Check out which companies are making headlines before the bell:
Darden Restaurants — Darden shares rose more than 4 percent in premarket trading after the firm reported mixed quarterly results. Olive Garden's parent company posted fiscal first-quarter earnings of 88 cents per share, 6 cents a share above estimates. Revenue came in slightly below consensus, however. Darden also raised its fiscal-year earnings guidance to a range of $3.87 to $3.97 s share from $3.80 to $3.90 a share.
Cypress Semiconductor — A Securities and Exchange Commission filing showed the company adopted a restructuring plan on September 27. Cypress expects to cut about 500 jobs, or approximately 8 percent of its total workforce.
CME Group — The company said its average daily volume rose 6 percent year over year in September to 15 million contracts per day. Metals volume averaged 383,00 contracts per day last month, up 30 percent from September 2015, while energy volume rose 25 percent year over year.
Aegion — The Missouri-based company posted mixed quarterly results, with second-quarter adjusted earnings per share beating consensus by 1 cent a share. Sales missed estimates, however. Aegion also said in a statement that its "adjusted 2016 EPS will likely fall below adjusted result in 2015."
Netflix — MarketWatch reported the streaming giant's stock was bolstered by speculation that it could be a taken over by Walt Disney. The site cited a client note from R.W. Baird analyst William Power, who wrote Netflix has been the subject of "recent M&A rumors," and "whether Disney, Apple or someone else, Netflix could become a target."
Salesforce.com — Salesforce entered an agreement to buy Krux, a San Francisco-based software start-up, for about $700 million in cash and stock, The Wall Street Journal first reported. Salesforce shares were up marginally before the bell.
Dynegy — The Texas-based electric company named Martin Daley its new chief operating officer as it gets set to close the takeover of French utility firm ENGIE. "The executive management team we have in place will support our goal of optimizing our post-ENGIE acquisition company to best succeed in a competitive and changing energy environment," CEO Robert Flexon said in a statement.
Transocean — Transocean shares rebounded 2 percent in premarket trading, a day after falling 7.6 percent following the announcement that the company had lost its contract for Discover India, an ultra-deepwater drillship. The contract was originally scheduled to end January 2021.
Alphabet — Alphabet subsidiary Google is expected to launch a series of new smartphones in an attempt to compete with Apple and Amazon.
Apple — Apple has launched its contactless payment service in Russia, the U.S. technology announced on Tuesday, as it continues the global rollout of Apple Pay.
—CNBC's Arjun Kharpal contributed to this report.