Major U.S. stock indexes experienced significant declines as investors prepared for an anticipated interest rate hike from the Federal Reserve. The Dow dropped substantially, closing down 450 points, while the S&P 500 and Nasdaq also fell, with the latter hitting a near 19-year high in Treasury yields. Rising oil prices have further intensified the market pressure, contributing to widespread investor unease. As stock futures drifted higher, many analysts expressed caution, signaling that the market could be overdue for a dip amidst the backdrop of soaring bond yields and oil prices. The current situation has led to an atmosphere of apprehension, with investors closely monitoring developments leading up to the Fed decision.