WASHINGTON, July 27 (Reuters) - Robinhood Markets Inc has received an investigative request from Wall Street's industry regulator for documents and information related to registration status of personnel, including the online broker's co-founders, Robinhood said on Tuesday.

The Financial Industry Regulatory Authority (FINRA) sent an investigative request on July 26 for documents and information related to Robinhood's compliance with registration requirements for co-founder and Chief Executive Officer Vladimir Tenev and co-founder Baiju Bhatt, Robinhood said in a filing. (Reporting by Chris Prentice; Editing by Leslie Adler)