Key TakeawaysAdvance Micro Devices shares moved sharply higher in premarket trading Wednesday after the chipmaker posted better-than-expected second quarter revenue and issued an upbeat sales outlook for the second half of the year.Trading volumes have remained below average throughout the stock's recent sell-off, while the relative strength index indicator nears oversold levels, setting the stock up for a post-earnings bounce.AMD shares may encounter overhead resistance at key chart levels including $151, ...