Nvidia's near-term outlook is becoming more uncertain, but it is still a dominant company.With shares down roughly 15% since the company's second-quarter earnings report on Aug. 8, Nvidia's (NVDA 1.53%) legendary bull run might be in trouble. While operational results remain as strong as ever, investors may be growing concerned about the sustainability of Nvidia's business model and the artificial intelligence (AI) industry as a whole. Let's discuss two reasons to consider selling the stock and one reason t ...