On March 30th, U.S. stocks opened higher across the board, with the three major indices all opening up simultaneously. The Dow Jones Industrial Average rose 0.78%, the S&P 500 increased 0.77%, and the Nasdaq Composite gained 0.7%. In individual stocks, Alcoa (AA.N) surged 7.9% at the open, mainly due to geopolitical events. Recently, two large aluminum plants in Bahrain and the UAE were attacked by Iran, triggering expectations of tightening global aluminum supply.