AppLovin falls after report of SEC probe over data-collection practices

** Shares of mobile advertising tech company AppLovin APP fall 15% to $580 in aftermarket trading

** The US securities regulator has been probing the data-collection practices of APP, Bloomberg News reports

** The Securities and Exchange Commission is looking into allegations of APP violating platform partners' service agreements to push more targeted advertising to consumers, the report said, citing sources familiar with the matter

** As of Monday's close, stock had risen 76.2% YTD