Mercury NZMGHTF +8.44%78 Piotroski F-Score is 4 as of Jun. 25, 2026, which is 33% below its 10-year median of 6.00. 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 420 Utilities - Independent Power Producers companies, Mercury NZ ranks worse than 58.81% on this metric.
The zones of discrimination were as such:
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Mercury NZ has an F-score of 4 indicating the company's financial situation is typical for a stable company.
The historical rank and industry rank for Mercury NZ's Piotroski F-Score or its related term are showing as below:
MGHTF'
s Piotroski F-Score Range Over the Past 10 Years
Min: 4 Med: 6 Max: 7
Current: 4
During the past 13 years, the highest Piotroski F-Score of Mercury NZ was 7. The lowest was 4. And the median was 6.
The developer of the system is Joseph D. Piotroski is relatively unknown accounting professor who shuns publicity and rarely gives interviews.
He graduated from the University of Illinois with a B.S. in accounting in 1989, received an M.B.A. from Indiana University in 1994. Five years later, in 1999, after earning a Ph.D. in accounting from the University of Michigan, he became an associate professor of accounting at the University of Chicago.
He wanted to see if he can develop a system (using a simple nine-point scoring system) that can increase the returns of a strategy of investing in low price to book (referred to in the paper as high book to market) value companies.
What he found was something that exceeded his most optimistic expectations.
Buying only those companies that scored highest (8 or 9) on his nine-point scale, or F-Score as he called it, over the 20 year period from 1976 to 1996 led to an average out-performance over the market of 13.4%.
Even more impressive were the results of a strategy of investing in the highest F-Score companies (8 or 9) and shorting companies with the lowest F-Score (0 or 1).
Over the same period from 1976 to 1996 (20 years) this strategy led to an average yearly return of 23%, substantially outperforming the average S&P 500 index return of 15.83% over the same period.
Mercury NZ Piotroski F-Score Related Terms
Mercury NZ Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for Mercury NZ's Piotroski F-Score 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 Piotroski F-Score, along with its competitors' market caps and Piotroski F-Score 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 Piotroski F-Score vs Utilities - Independent Power Producers Industry
For the Utilities - Independent Power Producers industry and Utilities sector, Mercury NZ's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Mercury NZ's Piotroski F-Score 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.
*Note: If the latest quarterly/semi-annual/annual total assets data is 0, then we will use previous quarterly/semi-annual/annual data for all the items in the balance sheet.
Profitability
Question 1. Return on Assets (ROA)
Net income before extraordinary items for the year divided by Total Assets at the beginning of the year.
Score 1 if positive, 0 if negative.
Mercury NZ's current Net Income (TTM) was 1.
==> Positive ==> Score 1.
Question 2. Cash Flow Return on Assets (CFROA)
Net cash flow from operating activities (operating cash flow) divided by Total Assets at the beginning of the year.
Mercury NZ's return on assets of this year was 0.00010045. Mercury NZ's return on assets of last year was 0.03080767.
==> Last year is higher ==> Score 0.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
Mercury NZ's current ratio of this year was 1.07394463. Mercury NZ's current ratio of last year was 0.89009299.
==> This year's current ratio is higher. ==> Score 1.
Question 7. Change in Shares in Issue
Compare the number of shares in issue this year, to the number in issue last year.
Score 0 if there is larger number of shares in issue this year, 1 otherwise.
Mercury NZ's number of shares in issue this year was 1400.002. Mercury NZ's number of shares in issue last year was 1390.795.
==> There is larger number of shares in issue this year. ==> Score 0.
Efficiency
Question 8. Change in Gross Margin
Compare this year's gross margin (Gross Profit divided by sales) to last year's.
Score 1 if this year's gross margin is higher, 0 if it's lower.
Mercury NZ's gross margin of this year was 0.28044607. Mercury NZ's gross margin of last year was 0.32390698.
==> Last year's gross margin is higher ==> Score 0.
Question 9. Change in asset turnover
Compare this year's asset turnover (total sales for the year divided by total assets at the beginning of the year) to last year's asset turnover ratio.
Score 1 if this year's asset turnover ratio is higher, 0 if it's lower
Mercury NZ's asset turnover of this year was 0.35108636. Mercury NZ's asset turnover of last year was 0.36438103.
==> Last year's asset turnover is higher ==> Score 0.
Evaluation
Piotroski F-Score
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Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Mercury NZ has an F-score of 4 indicating the company's financial situation is typical for a stable company.
Mercury NZ (MGHTF) has a Piotroski F-Score of 4 as of Jun. 25, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Mercury NZ and its competitors. This is 33% below median its historical median of 6.00. Over the past decade, Mercury NZ's Piotroski F-Score has ranged from 4.00 to 7.00. According to the industry distribution chart, Mercury NZ ranks #247 out of 420 companies in the Utilities - Independent Power Producers industry, placing it in the top 58.8%.
Is Mercury NZ's Piotroski F-Score too high?
Mercury NZ's current Piotroski F-Score of 4 is 33% below median its 10-year median of 6.00. Over the past 10 years, this metric has ranged from a low of 4.00 to a high of 7.00. The Utilities - Independent Power Producers industry median Piotroski F-Score is 5.00. Mercury NZ's value of 4 is 20% below this industry median. Based on the distribution chart, Mercury NZ ranks #247 out of 420 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 Piotroski F-Score compare to competitors?
According to the Utilities - Independent Power Producers industry distribution chart, Mercury NZ ranks #247 out of 420 companies for Piotroski F-Score. This places Mercury NZ in the lower half of its industry. The industry median Piotroski F-Score is 5.00. Mercury NZ's value of 4 is 20% below this benchmark. Historically, Mercury NZ's own Piotroski F-Score has ranged from 4.00 to 7.00 over the past decade. While the company's 10-year median is 6.00 vs. the industry median of 5.00, 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 Piotroski F-Score for an Utilities - Independent Power Producers company?
The median Piotroski F-Score among Utilities - Independent Power Producers companies is 5.00, based on 420 companies in the industry. Companies in the top quartile (top 25%) have a Piotroski F-Score significantly above this median, while those in the bottom quartile fall well below. However, Piotroski F-Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Mercury NZ's current Piotroski F-Score of 4 is 20% 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 Piotroski F-Score mean?
A high Piotroski F-Score can signal that a stock is expensive relative to its fundamentals. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Mercury NZ and its competitors. For the Utilities - Independent Power Producers industry, the median Piotroski F-Score is 5.00 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Mercury NZ's current Piotroski F-Score is 4, which is 33% below median its own 10-year median of 6.00. 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 Piotroski F-Score is 4, which is 33% below median its 10-year median of 6.00 and 20% below the Utilities - Independent Power Producers industry median of 5.00. 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 Piotroski F-Score calculated?
Piotroski F-Score is calculated from a company's financial statements. For Mercury NZ (MGHTF), the current Piotroski F-Score is 4 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 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:
Piotroski F-Score: 4 (33% below median its 10-year median of 6.00)
GF Value™: $4.06 vs. price of $4.37 (7.6% above fair value)
Industry Position: 20% below the Utilities - Independent Power Producers median (#247 of 420)
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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