The Bond Market Sounds an Alarm. The Stock Market Will Make a Big Move if History Repeats.

U.S. Treasury bond yields have surged to their highest levels since July 2007, with the 10-year Treasury yield crossing above 5.0%. This sharp steepening of the yield curve has been driven by persistent inflation exceeding the Federal Reserve's 2% target, the U.S. national debt crossing $40 trillion, and a deluge of corporate bond issuance to fund an estimated $800 billion in artificial intelligence infrastructure capital expenditures. The disorderly rise in bond yields now represents the foremost risk facing equity markets, according to institutional investor surveys by Bank of America. Surging risk-free yields diminish the relative attractiveness of stocks, elevate corporate borrowing costs, and pressure valuation multiples across the broader market. Historically, the last time 10-year Treasury yields surpassed the 5% threshold in 2007, the S&P 500 and tech indices subsequently experienced declines exceeding 20% over the following year. While underlying economic fundamentals differ today, elevated yields present a critical headwind that could precipitate a broader stock market correction.