 A holiday-shortened trading session with the major averages closing mixed in the Nasdaq and S&P 500, posting new record closes. The Dow down 24 points, the Nasdaq up 160, S&P 500 up 28. On the economic front, the ADP private payroll employment report and weekly jobless claims data pointed to easing labor market conditions. This comes ahead of Friday's closely watched non-farm payrolls report for June.