Tech Five: Yelp shares slide off downgrade

Shares of recommendations service Yelp fell Wednesday following a stock downgrade. Meanwhile, Box and Square report quarterly earnings after the bell.

Let's look at tech stocks to watch:

Yelp. UBS dropped the company's stock from "neutral" to "sell," citing weak growth compared to competitors, reports CNBC. Following an early plunge to start the year, Yelp shares have rebounded since the middle of February, rising 45%.

Square. The mobile payments service announces its first earnings results since going public. Analysts polled by S&P Global Market Intelligence project Square will report revenue of $344.74 million during the fourth quarter, with a loss of 10 cents a share.

Box. The cloud storage company reports fourth quarter results after the bell Wednesday. Analysts predict Box will report revenue of $81.73 million with a loss of 29 cents per share.

Microsoft. The company says it will stop supporting Skype for TV in June. Microsoft cites changing user habits, including a shift to using Skype through a mobile device, as a big reason for the move.

Facebook. The Lite version of the social network targeting users on slower network topped 100 million monthly active users in less than nine months. The app is most popular in emerging markets including Brazil and India.

Follow Brett Molina on Twitter: @brettmolina23.