[U.S. Stock Market Opens, Major Indexes Rise] According to Golden Finance, U.S. stock markets opened with major indexes rising. The Dow Jones Industrial Average increased by 0.18%, the S&P 500 Index rose by 0.07%, and the Nasdaq Composite Index gained 0.17%. Micron Technology (MU.O) surged 6.6% as UBS significantly raised its target price to $1,625.