What is the current 10-day volatility of TEF?

As of today, TEF 10-day volatility is 29.04%

What 10-day volatility category does TEF fall into?

Based on its current 10-day historical volatility, TEF falls into the moderate volatility category

What is TEF 10-day volatility 1-year high?

TEF 10-day volatility reached a 1-year high of 73.88% on November 14, 2025

What is TEF 10-day volatility 1-year low?

TEF 10-day volatility reached a 1-year low of 11.12% on June 2, 2025

What is the current 1-month volatility of TEF?

As of today, TEF 1-month volatility is 37.67%

What 1-month volatility category does TEF fall into?

Based on its current 1-month historical volatility, TEF falls into the moderate volatility category

What is TEF 1-month volatility 1-year high?

TEF 1-month volatility reached a 1-year high of 55.60% on December 1, 2025

What is TEF 1-month volatility 1-year low?

TEF 1-month volatility reached a 1-year low of 12.96% on October 10, 2025

What is the current 3-month volatility of TEF?

As of today, TEF 3-month volatility is 30.82%

What 3-month volatility category does TEF fall into?

Based on its current 3-month historical volatility, TEF falls into the moderate volatility category

What is TEF 3-month volatility 1-year high?

TEF 3-month volatility reached a 1-year high of 37.20% on January 23, 2026

What is TEF 3-month volatility 1-year low?

TEF 3-month volatility reached a 1-year low of 17.74% on August 19, 2025

What is the current 1-year volatility of TEF?

As of today, TEF 1-year volatility is 28.97%

What 1-year volatility category does TEF fall into?

Based on its current 1-year historical volatility, TEF falls into the moderate volatility category

What is TEF 1-year volatility 1-year high?

TEF 1-year volatility reached a 1-year high of 28.97% on March 19, 2026

What is TEF 1-year volatility 1-year low?

TEF 1-year volatility reached a 1-year low of 20.73% on July 25, 2025

TEF Stock Volatility History & Chart Since 1987

10-Day

29.04%

March 19, 2026

Summary

Current Value: As of today, TEF 10-day volatility is 29.04%, with unknown change on March 19, 2026
Value Category: Based on its current 10-day historical volatility, TEF falls into the moderate volatility category
1-Year High: TEF 10-day volatility reached a 1-year high of 73.88% on November 14, 2025
1-Year Low: TEF 10-day volatility reached a 1-year low of 11.12% on June 2, 2025

10-Day Volatility Chart

Performance

TEF Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
10-Day Volatility	Mar 19, 26	29.04%	–	-4.8%	-9.7%	+42.7%	-40.8%	+93.9%	+49.9%
1-Month Volatility	Mar 19, 26	37.67%	–	-0.1%	+50.2%	+103.8%	+0.4%	+103.5%	+80.3%
3-Month Volatility	Mar 19, 26	30.82%	–	-0.6%	-15.6%	-12.1%	+17.9%	+37.8%	+24.4%
1-Year Volatility	Mar 19, 26	28.97%	–	+0.2%	+8.7%	+11.1%	+37.2%	+9.4%	-31.3%
14-Day RSI	Mar 19, 26	51.89	–	+7.0%	+41.7%	+25.7%	-19.5%	-25.3%	+10.9%
Beta	Mar 19, 26	0.10	–	0.0%	+42.9%	+11.1%	-23.1%	-81.5%	-89.0%
ATR	Mar 19, 26	$0.17	–	+2.6%	+99.1%	+123.7%	+56.8%	+165.8%	+96.6%
Price	Mar 19, 26	$4.17	–	+1.5%	+9.4%	+3.0%	-15.1%	-6.7%	-8.8%
200-Day SMA	Mar 19, 26	$4.72	–	-0.3%	-3.4%	-4.2%	+5.9%	+20.1%	+11.0%
50-Day SMA	Mar 19, 26	$4.09	–	+0.2%	-0.0%	-6.0%	-9.2%	-0.4%	-11.7%

10-Day Volatility History

Date	Value	Change
Dec 31, 2025	20.35%	-24.0%
Dec 31, 2024	26.77%	-36.5%
Dec 31, 2023	42.13%	+99.4%
Dec 31, 2022	21.13%	+24.9%
Dec 31, 2021	16.92%	-50.6%
Dec 31, 2020	34.28%	+78.9%
Dec 31, 2019	19.16%	-26.0%
Dec 31, 2018	25.88%	+139.4%
Dec 31, 2017	10.81%	-45.8%
Dec 31, 2016	19.93%	-31.1%
Dec 31, 2015	28.94%	+43.0%
Dec 31, 2014	20.24%	+92.4%
Dec 31, 2013	10.52%	-44.5%
Dec 31, 2012	18.97%	-23.3%
Dec 31, 2011	24.74%	+67.4%
Dec 31, 2010	14.78%	-27.3%
Dec 31, 2009	20.32%	-29.2%
Dec 31, 2008	28.70%	+57.4%
Dec 31, 2007	18.23%	+64.1%
Dec 31, 2006	11.11%	+22.1%

Date	Value	Change
Dec 31, 2005	9.10%	-5.0%
Dec 31, 2004	9.58%	-33.4%
Dec 31, 2003	14.38%	-54.3%
Dec 31, 2002	31.47%	+20.3%
Dec 31, 2001	26.15%	-33.3%
Dec 31, 2000	39.21%	-10.2%
Dec 31, 1999	43.67%	+103.2%
Dec 31, 1998	21.49%	+20.6%
Dec 31, 1997	17.82%	+0.6%
Dec 31, 1996	17.72%	-10.1%
Dec 31, 1995	19.72%	-50.3%
Dec 31, 1994	39.66%	+56.0%
Dec 31, 1993	25.42%	+55.6%
Dec 31, 1992	16.34%	-16.4%
Dec 31, 1991	19.55%	-1.7%
Dec 31, 1990	19.89%	-10.8%
Dec 31, 1989	22.29%	+23.2%
Dec 31, 1988	18.09%	-69.4%
Dec 31, 1987	59.07%	-

FAQ

What is the current 10-day volatility of TEF?
As of today, TEF 10-day volatility is 29.04%
What 10-day volatility category does TEF fall into?
Based on its current 10-day historical volatility, TEF falls into the moderate volatility category
What is TEF 10-day volatility 1-year high?
TEF 10-day volatility reached a 1-year high of 73.88% on November 14, 2025
What is TEF 10-day volatility 1-year low?
TEF 10-day volatility reached a 1-year low of 11.12% on June 2, 2025

1-Month

37.67%

March 19, 2026

Summary

Current Value: As of today, TEF 1-month volatility is 37.67%, with unknown change on March 19, 2026
Value Category: Based on its current 1-month historical volatility, TEF falls into the moderate volatility category
1-Year High: TEF 1-month volatility reached a 1-year high of 55.60% on December 1, 2025
1-Year Low: TEF 1-month volatility reached a 1-year low of 12.96% on October 10, 2025

Performance

TEF Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Month Volatility	Mar 19, 26	37.67%	–	-0.1%	+50.2%	+103.8%	+0.4%	+103.5%	+80.3%
10-Day Volatility	Mar 19, 26	29.04%	–	-4.8%	-9.7%	+42.7%	-40.8%	+93.9%	+49.9%
3-Month Volatility	Mar 19, 26	30.82%	–	-0.6%	-15.6%	-12.1%	+17.9%	+37.8%	+24.4%
1-Year Volatility	Mar 19, 26	28.97%	–	+0.2%	+8.7%	+11.1%	+37.2%	+9.4%	-31.3%
14-Day RSI	Mar 19, 26	51.89	–	+7.0%	+41.7%	+25.7%	-19.5%	-25.3%	+10.9%
Beta	Mar 19, 26	0.10	–	0.0%	+42.9%	+11.1%	-23.1%	-81.5%	-89.0%
ATR	Mar 19, 26	$0.17	–	+2.6%	+99.1%	+123.7%	+56.8%	+165.8%	+96.6%
Price	Mar 19, 26	$4.17	–	+1.5%	+9.4%	+3.0%	-15.1%	-6.7%	-8.8%
200-Day SMA	Mar 19, 26	$4.72	–	-0.3%	-3.4%	-4.2%	+5.9%	+20.1%	+11.0%
50-Day SMA	Mar 19, 26	$4.09	–	+0.2%	-0.0%	-6.0%	-9.2%	-0.4%	-11.7%

1-Month Volatility History

Date	Value	Change
Dec 31, 2025	19.48%	-13.6%
Dec 31, 2024	22.54%	-43.4%
Dec 31, 2023	39.83%	+68.1%
Dec 31, 2022	23.69%	-20.3%
Dec 31, 2021	29.74%	-29.2%
Dec 31, 2020	41.99%	+122.1%
Dec 31, 2019	18.91%	-21.3%
Dec 31, 2018	24.04%	+63.0%
Dec 31, 2017	14.75%	-28.7%
Dec 31, 2016	20.69%	-11.5%
Dec 31, 2015	23.38%	+7.2%
Dec 31, 2014	21.80%	+43.5%
Dec 31, 2013	15.19%	-10.3%
Dec 31, 2012	16.94%	-42.0%
Dec 31, 2011	29.22%	+19.8%
Dec 31, 2010	24.40%	+36.5%
Dec 31, 2009	17.87%	-58.6%
Dec 31, 2008	43.20%	+87.5%
Dec 31, 2007	23.04%	+49.4%
Dec 31, 2006	15.42%	+43.7%

Date	Value	Change
Dec 31, 2005	10.73%	-31.3%
Dec 31, 2004	15.63%	+11.8%
Dec 31, 2003	13.98%	-59.2%
Dec 31, 2002	34.23%	-0.9%
Dec 31, 2001	34.55%	-16.1%
Dec 31, 2000	41.17%	-7.9%
Dec 31, 1999	44.68%	+46.5%
Dec 31, 1998	30.50%	+29.2%
Dec 31, 1997	23.61%	+35.5%
Dec 31, 1996	17.43%	+6.4%
Dec 31, 1995	16.38%	-43.7%
Dec 31, 1994	29.08%	+38.5%
Dec 31, 1993	20.99%	+45.5%
Dec 31, 1992	14.43%	-10.3%
Dec 31, 1991	16.08%	-13.0%
Dec 31, 1990	18.48%	+2.2%
Dec 31, 1989	18.08%	+11.5%
Dec 31, 1988	16.22%	-63.9%
Dec 31, 1987	44.99%	-

FAQ

What is the current 1-month volatility of TEF?
As of today, TEF 1-month volatility is 37.67%
What 1-month volatility category does TEF fall into?
Based on its current 1-month historical volatility, TEF falls into the moderate volatility category
What is TEF 1-month volatility 1-year high?
TEF 1-month volatility reached a 1-year high of 55.60% on December 1, 2025
What is TEF 1-month volatility 1-year low?
TEF 1-month volatility reached a 1-year low of 12.96% on October 10, 2025

3-Month

30.82%

March 19, 2026

Summary

Current Value: As of today, TEF 3-month volatility is 30.82%, with unknown change on March 19, 2026
Value Category: Based on its current 3-month historical volatility, TEF falls into the moderate volatility category
1-Year High: TEF 3-month volatility reached a 1-year high of 37.20% on January 23, 2026
1-Year Low: TEF 3-month volatility reached a 1-year low of 17.74% on August 19, 2025

Performance

TEF Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
3-Month Volatility	Mar 19, 26	30.82%	–	-0.6%	-15.6%	-12.1%	+17.9%	+37.8%	+24.4%
10-Day Volatility	Mar 19, 26	29.04%	–	-4.8%	-9.7%	+42.7%	-40.8%	+93.9%	+49.9%
1-Month Volatility	Mar 19, 26	37.67%	–	-0.1%	+50.2%	+103.8%	+0.4%	+103.5%	+80.3%
1-Year Volatility	Mar 19, 26	28.97%	–	+0.2%	+8.7%	+11.1%	+37.2%	+9.4%	-31.3%
14-Day RSI	Mar 19, 26	51.89	–	+7.0%	+41.7%	+25.7%	-19.5%	-25.3%	+10.9%
Beta	Mar 19, 26	0.10	–	0.0%	+42.9%	+11.1%	-23.1%	-81.5%	-89.0%
ATR	Mar 19, 26	$0.17	–	+2.6%	+99.1%	+123.7%	+56.8%	+165.8%	+96.6%
Price	Mar 19, 26	$4.17	–	+1.5%	+9.4%	+3.0%	-15.1%	-6.7%	-8.8%
200-Day SMA	Mar 19, 26	$4.72	–	-0.3%	-3.4%	-4.2%	+5.9%	+20.1%	+11.0%
50-Day SMA	Mar 19, 26	$4.09	–	+0.2%	-0.0%	-6.0%	-9.2%	-0.4%	-11.7%

3-Month Volatility History

Date	Value	Change
Dec 31, 2025	34.78%	+74.2%
Dec 31, 2024	19.96%	-28.8%
Dec 31, 2023	28.05%	-5.0%
Dec 31, 2022	29.53%	+2.9%
Dec 31, 2021	28.70%	-45.2%
Dec 31, 2020	52.37%	+181.9%
Dec 31, 2019	18.58%	-26.9%
Dec 31, 2018	25.42%	+48.4%
Dec 31, 2017	17.13%	-20.4%
Dec 31, 2016	21.53%	-12.3%
Dec 31, 2015	24.56%	+7.5%
Dec 31, 2014	22.84%	+4.7%
Dec 31, 2013	21.82%	-0.5%
Dec 31, 2012	21.93%	-46.3%
Dec 31, 2011	40.83%	+46.6%
Dec 31, 2010	27.85%	+20.1%
Dec 31, 2009	23.18%	-68.7%
Dec 31, 2008	74.15%	+134.2%
Dec 31, 2007	31.66%	+122.3%
Dec 31, 2006	14.24%	-27.0%

Date	Value	Change
Dec 31, 2005	19.52%	+14.1%
Dec 31, 2004	17.11%	+8.7%
Dec 31, 2003	15.74%	-58.5%
Dec 31, 2002	37.89%	+7.6%
Dec 31, 2001	35.23%	-17.8%
Dec 31, 2000	42.84%	+12.8%
Dec 31, 1999	37.97%	-1.8%
Dec 31, 1998	38.65%	+10.3%
Dec 31, 1997	35.03%	+103.7%
Dec 31, 1996	17.20%	-0.2%
Dec 31, 1995	17.24%	-20.3%
Dec 31, 1994	21.63%	+11.6%
Dec 31, 1993	19.38%	-36.2%
Dec 31, 1992	30.38%	+58.1%
Dec 31, 1991	19.22%	-14.7%
Dec 31, 1990	22.54%	-0.4%
Dec 31, 1989	22.63%	+40.7%
Dec 31, 1988	16.08%	-78.2%
Dec 31, 1987	73.89%	-

FAQ

What is the current 3-month volatility of TEF?
As of today, TEF 3-month volatility is 30.82%
What 3-month volatility category does TEF fall into?
Based on its current 3-month historical volatility, TEF falls into the moderate volatility category
What is TEF 3-month volatility 1-year high?
TEF 3-month volatility reached a 1-year high of 37.20% on January 23, 2026
What is TEF 3-month volatility 1-year low?
TEF 3-month volatility reached a 1-year low of 17.74% on August 19, 2025

1-Year

28.97%

March 19, 2026

Summary

Current Value: As of today, TEF 1-year volatility is 28.97%, with unknown change on March 19, 2026
Value Category: Based on its current 1-year historical volatility, TEF falls into the moderate volatility category
1-Year High: TEF 1-year volatility reached a 1-year high of 28.97% on March 19, 2026
1-Year Low: TEF 1-year volatility reached a 1-year low of 20.73% on July 25, 2025

Performance

TEF Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Year Volatility	Mar 19, 26	28.97%	–	+0.2%	+8.7%	+11.1%	+37.2%	+9.4%	-31.3%
10-Day Volatility	Mar 19, 26	29.04%	–	-4.8%	-9.7%	+42.7%	-40.8%	+93.9%	+49.9%
1-Month Volatility	Mar 19, 26	37.67%	–	-0.1%	+50.2%	+103.8%	+0.4%	+103.5%	+80.3%
3-Month Volatility	Mar 19, 26	30.82%	–	-0.6%	-15.6%	-12.1%	+17.9%	+37.8%	+24.4%
1-Year Volatility	Mar 19, 26	28.97%	–	+0.2%	+8.7%	+11.1%	+37.2%	+9.4%	-31.3%
14-Day RSI	Mar 19, 26	51.89	–	+7.0%	+41.7%	+25.7%	-19.5%	-25.3%	+10.9%
Beta	Mar 19, 26	0.10	–	0.0%	+42.9%	+11.1%	-23.1%	-81.5%	-89.0%
ATR	Mar 19, 26	$0.17	–	+2.6%	+99.1%	+123.7%	+56.8%	+165.8%	+96.6%
Price	Mar 19, 26	$4.17	–	+1.5%	+9.4%	+3.0%	-15.1%	-6.7%	-8.8%
200-Day SMA	Mar 19, 26	$4.72	–	-0.3%	-3.4%	-4.2%	+5.9%	+20.1%	+11.0%
50-Day SMA	Mar 19, 26	$4.09	–	+0.2%	-0.0%	-6.0%	-9.2%	-0.4%	-11.7%

1-Year Volatility History

Date	Value	Change
Dec 31, 2025	26.07%	+43.2%
Dec 31, 2024	18.20%	-27.9%
Dec 31, 2023	25.26%	-9.5%
Dec 31, 2022	27.90%	+2.8%
Dec 31, 2021	27.14%	-47.0%
Dec 31, 2020	51.22%	+183.5%
Dec 31, 2019	18.07%	-16.6%
Dec 31, 2018	21.66%	+17.5%
Dec 31, 2017	18.44%	-44.8%
Dec 31, 2016	33.40%	+32.6%
Dec 31, 2015	25.18%	+28.1%
Dec 31, 2014	19.65%	-17.9%
Dec 31, 2013	23.94%	-32.5%
Dec 31, 2012	35.46%	-2.2%
Dec 31, 2011	36.27%	+4.7%
Dec 31, 2010	34.64%	+14.2%
Dec 31, 2009	30.34%	-33.0%
Dec 31, 2008	45.31%	+87.1%
Dec 31, 2007	24.22%	+49.0%
Dec 31, 2006	16.26%	+0.4%

Date	Value	Change
Dec 31, 2005	16.20%	-24.1%
Dec 31, 2004	21.33%	-14.4%
Dec 31, 2003	24.93%	-40.2%
Dec 31, 2002	41.70%	+9.7%
Dec 31, 2001	38.01%	-14.8%
Dec 31, 2000	44.59%	+20.9%
Dec 31, 1999	36.88%	-15.2%
Dec 31, 1998	43.50%	+58.2%
Dec 31, 1997	27.50%	+52.3%
Dec 31, 1996	18.06%	-9.8%
Dec 31, 1995	20.03%	-27.5%
Dec 31, 1994	27.62%	+33.9%
Dec 31, 1993	20.63%	-20.6%
Dec 31, 1992	25.98%	+16.5%
Dec 31, 1991	22.31%	-3.1%
Dec 31, 1990	23.02%	+29.6%
Dec 31, 1989	17.76%	-26.4%
Dec 31, 1988	24.13%	-57.3%
Dec 31, 1987	56.47%	-

FAQ

What is the current 1-year volatility of TEF?
As of today, TEF 1-year volatility is 28.97%
What 1-year volatility category does TEF fall into?
Based on its current 1-year historical volatility, TEF falls into the moderate volatility category
What is TEF 1-year volatility 1-year high?
TEF 1-year volatility reached a 1-year high of 28.97% on March 19, 2026
What is TEF 1-year volatility 1-year low?
TEF 1-year volatility reached a 1-year low of 20.73% on July 25, 2025

Data Sources & References

TEF Official Website www.telefonica.com
Most Recent Quarterly Report (10-Q) www.sec.gov/Archives/edgar/data/814052/000081405225000100/0000814052-25-000100-index.htm
Most Recent Annual Report (10-K) www.sec.gov/Archives/edgar/data/814052/000081405225000036/0000814052-25-000036-index.htm
TEF Profile on Yahoo Finance finance.yahoo.com/quote/TEF
TEF Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/tef