Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
Pinnacle West CapitalMEX:PNW 77 Cyclically Adjusted PB Ratio is 1.75 as of Aug. 21, 2026, which is 3% above its 10-year median of 1.70. GuruFocus rates MEX:PNW with a GF Score™ of 77/100 and a GF Value™ of MXN1,637.06. The stock has 14 warning signs investors should review. Among 427 Utilities - Regulated companies, Pinnacle West Capital ranks worse than 54.1% on this metric.
The historical rank and industry rank for Pinnacle West Capital's Cyclically Adjusted PB Ratio or its related term are showing as below:
MEX:PNW'
s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 1.15 Med: 1.7 Max: 2.4
Current: 1.63
During the past years, Pinnacle West Capital's highest Cyclically Adjusted PB Ratio was 2.40. The lowest was 1.15. And the median was 1.70.
MEX:PNW's Cyclically Adjusted PB Ratio is ranked worse than 54.1% of 427
companies
in the Utilities - Regulated industry
Industry Median: 1.53
vs MEX:PNW: 1.63
The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.
Pinnacle West Capital's adjusted book value per share data for the three months ended in Jun. 2026 was MXN1,012.851. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is MXN1,019.05 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Pinnacle West Capital (MEX:PNW) Cyclically Adjusted PB Ratio Explanation
Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.
Pinnacle West Capital Cyclically Adjusted PB Ratio Related Terms
Pinnacle West Capital Cyclically Adjusted PB Ratio Historical Data
* Premium members only.
The historical data trend for Pinnacle West Capital's Cyclically Adjusted 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.
Pinnacle West Capital Cyclically Adjusted PB Ratio Chart
MEX:PNW vs OGE, IDA, TXNM: Cyclically Adjusted PB Ratio Comparison
For the Utilities - Regulated Electric subindustry, Pinnacle West Capital's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted 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.
Pinnacle West Capital Cyclically Adjusted PB Ratio vs Utilities - Regulated Industry
For the Utilities - Regulated industry and Utilities sector, Pinnacle West Capital's Cyclically Adjusted PB Ratio distribution charts can be found below:
* The bar in red indicates where Pinnacle West Capital's Cyclically Adjusted PB Ratio falls into.
Pinnacle West Capital Cyclically Adjusted PB Ratio Calculation
Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.
* 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.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
What does a Cyclically Adjusted PB Ratio of 1.75 mean?
Pinnacle West Capital (MEX:PNW) has a Cyclically Adjusted PB Ratio of 1.75 as of Aug. 21, 2026. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Pinnacle West Capital and its competitors. This is near median its historical median of 1.70. Over the past decade, Pinnacle West Capital's Cyclically Adjusted PB Ratio has ranged from 1.15 to 2.40. According to the industry distribution chart, Pinnacle West Capital ranks #231 out of 427 companies in the Utilities - Regulated industry, placing it in the top 54.1%.
Is Pinnacle West Capital's Cyclically Adjusted PB Ratio too high?
Pinnacle West Capital's current Cyclically Adjusted PB Ratio of 1.75 is near median its 10-year median of 1.70. Over the past 10 years, this metric has ranged from a low of 1.15 to a high of 2.40. The Utilities - Regulated industry median Cyclically Adjusted PB Ratio is 1.53. Pinnacle West Capital's value of 1.75 is 14.4% above this industry median. Based on the distribution chart, Pinnacle West Capital ranks #231 out of 427 companies in the Utilities - Regulated industry, which is below the industry midpoint. Overall, Pinnacle West Capital has a GF Score™ of 77/100, reflecting its overall financial health beyond just this single metric.
How does Pinnacle West Capital's Cyclically Adjusted PB Ratio compare to OGE and IDA?
According to the Utilities - Regulated industry distribution chart, Pinnacle West Capital ranks #231 out of 427 companies for Cyclically Adjusted PB Ratio. This places Pinnacle West Capital in the lower half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.53. Pinnacle West Capital's value of 1.75 is 14.4% above this benchmark. Historically, Pinnacle West Capital's own Cyclically Adjusted PB Ratio has ranged from 1.15 to 2.40 over the past decade. While the company's 10-year median is 1.70 vs. the industry median of 1.53, Pinnacle West Capital 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 Cyclically Adjusted PB Ratio for an Utilities - Regulated company?
The median Cyclically Adjusted PB Ratio among Utilities - Regulated companies is 1.53, based on 427 companies in the industry. Companies in the top quartile (top 25%) have a Cyclically Adjusted PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, Cyclically Adjusted PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Pinnacle West Capital's current Cyclically Adjusted PB Ratio of 1.75 is 14.4% 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 Cyclically Adjusted PB Ratio mean?
A high Cyclically Adjusted PB Ratio can signal that a stock is expensive relative to its fundamentals. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Pinnacle West Capital and its competitors. For the Utilities - Regulated industry, the median Cyclically Adjusted PB Ratio is 1.53 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Pinnacle West Capital's current Cyclically Adjusted PB Ratio is 1.75, which is near median its own 10-year median of 1.70. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Pinnacle West Capital stock overvalued right now?
Pinnacle West Capital (MEX:PNW) has a current Cyclically Adjusted PB Ratio of 1.75. The stock's GF Value™ is MXN1,637.06, compared to a current price of MXN1,787.81 — trading 9.2% above its estimated fair value. The current Cyclically Adjusted PB Ratio is 1.75, which is near median its 10-year median of 1.70 and 14.4% above the Utilities - Regulated industry median of 1.53. Pinnacle West Capital's overall GF Score™ is 77/100 with 14 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For Pinnacle West Capital (MEX:PNW), the current Cyclically Adjusted PB Ratio is 1.75 as of Aug. 21, 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 Pinnacle West Capital (MEX:PNW) Overvalued in 2026?
Based on GuruFocus' analysis, Pinnacle West Capital stock appears to be overvalued.
The current stock price of MXN1,787.81 is trading 9.2% above its estimated GF Value™ of MXN1,637.06.
Key valuation signals for MEX:PNW:
Cyclically Adjusted PB Ratio: 1.75 (near median its 10-year median of 1.70)
GF Value™: MXN1,637.06 vs. price of MXN1,787.81 (9.2% above fair value)
Industry Position: 14.4% above the Utilities - Regulated median (#231 of 427)
No single metric tells the full story. See the MEX:PNW stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Pinnacle West is a holding company whose principal subsidiary is Arizona Public Service, a vertically integrated electric utility serving approximately 1.4 million customers across a 35,000-square-mile territory in central Arizona, including the Phoenix area. APS owns or leases 6.5 gigawatts of power generation capacity, including a 29% ownership stake in one of the largest nuclear plants in the US, Palo Verde. Half of the electricity that APS supplies to customers comes from clean energy sources, including nuclear.
77GF Score
Get the complete analysis for MEX:PNW
Cyclically Adjusted PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
MEX:PNW has been successfully added to your 
