S&P 500 futures moved lower Monday night as traders watched rising geopolitical tensions amid the conflict between the U.S. and Iran. S&P 500 futures slipped nearly 0.2%, while Nasdaq 100 futures were off 0.2%. Futures tied to the Dow Jones Industrial Average lost 62 points, or about 0.1%. The S&P 500 and Nasdaq Composite closed the previous session in the green, marking a sharp reversal from their lows earlier in the session. The broad-market index closed just above the flatline, while the