Before Congress, Robinhood CEO Vlad Tenev to reject accusation that app encourages reckless trading

Vlad Tenev, co-CEO of the online broker Robinhood, will defend his company's decision in late January to temporarily restrict trading in so-called meme stocks, including GameStop Inc., and push back against allegations that the app's features encourage investors to buy and sell stocks too frequently or invest in often risky options trading.