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 — 2001

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2001-12-31$15.18$40.70379,400
2001-12-28$15.33$41.10344,000
2001-12-27$15.30$41.00384,600
2001-12-26$15.21$40.78475,600
2001-12-24$15.00$40.21221,200
2001-12-21$15.08$40.41552,200
2001-12-20$14.91$39.97663,800
2001-12-19$15.14$40.59820,600
2001-12-18$14.59$39.10696,200
2001-12-17$14.40$38.60403,600
2001-12-14$14.44$38.71397,000
2001-12-13$14.30$38.34529,800
2001-12-12$14.27$38.26541,000
2001-12-11$14.33$38.421,002,600
2001-12-10$14.45$38.74702,600
2001-12-07$14.38$38.54482,200
2001-12-06$14.23$38.14407,800
2001-12-05$14.26$38.22531,600
2001-12-04$14.31$38.36537,600
2001-12-03$14.14$37.91579,400
2001-11-30$14.05$37.67641,400
2001-11-29$14.28$38.27701,400
2001-11-28$14.12$37.85712,200
2001-11-27$14.23$38.14882,200
2001-11-26$14.00$37.52618,200
2001-11-23$14.08$37.73371,600
2001-11-21$14.01$37.55794,400
2001-11-20$14.26$38.23438,000
2001-11-19$14.21$38.08649,200
2001-11-16$14.14$37.89931,000
2001-11-15$14.12$37.84931,400
2001-11-14$14.33$38.401,058,400
2001-11-13$14.35$38.471,332,200
2001-11-12$14.14$37.911,014,800
2001-11-09$14.23$38.147,133,400
2001-11-08$14.18$38.001,000,600
2001-11-07$14.44$38.71749,600
2001-11-06$14.75$39.54603,000
2001-11-05$14.72$39.45363,200
2001-11-02$14.58$39.09259,200
2001-11-01$14.87$39.86300,000
2001-10-31$14.70$39.41240,600
2001-10-30$14.78$39.628,234,000
2001-10-29$14.58$39.07501,000
2001-10-26$14.90$39.28335,000
2001-10-25$14.91$39.29558,000
2001-10-24$15.33$40.41169,800
2001-10-23$15.55$40.99226,000
2001-10-22$15.70$41.38183,600
2001-10-19$15.85$41.78147,400
2001-10-18$15.52$40.90206,000
2001-10-17$15.65$41.25184,600
2001-10-16$16.00$42.16139,400
2001-10-15$15.69$41.36216,000
2001-10-12$15.84$41.74194,400
2001-10-11$15.89$41.88199,600
2001-10-10$15.96$42.06202,400
2001-10-09$15.91$41.94258,600
2001-10-08$15.98$42.11165,000
2001-10-05$15.82$41.70355,000
2001-10-04$16.04$42.28182,400
2001-10-03$16.04$42.28279,000
2001-10-02$15.88$41.85330,400
2001-10-01$15.70$41.37246,200
2001-09-28$15.65$41.25343,000
2001-09-27$15.36$40.47335,400
2001-09-26$14.93$39.34557,600
2001-09-25$15.30$40.32298,800
2001-09-24$15.23$40.13356,400
2001-09-21$15.26$40.22398,200
2001-09-20$15.25$40.20275,000
2001-09-19$15.65$41.25272,600
2001-09-18$15.66$41.27360,200
2001-09-17$15.30$40.33355,600
2001-09-10$15.33$40.41189,800
2001-09-07$15.27$40.24199,400
2001-09-06$15.35$40.45133,400
2001-09-05$15.34$40.43158,200
2001-09-04$15.44$40.69380,200
2001-08-31$15.19$40.04270,600
2001-08-30$15.31$40.36291,200
2001-08-29$15.24$40.16205,200
2001-08-28$15.12$39.86210,800
2001-08-27$15.13$39.88279,600
2001-08-24$15.09$39.78274,800
2001-08-23$14.89$39.24194,000
2001-08-22$15.02$39.59328,200
2001-08-21$15.07$39.71329,800
2001-08-20$15.08$39.74524,600
2001-08-17$14.70$38.75251,200
2001-08-16$14.94$39.38241,800
2001-08-15$14.63$38.56235,600
2001-08-14$14.63$38.56149,600
2001-08-13$14.68$38.68236,400
2001-08-10$14.78$38.95274,600
2001-08-09$14.55$38.35236,800
2001-08-08$14.43$38.02331,400
2001-08-07$14.36$37.84241,000
2001-08-06$14.18$37.38175,600
2001-08-03$14.44$38.05275,200
2001-08-02$14.48$38.17290,800
2001-08-01$14.38$37.89247,400
2001-07-31$14.29$37.65215,400
2001-07-30$14.36$37.85242,400
2001-07-27$14.18$37.367,108,400
2001-07-26$14.50$37.56360,800
2001-07-25$14.27$36.97403,600
2001-07-24$14.07$36.45540,200
2001-07-23$14.03$36.33454,600
2001-07-20$14.23$36.85308,200
2001-07-19$14.42$37.35442,800
2001-07-18$14.51$37.57279,800
2001-07-17$14.56$37.72390,200
2001-07-16$14.63$37.90228,200
2001-07-13$14.65$37.95225,800
2001-07-12$14.76$38.22280,200
2001-07-11$14.80$38.34125,200
2001-07-10$14.89$38.56148,000
2001-07-09$14.90$38.60174,400
2001-07-06$14.91$38.61207,800
2001-07-05$14.81$38.36196,400
2001-07-03$14.72$38.1263,000
2001-07-02$14.69$38.04272,600
2001-06-29$14.58$37.76240,600
2001-06-28$14.55$37.68243,600
2001-06-27$14.54$37.67349,400
2001-06-26$14.46$37.45224,600
2001-06-25$14.33$37.12418,200
2001-06-22$14.22$36.82221,400
2001-06-21$14.14$36.63258,400
2001-06-20$14.56$37.70255,600
2001-06-19$14.56$37.70329,800
2001-06-18$14.64$37.91402,400
2001-06-15$14.88$38.55353,000
2001-06-14$14.86$38.49217,800
2001-06-13$15.06$39.01186,200
2001-06-12$15.13$39.18148,000
2001-06-11$15.05$38.97304,800
2001-06-08$14.97$38.77118,400
2001-06-07$14.94$38.70164,400
2001-06-06$15.12$39.15327,800
2001-06-05$15.17$39.30507,800
2001-06-04$15.23$39.44125,000
2001-06-01$15.21$39.40179,800
2001-05-31$15.38$39.83299,400
2001-05-30$15.08$39.05160,000
2001-05-29$15.08$39.06193,800
2001-05-25$15.19$39.35231,800
2001-05-24$15.45$40.02165,600
2001-05-23$15.39$39.87221,400
2001-05-22$15.44$39.98148,800
2001-05-21$15.50$40.15254,400
2001-05-18$15.52$40.20144,600
2001-05-17$15.45$40.01267,000
2001-05-16$15.50$40.15250,600
2001-05-15$15.38$39.83243,800
2001-05-14$15.42$39.95280,200
2001-05-11$15.40$39.88240,600
2001-05-10$15.36$39.79526,600
2001-05-09$15.35$39.76278,200
2001-05-08$15.29$39.60359,400
2001-05-07$15.49$40.13171,000
2001-05-04$15.55$40.28298,400
2001-05-03$15.34$39.72409,200
2001-05-02$15.37$39.80352,400
2001-05-01$15.73$40.74322,200
2001-04-30$15.60$40.41338,400
2001-04-27$15.53$40.22415,400
2001-04-26$15.53$40.22810,200
2001-04-25$15.70$40.025,217,400
2001-04-24$15.65$39.90424,000
2001-04-23$15.55$39.64726,600
2001-04-20$16.12$41.08268,200
2001-04-19$16.00$40.80231,800
2001-04-18$15.98$40.72406,400
2001-04-17$16.13$41.11165,400
2001-04-16$15.77$40.19313,000
2001-04-12$15.74$40.11147,800
2001-04-11$15.63$39.83202,400
2001-04-10$15.96$40.69545,000
2001-04-09$15.49$39.49326,000
2001-04-06$15.41$39.28233,800
2001-04-05$15.63$39.84261,200
2001-04-04$15.70$40.02240,400
2001-04-03$15.86$40.43256,000
2001-04-02$15.95$40.66217,400
2001-03-30$15.91$40.56338,400
2001-03-29$15.59$39.74230,000
2001-03-28$15.56$39.67159,400
2001-03-27$15.62$39.81257,800
2001-03-26$15.42$39.31274,800
2001-03-23$15.16$38.63384,200
2001-03-22$15.28$38.95347,800
2001-03-21$15.43$39.33161,400
2001-03-20$15.66$39.9294,000
2001-03-19$15.73$40.10215,600
2001-03-16$15.58$39.70672,600
2001-03-15$15.83$40.34128,800
2001-03-14$15.75$40.15255,400
2001-03-13$15.94$40.63217,000
2001-03-12$16.23$41.36171,400
2001-03-09$16.32$41.59150,200
2001-03-08$16.34$41.65168,400
2001-03-07$16.40$41.81145,400
2001-03-06$16.35$41.68152,200
2001-03-05$16.51$42.09175,400
2001-03-02$16.50$42.05325,200
2001-03-01$16.33$41.63274,000
2001-02-28$16.50$42.06258,600
2001-02-27$16.48$42.00157,200
2001-02-26$16.55$42.19274,200
2001-02-23$16.34$41.65454,200
2001-02-22$16.48$42.00239,000
2001-02-21$16.50$42.06310,000
2001-02-20$16.18$41.25150,400
2001-02-16$16.14$41.14346,600
2001-02-15$15.95$40.66270,000
2001-02-14$15.95$40.66159,000
2001-02-13$15.93$40.60289,800
2001-02-12$15.94$40.62320,400
2001-02-09$16.09$41.03328,200
2001-02-08$15.70$40.02257,800
2001-02-07$15.61$39.78295,000
2001-02-06$15.33$39.07359,400
2001-02-05$15.34$39.09479,400
2001-02-02$15.07$38.40247,400
2001-02-01$15.25$38.88175,000
2001-01-31$15.25$38.88260,800
2001-01-30$15.50$39.50243,200
2001-01-29$15.63$39.84679,800
2001-01-26$15.88$39.835,273,800
2001-01-25$15.94$39.99426,000
2001-01-24$15.88$39.83303,600
2001-01-23$15.69$39.36303,400
2001-01-22$15.31$38.42272,400
2001-01-19$15.34$38.50260,000
2001-01-18$15.25$38.26210,800
2001-01-17$15.09$37.87222,200
2001-01-16$14.94$37.48476,600
2001-01-12$14.94$37.48406,000
2001-01-11$15.06$37.79735,000
2001-01-10$15.31$38.42471,000
2001-01-09$14.94$37.48567,800
2001-01-08$14.63$36.70513,600
2001-01-05$14.50$36.38322,200
2001-01-04$14.72$36.93622,400
2001-01-03$15.34$38.50382,800
2001-01-02$15.50$38.89306,400