Dean Foods, Sprint Nextel, Yahoo, Barclays, France Telecom, Alcatel Lucent, Infosys and Sony Corp. are among the companies whose shares are moving in pre-market trading Tuesday.

Dean Foods Co. (DF) stock surged 4.77 percent to $14.06 in pre-market trading. The company stock slumped more than 7 percent in regular trading Monday after it was downgraded to “market perform” rating from “outperform” rating at BMO Capital Markets.

Sprint Nextel Corp. (S) stock surged 2.60 percent to $3.55 in pre-market trading. The company announced Monday that it has turned on its 4G Long Term Evolution (LTE) services to 15 cities surrounding the Atlanta, Dallas, Houston, Kansas City and San Antonio markets.

Yahoo! Inc. (YHOO) stock surged 2.84 percent to $16.09 in pre-market trading. After market close, the company is expected to report second quarter net income of $0.23 per share on revenue of $1.1 billion, up from $0.18 per share on revenue of $1.08 billion in the same period a year earlier. The company also announced Monday that it has appointed Marissa Mayer as President and Chief Executive Officer and Member of the Board of Directors, with effect from July 17, 2012.

Barclays Plc. (BCS) stock gained 2.11 percent to $10.15 in pre-market trading. The stock has a 52-week low of $8.38, a 52-week high of $16.41 and $30.40 billion in market capitalization.

France Telecom SA (FTE) stock gained 1.75 percent to $13.39 in pre-market trading. Over the weekend, the company stock was upgraded to “hold” rating from “sell” at Deutsche Bank.

Alcatel Lucent SA (ALU) stock slumped 13.87 percent to $1.18 in pre-market trading. Alcatel announced Tuesday that based on the analysis of the second quarter preliminary financial results, it expects second quarter adjusted operating income to be a loss of around 40 million euros with revenues above 3.5 billion euros. The figures reflect a good sequential growth in sales with all geographies and divisions growing but a slower than expected business mix improvement.

Infosys Ltd. (INFY) stock slumped 7.04 percent to $36.56 in pre-market trading. The stock has a 52-week low of $38.12, a 52-week high of $64.00 and $22.47 billion in market capitalization.

Sony Corp. (SNE) stock declined 1.75 percent to $12.38 in pre-market trading. The stock has a 52-week low of $12.39, a 52-week high of $27.25 and $12.65 billion in market capitalization.

Sony Barclays Deutsche Bank Infosys