A huge one-day selloff in stocks is making more sense once you look at the bond market, and the setup looks bad for AI-driven tech giants down the road.

• Stocks just had their worst day since the "Liberation Day" tariff shock, wiping out trillions in value, but the real warning came earlier from corporate bonds of companies like Nvidia, Amazon, and Alphabet.
• Bond investors started dumping these companies' debt months before stocks cracked, just like before the dot-com bust, the 2008 crash, and the 2022 selloff.
• The twist this time: these companies are piling on debt at a record pace to fund AI spending, but their stock values have grown even faster, so the debt still looks small compared to their size, letting them borrow even more than before.
• Oddly, part of the bond selling is because company profits are growing so fast that investors would rather own the stock than the bonds, not because they're scared, but it still pushes borrowing costs higher either way.
• Near-term, financial conditions still look decent for corporate profits, so stocks could keep climbing and companies could keep loading up on debt into 2027, but when that eventually breaks, the pullback is expected to be worse than prior cycles, and that kind of environment has historically been very good for gold.

Outlook: Corporate profits and stocks may stay strong for another year or so, but the growing debt pile points to a sharper reckoning around 2027.