https://www.reuters.com/article/us-retail-trading-lawsuits/customers-sue-robinhood-financial-over-stock-trade-suspensions-idUSKBN29X2QZ >Two customers sued Robinhood Financial on Thursday over the online brokerage's trading ban in GameStop and other high-flying stocks caught up in a retail buying frenzy that forced some prominent hedge funds to cover large short positions.