"Well managed, dominant firms use downturns to become more powerful -- and that's definitely what Telefonica (NYSE: TEF) is up to," says Roger Conrad in The Utility Forecaster.

"Incorporated in 1924 as a unit of US-based ITT, the Spain-based company now serves 47 million customers in its home country, 150 million in 14 Latin American nations and 45 million elsewhere in Europe.

"Thus far in the recession, diversity and dominance of fast-growing markets has kept Telefonica growing. Overall global customer rolls increased by 15.2% through the third quarter 2008.

Validea is a fascinating newsletter that assesses stocks based on the known criteria of "legendary" stock investors, such as Warren Buffett and Peter Lynch.

Here, editor John Reese reviews Telefonica (NYSE: TEF) -- a Spain-based telecom firm with operates in Europe and Latin America -- based on the strategy of quantitative analyst James O'Shaughnessy.

"James O'Shaughnessy has noted that 'disciplined implementation of active strategies is the key to performance.' He should know; his study of 44 years of stock market data is one of the most extensive ever of the market.

"The system he devised based on that research produced average back-tested returns of 22% per year for those 44 years. At times like these, it's more important than ever to heed his advice, and keep your emotions in check by focusing on fundamentals.

"Telefonica (NYSE: TEF), based in Madrid, Telefonica is involved in the communications, information, and entertainment arenas in Europe, Africa, and Latin America. The firm has a presence in more than 20 countries and more than 218 million customers.