Roku beats second-quarter revenue estimates
July 31 (Reuters) - Roku ROKU.O topped Wall Street estimates for second-quarter revenue on Thursday, helped by its expanding user base and advertising sales. The company reported revenue of $1.11 billion for the quarter, compared to the analysts' average estimate of $1.07 billion, according to data compiled by LSEG. (Reporting by Juby Babu in Mexico City; Editing by Alan Barona) ((Juby.Babu@thomsonreuters.com))