CONCLUDED Last Updated: 4 hours ago S&P 500 Heads Lower as Rally Reverses After Fed Decision By Connor Smith The stock market's Fed decision rally is already reversing. The S&P 500 was down 0.3% after spiking in the wake of the central bank's decision to lower interest rates by a quarter point. The Nasdaq Composite was down 0.9%. The Dow was up 277 points, or 0.6%, and falling. The move was widely expected by markets, and stocks had already hit fresh highs based on expectations of the cut. Now, traders are ...