The Dow Jones Industrial Average opened at 48,440.55 points on December 30, marking a decline of 21.38 points, or 0.04%. The Nasdaq Composite also saw a slight decrease, opening at 23,468.9 points, down 5.45 points, or 0.02%. Meanwhile, the S&P 500 opened at 6,905.41 points, experiencing a marginal drop of 0.33 points. These movements are being closely monitored by the crypto market, which often tracks broader financial trends.