Key Points Roku is winning market share as ad dollars follow eyeballs. The company's profit margins should continue to expand. 10 stocks we like better than Roku › Shares of Roku (NASDAQ: ROKU) popped on Friday after the streaming pioneer's third-quarter profits exceeded investors' expectations. As of 1:35 p.m. ET, Roku's stock price was up more than 6% after rising by over 16% earlier in the day. Image source: Getty Images. Market share gains are fueling Roku's growth Roku's revenue climbed 14 ...