STOCKS TANK AFTER WILD DAY: Here's What You Need To Know Stocks finished lower, but way off their worst levels, after a wild session that saw stocks open sharply lower as bond yields fell around the world, oil prices remained at multi-year lows, and several US economic data points came in below expectations. At their lows, stocks were down more than 2% across the board, with the Dow falling as much as 435 points and the S&P 500 losing all of its year-to-date gains.