**Recent Fed policy tightening and sticky inflation are shaping near-term S&P 500 sentiment ahead of the week of September 28, 2026.** The central bank raised the federal funds target range to 3.75–4.00% at its mid-September meeting, with projections signaling potential for one additional hike amid core PCE inflation near 3.3–3.7% and energy-driven price pressures from geopolitical tensions. Resilient corporate earnings—forecast at roughly 25% growth for 2026—and AI-related capital spending continue to support equity valuations near 7,743, while rising 10-year Treasury yields near 5% and a solid labor market (unemployment around 4.1%) limit downside. Traders will closely watch the upcoming August PCE release, September ISM manufacturing data, and nonfarm payrolls for clues on monetary policy path and growth momentum.