Financial experts are raising concerns about a potential repeat of the dotcom bubble as the AI boom continues to drive stock market valuations. In March 2000, global stock markets reached record highs before experiencing a significant collapse over the following three years. Twenty-five years later, lessons from that period remain relevant, particularly as the Nasdaq has recently dropped by 15% from its peak. Analysts are advising caution to AI stock investors, echoing previous warnings about excessive valuations in the current market environment.