I picked XLNX as an example but there are literally hundreds of other similarly egregiously valued stocks in this bizarre, hideously manipulated false market. Going back 30 years the last two times XLNX stock was this over bought >80 on RSI (blue boxes in bottom pane) we had either small negative performance (-10 to -20%) over following 2-3 years or huge negative performance (2000-2003). Whilst these sorts of stocks could still appreciate over the next couple of months, if you don't think that this is a bubble waiting to burst (again) then you are sadly deluding yourself.