[Mixed Closing for the Three Major U.S. Stock Indexes, Chip and Semiconductor Equipment Sector Broadly Declines] The three major U.S. stock indexes closed with mixed results: Nasdaq fell 0.71%, S&P 500 dropped 0.16%, and Dow Jones rose 0.11%. The U.S. chip and semiconductor equipment sector broadly retreated on Tuesday, with the Philadelphia Semiconductor Index down more than 3%, briefly dropping nearly 7% during the session.