Roku, Inc. (ROKU) shares tumble lower in Thursday's after-hours trading as its average revenue per user dropped by 4% year-over-year in the fourth quarter. The TV and streaming company managed to beat revenue estimates and reach 80 million active user accounts in the last quarter. Yahoo Finance Entertainment Reporter Alexandra Canal breaks down the earnings report and key figures moving the stock. For more expert insight and the latest market action, click here to watch this full episode of Yahoo Finance Live. Editor's note: This article was written by Luke Carberry Mogan.
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