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Spark New ZealandASX:SPK +0.28%70 Shiller PE Ratio is 7.40 as of Aug. 29, 2026, which is 54% below its 10-year median of 15.92. GuruFocus rates ASX:SPK with a GF Score™ of 70/100 and a GF Value™ of A$2.20 (Modestly Undervalued). The stock has 7 warning signs investors should review. Among 218 Telecommunication Services companies, Spark New Zealand ranks better than 86.7% on this metric.
The historical rank and industry rank for Spark New Zealand's Shiller PE Ratio or its related term are showing as below:
ASX:SPK'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 6.29 Med: 15.92 Max: 22.71
Current: 7.31
During the past 13 years, Spark New Zealand's highest Shiller PE Ratio was 22.71. The lowest was 6.29. And the median was 15.92.
ASX:SPK's Shiller PE Ratio is ranked better than 86.7% of 218
companies
in the Telecommunication Services industry
Industry Median: 17.41
vs ASX:SPK: 7.31
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.
Spark New Zealand's adjusted earnings per share data of for the fiscal year that ended in Jun26 was A$0.217. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is A$0.24 for the trailing ten years ended in Jun26.
Shiller PE for Stocks: The True Measure of Stock Valuation
Spark New Zealand (ASX:SPK) 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.
Spark New Zealand Shiller PE Ratio Related Terms
Spark New Zealand Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Spark New Zealand'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.
ASX:SPK vs VZ, TMUS, T: Shiller PE Ratio Comparison
For the Telecom Services subindustry, Spark New Zealand'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.
Spark New Zealand Shiller PE Ratio vs Telecommunication Services Industry
For the Telecommunication Services industry and Communication Services sector, Spark New Zealand's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Spark New Zealand'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.
* 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's E10 for the fiscal year that ended in Jun26 is calculated as:
For example, Spark New Zealand'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.
Spark New Zealand (ASX:SPK) has a Shiller PE Ratio of 7.40 as of Aug. 29, 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 Spark New Zealand and its competitors. This is 54% below median its historical median of 15.92. Over the past decade, Spark New Zealand's Shiller PE Ratio has ranged from 6.29 to 22.71. According to the industry distribution chart, Spark New Zealand ranks #29 out of 218 companies in the Telecommunication Services industry, placing it in the top 13.3%.
Is Spark New Zealand's Shiller PE Ratio too high?
Spark New Zealand's current Shiller PE Ratio of 7.40 is 54% below median its 10-year median of 15.92. Over the past 10 years, this metric has ranged from a low of 6.29 to a high of 22.71. The Telecommunication Services industry median Shiller PE Ratio is 17.41. Spark New Zealand's value of 7.40 is 57.5% below this industry median. Based on the distribution chart, Spark New Zealand ranks #29 out of 218 companies in the Telecommunication Services industry, which is in the top quartile — a strong position relative to peers. Overall, Spark New Zealand has a GF Score™ of 70/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Spark New Zealand's Shiller PE Ratio compare to VZ and TMUS?
According to the Telecommunication Services industry distribution chart, Spark New Zealand ranks #29 out of 218 companies for Shiller PE Ratio. This places Spark New Zealand in the top 13% of its industry — outperforming the majority of peers. The industry median Shiller PE Ratio is 17.41. Spark New Zealand's value of 7.40 is 57.5% below this benchmark. Historically, Spark New Zealand's own Shiller PE Ratio has ranged from 6.29 to 22.71 over the past decade. While the company's 10-year median is 15.92 vs. the industry median of 17.41, Spark New Zealand 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 Shiller PE Ratio for a Telecommunication Services company?
The median Shiller PE Ratio among Telecommunication Services companies is 17.41, based on 218 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. Spark New Zealand's current Shiller PE Ratio of 7.40 is 57.5% 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 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 Spark New Zealand and its competitors. For the Telecommunication Services industry, the median Shiller PE Ratio is 17.41 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Spark New Zealand's current Shiller PE Ratio is 7.40, which is 54% below median its own 10-year median of 15.92. 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 Modestly Undervalued. The stock's GF Value™ is A$2.20, compared to a current price of A$1.78 — trading 19.3% below its estimated fair value. The current Shiller PE Ratio is 7.40, which is 54% below median its 10-year median of 15.92 and 57.5% below the Telecommunication Services industry median of 17.41. Spark New Zealand's overall GF Score™ is 70/100 with 7 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 Spark New Zealand (ASX:SPK), the current Shiller PE Ratio is 7.40 as of Aug. 29, 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 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$1.78 is trading 19.3% below its estimated GF Value™ of A$2.20.
GuruFocus considers Spark New Zealand to be Modestly Undervalued.
Key valuation signals for ASX:SPK:
Shiller PE Ratio: 7.40 (54% below median its 10-year median of 15.92)
GF Value™: A$2.20 vs. price of A$1.78 (19.3% below fair value)
Industry Position: 57.5% below the Telecommunication Services median (#29 of 218)
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.
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