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 — 1998

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1998-12-31$16.13$35.23227,000
1998-12-30$15.75$34.41100,200
1998-12-29$15.56$34.0059,000
1998-12-28$15.44$33.7275,400
1998-12-24$15.34$33.5297,200
1998-12-23$15.38$33.59100,400
1998-12-22$15.38$33.5997,400
1998-12-21$15.53$33.93137,400
1998-12-18$15.63$34.13210,800
1998-12-17$15.38$33.59141,200
1998-12-16$15.19$33.18101,200
1998-12-15$15.22$33.25257,400
1998-12-14$15.50$33.86231,400
1998-12-11$15.81$34.54160,000
1998-12-10$15.69$34.2778,000
1998-12-09$16.00$34.95173,600
1998-12-08$15.94$34.82185,800
1998-12-07$15.94$34.82125,800
1998-12-04$15.69$34.2793,000
1998-12-03$15.47$33.79110,600
1998-12-02$15.34$33.52137,000
1998-12-01$15.16$33.11175,800
1998-11-30$15.19$33.18150,200
1998-11-27$15.66$34.2022,400
1998-11-25$15.72$34.34153,800
1998-11-24$15.66$34.20147,600
1998-11-23$15.75$34.41183,400
1998-11-20$15.78$34.47242,000
1998-11-19$15.78$34.47101,000
1998-11-18$15.84$34.61156,400
1998-11-17$15.94$34.8294,000
1998-11-16$15.78$34.47166,800
1998-11-13$15.81$34.5494,400
1998-11-12$15.94$34.8298,000
1998-11-11$15.69$34.2767,400
1998-11-10$15.81$34.54228,200
1998-11-09$15.88$34.68112,600
1998-11-06$15.78$34.47168,800
1998-11-05$15.84$34.61166,600
1998-11-04$15.75$34.41108,800
1998-11-03$15.81$34.54266,800
1998-11-02$15.66$34.20183,400
1998-10-30$15.47$33.79176,600
1998-10-29$15.25$33.3175,000
1998-10-28$15.34$33.52714,600
1998-10-27$15.69$33.722,197,600
1998-10-26$15.78$33.93248,800
1998-10-23$15.88$34.13172,000
1998-10-22$15.88$34.13232,600
1998-10-21$15.75$33.86231,400
1998-10-20$16.09$34.60116,400
1998-10-19$16.50$35.47223,000
1998-10-16$16.47$35.40112,600
1998-10-15$16.63$35.74161,800
1998-10-14$16.34$35.13160,400
1998-10-13$16.00$34.40126,000
1998-10-12$16.00$34.40249,400
1998-10-09$16.22$34.87273,600
1998-10-08$16.59$35.67219,600
1998-10-07$17.00$36.55295,200
1998-10-06$16.44$35.34132,800
1998-10-05$16.50$35.47179,200
1998-10-02$16.47$35.40379,400
1998-10-01$16.06$34.53370,600
1998-09-30$16.03$34.46228,200
1998-09-29$15.72$33.79102,000
1998-09-28$15.63$33.59122,200
1998-09-25$15.56$33.46122,800
1998-09-24$15.63$33.59153,400
1998-09-23$15.53$33.3982,000
1998-09-22$15.44$33.19129,600
1998-09-21$15.56$33.46110,400
1998-09-18$15.31$32.92123,200
1998-09-17$15.31$32.9295,200
1998-09-16$15.34$32.98100,000
1998-09-15$15.22$32.72166,200
1998-09-14$15.03$32.3185,600
1998-09-11$14.81$31.8493,200
1998-09-10$15.13$32.5178,400
1998-09-09$15.00$32.2592,200
1998-09-08$14.91$32.04163,200
1998-09-04$15.25$32.78124,600
1998-09-03$14.97$32.18198,000
1998-09-02$14.84$31.91129,600
1998-09-01$15.09$32.45197,600
1998-08-31$15.03$32.31229,200
1998-08-28$14.97$32.18135,400
1998-08-27$14.94$32.11113,800
1998-08-26$15.13$32.5189,200
1998-08-25$15.13$32.51212,600
1998-08-24$15.19$32.65129,200
1998-08-21$15.06$32.38126,800
1998-08-20$15.06$32.38147,000
1998-08-19$15.19$32.65383,800
1998-08-18$15.13$32.51206,200
1998-08-17$15.03$32.31288,600
1998-08-14$14.97$32.18123,600
1998-08-13$14.59$31.37215,000
1998-08-12$14.84$31.91207,800
1998-08-11$14.28$30.70160,000
1998-08-10$14.50$31.17113,000
1998-08-07$14.47$31.10142,000
1998-08-06$14.16$30.43150,800
1998-08-05$14.22$30.57233,000
1998-08-04$14.13$30.36325,400
1998-08-03$14.19$30.50184,400
1998-07-31$14.66$31.51203,400
1998-07-30$14.84$31.91124,000
1998-07-29$14.97$32.18272,800
1998-07-28$15.13$31.982,147,200
1998-07-27$15.25$32.24939,400
1998-07-24$15.31$32.3792,400
1998-07-23$15.47$32.7089,000
1998-07-22$15.59$32.97242,200
1998-07-21$15.69$33.17169,800
1998-07-20$15.75$33.30125,400
1998-07-17$15.66$33.1080,400
1998-07-16$15.66$33.10232,200
1998-07-15$15.69$33.17391,200
1998-07-14$15.66$33.1095,800
1998-07-13$15.69$33.17237,800
1998-07-10$15.69$33.17238,800
1998-07-09$15.69$33.17246,200
1998-07-08$15.56$32.90329,600
1998-07-07$15.59$32.97255,000
1998-07-06$15.53$32.84103,600
1998-07-02$15.69$33.17167,800
1998-07-01$15.69$33.17279,800
1998-06-30$16.25$34.36741,400
1998-06-29$15.31$32.37328,000
1998-06-26$15.25$32.24369,000
1998-06-25$15.31$32.37162,000
1998-06-24$15.31$32.37160,000
1998-06-23$15.41$32.57189,600
1998-06-22$15.34$32.4498,200
1998-06-19$15.53$32.84210,400
1998-06-18$15.72$33.23256,800
1998-06-17$15.50$32.77255,200
1998-06-16$15.38$32.51267,400
1998-06-15$15.34$32.44168,000
1998-06-12$15.53$32.8490,800
1998-06-11$15.66$33.10152,200
1998-06-10$15.81$33.43172,200
1998-06-09$15.59$32.97143,600
1998-06-08$15.50$32.77336,200
1998-06-05$15.31$32.37102,200
1998-06-04$15.22$32.18290,600
1998-06-03$15.47$32.70327,000
1998-06-02$15.44$32.64183,800
1998-06-01$15.53$32.84398,000
1998-05-29$15.03$31.78306,200
1998-05-28$15.00$31.71134,800
1998-05-27$15.03$31.78138,400
1998-05-26$15.22$32.18151,400
1998-05-22$15.25$32.24119,800
1998-05-21$15.31$32.37197,200
1998-05-20$15.38$32.51146,800
1998-05-19$15.28$32.31165,400
1998-05-18$15.28$32.31194,400
1998-05-15$15.44$32.64241,600
1998-05-14$15.50$32.77138,400
1998-05-13$15.81$33.43500,800
1998-05-12$15.50$32.77226,400
1998-05-11$15.47$32.70259,600
1998-05-08$15.47$32.70271,400
1998-05-07$15.22$32.18235,200
1998-05-06$15.31$32.37249,400
1998-05-05$15.16$32.04221,600
1998-05-04$15.31$32.37218,600
1998-05-01$15.75$33.30283,600
1998-04-30$15.78$33.36257,800
1998-04-29$15.59$32.82548,600
1998-04-28$15.91$33.47349,200
1998-04-27$15.84$33.34225,800
1998-04-24$16.31$34.33211,000
1998-04-23$17.09$35.97260,200
1998-04-22$17.22$36.24289,200
1998-04-21$17.31$36.06427,400
1998-04-20$17.28$35.99994,000
1998-04-17$17.44$36.321,855,200
1998-04-16$17.22$35.86320,400
1998-04-15$16.88$35.1575,600
1998-04-14$16.81$35.0287,200
1998-04-13$16.69$34.76117,400
1998-04-09$16.75$34.89124,800
1998-04-08$16.66$34.69184,600
1998-04-07$16.69$34.76196,400
1998-04-06$16.81$35.02114,800
1998-04-03$16.81$35.02207,000
1998-04-02$16.81$35.02249,800
1998-04-01$16.84$35.08285,200
1998-03-31$16.84$35.08225,800
1998-03-30$16.50$34.3781,800
1998-03-27$16.56$34.50133,000
1998-03-26$16.63$34.63113,200
1998-03-25$16.72$34.82138,600
1998-03-24$16.88$35.15143,800
1998-03-23$16.75$34.89125,400
1998-03-20$16.75$34.89114,600
1998-03-19$16.66$34.6971,000
1998-03-18$16.66$34.69142,200
1998-03-17$16.44$34.2371,000
1998-03-16$16.44$34.2378,800
1998-03-13$16.41$34.1765,200
1998-03-12$16.47$34.3082,200
1998-03-11$16.38$34.1098,800
1998-03-10$16.44$34.2374,200
1998-03-09$16.09$33.5239,800
1998-03-06$16.13$33.58223,200
1998-03-05$15.88$33.0673,000
1998-03-04$15.94$33.1999,200
1998-03-03$15.97$33.26108,800
1998-03-02$16.00$33.3298,600
1998-02-27$15.94$33.1997,200
1998-02-26$16.03$33.3964,600
1998-02-25$16.09$33.52133,600
1998-02-24$16.00$33.3271,800
1998-02-23$16.00$33.3287,200
1998-02-20$16.00$33.32191,400
1998-02-19$16.06$33.45100,200
1998-02-18$16.25$33.84102,200
1998-02-17$16.31$33.97263,000
1998-02-13$16.25$33.84511,800
1998-02-12$16.19$33.71122,000
1998-02-11$16.13$33.58722,200
1998-02-10$16.06$33.45107,600
1998-02-09$15.94$33.19504,400
1998-02-06$16.06$33.45109,400
1998-02-05$16.06$33.4573,400
1998-02-04$16.16$33.65232,800
1998-02-03$16.28$33.91145,800
1998-02-02$16.13$33.5884,400
1998-01-30$16.03$33.39117,600
1998-01-29$16.19$33.71137,200
1998-01-28$16.25$33.8460,400
1998-01-27$16.41$34.17305,800
1998-01-26$15.81$32.9370,400
1998-01-23$16.06$33.4558,000
1998-01-22$16.19$33.7151,200
1998-01-21$16.44$33.71707,200
1998-01-20$16.41$33.65180,800
1998-01-16$16.41$33.65450,400
1998-01-15$16.16$33.14218,400
1998-01-14$16.22$33.2742,200
1998-01-13$16.22$33.2759,200
1998-01-12$16.31$33.46132,800
1998-01-09$15.97$32.75129,400
1998-01-08$16.25$33.33166,400
1998-01-07$16.19$33.2097,200
1998-01-06$16.16$33.14105,600
1998-01-05$16.34$33.5267,600
1998-01-02$16.56$33.9774,600