By Saqib Iqbal Ahmed

NEW YORK (Reuters) -The biggest bout of volatility in U.S. stocks in months has revealed cracks in the artificial intelligence-related rally, raising questions about whether the market has been in the grips of a speculative bubble that may be popping.

Soaring valuations in AI stocks this year have stoked worries that Wall Street may be inflating another speculative bubble, with some of these fears coming to the fore after a stellar earnings report from AI bellwether Nvidia failed to rally the stock and broader market.

In recent days investors have been watchful of emerging signs of cracks in the AI investment narrative. Several high-flying AI stocks have experienced sharp pullbacks, questions are mounting about when AI investments will translate into actual profits,

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