Check out which companies are making headlines before the bell:
Groupon plunged nearly 6 percent in pre-market trade despite posting a 3.1 percent increase in quarterly revenue. Strong demand for the website's daily deals boosted revenue to $738.4 million in the second quarter ended June 30 from $716.2 million a year earlier. Net income rose 16 cents per share versus a loss of 3 cents per share in the year-ago period.
JD.com, China's second-largest e-commerce site by sales, posted a 61 percent year-on-year rise in quarterly revenue but expected that pace to slow in the third quarter. A jump in the number of shoppers and goods bought through the site helped revenue beat expectations. The stock rose nearly 3 percent in pre-market trade.
Cheniere Energy leaped 6 percent in pre-market trade after activist investor Carl Icahn reported an 8.2 percent stake in the firm and said he might seek a seat on the liquefied natural gas company's board.
Capital One is in talks for a $10-billion-plus General Electric's health care finance arm, which offers mortgages and business loans to health care providers.
Cablevision reported a 1.6 percent increase in quarterly revenue, boosted by an increase in fees to its cable customers. Net income attributable to stockholders fell to 27 cents from 35 cents a year earlier, while net revenue rose to $1.65 billion from $1.63 billion.
Hershey reported its weakest sales performance in more than five years, hurt by low demand in China. The chocolate maker posted a net loss of 47 cents a share for the second quarter, versus a gain of 75 cents from the same period last year. Net sales were flat at $1.58 billion.
Sprouts Farmers Market plunged more than 10 percent in pre-market trade after the grocery store chain gave a soft profit forecast and promoted its chief financial officer to chief executive. The firm reported earnings and revenue roughly in-line with estimates.
Lions Gate soundly beat expectations with a profit of 26 per share versus a 7 cent forecast, but missed on revenue, posting $409 million versus estimates of $428 million.
Best Buy began sale of the Apple Watch online and in stores.
—Reuters contributed to this report.