The Financial Post reports in its Thursday, Nov. 28, edition that the recent artificial intelligence revolution has significantly benefited investors, lifting a small group of stocks, like Nvidia and Microsoft, to multitrillion-dollar valuations. A Financial Times dispatch to the Post reports that this concentration, however, raises concerns reminiscent of the dot-com bust. The European Central Bank recently warned about the possibility of an AI-related asset price bubble in its financial stability review, highlighting the gravity of the situation. The ECB noted that a disappointment in earnings expectations for major U.S. companies could lead to "adverse global spillovers." The so-called Magnificent Seven stocks, mainly chip designers and hyperscalers, represent about a third of the S&P 500 index's value. These stocks have doubled in value over the past two years, while the index has increased by about 50 per cent. Investors are aware of the overcrowding in tech stocks, a top concern for fund managers for nearly two years. Despite this, many still believe that balance will eventually return, whether through a halt in the rally of big stocks or through the anticipated benefits of AI lifting the overall market.