US economic data is heavy. Initial and continuing claims, retail sales, and import/export data will be released at 8:30 a.m. ET, while business inventories is set to cross the wires at 10 a.m. ET. Natural-gas inventories are due out at 10:30 a.m. ET. The US Treasury will reopen $13 billion 30-year bonds at 1 p.m. ET.