Tech Five: Zynga shares surge off CEO switch

Mark Pincus, the co-founder of social games company Zynga, is once again stepping down as its chief executive officer. Who will replace him?

Let's look at tech stocks to watch Wednesday:

Zynga. Shares of the games company soared in early trading after board member Frank Gibeau was named the company's new CEO. He starts his new role on March 7. Gibeau replaces Pincus, who assumed the CEO role last year following the run of Don Mattrick, who ran Zynga for nearly two years. Mattrick is credited with overseeing Zynga's shift from desktop games to smartphone and tablet games.

Facebook. Germany's competition watchdog is opening an investigation into the social network over a possible breach in data protection laws tied to how it words its terms of use. The company was fined $109,000 last month in Germany over intellectual property rules.

Amazon. BMO Capital gave the retailing giant's stock an "overperform" rating, reports CNBC. Following a huge dip in stock price to start the year, Amazon shares are up 20% since February 9.

Apple. The tech giant is reportedly appealing an order to help the FBI unlock an iPhone linked to the killings in San Bernardino, Calif. On Tuesday, FBI Director James Comey and Apple general counsel Bruce Sewell testified before Congress about the case.

AT&T. The wireless carrier is launching a DirecTV streaming service that won't require a satellite dish. The company didn't provide details on the types of packages they will offer with the streaming service.

Follow Brett Molina on Twitter: @brettmolina23.