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 — 2006

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2006-12-29$18.89$65.48707,200
2006-12-28$19.08$66.15424,800
2006-12-27$19.21$66.59426,000
2006-12-26$19.19$66.53533,800
2006-12-22$19.01$65.91512,200
2006-12-21$19.11$66.24886,400
2006-12-20$19.28$66.831,020,400
2006-12-19$19.31$66.931,085,400
2006-12-18$19.31$66.95982,600
2006-12-15$19.40$67.261,846,000
2006-12-14$19.48$67.541,287,800
2006-12-13$19.51$67.64838,400
2006-12-12$19.41$67.281,180,000
2006-12-11$19.42$67.35656,800
2006-12-08$19.38$67.19645,400
2006-12-07$19.42$67.33692,000
2006-12-06$19.58$67.90638,600
2006-12-05$19.73$68.41865,200
2006-12-04$19.70$68.30865,200
2006-12-01$19.42$67.311,183,000
2006-11-30$19.45$67.43917,600
2006-11-29$19.58$67.89856,800
2006-11-28$19.38$67.191,111,800
2006-11-27$19.32$66.98994,400
2006-11-24$19.79$68.60160,600
2006-11-22$19.76$68.51769,000
2006-11-21$19.84$68.79505,600
2006-11-20$19.71$68.34999,600
2006-11-17$19.74$68.42725,800
2006-11-16$19.62$68.011,179,000
2006-11-15$19.60$67.951,418,600
2006-11-14$19.85$68.821,475,800
2006-11-13$19.69$68.27827,400
2006-11-10$19.82$68.70757,200
2006-11-09$19.58$67.89712,000
2006-11-08$19.73$68.39977,000
2006-11-07$19.50$67.59713,000
2006-11-06$19.33$67.021,144,200
2006-11-03$19.42$67.351,634,400
2006-11-02$19.13$66.311,152,000
2006-11-01$19.14$66.361,540,800
2006-10-31$19.17$66.483,449,000
2006-10-30$19.70$68.30701,200
2006-10-27$19.41$67.30497,200
2006-10-26$19.54$67.23724,200
2006-10-25$19.64$67.57646,600
2006-10-24$19.43$66.87695,600
2006-10-23$19.40$66.77578,800
2006-10-20$19.17$65.97496,800
2006-10-19$19.04$65.53298,800
2006-10-18$18.99$65.35572,600
2006-10-17$18.92$65.13536,400
2006-10-16$18.84$64.86458,600
2006-10-13$18.76$64.56602,600
2006-10-12$18.83$64.821,315,800
2006-10-11$18.68$64.29982,400
2006-10-10$18.32$63.05749,400
2006-10-09$18.03$62.05605,400
2006-10-06$17.99$61.91860,800
2006-10-05$18.15$62.45892,000
2006-10-04$18.29$62.951,063,800
2006-10-03$18.14$62.431,236,400
2006-10-02$18.20$62.641,448,400
2006-09-29$17.87$61.481,130,400
2006-09-28$17.99$61.901,181,400
2006-09-27$17.99$61.91831,000
2006-09-26$18.01$62.00906,600
2006-09-25$18.02$62.02896,000
2006-09-22$17.64$60.71833,000
2006-09-21$17.65$60.74857,000
2006-09-20$17.81$61.291,088,200
2006-09-19$17.79$61.211,150,600
2006-09-18$17.97$61.84731,400
2006-09-15$18.24$62.77904,800
2006-09-14$18.33$63.101,231,400
2006-09-13$18.14$62.41476,400
2006-09-12$18.13$62.381,154,600
2006-09-11$18.21$62.65830,800
2006-09-08$18.08$62.24941,200
2006-09-07$18.24$62.77939,200
2006-09-06$18.16$62.50945,600
2006-09-05$18.54$63.811,741,600
2006-09-01$18.18$62.57788,800
2006-08-31$18.30$62.96810,800
2006-08-30$18.06$62.151,093,000
2006-08-29$18.09$62.262,044,000
2006-08-28$18.25$62.821,100,400
2006-08-25$18.25$62.81674,600
2006-08-24$18.15$62.451,152,800
2006-08-23$17.85$61.431,187,400
2006-08-22$17.89$61.552,587,400
2006-08-21$17.49$60.171,091,200
2006-08-18$17.52$60.301,546,800
2006-08-17$17.60$60.571,033,200
2006-08-16$17.83$61.341,059,600
2006-08-15$17.85$61.431,340,800
2006-08-14$17.68$60.861,616,800
2006-08-11$17.50$60.231,577,800
2006-08-10$17.75$61.071,685,000
2006-08-09$17.99$61.91763,000
2006-08-08$18.15$62.461,073,200
2006-08-07$18.00$61.951,415,600
2006-08-04$18.01$62.002,256,400
2006-08-03$18.36$63.191,638,200
2006-08-02$18.00$61.95829,400
2006-08-01$18.00$61.951,029,400
2006-07-31$18.09$62.261,047,000
2006-07-28$18.05$62.10796,400
2006-07-27$17.89$61.57655,800
2006-07-26$18.09$61.781,415,800
2006-07-25$17.88$61.031,669,200
2006-07-24$17.68$60.381,252,200
2006-07-21$17.56$59.95933,200
2006-07-20$17.53$59.85756,400
2006-07-19$17.42$59.471,199,400
2006-07-18$17.05$58.211,343,800
2006-07-17$17.11$58.42870,000
2006-07-14$17.17$58.64877,000
2006-07-13$17.25$58.881,177,200
2006-07-12$17.27$58.96900,600
2006-07-11$17.47$59.641,337,200
2006-07-10$17.48$59.66708,000
2006-07-07$17.44$59.54826,600
2006-07-06$17.21$58.76673,600
2006-07-05$17.38$59.321,213,600
2006-07-03$17.43$59.53516,000
2006-06-30$17.15$58.55727,400
2006-06-29$17.15$58.551,238,800
2006-06-28$16.80$57.341,111,600
2006-06-27$16.64$56.811,092,800
2006-06-26$16.85$57.531,207,600
2006-06-23$16.76$57.22705,400
2006-06-22$16.72$57.081,077,000
2006-06-21$16.88$57.631,466,000
2006-06-20$16.66$56.86933,600
2006-06-19$16.71$57.05709,600
2006-06-16$16.97$57.92811,400
2006-06-15$16.98$57.95968,400
2006-06-14$16.66$56.88903,800
2006-06-13$16.89$57.661,014,600
2006-06-12$17.12$58.43819,600
2006-06-09$17.27$58.96691,800
2006-06-08$17.23$58.83931,600
2006-06-07$17.17$58.64689,400
2006-06-06$17.26$58.931,108,400
2006-06-05$17.27$58.96787,000
2006-06-02$17.58$60.001,057,200
2006-06-01$17.38$59.321,176,800
2006-05-31$17.20$58.724,943,600
2006-05-30$17.07$58.261,569,200
2006-05-26$16.95$57.87909,800
2006-05-25$17.03$58.141,177,600
2006-05-24$16.82$57.432,054,600
2006-05-23$16.31$55.681,247,200
2006-05-22$16.68$56.961,765,400
2006-05-19$16.50$56.321,983,200
2006-05-18$16.54$56.451,273,400
2006-05-17$16.81$57.371,737,600
2006-05-16$16.87$57.581,122,400
2006-05-15$16.91$57.721,227,800
2006-05-12$16.71$57.031,549,000
2006-05-11$16.78$57.271,807,400
2006-05-10$16.61$56.71882,000
2006-05-09$16.45$56.15745,800
2006-05-08$16.66$56.881,263,400
2006-05-05$16.40$55.99892,800
2006-05-04$16.23$55.41842,800
2006-05-03$16.22$55.38755,200
2006-05-02$16.38$55.91848,000
2006-05-01$16.14$55.101,314,800
2006-04-28$15.98$54.56813,400
2006-04-27$15.89$54.25598,200
2006-04-26$15.57$53.16582,600
2006-04-25$15.89$53.76763,600
2006-04-24$16.00$54.13708,600
2006-04-21$16.10$54.471,007,800
2006-04-20$15.80$53.45886,000
2006-04-19$15.75$53.271,162,600
2006-04-18$15.84$53.57983,000
2006-04-17$15.67$53.01392,200
2006-04-13$15.69$53.08330,200
2006-04-12$15.85$53.62286,000
2006-04-11$15.83$53.54551,200
2006-04-10$16.06$54.33347,800
2006-04-07$16.13$54.55517,200
2006-04-06$16.33$55.25736,400
2006-04-05$16.41$55.50484,200
2006-04-04$16.26$55.01771,200
2006-04-03$16.12$54.541,056,600
2006-03-31$15.74$53.23875,800
2006-03-30$15.97$54.01772,200
2006-03-29$16.01$54.161,352,600
2006-03-28$16.00$54.13736,600
2006-03-27$16.15$54.62993,600
2006-03-24$16.26$55.03537,800
2006-03-23$16.32$55.20738,400
2006-03-22$16.27$55.041,003,000
2006-03-21$16.25$54.96844,600
2006-03-20$16.47$55.70512,000
2006-03-17$16.67$56.411,125,800
2006-03-16$16.68$56.451,046,800
2006-03-15$16.74$56.621,510,800
2006-03-14$16.59$56.141,250,800
2006-03-13$16.41$55.50564,400
2006-03-10$16.32$55.20581,000
2006-03-09$16.28$55.08604,200
2006-03-08$16.15$54.62971,400
2006-03-07$16.22$54.86776,800
2006-03-06$16.29$55.10914,800
2006-03-03$16.54$55.94833,400
2006-03-02$16.55$55.97703,600
2006-03-01$16.53$55.91696,600
2006-02-28$16.55$55.991,369,600
2006-02-27$16.53$55.921,789,400
2006-02-24$16.40$55.473,778,200
2006-02-23$16.33$55.231,380,600
2006-02-22$16.18$54.761,708,800
2006-02-21$15.92$53.861,212,200
2006-02-17$15.94$53.911,232,400
2006-02-16$15.58$52.711,250,200
2006-02-15$15.52$52.491,239,800
2006-02-14$15.27$51.641,203,800
2006-02-13$15.36$51.95876,400
2006-02-10$15.20$51.421,213,200
2006-02-09$15.44$52.221,150,800
2006-02-08$15.69$53.082,596,200
2006-02-07$15.11$51.101,095,200
2006-02-06$14.94$50.53876,200
2006-02-03$14.84$50.19551,600
2006-02-02$14.90$50.411,177,400
2006-02-01$14.88$50.32581,800
2006-01-31$14.83$50.17659,800
2006-01-30$14.64$49.53369,800
2006-01-27$14.61$49.43703,200
2006-01-26$14.72$49.311,203,200
2006-01-25$14.91$49.931,200,000
2006-01-24$14.86$49.771,686,000
2006-01-23$14.52$48.631,071,600
2006-01-20$14.50$48.581,176,800
2006-01-19$14.62$48.96607,400
2006-01-18$14.57$48.81482,200
2006-01-17$14.55$48.74389,000
2006-01-13$14.48$48.51270,600
2006-01-12$14.47$48.46722,400
2006-01-11$14.45$48.41499,400
2006-01-10$14.48$48.51594,200
2006-01-09$14.38$48.17295,800
2006-01-06$14.48$48.49513,000
2006-01-05$14.34$48.04559,200
2006-01-04$14.44$48.38939,600
2006-01-03$14.25$47.74771,800