ACM Research's 15min chart shows RSI Overbought, KDJ Death Cross.

According to the 15-minute chart of ACM Research, the RSI indicator has reached an overbought level, and the KDJ indicator has recently crossed below its signal line, signifying a shift in momentum from positive to negative. This suggests that the rapid increase in the stock price has surpassed its underlying fundamental support, and it is likely to decline further.