US stocks pare gains at session's end; Dow closes up 41 -
US markets (close): DJIA 19,883.95 (+40.54/+0.20%), S&P 500 2,262.58 (+4.51/+0.20%), NASDAQ 5,457.44 (+20.28/+0.37%), NYSE 11,122.05 (-3.17/-0.03%)