[Nasdaq slightly closed lower, Micron Technology rose over 7%] The three major U.S. stock indexes collectively closed lower, with the Nasdaq down 0.06%, the Dow down 0.17%, and the S&P 500 down 0.06%. Chip stocks broadly rose, with the Philadelphia Semiconductor Index up 1.15%, Micron Technology rising over 7%, and Broadcom, Applied Materials, and ASML rising over 2%.