US stocks and Treasuries rallied on September 17, 2026, as oil prices retreated, raising hopes for inflation control after the Federal Reserve's rate hike. Futures for the S&P 500 rose 0.7%, while Nasdaq 100 futures climbed 0.8%. Brent crude fell 1% to below $105 a barrel, and the 10-year Treasury yield dropped four basis points to 4.99%. The dollar remained largely unchanged, and gold headed for its first gain of the week. This market movement came after the Fed raised interest rates for the first time since 2023 and indicated more tightening to come.

Following the Fed's decision, which included a "dot plot" suggesting one more rate hike this year, markets are now assessing the future. Money markets are pricing in a total of three hikes over the next 12 months. However, Joachim Klement, a strategist at Panmure Liberum, suggested that "current market expectations for additional rate hikes in 2027 are probably overdone," anticipating that bond yields might fall, which would support stock markets. The pullback in crude oil was partly due to signs of easing supply disruptions in the Middle East, with President Donald Trump scheduled to meet with Persian Gulf leaders to discuss the conflict.

In Europe, the Stoxx 600 rose 0.3%, with economically sensitive shares outperforming. The Bank of England is expected to maintain its benchmark rate, with a hike anticipated in November. In Asia, the yen weakened significantly after the Fed's hawkish stance, reaching 156.42 per dollar overnight before paring some losses. Traders are closely watching the Bank of Japan's policy meeting, as a 25-basis-point increase is almost fully priced by overnight index swaps.

Other market movements included Bitcoin rising 0.3% to $76,347.95 and Ether increasing 1.2% to $2,437.55. Germany's 10-year yield advanced one basis point to 3.52%, and Britain's 10-year yield also advanced one basis point to 5.31%. Spot gold saw a significant rise of 1.3% to $4,320.74 an ounce. These shifts highlight a global market reaction to the Federal Reserve's actions and evolving inflation expectations.