Wednesday, Oct. 28, 2026 could bring some big swings for the stock market. That's because the Federal Reserve's Open Market Committee (FOMC) announces whether interest rates will move higher, lower, or be held steady. Rate announcements tend to spark a burst of trading activity across the market regardless of the circumstances, but with bond yields on the rise and a significant portion of the S&P 500 (SNPINDEX:^GSPC) concentrated in artificial intelligence (AI) -- an industry that is now, more than ever, leaning on debt markets, the Fed's decision carries even more weight than usual. Here's what investors should be watching.
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