Fed Rate Hikes: How Markets React to Every FOMC Decision

The Federal Reserve's interest rate decisions have a profound impact on financial markets. On August 12, 2026, the release of the July Consumer Price Index (CPI) report sparked an immediate market reaction. The report showed headline inflation at 3.4% year-over-year and core inflation at 2.5%, both in line with expectations.

The market had previously priced in a roughly 50% probability of a Fed rate hike at the September meeting, but after the CPI release, this probability adjusted to around 45%. The S&P 500 rose 0.5%, and the Nasdaq gained 0.9%. Treasury yields fell, with the two-year yield dropping 4.2 basis points to 4.176%.

The Federal Reserve's dual mandate is to maintain price stability while pursuing maximum employment. Its core policy tool is the federal funds rate, which influences virtually every other interest rate in the economy. When the Fed adjusts the federal funds rate, it can have a ripple effect across stocks, bonds, currencies, and real estate.

The current federal funds rate target range is 3.50% to 3.75%. A rate hike would bring rates to 3.75% to 4.00%, which could cool the economy and ease inflationary pressures. However, growth stocks and technology companies are particularly sensitive to rate hikes, as a rising discount rate can reduce their present value.