AMD Price Levels to Watch as Stock Tumbles After AI Chip Unveiling

Key TakeawaysShares of Advanced Micro Devices tumbled Thursday as the chipmaker's new AI lineup failed to excite investors who are eager to see the company take on Nvidia.The stock has run into selling pressure near the upper trendline of a descending channel, with Thursday’s drop occurring on the heaviest trading volume since the early-August selloff, pointing to conviction behind the move lower.Investors should watch key lower levels on AMD's chart around $162, $142, and $122, while also monitoring an ups ...