Investors are facing a pivotal week as a key measure of inflation that hits Tuesday and the Federal Reserve’s interest-rate decision on Wednesday are expected to set the tone for the stock market and economy heading into 2024.

Investors have shown few signs of panic during a stock market slump that’s pushed the S&P 500 Index into its first losing quarter in a year. But beneath the surface, signs of stress are emerging that go far beyond the just averted US government shutdown.