The length of the tech stock rally for the Internet was approximately 18-20 months, from late 1998 to mid 2000. The present AI rally started in late 2022, and the Nasdaq just hit a new all time high now June 2025. So the AI market rally has surpassed the Internet, as it's been going on for about 2.5 years now. Mind you, stocks in a given technology always fizzle out years before the actual technology. So my opinion is, AI will be hot for another few years, but that the underlying stocks are at or near a top.