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 — 2015

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2015-12-31$31.23$156.461,001,600
2015-12-30$31.73$158.96636,600
2015-12-29$31.69$158.79939,800
2015-12-28$31.62$158.411,270,200
2015-12-24$31.34$157.06369,400
2015-12-23$31.44$157.531,081,800
2015-12-22$31.15$156.061,415,800
2015-12-21$30.97$155.151,409,400
2015-12-18$31.23$156.483,177,000
2015-12-17$31.86$159.614,542,000
2015-12-16$30.38$152.221,220,400
2015-12-15$29.66$148.591,285,000
2015-12-14$29.40$147.291,111,800
2015-12-11$29.30$146.791,173,200
2015-12-10$29.41$147.341,396,200
2015-12-09$30.14$151.021,460,200
2015-12-08$30.34$152.051,053,400
2015-12-07$30.17$151.151,115,800
2015-12-04$30.17$151.20815,000
2015-12-03$29.70$148.791,756,600
2015-12-02$30.31$151.871,660,400
2015-12-01$30.70$153.831,781,400
2015-11-30$30.09$150.791,889,800
2015-11-27$29.94$150.02404,600
2015-11-25$29.86$149.59558,000
2015-11-24$30.05$150.54807,200
2015-11-23$30.13$150.94754,200
2015-11-20$30.54$153.02883,400
2015-11-19$30.23$151.451,214,800
2015-11-18$29.65$148.56934,200
2015-11-17$29.49$147.76931,600
2015-11-16$29.99$150.271,266,800
2015-11-13$29.25$146.541,736,000
2015-11-12$29.22$146.391,357,400
2015-11-11$29.42$147.391,127,600
2015-11-10$29.08$145.681,527,400
2015-11-09$28.41$142.331,789,000
2015-11-06$28.50$142.782,494,400
2015-11-05$30.01$150.391,139,600
2015-11-04$30.06$150.59833,600
2015-11-03$29.86$149.62905,400
2015-11-02$29.77$149.171,112,000
2015-10-30$29.51$147.861,678,400
2015-10-29$29.33$146.991,411,800
2015-10-28$29.65$148.561,037,400
2015-10-27$30.19$149.89943,400
2015-10-26$30.30$150.41842,600
2015-10-23$30.18$149.841,009,600
2015-10-22$30.77$152.77835,800
2015-10-21$30.41$150.98735,600
2015-10-20$30.60$151.93911,400
2015-10-19$30.50$151.41818,800
2015-10-16$30.36$150.741,033,200
2015-10-15$30.26$150.261,082,600
2015-10-14$29.76$147.781,248,000
2015-10-13$29.70$147.461,501,600
2015-10-12$29.68$147.39818,600
2015-10-09$29.36$145.77829,800
2015-10-08$29.47$146.32743,400
2015-10-07$29.11$144.53949,600
2015-10-06$29.24$145.151,164,200
2015-10-05$29.48$146.371,363,000
2015-10-02$29.18$144.901,800,600
2015-10-01$28.80$142.971,453,600
2015-09-30$29.25$145.201,696,200
2015-09-29$28.87$143.341,315,800
2015-09-28$29.02$144.081,263,400
2015-09-25$28.99$143.93881,600
2015-09-24$28.68$142.401,085,800
2015-09-23$28.39$140.961,096,600
2015-09-22$28.35$140.76774,200
2015-09-21$28.58$141.87942,000
2015-09-18$28.38$140.881,775,600
2015-09-17$28.54$141.701,101,000
2015-09-16$28.11$139.541,002,800
2015-09-15$27.80$138.03712,000
2015-09-14$27.70$137.531,018,600
2015-09-11$27.63$137.16985,800
2015-09-10$27.42$136.14983,200
2015-09-09$27.50$136.561,209,800
2015-09-08$27.80$138.031,171,000
2015-09-04$27.28$135.421,190,600
2015-09-03$27.69$137.481,187,200
2015-09-02$27.57$136.861,632,400
2015-09-01$27.56$136.831,497,600
2015-08-31$28.33$140.681,442,800
2015-08-28$28.90$143.491,311,200
2015-08-27$28.87$143.311,901,200
2015-08-26$28.33$140.661,695,200
2015-08-25$28.05$139.272,494,200
2015-08-24$29.02$144.082,026,400
2015-08-21$30.37$150.761,571,200
2015-08-20$30.92$153.521,197,200
2015-08-19$31.25$155.131,517,000
2015-08-18$31.17$154.731,168,200
2015-08-17$31.46$156.201,944,200
2015-08-14$30.87$153.271,642,000
2015-08-13$30.76$152.721,617,600
2015-08-12$30.66$152.231,591,400
2015-08-11$30.33$150.561,301,600
2015-08-10$30.32$150.511,271,600
2015-08-07$30.36$150.742,373,600
2015-08-06$30.32$150.513,700,800
2015-08-05$30.54$151.631,107,400
2015-08-04$30.40$150.94805,000
2015-08-03$30.80$152.90768,000
2015-07-31$30.75$152.70864,400
2015-07-30$30.49$151.36970,000
2015-07-29$30.21$149.991,220,600
2015-07-28$30.27$148.921,238,000
2015-07-27$30.13$148.211,185,800
2015-07-24$29.63$145.78938,200
2015-07-23$29.58$145.551,147,800
2015-07-22$30.04$147.77833,000
2015-07-21$29.82$146.69734,000
2015-07-20$30.13$148.21561,600
2015-07-17$30.24$148.751,361,800
2015-07-16$30.67$150.891,235,000
2015-07-15$30.20$148.581,699,400
2015-07-14$30.15$148.33963,800
2015-07-13$30.14$148.261,121,400
2015-07-10$30.05$147.821,074,000
2015-07-09$29.80$146.59802,800
2015-07-08$30.21$148.60949,600
2015-07-07$30.39$149.511,388,200
2015-07-06$29.55$145.381,133,200
2015-07-02$29.50$145.161,427,400
2015-07-01$29.07$143.001,241,400
2015-06-30$28.86$141.991,752,200
2015-06-29$28.77$141.541,208,600
2015-06-26$28.92$142.281,019,600
2015-06-25$28.68$141.131,059,200
2015-06-24$28.84$141.89959,400
2015-06-23$29.06$142.971,135,000
2015-06-22$29.53$145.26691,200
2015-06-19$29.57$145.482,195,600
2015-06-18$29.72$146.191,401,400
2015-06-17$29.30$144.131,106,600
2015-06-16$29.14$143.361,204,600
2015-06-15$28.93$142.36917,200
2015-06-12$29.06$142.97666,200
2015-06-11$29.40$144.621,525,800
2015-06-10$29.02$142.77987,200
2015-06-09$28.91$142.211,284,600
2015-06-08$29.02$142.77935,000
2015-06-05$29.15$143.391,827,000
2015-06-04$29.53$145.281,422,400
2015-06-03$29.81$146.641,444,600
2015-06-02$30.26$148.882,646,600
2015-06-01$30.70$151.021,267,800
2015-05-29$30.65$150.791,151,400
2015-05-28$30.73$151.19693,600
2015-05-27$30.63$150.701,307,000
2015-05-26$30.34$149.271,002,400
2015-05-22$30.61$150.57648,800
2015-05-21$30.67$150.87575,800
2015-05-20$30.70$151.04616,600
2015-05-19$30.63$150.70852,600
2015-05-18$30.62$150.621,119,200
2015-05-15$30.50$150.061,158,400
2015-05-14$30.14$148.26930,000
2015-05-13$29.74$146.291,000,400
2015-05-12$29.95$147.351,080,200
2015-05-11$30.05$147.821,255,400
2015-05-08$30.13$148.242,431,800
2015-05-07$30.15$148.311,144,800
2015-05-06$30.09$148.06838,200
2015-05-05$30.22$148.681,299,400
2015-05-04$30.93$152.202,048,800
2015-05-01$30.50$150.081,453,400
2015-04-30$30.24$148.752,226,800
2015-04-29$30.88$151.93856,200
2015-04-28$31.11$153.061,207,400
2015-04-27$31.16$151.931,346,400
2015-04-24$31.67$154.41836,600
2015-04-23$31.44$153.321,570,800
2015-04-22$31.38$153.00888,800
2015-04-21$31.30$152.63922,800
2015-04-20$31.54$153.801,173,800
2015-04-17$31.08$151.541,134,800
2015-04-16$31.18$152.071,290,800
2015-04-15$31.41$153.141,223,600
2015-04-14$31.50$153.63912,800
2015-04-13$31.37$152.971,213,200
2015-04-10$31.57$153.95968,200
2015-04-09$31.25$152.411,635,200
2015-04-08$31.26$152.441,450,800
2015-04-07$31.30$152.631,381,000
2015-04-06$31.83$155.191,321,000
2015-04-02$31.46$153.391,147,600
2015-04-01$31.42$153.241,742,800
2015-03-31$31.50$153.612,547,800
2015-03-30$31.29$152.581,325,600
2015-03-27$30.82$150.291,823,600
2015-03-26$30.65$149.461,781,000
2015-03-25$31.01$151.221,425,200
2015-03-24$31.27$152.491,137,200
2015-03-23$31.72$154.661,009,600
2015-03-20$31.79$155.022,717,600
2015-03-19$31.36$152.931,417,000
2015-03-18$31.51$153.661,551,600
2015-03-17$30.84$150.411,359,400
2015-03-16$30.90$150.661,329,200
2015-03-13$30.26$147.561,461,000
2015-03-12$30.58$149.101,408,800
2015-03-11$30.16$147.051,670,800
2015-03-10$30.33$147.931,954,800
2015-03-09$30.35$148.002,191,000
2015-03-06$30.13$146.902,107,000
2015-03-05$31.10$151.661,315,000
2015-03-04$31.05$151.39794,400
2015-03-03$31.32$152.73882,800
2015-03-02$31.21$152.171,348,600
2015-02-27$31.80$155.07804,200
2015-02-26$31.86$155.341,015,000
2015-02-25$32.19$156.951,115,000
2015-02-24$32.76$159.731,767,600
2015-02-23$32.54$158.701,148,200
2015-02-20$32.31$157.531,222,600
2015-02-19$32.28$157.391,113,400
2015-02-18$32.52$158.581,617,800
2015-02-17$31.71$154.631,883,000
2015-02-13$31.79$155.001,999,600
2015-02-12$32.23$157.171,033,400
2015-02-11$32.33$157.661,184,400
2015-02-10$33.04$161.121,594,200
2015-02-09$32.32$157.611,593,400
2015-02-06$32.89$160.391,173,000
2015-02-05$34.40$167.77601,800
2015-02-04$34.06$166.071,332,400
2015-02-03$34.56$168.51955,000
2015-02-02$34.47$168.071,223,600
2015-01-30$34.31$167.29916,000
2015-01-29$35.16$171.46886,000
2015-01-28$34.60$168.721,057,600
2015-01-27$35.01$169.381,162,400
2015-01-26$35.08$169.75970,200
2015-01-23$35.10$169.82772,800
2015-01-22$35.03$169.46881,400
2015-01-21$35.04$169.50784,800
2015-01-20$34.79$168.291,297,800
2015-01-16$34.80$168.372,000,800
2015-01-15$34.16$165.271,691,800
2015-01-14$34.08$164.881,254,600
2015-01-13$33.47$161.91908,000
2015-01-12$33.24$160.80907,000
2015-01-09$33.33$161.231,109,400
2015-01-08$33.81$163.552,024,000
2015-01-07$33.28$161.011,501,600
2015-01-06$32.74$158.402,481,200
2015-01-05$32.85$158.911,835,000
2015-01-02$33.25$160.871,010,800