Top 20 US Stock Exchanges: Apple's stock price once again reached a new high, reaching the top spot in the US stock market. Apple closed up 2.86%, reaching a new historical high with a transaction volume of $41.864 billion and a market value of $3267.2 billion. On Wednesday during the US stock market session, Apple's stock price briefly surpassed Microsoft, becoming the largest company in the US stock market value, and its market value fell to the second position in the late trading session.