Reports: Factory orders and inventories for June, non-manufacturing ISM for July, Markit PMI-Services for July, ICSC-Goldman Sachs and Redbook retail chain sales for period ending Aug. 2

Local earnings: Akorn Inc., Archer Daniels Midland Co., Great Lakes Dredge & Dock Corp., Groupon Inc., Motorola Solutions Inc., Potbelly Corp., Zebra Technologies

Other earnings: Ameren Corp., CVS Caremark, Emerson Electric, Office Depot Inc., Walt Disney Co. and many others

Of note: Walgreen Co. July sales, Tribune Publications begins trading,