Fed Rate Hike Looms as Inflation Concerns Mount

Investors are bracing for a possible interest rate hike at the upcoming Federal Reserve meeting, which could threaten a US stock market rally already vulnerable to rising bond yields. The central bank has historically used rate increases to combat inflation, and after new Fed Chair Kevin Warsh's hawkish speech last month, bets have grown that rates will rise on Wednesday.

The core measure of the Consumer Price Index rose by 0.3 percent in August, hotter than expected, and data showed consumer inflation picked up in the same period. This has led to increased odds of a quarter-percentage point rate hike, with Fed funds futures suggesting an over 80 percent chance.

Higher interest rates could raise borrowing costs for consumers and companies, and create more investment competition from bonds that pressure equity valuations. The benchmark S&P 500 is up nearly 12 percent so far in 2026, but has pulled back recently and was about 2 percent below its mid-August all-time high.

Investors are also grappling with spiking tensions between the US and Iran, which pushed oil prices over $100 a barrel. Some investors remain dubious that the central bank will take this step, citing concerns about Fed independence and potential market volatility.