美国内存芯片制造商股价早盘下跌，闪迪股价下跌3.8%

Group 1 - The core viewpoint is that U.S. memory chip manufacturers experienced a decline in stock prices on February 9, with SanDisk's stock dropping by 3.8% and Seagate Technology's stock falling by 1.8% [1] Group 2 - SanDisk's stock price decreased by 3.8% [1] - Seagate Technology's stock price decreased by 1.8% [1]