Marvell Technology (MRVL 2.24%) is performing marvelously for shareholders. Buoyed by investor enthusiasm over artificial intelligence (AI) stocks, and in particular hopes to duplicate Nvidia's (NVDA 3.60%) performance as a chipmaker for the AI industry, shares of semiconductor stock Marvell soared 80% over the last 12 months, outperforming the broader S&P 500 by nearly 54 percentage points.But can such outperformance last?Investment bank B. Riley Financial made the case on Monday that it can last. Analysts ...