BofA downgrades Sea Limited, says rally will slow as gaming boom loses steam

Singapore-based Sea Limited Chairman and CEO Forrest Li speaks during an interview with CNBC following his company's IPO on the floor of the New York Stock Exchange (NYSE) in New York, U.S., October 20, 2017.
Brendan McDermid | Reuters

It may be time for investors to take some profits in high-flying Sea Limited, according to Bank of America.