Why Roku Stock Plunged 28% in February

Shares of video streaming company Roku (ROKU -0.36%) dropped 28% in February according to data provided by S&P Global Market Intelligence. Although it reported solid fourth-quarter and full-year results, it was negatively impacted by the news that Walmart is acquiring one of its competitors.Making progress where it countsRoku's fourth-quarter results were pretty strong. Revenue increased a solid 11% year over year, and both of its segments, platform and device, demonstrated growth.There was good progress on ...