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Check out which companies are making headlines before the bell:

Home Depot —The home improvement chain reported adjusted quarterly profit of $1.16 per share, 1 cent above estimates, with revenue also above forecasts. Same-store sales were also better than expected, and Home Depot raised its full-year earnings and sales forecasts.

Wal-Mart —The retail giant earned an adjusted $1.03 per share for the first quarter, 1 cent below estimates, with revenue also below forecasts. Comparable-store sales also registered a lower-than-expected increase for the quarter.

Dick's Sporting Goods —The sporting goods retailer beat estimates by 4 cents with quarterly profit of 57 cents per share, with revenue essentially in line. However, its comparable-store sales increase of 1 percent was shy of the 1.5 percent consensus. The company also raised the low end of its full-year earnings guidance.

Royal Caribbean —JPMorgan Chase upgraded the cruise line operator's stock to "overweight" from "neutral," saying the company will benefit from new ship introductions in more profitable markets like China and the Asia Pacific region.

Lumber Liquidators —Cantor Fitzgerald cut its rating on the flooring company to "hold" from "buy," citing the regulatory and legal risks facing the company.

MasterCard —Pacific Crest upgraded MasterCard to "overweight" from "sector weight," saying the credit card issuer is in position to benefit from regulatory changes in Europe.

Urban Outfitters —The apparel retailer missed estimates by 5 cents with quarterly profit of 25 cents per share. Revenue was also well below estimates, and its comparable store sales increase of 4 percent was below the consensus estimate of a 5.2 percent increase. Urban Outfitters was hurt by expenses related to its online business.

Take-Two Interactive —The video game publisher beat estimates by 22 cents with adjusted quarterly profit of 49 cents per share, but Take-Two's revenue was below forecasts. The "Grand Theft Auto" maker gave better than expected current quarter guidance, although its full-year forecast is below Street estimates, and it also announced a 10 million share increase in its stock buyback program.

Agilent Technologies —The maker of testing equipment reported adjusted quarterly profit of 38 cents per share, 1 cent below estimates, and its revenue missed the mark as well. Agilent also gave current quarter revenue and earnings guidance that falls largely below analyst forecasts. The company has been pointing to currency-related issues as a negative factor, but does say it is seeing "excellent order momentum".

MBIA —MBIA announced a secondary offering of 27,250,000 shares. The municipal bond insurer is not selling any of those shares, nor will it receive any proceeds.

Starbucks —The coffee chain announced a partnership with music streaming service Spotify, which will allow Starbucks rewards program members access to Spotify music.

Vodafone —The mobile phone company announced its first quarterly sales rise in almost three years, and also predicted 2016 earnings growth after seven straight years of decline.

Unilever —Chief Financial Officer Jean-Marc Huet is stepping down, to be succeeded by vice president Graeme Pitkethly.

Yahoo —Yahoo's chief information officer Mike Kail has left the company, just nine months after joining Yahoo from Netflix.

Baidu —Baidu, Uber, and Apax are planning to jointly bid for Nokia 's maps unit, according to Bloomberg.

Apple —Apple is not planning to enter the TV market, according to The Wall Street Journal. That runs counter to an assertion made by investor Carl Icahn in a letter yesterday in which he urged Apple to increase its stock buybacks and said the stock is worth $240 per share