US stock markets opened the final week of 2025 lower, with the Dow Jones Industrial Average, S&P 500, and Nasdaq Composite all declining. This dip follows a strong rally that pushed the S&P 500 near 7,000 points and the Dow to record highs. Technology stocks, which led recent gains, experienced a pullback, with Nvidia and Tesla seeing notable drops. Energy stocks showed gains, while materials sectors declined. Investors are watching for a potential 'Santa Claus rally' despite concerns over high tech valuations.