Fed Chair Jerome Powell expressed caution about lower rates Wednesday, after two fellow Fed governors took a rate-cutting stance earlier in the week.gettyStock prices fell Thursday after the interest rate outlook turned cloudy. Fed Chair Jerome Powell expressed caution about lower rates Wednesday, after two fellow Fed governors took a rate-cutting stance earlier in the week. The large-cap S&P 500 index fell 0.3% and the technology-focused Nasdaq Composite also dipped 0.3%. The Dow Jones Industrial Average, ...