The Vanguard S&P 500 ETF (VOO) closed at $553.35 on February 4, 2025, marking a 0.66% increase as investor optimism regarding US-China trade talks and a decline in Treasury yields fueled a rally in the stock market. The S&P 500 Index rose by 0.72% to 6,037.88, driven by hopes that trade negotiations could yield positive outcomes similar to those with Canada and Mexico. The decline in 10-year Treasury yields, down 4 basis points to 4.51%, suggests reduced concerns over economic overheating, potentially lowering borrowing costs for businesses. Additionally, a weakening US dollar, with a 0.7% drop in the Bloomberg Dollar Spot Index, could enhance the competitiveness of US exports. The market's positive momentum was further supported by a rebound in crude oil prices amid geopolitical tensions, as the US prepares to reinforce sanctions on Iran.