[Chip stocks weaken at U.S. market open, SK Hynix down 3.2%] BlockBeats News, on October 12, at the U.S. market open, the Dow Jones Industrial Average rose 0.18%, the S&P 500 Index rose 0.05%, and the Nasdaq Composite Index fell 0.04%. Chip stocks weakened, with SK Hynix (SKHY.O) down 3.2%, Micron Technology (MU.O) down 3.16%, SanDisk (SNDK.O) down 3.28%, and Western Digital (WDC.O) down over 2%.