Alliant EnergyLNT -0.09%78 PB Ratio is 2.63 as of Jun. 25, 2026, which is 14% above its 10-year median of 2.31. GuruFocus rates LNT with a GF Score™ of 78/100 and a GF Value™ of $65.64 (Modestly Overvalued). The stock has 10 warning signs investors should review. Among 502 Utilities - Regulated companies, Alliant Energy ranks worse than 82.07% on this metric.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. As of today (2026-06-25), Alliant Energy's share price is $75.525. Alliant Energy's Book Value per Share for the quarter that ended in Mar. 2026 was $28.74. Hence, Alliant Energy's PB Ratio of today is 2.63.
Warning Sign:
Alliant Energy Corp stock PB Ratio (=2.63) is close to 10-year high of 2.81.
The historical rank and industry rank for Alliant Energy's PB Ratio or its related term are showing as below:
LNT'
s PB Ratio Range Over the Past 10 Years
Min: 1.8 Med: 2.31 Max: 2.81
Current: 2.63
During the past 13 years, Alliant Energy's highest PB Ratio was 2.81. The lowest was 1.80. And the median was 2.31.
LNT's PB Ratio is ranked worse than 82.07% of 502
companies
in the Utilities - Regulated industry
Industry Median: 1.43
vs LNT: 2.63
During the past 12 months, Alliant Energy's average Book Value Per Share Growth Rate was 4.10% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was 4.50% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was 4.60% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was 6.00% per year.
During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of Alliant Energy was 39.50% per year. The lowest was -21.20% per year. And the median was 4.50% per year.
The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.
Be Aware
Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.
Alliant Energy PB Ratio Related Terms
Alliant Energy PB Ratio Historical Data
* Premium members only.
The historical data trend for Alliant Energy's PB Ratio can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Utilities - Regulated Electric subindustry, Alliant Energy's PB Ratio, along with its competitors' market caps and PB Ratio data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Alliant Energy PB Ratio vs Utilities - Regulated Industry
For the Utilities - Regulated industry and Utilities sector, Alliant Energy's PB Ratio distribution charts can be found below:
* The bar in red indicates where Alliant Energy's PB Ratio falls into.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.
Alliant Energy's PB Ratio for today is calculated as follows:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
It can also be calculated from the numbers for the whole company:
A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.
Alliant Energy (LNT) has a PB Ratio of 2.63 as of Jun. 25, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Alliant Energy and its competitors. This is 14% above median its historical median of 2.31. Over the past decade, Alliant Energy's PB Ratio has ranged from 1.80 to 2.81. According to the industry distribution chart, Alliant Energy ranks #412 out of 502 companies in the Utilities - Regulated industry, placing it in the top 82.1%.
Is Alliant Energy's PB Ratio too high?
Alliant Energy's current PB Ratio of 2.63 is 14% above median its 10-year median of 2.31. Over the past 10 years, this metric has ranged from a low of 1.80 to a high of 2.81. The Utilities - Regulated industry median PB Ratio is 1.43. Alliant Energy's value of 2.63 is 83.9% above this industry median. Based on the distribution chart, Alliant Energy ranks #412 out of 502 companies in the Utilities - Regulated industry, which is in the bottom quartile relative to peers. Overall, Alliant Energy has a GF Score™ of 78/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Alliant Energy's PB Ratio compare to EVRG and CMS?
According to the Utilities - Regulated industry distribution chart, Alliant Energy ranks #412 out of 502 companies for PB Ratio. This places Alliant Energy in the lower half of its industry. The industry median PB Ratio is 1.43. Alliant Energy's value of 2.63 is 83.9% above this benchmark. Historically, Alliant Energy's own PB Ratio has ranged from 1.80 to 2.81 over the past decade. While the company's 10-year median is 2.31 vs. the industry median of 1.43, Alliant Energy has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good PB Ratio for an Utilities - Regulated company?
The median PB Ratio among Utilities - Regulated companies is 1.43, based on 502 companies in the industry. Companies in the top quartile (top 25%) have a PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Alliant Energy's current PB Ratio of 2.63 is 83.9% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high PB Ratio mean?
A high PB Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Alliant Energy and its competitors. For the Utilities - Regulated industry, the median PB Ratio is 1.43 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Alliant Energy's current PB Ratio is 2.63, which is 14% above median its own 10-year median of 2.31. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Alliant Energy stock overvalued right now?
Based on GuruFocus' analysis, Alliant Energy (LNT) is currently considered Modestly Overvalued. The stock's GF Value™ is $65.64, compared to a current price of $75.53 — trading 15.1% above its estimated fair value. The current PB Ratio is 2.63, which is 14% above median its 10-year median of 2.31 and 83.9% above the Utilities - Regulated industry median of 1.43. Alliant Energy's overall GF Score™ is 78/100 with 10 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PB Ratio calculated?
PB Ratio is calculated from a company's financial statements. For Alliant Energy (LNT), the current PB Ratio is 2.63 as of Jun. 25, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Alliant Energy (LNT) Overvalued in 2026?
Based on GuruFocus' analysis, Alliant Energy stock appears to be overvalued.
The current stock price of $75.53 is trading 15.1% above its estimated GF Value™ of $65.64.
GuruFocus considers Alliant Energy to be Modestly Overvalued.
Key valuation signals for LNT:
PB Ratio: 2.63 (14% above median its 10-year median of 2.31)
GF Value™: $65.64 vs. price of $75.53 (15.1% above fair value)
Industry Position: 83.9% above the Utilities - Regulated median (#412 of 502)
No single metric tells the full story. See the LNT stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Alliant Energy is the parent of two regulated utilities, Interstate Power and Light and Wisconsin Power and Light. Together, IPL and WPL serve nearly 1 million electric customers and 425,000 natural gas-only customers. Both subsidiaries engage in the generation and distribution of electricity and the distribution and transportation of natural gas. Alliant also owns a 16% interest in American Transmission.
78GF Score
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