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Traders on the floor of the New York Stock Exchange.
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Traders on the floor of the New York Stock Exchange.

Check out which companies are making headlines before the bell:

Family DollarDollar General is bidding $78.50 per share in cash for its dollar store competitor, potentially trumping the deal Family Dollar already has in place to be acquired by Dollar Tree. Dollar General said its deal is financially superior to that agreement, which was worth $74.50 per share in cash.

Home Depot, Lowe's–Credit Suisse said investors should own both stocks ahead of earnings reports this week, as it expects the home improvement retailers to report better than general expected earnings and same-store sales increases.

Cameron International–Cameron is selling its centrifugal compression unit to Ingersoll Rand for $850 million.

CBS–The broadcast giant was added to the "conviction buy" list at Evercore, which said the stock is undervalued given its "highly achievable" earnings estimates for the media company.

SeaWorld Entertainment–Credit Suisse initiated coverage on the theme park operator's shares with an "outperform" rating, saying the stock is likely to be near a bottom after suffering from negative publicity from the "Blackfish" documentary and disappointing overall results.

Tesla —The automaker expanded the warrantyon its Model S electric vehicle. The car's overall warranty will now run for eight years with no mileage limit, matching the one already in place for the battery.

Biogen Idec–The drug maker won FDA approval for its multiple sclerosis treatment Plegridy, which the company sees as an eventual replacement for its best-selling Avonex treatment.

Target–The retailer plans to keep more than 900 of its stores open one to two hours later in hopes of drawing a greater number of customers.

Credit Suisse–The bank played a significant role in thecollapse of Portugal's Espirito Santo bank, according to the Wall Street Journal. The paper said Credit Suisse helped put together billions of dollars in securities issued by offshore investment vehicles that eventually contributed to the collapse.

Interpublic Group–The company is working with banks to formulate its responses to activist investor Elliott Management., according to Dow Jones. Elliott has a 6.7 percent stake in the advertising company, and has reportedly indicated that it will push for a sale.

Google—The search giant is buying JetPac, a maker of city guide apps, for an undisclosed amount.

Kroger–Kroger is among the companies said to be interested in New England supermarket chain Market Basket, according to Bloomberg. Market Basket is said to have drawn interest from up to a dozen possible buyers, including Stop & Shop parent Royal Ahold and Delhaize Group.

General Electric–GE has been reinitiated at Credit Suisse with a rating of "outperform", saying it sees an expansion in GE's industrial margins.

By CNBC's Peter Schacknow

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