Group 1 - The upcoming GDP growth rate update for the last quarter is expected to be a significant economic data release that may impact market sentiment [1] - Investors should monitor updates from several companies including Accenture, AutoZone, BlackBerry, CarMax, Cintas, Costco Wholesale, KB Home, Micron Technology, and Stitch Fix as earnings season has concluded [1] Group 2 - Key market events for the week include the Chicago Fed National Activity Index and a speech from St. Louis Fed President Alberto Musalem on Monday, September 22 [2] - On Tuesday, September 23, August existing home sales and S&P flash updates on U.S. services, manufacturing, and purchasing managers' index (PMI) will be released [2] - Wednesday, September 24, will feature housing data such as August new home sales, MBA mortgage applications, and building permits, along with remarks from San Francisco Fed President Mary Daly [3] - Thursday, September 25, is anticipated to be the busiest day with a GDP update, initial jobless claims, and key August reports on U.S. trade balance in goods, retail and wholesale inventories, and durable goods orders [3] - The week will conclude on Friday, September 26, with reports on August personal income and spending, core and standard personal consumption expenditures (PCE) data, the University of Michigan's Consumer Sentiment Index, and an address from Richmond Fed President Tom Barkin [4]