Nippon Telephone (NYSE: NTT), a Japanese based telecommunications company, closed at $24.17 Thursday. NTT January option implied volatility of 60 is above its 26-week average of 35 according to Track Data, suggesting larger price movement.

China Telecom (NYSE: CHA), a provider of wireline telecommunication services in China, closed at $39 Thursday. Goldman Sachs has a Sell rating on CHA. CHA overall option implied volatility of 91 is above its 26-week average of 60 according to Chicago, suggesting larger price movement.

Deutsche Telekom (NYSE: DT), Europe's largest telecommunications carrier by sales, closed at $13.99 Thursday. DT January option implied volatility of 54 is above its 26-week average of 48 according to Track Data, suggesting larger price movements.

Telmex (NYSE: TMX), an operator of wireline telecommunication systems in Mexico, closed at $17.28 Thursday. TMX December option implied volatility of 66 is above its 26-week average of 49 according to Track Data, suggesting larger price movement.

Option Update is provided by Stock Specialist Paul Foster of theflyonthewall.com