$11.72$11.7244,800
1986-04-07$11.69$11.6937,200
1986-04-04$11.66$11.6646,000
1986-04-03$11.75$11.7536,800
1986-04-02$11.69$11.6927,200
1986-04-01$11.69$11.6953,600
1986-03-31$11.72$11.7225,200
1986-03-27$11.63$11.6247,600
1986-03-26$11.59$11.5958,000
1986-03-25$11.38$11.3722,000
1986-03-24$11.41$11.4132,800
1986-03-21$11.41$11.4178,400
1986-03-20$11.44$11.4428,800
1986-03-19$11.50$11.5037,200
1986-03-18$11.63$11.6250,800
1986-03-17$11.47$11.4758,800
1986-03-14$11.50$11.5032,400
1986-03-13$11.44$11.4424,000
1986-03-12$11.50$11.5092,800
1986-03-11$11.50$11.50200,000
1986-03-10$11.44$11.4449,200
1986-03-07$11.34$11.3434,400
1986-03-06$11.34$11.3420,400
1986-03-05$11.34$11.3426,800
1986-03-04$11.38$11.3748,000
1986-03-03$11.38$11.3799,600
1986-02-28$11.34$11.3462,000
1986-02-27$11.38$11.3748,800
1986-02-26$11.34$11.3439,200
1986-02-25$11.41$11.4133,600
1986-02-24$11.31$11.3175,600
1986-02-21$11.28$11.2836,400
1986-02-20$11.28$11.2827,200
1986-02-19$11.28$11.28120,400
1986-02-18$11.31$11.3189,200
1986-02-14$11.03$11.0327,600
1986-02-13$10.88$10.8734,800
1986-02-12$10.75$10.7531,600
1986-02-11$10.66$10.6626,400
1986-02-10$10.66$10.6646,400
1986-02-07$10.56$10.56148,400
1986-02-06$10.69$10.6948,000
1986-02-05$10.69$10.6947,200
1986-02-04$10.59$10.5924,000
1986-02-03$10.53$10.5354,400
1986-01-31$10.47$10.4730,400
1986-01-30$10.41$10.4124,000
1986-01-29$10.41$10.4157,600
1986-01-28$10.38$10.37120,000
1986-01-27$10.22$10.22295,600
1986-01-24$10.41$10.41283,600
1986-01-23$10.22$10.2218,400
1986-01-22$10.22$10.2256,400
1986-01-21$10.09$10.0946,800
1986-01-20$9.97$9.9721,200
1986-01-17$10.03$10.0327,600
1986-01-16$10.06$10.0631,600
1986-01-15$9.88$9.8731,200
1986-01-14$9.78$9.7854,800
1986-01-13$9.94$9.9428,400
1986-01-10$10.03$10.0323,600
1986-01-09$10.13$10.1278,000
1986-01-08$10.22$10.2237,200
1986-01-07$10.19$10.1931,200
1986-01-06$10.19$10.1923,600
1986-01-03$10.16$10.1658,800
1986-01-02$10.13$10.1251,200