The S&P 500 and Nasdaq Composite ended the session in negative territory, with the Dow Jones Industrial Average posting a modest gain. The S&P 500 closed at 7,511.35, down 42.94 points (-0.57%), while the Nasdaq Composite finished at 26,376.34, down 307.60 points (-1.15%). The Dow Jones Industrial Average, however, bucked the trend, closing at 51,999.67, up 328.64 points (+0.64%). The mixed performance across the major indices suggests a somewhat cautious tone in the market, with a slight risk-on bias evident in the Dow's gain.

The most significant macro driver today was the US-Iran nuclear deal, which led to a sharp decline in oil prices. This, in turn, fueled a rally in the energy sector and contributed to the overall positive sentiment in the market. The Dow's gain was partly driven by a 350-point jump, which was attributed to the drop in oil prices. Additionally, the market saw a notable theme of sector rotation, with the Nasdaq and S&P 500 drifting ahead of Warsh's first Fed meeting as chair, indicating a focus on the potential impact of monetary policy on the market. The SpaceX stock's market capitalization surpassing that of Amazon was also a notable event, highlighting the growing influence of the tech sector.