Walmart jumps after it partners with a Japanese e-commerce giant to take on Amazon (WMT, AMZN)

Facebook/Kobo Walmart's stock was up in pre-market trading after announcing an alliance with Japanese e-commerce giant Rakuten. Walmart said it will sell Rakuten's Kobo e-readers and content in the US, as well as jointly launch a grocery delivery service in Japan. The move is the latest step that Walmart is taking to compete withAmazon. Watch Walmart's stock move in real time here. Shares of Walmart rose in pre-market trading on Friday after the company announced a deal with Japanese e-commerce ...