Spark New Zealand (ASX:SPK) YoY EBITDA Growth: -15.92% (As of Dec. 2025)

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ASX:SPK Spark New Zealand Ltd ASX:SPK
62 GF Score
Price A$1.61
GF Value A$2.70
Valuation Significantly Undervalued
! 8 Warning Signs
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What is Spark New Zealand YoY EBITDA Growth?

Spark New Zealand ASX:SPK +1.26% 62 YoY EBITDA Growth is -15.92% as of Dec. 2025. GuruFocus rates ASX:SPK with a GF Score™ of 62/100 and a GF Value™ of A$2.70 (Significantly Undervalued). The stock has 8 warning signs investors should review.

YoY EBITDA Growth is the percentage change of EBITDA per Share over the past twelve months. Spark New Zealand's YoY EBITDA Growth for the quarter that ended in Dec. 2025 was -15.92%.

Spark New Zealand's EBITDA per Share for the six months ended in Dec. 2025 was A$0.17.

Spark New Zealand YoY EBITDA Growth Historical Data

* Premium members only.

The historical data trend for Spark New Zealand's YoY EBITDA Growth 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 YoY EBITDA Growth Chart

Spark New Zealand Annual Data
Trend Jun16 Jun17 Jun18 Jun19 Jun20 Jun21 Jun22 Jun23 Jun24 Jun25
YoY EBITDA Growth
Get a 7-Day Free Trial Premium Member Only Premium Member Only 2.17 -1.42 47.84 -32.00 -7.16

Spark New Zealand Semi-Annual Data
Jun16 Dec16 Jun17 Dec17 Jun18 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
YoY EBITDA Growth Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only -48.68 -6.51 -26.10 9.06 -15.92
ASX:SPK
62GF Score
Spark New Zealand Ltd ASX:SPK
YoY EBITDA Growth is just one metric. See GF Score™, valuation, warning signs, and more.
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Spark New Zealand YoY EBITDA Growth Calculation

YoY EBITDA Growth is the percentage change of EBITDA per Share over the past twelve months.

Spark New Zealand's YoY EBITDA Growth for the fiscal year that ended in Jun. 2025 is calculated as:

YoY EBITDA Growth (A: Jun. 2025 )
=(EBITDA per Share (A: Jun. 2025 )-EBITDA per Share (A: Jun. 2024 ))/ | EBITDA per Share (A: Jun. 2024 ) |
=(0.519-0.559)/ | 0.559 |
=-7.16 %

Spark New Zealand's YoY EBITDA Growth for the quarter that ended in Dec. 2025 is calculated as:

YoY EBITDA Growth (Q: Dec. 2025 )
=(EBITDA per Share (Q: Dec. 2025 )-EBITDA per Share (Q: Dec. 2024 )) / | EBITDA per Share (Q: Dec. 2024 )) |
=(0.169-0.201)/ | 0.201 |
=-15.92 %

* 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.

Frequently Asked Questions Learn more about YoY EBITDA Growth →
What does a YoY EBITDA Growth of -15.92% mean?
Spark New Zealand (ASX:SPK) has a YoY EBITDA Growth of -15.92% as of Dec. 2025. YoY EBITDA Growth is the percentage change of EBITDA per share over the past 12-month. View historical data for Spark New Zealand and its competitors.
Is Spark New Zealand's YoY EBITDA Growth too high?
Spark New Zealand's current YoY EBITDA Growth is -15.92%. Overall, Spark New Zealand has a GF Score™ of 62/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Spark New Zealand's YoY EBITDA Growth compare to VZ and TMUS?
Spark New Zealand's YoY EBITDA Growth of -15.92% can be compared against companies in the Telecommunication Services industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good YoY EBITDA Growth for a Telecommunication Services company?
A good YoY EBITDA Growth depends on the Telecommunication Services industry context. However, YoY EBITDA Growth 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 YoY EBITDA Growth mean?
A high YoY EBITDA Growth can signal that a stock is expensive relative to its fundamentals. YoY EBITDA Growth is the percentage change of EBITDA per share over the past 12-month. View historical data for Spark New Zealand and its competitors. Spark New Zealand's current YoY EBITDA Growth is -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 Significantly Undervalued. The stock's GF Value™ is A$2.70, compared to a current price of A$1.61 — trading 40.4% below its estimated fair value. The current YoY EBITDA Growth is -15.92%. Spark New Zealand's overall GF Score™ is 62/100 with 8 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is YoY EBITDA Growth calculated?
YoY EBITDA Growth is calculated from a company's financial statements. For Spark New Zealand (ASX:SPK), the current YoY EBITDA Growth is -15.92% 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$1.61 is trading 40.4% below its estimated GF Value™ of A$2.70. GuruFocus considers Spark New Zealand to be Significantly Undervalued.

Key valuation signals for ASX:SPK:

  • YoY EBITDA Growth: -15.92%
  • GF Value™: A$2.70 vs. price of A$1.61 (40.4% below fair value)
  • GF Score™: 62/100 with 8 warning signs

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 New Zealand Business Description

Address 50 Albert Street, Spark City, Level 1, Private Bag 92028, Auckland, NTL, NZL, 1010
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.
62GF Score

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YoY EBITDA Growth is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

A$1.61
Price
A$2.70
GF Value