Stocks Tumble On Rate Hike Bets; SpaceX Falls As Robinhood Jumps

Dow Jones futures rose modestly after hours, along with S&P 500 futures and Nasdaq futures. The stock market retreated broadly Wednesday after several Federal Reserve policymakers favored a rate hike this year. New Fed chief Kevin Warsh signaled a shake-up in Fed policy and analysis. Treasury yields rose, notably the two-year yield. SpaceX (SPCX) fell for the first time since…