Check out which companies are making headlines before the bell:
ADT — ADT agreed to be bought by private-equity firm Apollo Global for $42 per share, for a total transaction value of $15 billion. The security company will then be combined with Apollo-owned Protection 1, a rival security company. ADT does have a 40-day "go shop" period in which it can seek out a better deal.
Hormel — The food producer reported adjusted quarterly profit of 43 cents per share, beating estimates by 6 cents, although revenue was short of forecasts as pork prices declined. Hormel also raised its 2016 earnings guidance to $1.50 to $1.56 per share, above current Street consensus of $1.47.
Generac — The generator maker reported adjusted quarterly profit of 97 cents per share, 8 cents above estimates, with revenue also coming in above Street forecasts. Residential sales increased, although Generac's sale of mobile products to energy industry customers fell as companies retrenched in the wake of slumping oil prices.
Apple — The company's Apple Pay service will go live in China on Thursday for customers of Industrial and Commercial Bank of China. China will become the fifth country in which the mobile payments service is operating.
Community Health Systems — The company reported an unexpected loss for its latest quarter, with the hospital operator's revenue also falling short of Street forecasts. Total hospital admissions fell 3.6 percent for the quarter, although the company does see adjusted 2016 same-hospital admissions increasing by 0.5 percent to 2.5 percent.
Baxalta — The drug maker reported quarterly profit of 57 cents per share, beating estimates by a penny, with revenue also above estimates. Its performance was led by gains in hematology and immunology treatments.
Zoetis — The maker of animal health products came in 4 cents above estimates with adjusted quarterly profit of 43 cents per share, with revenue beating Street forecasts as well. The company said it was helped by moves to increase efficiency in its business operations.
Kinder Morgan, Energy Transfer Partners, Freeport-McMoRan, Cabot Oil & Gas — These stocks are among the new energy and commodity positions taken by David Tepper's Appoloosa Management, according to the firm's quarterly 13F filing.
General Electric — GE is exploring potential business opportunities involving oil and gasoline in Iran, according to a company spokeswoman quoted by Reuters. That follows a visit to the country recently by Lorenzo Simonelli, the CEO of GE Oil & Gas.
Amgen — The biotech company's anemia drug Aranesp met its primary goal in a late-stage trial aimed at reducing the need for red blood cell transfusions in certain anemia patients.
Walt Disney — Disney's Hong Kong theme park lost $19 million in 2015, posting its first annual loss in four years because of fewer visitors from China.
21st Century Fox — Fox saw its movie "Deadpool" top the weekend box office and set a Presidents Day weekend record with $150 million in North American ticket sales.
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Correction: An earlier version had the wrong start day for Apple Pay in China. It begins on Thursday.