Tech Five: LinkedIn freefalls off outlook

Shares of social network LinkedIn are diving off its latest earnings results. Let's take a look at the technology stocks to watch Friday:

LinkedIn. A weak outlook for the second quarter sent shares of LinkedIn down more than 20% in pre-market trading, despite beating Wall Street forecasts for the first quarter. LinkedIn's projected second-quarter revenue reached $670-$675 million, well below Wall Street predictions of $717.5 million.

Tesla. The company best known for its electric cars is moving into homes and businesses. At an event Thursday, CEO Elon Musk unveiled the Powerwall, a home battery system that starts at $3,500.

Intel. The chipmaker signed a standstill agreement with rival Altera that expires in June, reports Reuters. According to the report, once the agreement expires, Intel could launch a hostile bid to take over Altera.

Apple. Have a tattoo on your wrist? Then you might find trouble using the Apple Watch. The issue relates to the heart rate sensor, which has trouble measuring heart rate through tattoo ink.

Microsoft. Don't count smartphones among the devices that will host Windows 10 this summer, reports The Verge. A version of the operating system is expected to appear on Windows Phone devices at a later date.

Follow Brett Molina on Twitter: @brettmolina23.