Stocks declined on Wednesday and in the process gave up nearly all of the gains they logged in the prior session’s rally. By the closing bell, the Dow Jones Industrial Average (DJINDICES: ^DJI) had shed 216 points, or 1.2%, and the S&P 500 (SNPINDEX: ^GSPC) lost 20 points, or 1%. Both indexes ended the day at session lows: