Lam Research (LRCX) shares have decreased by 5.0% in one day. This recent decline is a result of an analyst downgrade driven by worries about the slowing growth in China and in the NAND memory space. The pullback was compounded by a broader slump in tech shares as traders scaled back expectations for a December interest rate cut.KIEV, UKRAINE - 2018/11/10: In this photo illustration, the Lam Research Corporation logo seen displayed on a smartphone. Lam Research Corporation is an American corporation that en ...