Trader Brian Jones on Twitter: "You have to leave something on the table for the traders who get in late. If you pop up 30 on the S&P at the open. There is nothing left. That's when traders bring the market back down again." / Twitter

You have to leave something on the table for the traders who get in late. If you pop up 30 on the S&P at the open. There is nothing left. That's when traders bring the market back down again.