KlAC wll move to the sub-10's if the rest of the market participants that have a P/E of 24 do also.
This is the one thing that separates KLAC from so many of the others. It actually has earnings, and the earnings result in a P/E that is beginning to fall in line with reality.
The price of KLAC could fall by 50% and with no change in earnings the P/E is still 12... not cheap by historical measures.
Take a look at EXPE for another great short. These days, if you want an idea of a stock's realistic downside potential.... check out the P/E.
I know it is a fundie and we techies avoid fundies, but this one is 50% tech.
The P/E is the reason there are many who think DOW 5000 is in the future. And Nas 800. At some point, real earnings play a significant part in the picture.
When the euphoria goes and the speculative bubble bursts, all you have left is earnings. Hence the decline of the markets.