[U.S. Stock Market Opens with Nasdaq Up 1.2%, Mixed Performance in Memory Chip Stocks] BlockBeats News, October 2, according to BIT (Bit.com) market data, U.S. stock markets opened with the Dow Jones Industrial Average up 0.62%, the S&P 500 Index up 0.9%, and the Nasdaq Composite Index up 1.2%. Memory chip stocks showed mixed performance: Seagate Technology (STX.O) fell 14%, Western Digital (WDC.O) dropped 9.8%, and Rambus (RMBS.O) rose 3%. Tesla (TSLA.O) gained 2.3%, as its third-quarter delivery numbers exceeded expectations.