@reuters: Soaring valuations, dramatic swings in the market value of trillion-dollar companies, and periodic sharp selloffs have fueled growing concerns that parts of the U.S. stock market may be in a bubble. Investors have long been skeptical of the astronomical gains in AI and semiconductor stocks, questioning whether Wall Street is inflating another speculative bubble. Markets reporter Saqib Ahmed has more. #stockmarket #AIbubble #speculation #stockbubble

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Wednesday 01 July 2026 15:50:54 GMT