Check out which companies are making headlines before the bell:
Health Net—The managed care company is being acquired by rival Centene for about $6.3 billion in cash and stock, or about $78.57 per share. That represents a 21 percent premium over yesterday's closing price for Health Net.
Tesla—The automaker said it delivered 11,507 Model S sedans during the second quarter, a 52 percent increase over a year earlier, but down from the prior quarter's 55 percent year-over-year growth.
HealthSouth—The health care services provider was upgraded to "market outperform" from "market perform" at JMP Securities, based on an upbeat view of the company's growth prospects.
GrubHub—Shares of the online food ordering service were upgraded to "outperform" from "sector perform" at RBC Capital, with RBC pointing to valuation. It did, however, lower its price target for the stock to $42 per share from $46.
Potash—German fertilizer producer K+S plans to reject Potash's takeover bid, according to a Bloomberg report.
AutoNation—The auto retailer reported a 9 percent increase in June retail sales compared to a year earlier, with same-store sales up 7 percent.
Mondelez International—The snack maker completed the previously announced combination of its coffee business with that of D.E. Master Blenders.
Family Dollar—The discount retailer reported adjusted quarterly profit of 74 cents per share. That was 8 cents below estimates, though revenue was in line with expectations. Family Dollar experienced higher costs ahead of the planned acquisition by rival Dollar Tree.
Xoom—Xoom will be acquired by PayPal for $25 per share in cash. That gives shareholders in the digital money transfer services provider a 21-percent premium over Wednesday's closing price. PayPal is currently a unit of eBay but is set to become an independent, publicly traded company later this year.
Boeing—Boeing raised list prices for its jets by 2.9 percent, citing higher costs. Rival Airbus had increased list prices by 3.3 percent back in January.
BP—BP could be the primary topic of conversation at simultaneous news conferences called by attorneys general in Louisiana, Mississippi, Alabama, and Florida this morning. Reports say the events relate to the 2010 BP oil spill in the Gulf of Mexico.
Accenture—The consulting firm sold its Navitaire unit to Spanish travel technology provider Amadeus for $830 million. Navitaire, based on Minneapolis, provides technology services to about 50 airlines.
General Electric—GE is on watch once again today, after the Justice Department sued to block its deal to sell its appliances unit to Sweden's Electrolux, but that company's CEO said this morning he's cautiously optimistic that the deal will go through.
Facebook—Facebook will begin sharing ad revenue with creators of video, hoping to attract better content and more ads.
Hewlett-Packard—HP has filed the paperwork to execute its planned November 1 split into two companies. The SEC filing gives financial details of the two business HP will be creating.