In the weekly bar chart of LRCX, below, we can see that prices have come within in a fraction of the early 2018 zenith. LRCX is above the rising 40-week moving average line but the OBV line has not matched the price action.
The weekly MACD oscillator gave a buy signal on this longer time frame.
Bottom-line strategy: It looks like there is more upside on LRCX. A decline below $210 could mark a reversal.