$AMD(AMD)$current PE is around 40++. The highest for them is around 200.

AMD has the potential to become a $300 stock as it spent money on innovation and they understand what their clients wants. Capturing the server market and now tesla and console gaming are both using its chips, AMD is good for long term, from current $88 to $200 and beyond is not a dream. 

I understand many will ? me, especially the short sellers. I don't understand why short sell such a good company?

To end off, those still holding on to AMD since $50, 80, 90, hang on, it is clearly on a rising trend. Although it is slow, but quite steady at 1.5 to 2%. We will have our last laugh soon.