LNT Operating Margin - ALLIANT ENERGY CORP

Complete source-backed operating margin history.

Available history: 2008-12-31 to 2026-03-31
Data captured: 2026-09-04

Historical Operating Margin

Date	Operating Margin
2026-03-31	21.03%
2025-12-31	18.52%
2025-09-30	28.84%
2025-06-30	23.20%
2025-03-31	22.78%
2024-12-31	22.64%
2024-09-30	28.95%
2024-06-30	14.54%
2024-03-31	21.53%
2023-12-31	19.04%
2023-09-30	29.90%
2023-06-30	23.79%
2023-03-31	20.61%
2022-12-31	15.03%
2022-09-30	27.22%
2022-06-30	22.48%
2022-03-31	23.22%
2021-12-31	14.24%
2021-09-30	28.22%
2021-06-30	21.54%
2021-03-31	21.98%
2020-12-31	13.71%
2020-09-30	29.57%
2020-06-30	22.02%
2020-03-31	20.52%
2019-12-31	18.30%
2019-09-30	29.29%
2019-06-30	18.96%
2019-03-31	17.91%
2018-12-31	13.86%
2018-09-30	27.58%
2018-06-30	18.53%
2018-03-31	18.08%
2017-12-31	15.65%
2017-09-30	26.06%
2017-06-30	20.08%
2017-03-31	17.24%
2016-12-31	14.68%
2016-09-30	17.59%
2016-06-30	17.04%
2016-03-31	17.29%
2015-12-31	10.70%
2015-09-30	26.24%
2015-06-30	15.20%
2015-03-31	17.04%
2014-12-31	11.35%
2014-09-30	23.11%
2014-06-30	13.77%
2014-03-31	16.18%
2013-12-31	13.04%
2013-09-30	23.24%
2013-06-30	14.37%
2013-03-31	14.04%
2012-12-31	13.53%
2012-09-30	24.08%
2012-06-30	15.76%
2012-03-31	12.49%
2011-12-31	13.93%
2011-09-30	24.04%
2011-06-30	9.91%
2011-03-31	14.51%
2010-12-31	15.28%
2010-09-30	25.91%
2010-06-30	13.58%
2010-03-31	12.24%
2009-12-31	11.80%
2009-09-30	18.03%
2009-06-30	8.42%

Annual Operating Margin

Date	Operating Margin
2025-12-31	23.50%
2024-12-31	22.26%
2023-12-31	23.42%
2022-12-31	22.07%
2021-12-31	21.67%
2020-12-31	21.66%
2019-12-31	21.33%
2018-12-31	19.64%
2017-12-31	19.85%
2016-12-31	16.69%
2015-12-31	17.73%
2014-12-31	16.23%
2013-12-31	16.29%
2012-12-31	16.79%
2011-12-31	15.93%
2010-12-31	17.17%
2009-12-31	11.56%
2008-12-31	13.27%