Stocks kicked off another shortened week of trading Monday with modest losses. The Nasdaq and S&P 500 gapped down at the open but recovered early losses. The S&P 500 lost 0.2%, while the Nasdaq and the Dow Jones industrial average eased 0.1% each. Small caps lagged again with the Russell 2000 down 0.6%. The IBD 50 was a bright spot, up 0.3%.