ALLIANT ENERGY CORP (LNT) Spending and interest coverage
- R&D / revenue · 12 months: Value (m); Formula and calculation Research and development expense / revenue. Period ending 2026-03-31..
- Stock-based compensation / revenue · 12 months: Value (m); Formula and calculation Share-based compensation / revenue. Period ending 2026-03-31..
- Interest coverage · 12 months: Value 1.90×; Formula and calculation Operating income ÷ reported interest expense..
Spending and interest coverage
Overview →Financial period ending 2026-03-31; current quote (m). Amounts retain their stated periods and units.
| Metric | Value | Formula and calculation |
|---|---|---|
| R&D / revenue · 12 months | (m) | Research and development expense / revenue. Period ending 2026-03-31. Calculation unavailable: missing inputs remain (m). |
| Stock-based compensation / revenue · 12 months | (m) | Share-based compensation / revenue. Period ending 2026-03-31. Calculation unavailable: missing inputs remain (m). |
| Interest coverage · 12 months | 1.90× | Operating income ÷ reported interest expense. $1.02B ÷ $535.00M ≈ 1.90× |
Calculation inputs
| Input | Amount with unit | Raw financial data |
|---|---|---|
| Research and development spending | (m) | |
| Revenue | 4.42B USD | Revenue from Contract with Customer, Excluding Assessed Tax |
| Stock-based compensation | (m) | |
| Operating income | 1.02B USD | Operating Income (Loss) |
| Interest expense · reported / estimated | 535.00M USD | Interest Expense · Estimated expense assumptions |
Latest interest expense basis: Reported. Estimated values carry *; expand each history row’s basis for its dated balances and rate assumptions.
Calculated history
Changes compare with the next older row (previous quarter), unless explicitly labeled otherwise. Rolling 12-month growth compares two successive quarter-end rolling totals; it is not year-over-year growth.
| Period ending | Research and development spending (USD) | Revenue (USD) | Stock-based compensation (USD) | Operating income (USD) | Interest expense · reported / estimated (USD) | R&D / revenue | SBC / revenue | Interest coverage | Interest expense basis |
|---|---|---|---|---|---|---|---|---|---|
| 2026-03-31 | (m) | $4.42B | (m) | $1.02B | $535.00M | (m) | (m) | 1.90× | Reported |
| 2025-12-31 | (m) | $4.36B | (m) | $1.02B | $512.00M | (m) | (m) | 2.00× | Reported |
| 2025-09-30 | (m) | $4.27B | (m) | $1.05B | $492.00M | (m) | (m) | 2.13× | Reported |
| 2025-06-30 | (m) | $4.14B | (m) | $1.01B | $477.00M | (m) | (m) | 2.12× | Reported |
| 2025-03-31 | (m) | $4.08B | (m) | $921.00M | $461.00M | (m) | (m) | 2.00× | Reported |
| 2024-12-31 | (m) | $3.98B | (m) | $886.00M | $449.00M | (m) | (m) | 1.97× | Reported |
| 2024-09-30 | (m) | $3.97B | (m) | $848.00M | (m) | (m) | (m) | (m) | (m) |
| 2024-06-30 | (m) | $3.96B | (m) | $856.00M | $419.00M | (m) | (m) | 2.04× | Reported |
| 2024-03-31 | (m) | $3.98B | (m) | $943.00M | $407.00M | (m) | (m) | 2.32× | Reported |
| 2023-12-31 | (m) | $4.03B | (m) | $943.00M | $394.00M | (m) | (m) | 2.39× | Reported |
| 2023-09-30 | (m) | $4.12B | (m) | $919.00M | $379.00M | (m) | (m) | 2.42× | Reported |
| 2023-06-30 | (m) | $4.18B | (m) | $907.00M | $363.00M | (m) | (m) | 2.50× | Reported |
| 2023-03-31 | (m) | $4.21B | (m) | $902.00M | $345.00M | (m) | (m) | 2.61× | Reported |
| 2022-12-31 | (m) | $4.21B | (m) | $928.00M | $325.00M | (m) | (m) | 2.86× | Reported |
| 2022-09-30 | (m) | $4.07B | (m) | $901.00M | $306.00M | (m) | (m) | 2.94× | Reported |
| 2022-06-30 | (m) | $3.96B | (m) | $881.00M | $291.00M | (m) | (m) | 3.03× | Reported |
| 2022-03-31 | (m) | $3.84B | (m) | $845.00M | $282.00M | (m) | (m) | 3.00× | Reported |
| 2021-12-31 | (m) | $3.67B | (m) | $795.00M | $277.00M | (m) | (m) | 2.87× | Reported |
| 2021-09-30 | (m) | $3.56B | (m) | $775.00M | $274.00M | (m) | (m) | 2.83× | Reported |
| 2021-06-30 | (m) | $3.46B | (m) | $758.00M | $274.00M | (m) | (m) | 2.77× | Reported |
| 2021-03-31 | (m) | $3.40B | (m) | $750.00M | $275.00M | (m) | (m) | 2.73× | Reported |
| 2020-12-31 | (m) | $3.42B | (m) | $740.00M | $275.00M | (m) | (m) | 2.69× | Reported |
| 2020-09-30 | (m) | $3.48B | (m) | $788.70M | $275.90M | (m) | (m) | 2.86× | Reported |
| 2020-06-30 | (m) | $3.55B | (m) | $807.50M | $275.90M | (m) | (m) | 2.93× | Reported |
| 2020-03-31 | (m) | $3.58B | (m) | $789.20M | $275.50M | (m) | (m) | 2.86× | Reported |
| 2019-12-31 | (m) | $3.65B | (m) | $777.70M | $272.90M | (m) | (m) | 2.85× | Reported |
| 2019-09-30 | (m) | $3.64B | (m) | $738.20M | $267.00M | (m) | (m) | 2.76× | Reported |
| 2019-06-30 | (m) | $3.58B | (m) | $704.10M | $262.00M | (m) | (m) | 2.69× | Reported |
| 2019-03-31 | (m) | $3.61B | (m) | $705.50M | $254.10M | (m) | (m) | 2.78× | Reported |
| 2018-12-31 | (m) | $3.53B | (m) | $694.40M | $247.00M | (m) | (m) | 2.81× | Reported |
| 2018-09-30 | (m) | $3.52B | (m) | $689.20M | $240.40M | (m) | (m) | 2.87× | Reported |
| 2018-06-30 | (m) | $3.50B | (m) | $669.40M | $231.00M | (m) | (m) | 2.90× | Reported |
| 2018-03-31 | (m) | $3.44B | (m) | $671.90M | $222.50M | (m) | (m) | 3.02× | Reported |
| 2017-12-31 | (m) | $3.38B | (m) | $653.40M | $215.60M | (m) | (m) | 3.03× | Reported |
| 2017-09-30 | (m) | $3.32B | (m) | $623.60M | $210.40M | (m) | (m) | 2.96× | Reported |
| 2017-06-30 | (m) | $3.34B | (m) | $554.70M | $205.30M | (m) | (m) | 2.70× | Reported |
| 2017-03-31 | (m) | $3.33B | (m) | $534.00M | $200.50M | (m) | (m) | 2.66× | Reported |
| 2016-12-31 | (m) | $3.32B | (m) | $537.00M | $196.20M | (m) | (m) | 2.74× | Reported |
| 2016-09-30 | (m) | $3.26B | (m) | $516.30M | $192.40M | (m) | (m) | 2.68× | Reported |
| 2016-06-30 | (m) | $3.24B | (m) | $589.60M | $190.00M | (m) | (m) | 3.10× | Reported |
| 2016-03-31 | (m) | $3.20B | (m) | $570.00M | $188.50M | (m) | (m) | 3.02× | Reported |
| 2015-12-31 | (m) | $3.25B | (m) | $577.00M | $187.10M | (m) | (m) | 3.08× | Reported |
| 2015-09-30 | (m) | $3.32B | (m) | $589.10M | $185.20M | (m) | (m) | 3.18× | Reported |
| 2015-06-30 | (m) | $3.26B | (m) | $548.00M | $183.40M | (m) | (m) | 2.99× | Reported |
| 2015-03-31 | (m) | $3.29B | (m) | $542.30M | $182.00M | (m) | (m) | 2.98× | Reported |
| 2014-12-31 | (m) | $3.35B | (m) | $543.60M | $180.60M | (m) | (m) | 3.01× | Reported |
| 2014-09-30 | (m) | $3.38B | (m) | $560.90M | $180.10M | (m) | (m) | 3.11× | Reported |
| 2014-06-30 | (m) | $3.40B | (m) | $567.50M | $178.00M | (m) | (m) | 3.19× | Reported |
| 2014-03-31 | (m) | $3.37B | (m) | $567.40M | $175.40M | (m) | (m) | 3.23× | Reported |
| 2013-12-31 | (m) | $3.28B | (m) | $533.90M | $172.80M | (m) | (m) | 3.09× | Reported |
| 2013-09-30 | (m) | $3.20B | (m) | $526.90M | $168.50M | (m) | (m) | 3.13× | Reported |
| 2013-06-30 | (m) | $3.22B | (m) | $539.20M | $164.30M | (m) | (m) | 3.28× | Reported |
| 2013-03-31 | (m) | $3.19B | (m) | $544.80M | $160.40M | (m) | (m) | 3.40× | Reported |
| 2012-12-31 | (m) | $3.09B | (m) | $519.70M | $156.70M | (m) | (m) | 3.32× | Reported |
| 2012-09-30 | (m) | $3.55B | (m) | $489.20M | $154.40M | (m) | (m) | 3.17× | Reported |
| 2012-06-30 | (m) | $3.53B | (m) | $484.90M | $154.90M | (m) | (m) | 3.13× | Reported |
| 2012-03-31 | (m) | $3.55B | (m) | $446.70M | $156.70M | (m) | (m) | 2.85× | Reported |
| 2011-12-31 | (m) | $3.67B | (m) | $478.40M | $158.30M | (m) | (m) | 3.02× | Reported |
| 2011-09-30 | (m) | $3.62B | (m) | $484.70M | $160.50M | (m) | (m) | 3.02× | Reported |
| 2011-06-30 | (m) | $3.55B | (m) | $546.20M | $163.70M | (m) | (m) | 3.34× | Reported |
| 2011-03-31 | (m) | $3.47B | (m) | $574.90M | $162.90M | (m) | (m) | 3.53× | Reported |
| 2010-12-31 | (m) | $3.42B | (m) | $556.10M | $163.00M | (m) | (m) | 3.41× | Reported |
| 2010-09-30 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
| 2010-06-30 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
| 2010-03-31 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
| 2009-12-31 | (m) | $3.43B | (m) | $396.20M | $154.90M | (m) | (m) | 2.56× | Reported |
| 2009-09-30 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
| 2009-06-30 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
| 2008-12-31 | (m) | $3.67B | (m) | $487.00M | $125.80M | (m) | (m) | 3.87× | Reported |
(m) means missing inputs. Historical market-based ratios use the saved close on or immediately before period ending and that period’s reported shares; current quotes are not substituted. Five-year projections repeat historical CAGR, not analyst forecasts.
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