I think the "bubbling" is not neccessarily the amount of price increase but what can be seen in the bid depth and the lack of capitulation moves and tested support levels. It is just nonstop buying (hence 'overbought') and way up in the bollinger band. Just think with a $60 movement, $700M market cap has been added. Has $700M been invested?
This point can't be overstated. I think that we're due for a correction downward, at least to test these new gains. There will be a buy opp in the $130-$150 range. But blink and you'll miss it.