Amazon's (AMZN) massive growth spurt during the pandemic was followed by a sharp slump, with shares falling 49% last year. But the tech giant has turned it around in 2023, with Amazon stock up 83% as of market open Dec. 26.X The percent gain puts Amazon stock on pace for its best year since 2015. With a market cap nearing $1.6 trillion, Amazon is looking to build off gains this year by establishing leadership in generative artificial intelligence and improving the profitability of its massive online retail ...