Tech Five: BlackBerry continues its plunge

The wild ride for BlackBerry shares continue Thursday morning. Let's take a look at the tech stocks to watch:

BlackBerry. The smartphone maker's stock price plunged 16% in pre-market trading after the company denied reports that Samsung had approached them about a potential acquisition. Shares closed up more than 30% off a Reuters report that Samsung talked with BlackBerry about a deal worth $7.5 billion. Most of those gains were lost in after-hours trading, after BlackBerry adamantly denied any deal was discussed.

Best Buy. Shares of the electronics chain dipped more than 9% after lowering its forecast for 2015. Sales during the last holiday were up 2.6%, fueled by interest in big-screen TVs and smartphones.

Intel. The chip maker reports fourth quarter earnings after the markets close Wednesday. Intel is forecast to report earnings per share of 66 cents off $14.7 billion in revenue.

Google. The tech company has started talks with automakers on manufacturing a self-driving car to market by 2020, reports Reuters. GM, Ford and Toyota are reportedly among the car companies in talks with Google.

Facebook. The social network started testing a Work program with pilot partners, which would allow a company to create a version of Facebook for employees to foster collaboration. It will be available on both desktops and mobile.

Follow Brett Molina on Twitter: @brettmolina23.