AMD logo displayed on a phone screen and a laptop keyboard are seen in this illustration photo taken in Krakow, Poland on October 30, 2021. (Photo by Jakub Porzycki/NurPhoto via Getty Images)NurPhoto via Getty ImagesAdvanced Micro Devices (AMD) stock has risen by 30.7% within 5 trading days. The stock now appears costly, and the critical question is – what is the risk? Could it plummet? Consider the following information:Size: Advanced Micro Devices is a $343 Billion firm with $30 Billion in revenue, curren ...