September Inflation Jumps to 3.7%, Repricing the Federal Reserve’s Next Move

Consumer prices rose 0.6% in September as energy costs surged, sending stocks lower and increasing market expectations for another interest-rate increase.

By Marcus Elrod

Oct 18, 2026 · 5 min read

U.S. consumer inflation accelerated in September, sending stocks lower and Treasury yields higher as investors reassessed whether the Federal Reserve may need to raise interest rates again sooner than previously expected.

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Marcus Elrod

Marcus tracks positioning, flows and rates. He writes CI's weekly market internals column.

Marcus Elrod writes for Corporate Insider Inc.

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