People wait in line for T-shirts at a pop-up kiosk for the online brokerage Robinhood along Wall Street after the company went public with an initial public offering earlier in the day on July 29, 2021 in New York City.Shares of Robinhood dropped nearly 5% in premarket trading. The stock has rallied 3.3% Friday to bring last week's gain to over 13% before the S&P Dow Jones Indices said after the bell that the S&P 500 would remain unchanged.Robinhood shares sold off on Monday as the online brokerage was snub ...