US indices closed higher Monday with the S&P 500 gaining 0.34% to 6,687 points as traders positioned for strong Q3 technology results. The Nasdaq Composite rose 0.28%, while Dow Jones added 0.25%. Optimism around megacap earnings and steady consumer spending supported sentiment, extending the index’s 14.23% year-on-year gain. Analysts expect Microsoft and Nvidia to anchor momentum through the reporting season as bond yields stabilize and Fed rate-cut bets grow.