U.S. stock indexes close mixed; Nasdaq up 0.31%, S&P 500 flat, Dow down 0.24%. Nvidia rises over 4%, hitting new highs and becoming the world's most valuable company again.

U.S. stock indexes close mixed; Nasdaq up 0.31%, S&P 500 flat, Dow down 0.24%. Nvidia rises over 4%, hitting new highs and becoming the world's most valuable company again.

U.S. stock indexes closed mixed on Wednesday, June 18, 2025, with the Nasdaq Composite climbing 0.31%, the S&P 500 remaining nearly flat, and the Dow Jones Industrial Average falling by 0.24%. President Trump's statement on the Israel-Iran conflict and Fed Chair Jerome Powell's testimony before the Senate Banking Committee contributed to the market's volatility [1].

The Nasdaq Composite, boosted by a 4% rise in Nvidia (NVDA) shares, reached a new record high, while the S&P 500 flirted with its own record highs but ended the day nearly flat. The Dow Jones slipped about 0.3%, falling just over 100 points. Powell's remarks on the potential impact of Trump's tariffs and the uncertainty surrounding the Israel-Iran conflict kept investors on edge [1].

Nvidia shares surged more than 4% on Wednesday, reaching a new record high of $154 and briefly overtaking Microsoft (MSFT) as the world's most valuable company. The AI chipmaker's stock has seen significant gains since its first quarter earnings report, which featured revenue that exceeded Wall Street expectations [3]. Nvidia's stock has jumped over 14% since May 28, far outpacing the S&P 500's gain of approximately 3.4% in the same period [3].

The tech-heavy Nasdaq Composite ended the day at 19,546.27, up by 25.18 points or 0.13%, while the S&P 500 closed at 5,980.87, down by 1.85 points or 0.031%. The Dow Jones Industrial Average closed at 42,171.66, down by 44.14 points or 0.10% [2].

Investors are closely watching the upcoming Fed's PCE report, scheduled for Friday, which will provide insights into the inflationary effects of Trump's tariffs and the broader economic outlook. The market will also be influenced by the ongoing Israel-Iran conflict and the potential impact on oil prices [1].

The U.S. market will be closed on June 19 due to Juneteenth National Independence Day. Meanwhile, Accenture's earnings, scheduled for Friday, will be closely watched by investors [2].

References:
[1] https://finance.yahoo.com/news/live/stock-market-today-dow-sp-500-nasdaq-rally-stalls-with-fresh-records-in-sight-225441558.html
[2] https://www.goodreturns.in/news/us-market-reaction-to-fed-policy-nasdaq-in-green-but-why-dow-jones-s-p-500-ended-in-red-1436893.html
[3] https://finance.yahoo.com/news/nvidia-stock-looks-to-extend-gains-notch-record-high-in-remarkable-2025-turnaround-183528616.html