Mercury NZMGHTF +8.44%78 ROE % is 0.81% as of Dec. 2025, which is 86% below its 10-year median of 5.63. GuruFocus rates MGHTF with a GF Score™ of 78/100 and a GF Value™ of $4.06 (Fairly Valued). The stock has 11 warning signs investors should review. Among 433 Utilities - Independent Power Producers companies, Mercury NZ ranks worse than 58.43% on this metric.
ROE % is calculated as Net Income divided by its average Total Stockholders Equity over a certain period of time. Mercury NZ's annualized net income for the quarter that ended in Dec. 2025 was $23 Mil. Mercury NZ's average Total Stockholders Equity over the quarter that ended in Dec. 2025 was $2,870 Mil. Therefore, Mercury NZ's annualized ROE % for the quarter that ended in Dec. 2025 was 0.81%.
The historical rank and industry rank for Mercury NZ's ROE % or its related term are showing as below:
MGHTF'
s ROE % Range Over the Past 10 Years
Min: 0.02 Med: 5.63 Max: 10.49
Current: 1.83
During the past 13 years, Mercury NZ's highest ROE % was 10.49%. The lowest was 0.02%. And the median was 5.63%.
ROE % measures the rate of return on the ownership interest (shareholder's equity) of the common stock owners. It measures a firm's efficiency at generating profits from every unit of shareholders' equity (also known as net assets or assets minus liabilities). ROE % shows how well a company uses investment funds to generate earnings growth. ROE %s between 15% and 20% are considered desirable.
The factors that affect a company's ROE % can be illustrated with the three-step DuPont Analysis:
Note:
The net income data used here is two times the semi-annual (Dec. 2025) net income data. The Revenue data used here is two times the semi-annual (Dec. 2025) revenue data. The same rule applies to Pre-Tax Income and Operating Income.
* In the five-step DuPont Analysis, Operating Income is only available for non-financial companies. Thus, for Insurance companies, we use EBIT as a substitution of Operating Income. For Banks, both Operating Income and EBIT is unavailable. Thus we combined Interest Burden and Operating Margin % into Pretax Margin %, and the DuPont Analysis is divided into four components instead.
* 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.
Be Aware
Net Income is used.
Because a company can increase its ROE % by having more financial leverage, it is important to watch the equity multiplier when investing in high ROE % companies. Like ROA %, ROE % is calculated with only 12 months data. Fluctuations in company's earnings or business cycles can affect the ratio drastically. It is important to look at the ratio from a long term perspective.
Asset light businesses require very few assets to generate very high earnings. Their ROE %s can be extremely high.
Mercury NZ ROE % Related Terms
Mercury NZ ROE % Historical Data
* Premium members only.
The historical data trend for Mercury NZ's ROE % 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 ROE %, along with its competitors' market caps and ROE % 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 ROE % vs Utilities - Independent Power Producers Industry
For the Utilities - Independent Power Producers industry and Utilities sector, Mercury NZ's ROE % distribution charts can be found below:
* The bar in red indicates where Mercury NZ's ROE % falls into.
* 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.
In the calculation of annual ROE %, the net income of the last fiscal year and the average total shareholder equity over the fiscal year are used. In calculating the quarterly data,
the net income data used here is two times the semi-annual (Dec. 2025) net income data.
ROE % is displayed in the 30-year financial page.
Mercury NZ (MGHTF) has a ROE % of 0.81% as of Dec. 2025. Return on equity is the ratio of current-period net income to average two-period total equity. View historical data on Mercury NZ and its competitors. This is 86% below median its historical median of 5.63. Over the past decade, Mercury NZ's ROE % has ranged from 0.02 to 10.49. According to the industry distribution chart, Mercury NZ ranks #253 out of 433 companies in the Utilities - Independent Power Producers industry, placing it in the top 58.4%.
Is Mercury NZ's ROE % too high?
Mercury NZ's current ROE % of 0.81% is 86% below median its 10-year median of 5.63. Over the past 10 years, this metric has ranged from a low of 0.02 to a high of 10.49. The Utilities - Independent Power Producers industry median ROE % is 3.80. Mercury NZ's value of 0.81% is 78.7% below this industry median. Based on the distribution chart, Mercury NZ ranks #253 out of 433 companies in the Utilities - Independent Power Producers industry, which is below the industry midpoint. Overall, Mercury NZ has a GF Score™ of 78/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Mercury NZ's ROE % compare to competitors?
According to the Utilities - Independent Power Producers industry distribution chart, Mercury NZ ranks #253 out of 433 companies for ROE %. This places Mercury NZ in the lower half of its industry. The industry median ROE % is 3.80. Mercury NZ's value of 0.81% is 78.7% below this benchmark. Historically, Mercury NZ's own ROE % has ranged from 0.02 to 10.49 over the past decade. While the company's 10-year median is 5.63 vs. the industry median of 3.80, Mercury NZ has consistently been below 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 ROE % for an Utilities - Independent Power Producers company?
The median ROE % among Utilities - Independent Power Producers companies is 3.80, based on 433 companies in the industry. Companies in the top quartile (top 25%) have a ROE % significantly above this median, while those in the bottom quartile fall well below. However, ROE % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Mercury NZ's current ROE % of 0.81% is 78.7% below 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 ROE % mean?
A high ROE % can signal that a stock is expensive relative to its fundamentals. Return on equity is the ratio of current-period net income to average two-period total equity. View historical data on Mercury NZ and its competitors. For the Utilities - Independent Power Producers industry, the median ROE % is 3.80 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Mercury NZ's current ROE % is 0.81%, which is 86% below median its own 10-year median of 5.63. 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?
Based on GuruFocus' analysis, Mercury NZ (MGHTF) is currently considered Fairly Valued. The stock's GF Value™ is $4.06, compared to a current price of $4.37 — trading 7.6% above its estimated fair value. The current ROE % is 0.81%, which is 86% below median its 10-year median of 5.63 and 78.7% below the Utilities - Independent Power Producers industry median of 3.80. Mercury NZ's overall GF Score™ is 78/100 with 11 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is ROE % calculated?
ROE % is calculated from a company's financial statements. For Mercury NZ (MGHTF), the current ROE % is 0.81% as of Dec. 2025. 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 7.6% above its estimated GF Value™ of $4.06.
GuruFocus considers Mercury NZ to be Fairly Valued.
Key valuation signals for MGHTF:
ROE %: 0.81% (86% below median its 10-year median of 5.63)
GF Value™: $4.06 vs. price of $4.37 (7.6% above fair value)
Industry Position: 78.7% below the Utilities - Independent Power Producers median (#253 of 433)
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.
78GF Score
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