Check out which companies are making headlines before the bell:
Apple—Wall Street firm Canaccord Genuity issued a report showing Apple earned 92 percent of the total profits of the top eight smartphone makers during the first quarter. Separately, Apple was upgraded to "buy" from "hold" at Societe Generale on recent share weakness and optimism about the launch of new iPhone versions in the fall.
Depomed—The drug company instituted anti-takeover measures following its rejection of Horizon Pharma's July 7 $1.75 billion all-stock buyout offer.
Jarden Corp.—The consumer products maker is buying The Waddington Group, a privately held maker of disposable tablewear, for $1.35 billion.
Marathon Petroleum—Marathon's master limited partnership, MPLX, will merge with MarkWest Energy Partners in a $15.6 billion cash-and-stock deal. MarkWest unit holders will receive 1.09 common units of MPLX and $3.37 in cash for every unit they now hold.
Platform Specialty Products—Platform is buying U.K.-based chemical maker Alent for about $2.1 billion in cash. Platform Specialty said the deal would save it about $50 million annually.
Centene—The health insurer was upgraded to "outperform" from "market perform" at FBR Capital Markets, which cites the recent weakness in the shares since the company announced it was buying Health Net for $6.3 billion in cash and stock. FBR said the acquisition will give Centene some unique attributes as well as a major presence in California.
Sony—Sony priced its first new share offering in 26 years at a three percent discount to today's close, as it raises money to boost its image sensors business.
PepsiCo—Susquehanna cut its rating on the stock to "neutral" from "positive," on what it sees as the reduced possibility of a split-off or buyout bid.
Comcast—Comcast is beta testing a new streaming service that would cost $15 per month and would offer HBO and about a dozen other networks. Separately, the NBCUniversal parent's movie "Minions" topped the weekend box office by taking in $115.2 million in North American ticket sales. (Disclosure: NBCUniversal is the parent company of CNBC.)
Edwards Lifesciences—The medical device maker is buying CardiAQ Valve Technologies for up to $400 million. Privately held CardiAQ specializes in less invasive heart valve replacements.
Unilever—Unilever is searching for a new chairman, according to Sky News. Michael Treschow has served as the consumer products giant's chairman since 2007.
Starbucks—The coffee chain is spearheading a multi-company initiative to hire 100,000 young minority workers over the next three years. Other companies involved in the effort include Alaska Air, CVS Health, Microsoft, and Wal-Mart Stores.
United Technologies—The stock will continue to be on watch, following reports late last week that Lockheed Martin was near a deal to buy the company's Sikorsky aircraft unit for more than $8 billion.
Weight Watchers International—Weight Watchers got a positive mention in the latest Barron's, which said the stock could offer a potential 50 percent gain to risk-tolerant investors. The troubled weight loss company has seen its stock lose 84 percent of its value so far this year.
Garmin—Garmin was also mentioned positively in Barron's, on the idea that Garmin will benefit from the increasing popularity in wearable technology while offering a more attractive valuation than recently public competitor Fitbit.
Royal Caribbean—The cruise line operator's Celebrity Cruises unit has named the industry's first female captain. Kate McCue will assume the helm of the Celebrity Summit in August.
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