Retail sales measure the total receipts of retail and food service establishments — essentially, how much consumers are spending on goods and dining in any given month. Consumer spending represents roughly two-thirds of US GDP, which makes this one of the most important monthly data releases for assessing economic trajectory. The headline number covers all retail formats; the control group — which excludes food services, auto dealers, building materials and gasoline — is a better measure of underlying consumer spending momentum and is used as an input to GDP calculations. Strong retail sales confirm that employment and wage growth are translating into actual spending activity; weak retail sales despite solid employment is an early warning that consumers are either saving more or facing affordability pressure from inflation. E-commerce has grown to represent a significant share of retail activity and is captured in non-store retailers within the report. For investors, retail sales data is the primary real-time monitor of consumer sector health, directly relevant to retailers, consumer goods companies and any business whose revenues depend on household spending. Month-to-month volatility from weather and seasonal adjustment issues means it is better analyzed as a three-month trend than a single reading.