The United States and Iran have signed a Memorandum of Understanding (MoU) remotely, leading to a positive reaction in the stock market. U.S. stocks opened higher following the announcement, with semiconductor-related stocks showing significant gains. Intel (INTC.O) led the charge in the semiconductor sector, rising 8% as investors reacted to the news. The MoU is seen as a potential catalyst for improved relations and economic opportunities, particularly benefiting technology and semiconductor industries.