Telefonica (BUE:TELFY) Volatility: N/A% (As of Jul. 15, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
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.
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Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
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.

BUE:TELFY Telefonica SA BUE:TELFY
63 GF Score
Price ARS689.00
GF Value ARS716.64
! 7 Warning Signs
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What is Telefonica Volatility?

Telefonica BUE:TELFY 63 Volatility is N/A% as of Jul. 15, 2026. GuruFocus rates BUE:TELFY with a GF Score™ of 63/100 and a GF Value™ of ARS716.64. The stock has 7 warning signs investors should review.

Volatility is a statistical measure of the dispersion of returns for a given security or market index, it shows how the price swings around its mean. The volatility here is measured as the annualized standard deviation between monthly returns from the security over the past year. In most cases, the higher the volatility, the riskier the security.

Telefonica does not have enough data to calculate Volatility.

Telefonica  (BUE:TELFY) Volatility Explanation

Volatility is a statistical measure of the dispersion of returns for a given security or market index. It’s often measured as standard deviation or variance of historical returns over a certain period. The volatility here is measured as the annualized standard deviation between monthly returns from the security over the past year.

Volatility reflects the uncertainty or risk of a security’s value. Generally speaking, a higher volatility suggests a higher risk, because it implies a wider fluctuation around average price. This means the price of the security can change dramatically in either direction within a short period. Conversely, a lower volatility means that the security's price is more steady, which suggests a lower risk.

Another measurement of relative volatility is Beta. Beta is a measure of systematic risk of a security or a portfolio in comparison to the market as a whole. Beta is usually compared to 1. A beta of greater than 1 indicates that the security's price will be more volatile than the market.

Telefonica Volatility Related Terms

BUE:TELFY
63GF Score
Telefonica SA BUE:TELFY
Volatility is just one metric. See GF Score™, valuation, warning signs, and more.
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Telefonica  (BUE:TELFY) Volatility Calculation

The annualized volatility is calculated as following:

σA=σM * √12
=√ 1/(n-1) ∑(Ri - R')^2 * √12

Where: σM is the monthly volatility, n is the number of months in the period, Ri is the security's historical monthly returns and R' is the arithmetic mean of monthly returns.

* 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 Volatility →
What does a Volatility of N/A% mean?
Telefonica (BUE:TELFY) has a Volatility of N/A% as of Jul. 15, 2026. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on Telefonica and its competitors.
Is Telefonica's Volatility too high?
Telefonica's current Volatility is N/A%. Overall, Telefonica has a GF Score™ of 63/100, reflecting its overall financial health beyond just this single metric.
How does Telefonica's Volatility compare to TMUS and VZ?
Telefonica's Volatility of N/A% 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 Volatility for a Telecommunication Services company?
A good Volatility depends on the Telecommunication Services industry context. However, Volatility 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 Volatility mean?
A high Volatility can signal that a stock is expensive relative to its fundamentals. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on Telefonica and its competitors. Telefonica's current Volatility is N/A%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Telefonica stock overvalued right now?
Telefonica (BUE:TELFY) has a current Volatility of N/A%. The stock's GF Value™ is ARS716.64, compared to a current price of ARS689.00 — trading 3.9% below its estimated fair value. The current Volatility is N/A%. Telefonica's overall GF Score™ is 63/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Volatility calculated?
Volatility is calculated from a company's financial statements. For Telefonica (BUE:TELFY), the current Volatility is N/A% as of Jul. 15, 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 Telefonica (BUE:TELFY) Overvalued in 2026?

Based on GuruFocus' analysis, Telefonica stock appears to be undervalued. The current stock price of ARS689.00 is trading 3.9% below its estimated GF Value™ of ARS716.64.

Key valuation signals for BUE:TELFY:

  • Volatility: N/A%
  • GF Value™: ARS716.64 vs. price of ARS689.00 (3.9% below fair value)
  • GF Score™: 63/100 with 7 warning signs

No single metric tells the full story. See the BUE:TELFY stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

Telefonica Business Description

Address Ronda de la Comunicacion, s/n, Central Building Auditorium, Telefonica District, Madrid, ESP, 28050
Telefonica is a telecommunications operator with presence in Spain (where it is the incumbent operator), the UK, Germany, Brazil, and Latin American countries. The company derives more than 30% of its revenue from Spain, close to 20% from Germany, and 20% from Brazil. Its UK operations are held through a joint venture with Virgin Media. For several years, Telefonica has been simplifying its corporate structure by selling noncore assets.
63GF Score

Get the complete analysis for BUE:TELFY

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

ARS689.00
Price
ARS716.64
GF Value