Tech Five: Yelp seeks rebound after Tuesday plunge

Competition from Facebook sent Yelp shares sliding Tuesday. Is another slump ahead? Meanwhile, Wall Street awaits quarterly results after the bell from software giant Oracle.

Let's look at tech stocks to watch:

Yelp. Shares of the recommendations service closed down more than 9% on Tuesday off word Facebook is testing reviews of local businesses. The new service would also likely hurt Angie's List, which offers similar reviews for a subscription. However, its shares closed up nearly 2%.

Oracle. The software giant reports second quarter earnings after markets close. Analysts project Oracle will report earnings of 60 cents a share on revenue of $9.06 billion.

Google. The company updated its Android Pay service to work within apps. According to TechCrunch, the mobile payments service will work in a number of apps including Jet, Lyft and OpenTable.

IBM. Big Blue opened a global headquarters in Munich which will focus on Internet of Things and its cognitive computing system Watson. The headquarters will feature 1,000 developers, consultants, researchers and designers, said IBM in a statement.

Alibaba. The e-commerce giant is partnering with Disney on a new over-the-top service called DisneyLife to bring the media company's movies, TV shows and games to consumers in China.

Follow Brett Molina on Twitter: @brettmolina23.