Check out which companies are making headlines before the bell on Tuesday:
Verizon - RBC Capital Markets upgraded Verizon to "outperform" from "sector perform", in the wake of Verizon's deal to buy out Vodafone's (VOD) stake in Verizon Wireless.
Coty - The beauty products maker reported fiscal fourth quarter profit of three cents per share, beating estimates of a penny, with revenue slightly above consensus. The company sees current quarter revenue down marginally compared to a year ago, in addition to a deceleration of market growth in the U.S. and Europe over the past few months.
Huntsman - The chemical maker will buy the Performance Additives and Titanium Dioxide businesses of Rockwood Holdings for $1.1 billion in cash. Huntsman will also assume unfunded pension liabilities estimated at $225 million.
Royal Philips - The Dutch conglomerate raised its financial targets as well as plans to return $2 billion to shareholders, although it also warned of difficult conditions in many of its markets.
General Motors - The auto giant's Chevy Silverado topped road test ratings done by Consumer Reports, topping Chrysler's Ram 1500.
Barrick Gold - Investors are pushing the gold producer to shake up its board and bring in independent directors. They also want to hasten founder Peter Munk's departure from the company.
FactSet Research - The financial data provider earned $1.20 per share, excluding certain items, for its fourth quarter, one cent below estimates, although revenue was slightly above consensus.
Delta Air Lines, U.S. Airways - JPMorgan Chase upgraded both airline stocks to "overweight" from "neutral", noting both increasing margins for Delta and better prospects than generally seen for U.S. Airways. The bank says this scenario should hold even if its planned American Airlines merger doesn't survive legal challenges.
Pandora-The internet radio service announced a secondary stock offering. Pandora will offer 10 million shares, while a stakeholder will put an additional four million shares on the market.
Outerwall-The company cut its third quarter and fiscal 2013 outlook, due in part to lower-than-expected revenues from the Redbox DVD rental unit. Outerwall, the company formerly known as Coinstar, also plans $100 million in stock buybacks.
Lockheed Martin - The Netherlands will purchase 37 of Lockheed's F-35 Joint Strike Fighter jets, according to Reuters. The jet has been the subject of much controversy because of rising costs and delays that have stretched over a period of years.
IBM - IBM will reportedly announce that it will spend $1 billion over the next four to five years on Linux and related technologies. The Wall Street Journal reports the announcement will be made at this week's LinuxCon developer's conference in New Orleans.
ConAgra - JPMorgan Chase has cut its rating on the food producer's shares to "neutral" from "overweight".
—By CNBC's Peter Schacknow
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