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.
Mercury NZMGHTF +8.44%86 Shiller PE Ratio is 33.62 as of Aug. 31, 2026, which is 2% below its 10-year median of 34.47. GuruFocus rates MGHTF with a GF Score™ of 86/100 and a GF Value™ of $3.97. The stock has 8 warning signs investors should review. Among 205 Utilities - Independent Power Producers companies, Mercury NZ ranks worse than 80.98% on this metric.
As of today (2026-08-31), Mercury NZ's current share price is $4.37. Mercury NZ's E10 for the fiscal year that ended in Jun26 was $0.13. Mercury NZ's Shiller PE Ratio for today is 33.62.
The historical rank and industry rank for Mercury NZ's Shiller PE Ratio or its related term are showing as below:
MGHTF'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 29.26 Med: 34.47 Max: 39.44
Current: 34.16
During the past 13 years, Mercury NZ's highest Shiller PE Ratio was 39.44. The lowest was 29.26. And the median was 34.47.
E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.
Mercury NZ's adjusted earnings per share data of for the fiscal year that ended in Jun26 was $0.131. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $0.13 for the trailing ten years ended in Jun26.
Shiller PE for Stocks: The True Measure of Stock Valuation
Mercury NZ (OTCPK:MGHTF) Shiller PE Ratio Explanation
Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.
Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.
Be Aware
Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.
Mercury NZ Shiller PE Ratio Related Terms
Mercury NZ Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Mercury NZ's Shiller PE 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 - Renewable subindustry, Mercury NZ's Shiller PE Ratio, along with its competitors' market caps and Shiller PE 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.
Mercury NZ Shiller PE Ratio vs Utilities - Independent Power Producers Industry
For the Utilities - Independent Power Producers industry and Utilities sector, Mercury NZ's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Mercury NZ's Shiller PE Ratio falls into.
For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.
Mercury NZ's Shiller PE Ratio for today is calculated as
* 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.
Mercury NZ's E10 for the fiscal year that ended in Jun26 is calculated as:
For example, Mercury NZ's adjusted earnings per share data for the fiscal year that ended in Jun26 was:
Add all the adjusted EPS together and divide 10 will get our E10.
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.
Mercury NZ (MGHTF) has a Shiller PE Ratio of 33.62 as of Aug. 31, 2026. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Mercury NZ and its competitors. This is near median its historical median of 34.47. Over the past decade, Mercury NZ's Shiller PE Ratio has ranged from 29.26 to 39.44. According to the industry distribution chart, Mercury NZ ranks #166 out of 205 companies in the Utilities - Independent Power Producers industry, placing it in the top 81%.
Is Mercury NZ's Shiller PE Ratio too high?
Mercury NZ's current Shiller PE Ratio of 33.62 is near median its 10-year median of 34.47. Over the past 10 years, this metric has ranged from a low of 29.26 to a high of 39.44. The Utilities - Independent Power Producers industry median Shiller PE Ratio is 15.20. Mercury NZ's value of 33.62 is 121.2% above this industry median. Based on the distribution chart, Mercury NZ ranks #166 out of 205 companies in the Utilities - Independent Power Producers industry, which is in the bottom quartile relative to peers. Overall, Mercury NZ has a GF Score™ of 86/100, reflecting its overall financial health beyond just this single metric.
How does Mercury NZ's Shiller PE Ratio compare to competitors?
According to the Utilities - Independent Power Producers industry distribution chart, Mercury NZ ranks #166 out of 205 companies for Shiller PE Ratio. This places Mercury NZ in the lower half of its industry. The industry median Shiller PE Ratio is 15.20. Mercury NZ's value of 33.62 is 121.2% above this benchmark. Historically, Mercury NZ's own Shiller PE Ratio has ranged from 29.26 to 39.44 over the past decade. While the company's 10-year median is 34.47 vs. the industry median of 15.20, Mercury NZ 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 Shiller PE Ratio for an Utilities - Independent Power Producers company?
The median Shiller PE Ratio among Utilities - Independent Power Producers companies is 15.20, based on 205 companies in the industry. Companies in the top quartile (top 25%) have a Shiller PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Shiller PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Mercury NZ's current Shiller PE Ratio of 33.62 is 121.2% 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 Shiller PE Ratio mean?
A high Shiller PE Ratio can signal that a stock is expensive relative to its fundamentals. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Mercury NZ and its competitors. For the Utilities - Independent Power Producers industry, the median Shiller PE Ratio is 15.20 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Mercury NZ's current Shiller PE Ratio is 33.62, which is near median its own 10-year median of 34.47. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Mercury NZ stock overvalued right now?
Mercury NZ (MGHTF) has a current Shiller PE Ratio of 33.62. The stock's GF Value™ is $3.97, compared to a current price of $4.37 — trading 10.1% above its estimated fair value. The current Shiller PE Ratio is 33.62, which is near median its 10-year median of 34.47 and 121.2% above the Utilities - Independent Power Producers industry median of 15.20. Mercury NZ's overall GF Score™ is 86/100 with 8 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shiller PE Ratio calculated?
Shiller PE Ratio is calculated from a company's financial statements. For Mercury NZ (MGHTF), the current Shiller PE Ratio is 33.62 as of Aug. 31, 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 Mercury NZ (MGHTF) Overvalued in 2026?
Based on GuruFocus' analysis, Mercury NZ stock appears to be overvalued.
The current stock price of $4.37 is trading 10.1% above its estimated GF Value™ of $3.97.
Key valuation signals for MGHTF:
Shiller PE Ratio: 33.62 (near median its 10-year median of 34.47)
GF Value™: $3.97 vs. price of $4.37 (10.1% above fair value)
Industry Position: 121.2% above the Utilities - Independent Power Producers median (#166 of 205)
No single metric tells the full story. See the MGHTF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Mercury NZ (formerly Mighty River Power) generates more than 15% of New Zealand's electricity and is one of the four major electricity generators and suppliers in the country. All electricity is generated from renewable sources, which makes it one of the lowest-cost providers of electricity. The company operates nine hydro stations and five geothermal power plants in the North Island and some wind farms. Mercury sells electricity to residential and commercial customers and has the largest share of the key Auckland market.
86GF Score
Get the complete analysis for MGHTF
Shiller PE 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
MGHTF has been successfully added to your 
