Check out which companies are making headlines before the bell:
Alcoa - The aluminum producer began the quarterly earnings season by reporting profits that beat expectations.
Intuitive Surgical - The manufacturer of surgical robots lowered quarterly revenue guidance to well below analysts' estimates.
General Motors - The National Highway Traffic Safety Administration said the auto manufacturer was being fined $7,000 daily for not providing information on its recall of 2.6 million cars for faulty ignition switches by an April 3 deadline. Morgan Stanley downgraded its shares to underweight.
Toyota Motor - The car manufacturer said it would recall 6.39 million vehicles around the globe due to faulty parts including steering wheels.
Goldman Sachs - The Wall Street Journal reported the company was mulling closing its Sigma X dark pool trading operation, one of the world's biggest private stock-trading venues.
LinkedIn - Topeka Capital Markets upgraded shares of the professional networking site to "buy" from "hold," while maintaining its $230 price target.
Hershey - Goldman Sachs downgraded the chocolate company to "sell," and lowered its 12-month price target to $90 from $105 a share.
Constellation Brands - The wine and spirits maker projected adjusted earnings of $3.95 to $4.15 a share in the new year, versus estimates of $3.95 a share.
—By CNBC's Kate Gibson
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