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 — 2011

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2011-12-30$22.06$95.29734,400
2011-12-29$22.16$95.75449,000
2011-12-28$21.99$95.011,068,200
2011-12-27$22.14$95.66720,400
2011-12-23$21.93$94.78620,200
2011-12-22$21.67$93.611,074,200
2011-12-21$21.72$93.83872,400
2011-12-20$21.46$92.701,010,000
2011-12-19$20.90$90.281,377,000
2011-12-16$20.98$90.652,598,000
2011-12-15$21.07$91.021,772,800
2011-12-14$20.74$89.591,230,200
2011-12-13$20.93$90.431,051,800
2011-12-12$20.85$90.091,430,800
2011-12-09$21.03$90.871,383,000
2011-12-08$20.81$89.911,399,600
2011-12-07$21.06$90.973,613,200
2011-12-06$21.16$91.431,333,600
2011-12-05$21.09$91.121,143,000
2011-12-02$20.80$89.871,015,800
2011-12-01$21.10$91.171,072,800
2011-11-30$21.11$91.191,878,000
2011-11-29$20.54$88.751,767,600
2011-11-28$20.36$87.951,195,000
2011-11-25$20.20$87.26393,600
2011-11-23$20.16$87.081,047,600
2011-11-22$20.46$88.381,444,200
2011-11-21$20.64$89.161,445,000
2011-11-18$20.83$90.001,045,400
2011-11-17$20.86$90.111,238,800
2011-11-16$20.90$90.281,005,000
2011-11-15$21.08$91.061,384,000
2011-11-14$20.74$89.591,331,400
2011-11-11$21.16$91.411,223,400
2011-11-10$20.70$89.442,150,000
2011-11-09$20.75$89.632,445,200
2011-11-08$20.95$90.502,109,400
2011-11-07$20.76$89.721,863,200
2011-11-04$20.46$88.401,216,200
2011-11-03$20.67$89.331,667,400
2011-11-02$20.23$87.411,443,200
2011-11-01$19.76$85.381,190,400
2011-10-31$20.39$88.101,140,800
2011-10-28$20.53$88.702,341,000
2011-10-27$20.54$88.753,097,600
2011-10-26$20.40$87.231,784,000
2011-10-25$20.21$86.411,791,400
2011-10-24$20.89$89.301,034,000
2011-10-21$20.71$88.531,124,000
2011-10-20$20.33$86.951,001,800
2011-10-19$20.30$86.781,023,400
2011-10-18$20.36$87.051,171,400
2011-10-17$20.09$85.921,427,600
2011-10-14$20.28$86.691,179,400
2011-10-13$19.95$85.301,509,000
2011-10-12$19.81$84.701,412,400
2011-10-11$19.66$84.041,369,800
2011-10-10$19.76$84.511,355,400
2011-10-07$19.47$83.251,546,200
2011-10-06$19.34$82.691,034,400
2011-10-05$19.01$81.281,018,600
2011-10-04$18.87$80.681,507,200
2011-10-03$18.99$81.172,325,600
2011-09-30$19.34$82.691,470,800
2011-09-29$19.43$83.101,276,800
2011-09-28$19.25$82.311,247,800
2011-09-27$19.53$83.511,395,600
2011-09-26$19.32$82.611,159,400
2011-09-23$19.27$82.391,395,000
2011-09-22$19.18$82.011,262,600
2011-09-21$19.57$83.681,128,400
2011-09-20$20.07$85.79985,800
2011-09-19$20.01$85.56840,600
2011-09-16$20.01$85.581,176,000
2011-09-15$19.86$84.89745,000
2011-09-14$19.67$84.10901,800
2011-09-13$19.54$83.551,306,000
2011-09-12$19.28$82.41998,000
2011-09-09$19.22$82.161,207,400
2011-09-08$19.78$84.55703,000
2011-09-07$19.83$84.81849,400
2011-09-06$19.58$83.701,233,800
2011-09-02$19.64$83.951,011,400
2011-09-01$20.04$85.661,034,000
2011-08-31$20.29$86.731,224,400
2011-08-30$20.20$86.35807,000
2011-08-29$20.17$86.24842,800
2011-08-26$19.74$84.381,176,800
2011-08-25$19.72$84.301,295,600
2011-08-24$20.00$85.542,330,600
2011-08-23$19.45$83.162,771,400
2011-08-22$18.78$80.281,888,200
2011-08-19$18.96$81.051,616,200
2011-08-18$19.05$81.451,757,600
2011-08-17$19.62$83.891,628,800
2011-08-16$19.39$82.911,491,600
2011-08-15$19.55$83.591,905,600
2011-08-12$18.71$80.001,479,600
2011-08-11$18.75$80.151,759,200
2011-08-10$17.98$76.864,735,600
2011-08-09$18.19$77.783,179,600
2011-08-08$17.15$73.333,844,600
2011-08-05$18.42$78.742,521,000
2011-08-04$18.56$79.362,101,000
2011-08-03$19.62$83.871,547,400
2011-08-02$19.61$83.831,708,000
2011-08-01$19.84$84.851,635,800
2011-07-29$19.71$84.251,191,200
2011-07-28$19.82$84.751,065,600
2011-07-27$19.91$85.111,315,600
2011-07-26$20.28$85.80688,200
2011-07-25$20.44$86.48898,600
2011-07-22$20.49$86.69589,400
2011-07-21$20.63$87.28653,800
2011-07-20$20.41$86.33533,400
2011-07-19$20.25$85.70531,400
2011-07-18$20.06$84.87793,600
2011-07-15$20.40$86.311,223,400
2011-07-14$20.29$85.851,206,400
2011-07-13$20.53$86.861,391,600
2011-07-12$20.61$87.201,356,200
2011-07-11$20.57$87.03815,400
2011-07-08$20.90$88.411,124,000
2011-07-07$20.92$88.491,012,400
2011-07-06$20.91$88.451,255,800
2011-07-05$20.65$87.351,165,600
2011-07-01$20.71$87.62965,000
2011-06-30$20.33$86.011,170,400
2011-06-29$20.18$85.38997,800
2011-06-28$20.11$85.08910,400
2011-06-27$20.03$84.75662,000
2011-06-24$19.91$84.24959,800
2011-06-23$19.89$84.13916,000
2011-06-22$20.06$84.87828,600
2011-06-21$20.19$85.421,920,400
2011-06-20$20.14$85.191,009,200
2011-06-17$19.87$84.05997,800
2011-06-16$19.74$83.50849,200
2011-06-15$19.69$83.31791,600
2011-06-14$19.97$84.471,212,200
2011-06-13$19.78$83.67648,200
2011-06-10$19.81$83.79949,400
2011-06-09$19.95$84.39803,000
2011-06-08$20.00$84.621,018,200
2011-06-07$19.95$84.39866,800
2011-06-06$19.95$84.391,017,600
2011-06-03$20.11$85.061,307,000
2011-06-02$20.41$86.352,355,800
2011-06-01$20.72$87.645,903,600
2011-05-31$20.57$87.011,649,400
2011-05-27$20.25$85.68676,600
2011-05-26$20.20$85.441,230,400
2011-05-25$20.14$85.211,264,600
2011-05-24$19.96$84.45788,200
2011-05-23$19.93$84.32813,800
2011-05-20$20.28$85.78971,600
2011-05-19$20.32$85.95849,000
2011-05-18$20.33$86.011,109,800
2011-05-17$20.25$85.681,080,000
2011-05-16$20.24$85.631,015,600
2011-05-13$20.37$86.181,616,800
2011-05-12$20.50$86.711,292,000
2011-05-11$20.39$86.271,430,200
2011-05-10$20.38$86.232,440,400
2011-05-09$20.18$85.401,473,600
2011-05-06$20.12$85.112,198,800
2011-05-05$19.79$83.713,057,200
2011-05-04$19.71$83.371,200,400
2011-05-03$19.72$83.432,408,800
2011-05-02$19.74$83.501,330,600
2011-04-29$19.77$83.65624,000
2011-04-28$19.80$83.771,122,800
2011-04-27$19.70$83.331,002,400
2011-04-26$19.64$82.201,075,800
2011-04-25$19.43$81.34640,800
2011-04-21$19.32$80.86859,200
2011-04-20$19.24$80.501,098,200
2011-04-19$19.06$79.75999,400
2011-04-18$19.10$79.941,335,400
2011-04-15$19.42$81.25858,000
2011-04-14$19.15$80.12526,400
2011-04-13$19.11$79.96833,600
2011-04-12$19.10$79.941,555,400
2011-04-11$19.40$81.171,692,600
2011-04-08$19.81$82.89905,000
2011-04-07$19.79$82.82802,000
2011-04-06$19.83$82.99555,400
2011-04-05$19.64$82.20575,800
2011-04-04$19.75$82.64839,800
2011-04-01$19.64$82.181,330,400
2011-03-31$19.47$81.462,280,600
2011-03-30$19.74$82.591,006,400
2011-03-29$19.48$81.51775,200
2011-03-28$19.38$81.11597,200
2011-03-25$19.44$81.36920,200
2011-03-24$19.37$81.071,405,400
2011-03-23$19.33$80.92666,000
2011-03-22$19.42$81.301,013,400
2011-03-21$19.45$81.38770,800
2011-03-18$19.22$80.441,237,200
2011-03-17$19.24$80.521,926,000
2011-03-16$19.08$79.832,238,800
2011-03-15$19.22$80.423,056,400
2011-03-14$19.61$82.051,462,800
2011-03-11$19.89$83.241,336,800
2011-03-10$19.93$83.411,206,600
2011-03-09$20.31$85.00798,200
2011-03-08$20.20$84.521,093,600
2011-03-07$19.85$83.081,896,800
2011-03-04$19.76$82.721,415,400
2011-03-03$19.95$83.491,086,000
2011-03-02$19.72$82.531,187,600
2011-03-01$19.59$81.991,368,400
2011-02-28$19.69$82.411,256,000
2011-02-25$19.31$80.791,159,400
2011-02-24$19.19$80.31894,000
2011-02-23$19.24$80.50922,800
2011-02-22$19.38$81.09573,200
2011-02-18$19.52$81.69512,400
2011-02-17$19.52$81.69462,800
2011-02-16$19.45$81.38851,600
2011-02-15$19.63$82.13925,400
2011-02-14$19.42$81.25759,800
2011-02-11$19.46$81.421,312,200
2011-02-10$19.37$81.071,553,600
2011-02-09$19.05$79.731,550,800
2011-02-08$18.95$79.31546,200
2011-02-07$18.92$79.18579,800
2011-02-04$18.78$78.60571,400
2011-02-03$18.78$78.58893,600
2011-02-02$18.60$77.84710,000
2011-02-01$18.75$78.47808,200
2011-01-31$18.58$77.761,263,800
2011-01-28$18.47$77.301,028,200
2011-01-27$18.61$77.891,186,200
2011-01-26$18.74$77.521,098,200
2011-01-25$18.82$77.851,269,000
2011-01-24$18.80$77.791,432,400
2011-01-21$18.71$77.42511,200
2011-01-20$18.76$77.62791,600
2011-01-19$18.72$77.46919,800
2011-01-18$18.85$78.002,016,600
2011-01-14$18.72$77.44547,800
2011-01-13$18.62$77.02564,600
2011-01-12$18.64$77.11705,000
2011-01-11$18.74$77.52863,600
2011-01-10$18.55$76.731,462,200
2011-01-07$18.67$77.271,151,800
2011-01-06$18.63$77.06970,600
2011-01-05$18.63$77.06846,800
2011-01-04$18.65$77.171,420,400
2011-01-03$18.58$76.861,129,200