US stocks today: S&P 500 edges down with Iran and earnings season in focus

US stocks ended mixed to lower as the S&P 500 fell 0.18 percent to 7,444.19, Nasdaq dipped 0.04 percent, and the Dow declined 0.57 percent to 51,848.96. The Q2 earnings season is gathering pace with results due from Alphabet, Tesla and Intel, while S&P 500 profit growth is projected at 26 percent year-on-year according to LSEG data. Geopolitical tensions around Iran and Yemen raised energy supply risks, though a proposed 10-day ceasefire offered some relief to markets.