The US stock market reached a new record high on Wednesday as easing tensions between the US and Iran led to a decline in oil prices, while AMD's strong AI chip earnings fueled a semiconductor rally. The S&P 500 rose 1.14%, the Nasdaq Composite gained 1.51%, and the Dow Jones Industrial Average increased by 1.10%. According to BeInCrypto, the White House is close to a memorandum of understanding with Iran to halt fighting and initiate nuclear talks, which has pressured oil prices downward. Additionally, AMD's earnings beat expectations, boosting semiconductor stocks and contributing to the market's upward momentum.