Retail sales surged toward the end of summer. Economy still has plenty of momentum.

Retail sales rose sharply in August, marking the largest increase in five months. The gain suggests consumer spending—the primary driver of U.S. economic activity—regained momentum as summer drew to a close, and it adds to evidence that the economy was running faster heading into the fall.

For markets, the significance lies in what resilient consumer demand implies for the broader outlook. Stronger spending can support corporate revenue and earnings, but it may also influence how policymakers assess the need for further tightening. That tension between growth and policy is often what moves rates, the dollar, and equity valuations.

What to watch: whether the August strength persists into autumn, how it squares with other data such as employment and inflation, and whether revisions alter the picture. A single month rarely defines a trend, but it can shift expectations.