https://www.reuters.com/article/us-robinhood-regulations-finra/u-s-regulators-probe-robinhood-over-trading-curbs-idUSKBN2AQ2SJ >Retail brokerage Robinhood said on Friday U.S. regulators were looking into its temporary trading curbs on so-called meme stocks earlier this year as shares of companies like GameStop Corp soared during a social media-fueled short-squeeze.