Nokia stock was up significantly this morning, which may come as a surprise because the Finnish cellphone company has been struggling to keep up with the likes of Apple and Samsung. But the optimism on Wall Street has to do with a different part of the smartphone tech market — the business end. Nokia just bought out electronics giant Siemens in a joint venture to make high-speed wireless network technology.

Todd Wasserman, business editor at Mashable, joins Marketplace Tech host Ben Johnson to discuss the deal.