U.S. stock markets began 2025 with declines across major indexes, marking the S&P 500's fifth consecutive negative session. Factors influencing this trend included rising Treasury yields near 4.6%, a drop in Tesla shares following lower-than-expected delivery figures, and uncertainties regarding future Federal Reserve interest rate decisions. Energy sector stocks rose slightly due to higher oil prices, while consumer discretionary and technology stocks, particularly Tesla and Apple, faced significant losses. Overall, investors grappled with mixed economic signals and political changes expected in Washington.