Updated from 2:39 p.m. EST with new stock pricesTech stocks are modestly down Monday despite a stream of product launches from the largest consumer electronics show of the year as the broader market indices continued to be volatile. Sony ( SNE) gained 3.2% after the company unveiled new products and reported major gains for its Blu-Ray high-definition video format ahead of the Consumer Electronics Show in Las Vegas. The company reported that 1.2 million PlayStation 3 video game consoles were sold in North America during the holiday sales season. Sony said it will offer Skype, the Internet voice calling platform owned by eBay, on its PlayStation Portable handheld entertainment system. Sony was up $1.69 to $54.11. AT&T ( T) added 54 cents, or 1.3%, to $41.43 after Deutsche Bank called the stock its top large-cap pick for 2008 and rated it a buy with a $50 price target. "With an expected return to mid-single digit top-line growth and continued double-digit EPS growth, we believe new investors will be attracted to AT&T other than value investors," said the analyst in the report. NII Holdings ( NIHD), which through its subsidiaries including Nextel offers wireless communications services, rose 9.6% after the company named a new CEO and authorized an additional $500 million for a stock repurchase program. NII said Steven Dussek will join the company as CEO effective Feb. 11.