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Alliant Energy (LNT) stock has been relatively weak recently, with the share price closing at US$67.86 as of 19 August 2026 after declines over the past week, month and past 3 months.
See our latest analysis for Alliant Energy.
Over the past month the Alliant Energy share price has fallen 9.45%, adding to a 7 day decline of 3.88%. However, the year to date share price return of 3.46% and 1 year total shareholder return of 4.48% suggest longer term momentum has been more resilient.
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Alliant Energy has slipped recently even though the stock trades about 16% below the average analyst price target and close to an internal fair value estimate. Is the recent weakness a warning sign or an opportunity before valuation normalises?
The most followed narrative currently pegs Alliant Energy at a fair value of $79.13, which is above the recent close at $67.86. That gap rests on a detailed view of future demand and investment returns.
The accelerating construction and onboarding of large-scale data centers in Alliant's Midwest service areas highlight a strong, sustained uptick in electricity demand, directly linked to population and economic growth in the region, which is expected to drive significant increases in revenue and top-line growth over the next several years.
The company's adaptive resource planning and regulatory flexibility in Iowa and Wisconsin allows rapid deployment of new generation capacity, positioning Alliant to capture higher allowed returns and efficiently expand its regulated asset base, supporting long-term earnings growth and margin expansion.
Curious what sits behind that $79.13 figure? The narrative leans on steady revenue expansion, thicker margins and a valuation multiple that assumes those targets hold. The discount rate used is precise. The growth path is carefully mapped. The real question is whether you agree with how confident those projections are.
Result: Fair Value of $79.13 (UNDERVALUED)
Have a read of the narrative in full and understand what's behind the forecasts.
However, Alliant Energy's narrative still leans heavily on large data center projects and supportive regulators, so delays or policy shifts could quickly challenge those assumptions.
Find out about the key risks to this Alliant Energy narrative.
The most followed narrative presents Alliant Energy as undervalued based on future earnings and margins, but our DCF model suggests a different perspective. On that measure, the stock at $67.86 sits just above an estimated future cash flow value of $67.71, which indicates a fairly tight margin for error. Which interpretation do you think is closer to reality?
Look into how the SWS DCF model arrives at its fair value.
Simply Wall St performs a discounted cash flow (DCF) on every stock in the world every day (check out Alliant Energy for example). We show the entire calculation in full. You can track the result in your watchlist or portfolio and be alerted when this changes, or use our stock screener to discover 48 high quality undervalued stocks. If you save a screener we even alert you when new companies match - so you never miss a potential opportunity.
If this Alliant Energy story feels mixed to you, that is exactly the point. Review the numbers, weigh the trade offs and check the 1 key reward and 2 important warning signs
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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.
Companies discussed in this article include LNT.
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