On Wall Street, the debate over whether there's an artificial intelligence (AI) bubble is intensifying, and investors are currently on high alert, wondering when it's the right time to cash out of the market. Market research firm BCA Research highlighted in its latest report that a situation akin to the "metaverse craze" unfolding in the AI sector could serve as a telltale sign for investors to exit. Specifically, when major AI companies ramp up their capital expenditures, yet their stock prices take a nosedive, it's a red flag. This scenario draws parallels to the metaverse frenzy, where the tech concept initially captured the public's imagination and soared in popularity. However, it eventually fizzled out due to the absence of tangible returns. BCA Research cautions that investors might have overestimated AI's transformative power and profit-making potential. Moreover, it raises questions about whether the current valuations of AI systems are justified.