AMD is triple topping.

AMD is topping right now. We are currently seeing the descent of the third top. If you own this stock sell it.

I believe a lot of this increase in 2017 was due to their new Ryzen processors which were designed to gain control over Intel's market share. A portion of this growth is genuine because AMD is controlling a larger share of the market than they did before but a good chunk of it also appears to be FOMO.