The airline will buy almost half of Virgin Atlantic for $360 million to boost its presence in the New York-to-London market.

Dollar General Corp., down $3.63 at $42.94

The discount retailer said its fiscal third-quarter net income rose 21 percent, but it was cautious about the rest of the year.

SunCoke Energy Inc., down 86 cents at $15.03

The coal producer said that it expects lower coal prices to result in a year-over-year drop in a key profit figure next year.

Nasdaq

WebMD Health Corp., up $1.60 at $15.45

In a push to reduce costs, the health website operator said it plans to cut 250 jobs, or about 14 percent of its workforce.

TripAdvisor Inc., up $2.52 at $40.91

Barry Diller is stepping down as chairman of the travel website and selling his stake to Liberty Interactive for about $300 million.

Urban Outfitters Inc., up $1.65 at $38.65

The retailer, which owns Anthropologie, Free People and its namesake stores, said that sales are doing well in its current quarter.

KIT Digital Inc., down 6 cents at 63 cents

The video technology company said it received a notice from Nasdaq warning that its stock could be delisted from the stock exchange.

Almost Family Inc., up $1.48 at $21.78

The home nursing care provider said it will pay a special dividend of $2 per share in December to the company’s shareholders.