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.
Spark New ZealandASX:SPK +2.48%68 Earnings Yield (Joel Greenblatt) % is 0.00% as of Dec. 2025. GuruFocus rates ASX:SPK with a GF Score™ of 68/100 and a GF Value™ of A$2.68 (Significantly Undervalued). The stock has 8 warning signs investors should review. Among 372 Telecommunication Services companies, Spark New Zealand ranks better than 66.67% on this metric.
Spark New Zealand's Enterprise Value for the quarter that ended in Dec. 2025 was A$5,631 Mil.
Spark New Zealand's EBIT for the trailing twelve months (TTM) ended in Dec. 2025 was A$427 Mil. Spark New Zealand's Earnings Yield (Joel Greenblatt) for the quarter that ended in Dec. 2025 was 0.00%.
The historical rank and industry rank for Spark New Zealand's Earnings Yield (Joel Greenblatt) % or its related term are showing as below:
ASX:SPK'
s Earnings Yield (Joel Greenblatt) % Range Over the Past 10 Years
Min: 5.25 Med: 6.87 Max: 12.91
Current: 7.95
During the past 13 years, the highest Earnings Yield (Joel Greenblatt) of Spark New Zealand was 12.91%. The lowest was 5.25%. And the median was 6.87%.
ASX:SPK's Earnings Yield (Joel Greenblatt) % is ranked better than 66.67% of 372
companies
in the Telecommunication Services industry
Industry Median: 5.635
vs ASX:SPK: 7.95
Joel Greenblatt's definition of earnings yield has the same problems the regular earnings yield does. It does not consider the growth of the company. It only looks at one-year's business operation. For cyclical companies, the earnings yield is usually highest at the peak of the business cycle. But these earnings are rarely sustainable.
A better indicator of the attractiveness of an investment which takes growth into account is the Forward Rate of Return (Yacktman) %. Spark New Zealand's Forward Rate of Return (Yacktman) % for the quarter that ended in Dec. 2025 was 0.00%. The Forward Rate of Return uses the normalized Free Cash Flow of the past five years, and considers growth. The forward rate of return can be thought of as the return that investors buying the stock today can expect from it in the future.
Spark New Zealand (ASX:SPK) Earnings Yield (Joel Greenblatt) % Explanation
Joel Greenblatt defines the earnings yield using the above equation because it more accurately reflects the company's profitability relative to its stock price. Items like interest payment and tax etc. are not directly related to the company's operational profitability.
Enterprise Value instead of market cap (share price) is used in the calculation because it is the real price stock and bond investors together pay for the company.
Be Aware
Joel Greenblatt's definition of earnings yield has the same problems the regular earnings yield does. It does not consider the growth of the company. It only looks at one-year's business operation. For cyclical companies, the earnings yield is usually highest at the peak of the business cycle. But these earnings are rarely sustainable.
Spark New Zealand Earnings Yield (Joel Greenblatt) % Related Terms
Spark New Zealand Earnings Yield (Joel Greenblatt) % Historical Data
* Premium members only.
The historical data trend for Spark New Zealand's Earnings Yield (Joel Greenblatt) % 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.
Spark New Zealand Earnings Yield (Joel Greenblatt) % Chart
For the Telecom Services subindustry, Spark New Zealand's Earnings Yield (Joel Greenblatt) %, along with its competitors' market caps and Earnings Yield (Joel Greenblatt) % 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.
Spark New Zealand Earnings Yield (Joel Greenblatt) % vs Telecommunication Services Industry
For the Telecommunication Services industry and Communication Services sector, Spark New Zealand's Earnings Yield (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where Spark New Zealand's Earnings Yield (Joel Greenblatt) % falls into.
Spark New Zealand Earnings Yield (Joel Greenblatt) % Calculation
In his book, The Little That Beat the Market, hedge fund manager Joel Greenblatt defines Earnings Yield as operating income divided by enterprise value.
Spark New Zealands Earnings Yield (Joel Greenblatt) for the fiscal year that ended in Jun. 2025 is calculated as
For company reported semi-annually or annually, GuruFocus only calculate annual data for Earnings Yield (Joel Greenblatt) and apply the annual figure to corresponding quarter.
What does a Earnings Yield (Joel Greenblatt) % of 0.00% mean?
Spark New Zealand (ASX:SPK) has a Earnings Yield (Joel Greenblatt) % of 0.00% as of Dec. 2025. Joel Greenblatt's earnings yield equals the ratio of earnings before interest and taxes to enterprise value. View historical data on Spark New Zealand and its competitors. Over the past decade, Spark New Zealand's Earnings Yield (Joel Greenblatt) % has ranged from 5.25 to 12.91. According to the industry distribution chart, Spark New Zealand ranks #124 out of 372 companies in the Telecommunication Services industry, placing it in the top 33.3%.
Is Spark New Zealand's Earnings Yield (Joel Greenblatt) % too high?
Spark New Zealand's current Earnings Yield (Joel Greenblatt) % is 0.00%. Over the past 10 years, this metric has ranged from a low of 5.25 to a high of 12.91. Based on the distribution chart, Spark New Zealand ranks #124 out of 372 companies in the Telecommunication Services industry, which is above the industry midpoint. Overall, Spark New Zealand has a GF Score™ of 68/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Spark New Zealand's Earnings Yield (Joel Greenblatt) % compare to VZ and TMUS?
According to the Telecommunication Services industry distribution chart, Spark New Zealand ranks #124 out of 372 companies for Earnings Yield (Joel Greenblatt) %. This puts Spark New Zealand in the upper half of its industry. The industry median Earnings Yield (Joel Greenblatt) % is 5.64. Historically, Spark New Zealand's own Earnings Yield (Joel Greenblatt) % has ranged from 5.25 to 12.91 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Earnings Yield (Joel Greenblatt) % for a Telecommunication Services company?
The median Earnings Yield (Joel Greenblatt) % among Telecommunication Services companies is 5.64, based on 372 companies in the industry. Companies in the top quartile (top 25%) have a Earnings Yield (Joel Greenblatt) % significantly above this median, while those in the bottom quartile fall well below. However, Earnings Yield (Joel Greenblatt) % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Earnings Yield (Joel Greenblatt) % mean?
A high Earnings Yield (Joel Greenblatt) % can signal that a stock is expensive relative to its fundamentals. Joel Greenblatt's earnings yield equals the ratio of earnings before interest and taxes to enterprise value. View historical data on Spark New Zealand and its competitors. For the Telecommunication Services industry, the median Earnings Yield (Joel Greenblatt) % is 5.64 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Spark New Zealand's current Earnings Yield (Joel Greenblatt) % is 0.00%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Spark New Zealand stock overvalued right now?
Based on GuruFocus' analysis, Spark New Zealand (ASX:SPK) is currently considered Significantly Undervalued. The stock's GF Value™ is A$2.68, compared to a current price of A$1.66 — trading 38.2% below its estimated fair value. The current Earnings Yield (Joel Greenblatt) % is 0.00%. Spark New Zealand's overall GF Score™ is 68/100 with 8 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Earnings Yield (Joel Greenblatt) % calculated?
Earnings Yield (Joel Greenblatt) % is calculated from a company's financial statements. For Spark New Zealand (ASX:SPK), the current Earnings Yield (Joel Greenblatt) % is 0.00% 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 Spark New Zealand (ASX:SPK) Overvalued in 2026?
Based on GuruFocus' analysis, Spark New Zealand stock appears to be undervalued.
The current stock price of A$1.66 is trading 38.2% below its estimated GF Value™ of A$2.68.
GuruFocus considers Spark New Zealand to be Significantly Undervalued.
Key valuation signals for ASX:SPK:
Earnings Yield (Joel Greenblatt) %: 0.00%
GF Value™: A$2.68 vs. price of A$1.66 (38.2% below fair value)
No single metric tells the full story. See the ASX:SPK stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Spark is one of only three integrated telecommunications companies in New Zealand. It is the leading mobile network operator with low- to mid-40% subscriber and revenue share, and the dominant provider of fixed-line broadband services with a mid-30% subscriber share. It has a big position in the New Zealand corporate and wholesale telecommunications services provision space. Spark supplements its core telecommunications operations and related infrastructure with IT products and services across cloud, managed data and networks, procurement, data centers, and Internet of Things. Its operations are all based in New Zealand, except for its 41% interest in Southern Cross Submarine Cables, which has zero book value and to which Spark has no funding obligations.
68GF Score
Get the complete analysis for ASX:SPK
Earnings Yield (Joel Greenblatt) % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
ASX:SPK has been successfully added to your 
