Why is Dow Jones down while S&P 500 and Nasdaq up today, and will US stock market continue to witness mixed trends? This question has gained attention after Wall Street opened with mixed trading on the last session of the first half of 2026. The Dow Jones Industrial Average moved lower, while the S&P 500 and Nasdaq Composite posted gains. Investors continued to balance optimism around artificial intelligence with concerns over oil prices, inflation, and geopolitical developments involving the United States and Iran. Market participants are also waiting for the June US jobs report, which could influence expectations for future interest rate decisions and broader market direction.