[US memory chip stocks fell across the board in pre-market trading; SK Hynix and Micron Technology dropped nearly 4%] According to Jinse Finance, on November 12, US memory chip stocks generally declined in pre-market trading. SK Hynix ADR fell 3.81%, Micron Technology fell 3.79%, SanDisk fell 4.19%, Western Digital fell 3.43%, and Seagate Technology fell 2.78%.