Why Is ROKU Stock Down Today?

Roku (NASDAQ:ROKU) stock is falling on Tuesday as investors in the TV streaming platform company react to news of Walmart (NYSE:WMT) buying smart TV maker Vizio (NYSE:VZIO)Walmart is going to acquire Vizio for $2.3 billion in cash to fuel its planned expansion into the smart TV advertising space. That will have it directly competing against Roku and has the company’s shareholders worried.Walmart is a much larger business than Roku. The acquisition also gives it access to smart TVs made by Vizio. This increa ...