While Wall Street remains fixated on upcoming NVIDIA Corp (NASDAQ:NVDA) earnings, the bond market may be flashing the more important signal.

• NVIDIA stock is showing upward bias. Where are NVDA shares going?

Bond Market Sends Warning Signal

The yield on the 30-year Treasury bond climbed to 5.18% on Tuesday, its highest level since 2007, intensifying the sell-off in long-duration Treasury ETFs and reigniting fears that "higher for longer" interest rates are becoming a structural market problem rather than a temporary one.

That matters because rising Treasury yields do not just hit bonds — they also pressure the valuations of long-duration growth assets, particularly technology and AI stocks whose future cash flows become less attractive as rates climb.