Rich stock market valuations, investor complacency, circular financing, and the potential knock-on effects in credit markets are a clear warning in the BIS annual report. The Bank for International Settlements, often called the central bank of central banks, is ringing the alarm bell loud enough to wake even the most sleepwalking investor. And you should listen.
The BIS dropped its annual report Monday, and it’s not exactly a feel-good summer read. The message: the AI frenzy that’s been juicing stock markets for the past 18 months has all the hallmarks of a classic bubble. And when that bubble pops — not if, but when — it could take the entire economy down with it.
Circular Financing: The Quiet Killer
Here’s the problem in a nutshell. Big tech companies are plowing billions into AI infrastructure — data centers, chips, energy grids. But where’s that money coming from? A lot of it is borrowed, and a lot of that borrowing is backed by the very stocks that are inflated by the AI hype. That’s circular financing, and it’s the kind of thing that keeps central bankers up at night.
“The financial system is financing itself in a loop. It’s not funding real economic activity — it’s funding speculation on speculation.”
The BIS report calls this out explicitly. It says that rising leverage in the non-bank financial sector — think hedge funds, private equity, and the like — is creating a “fragile structure” that could unravel quickly if sentiment shifts. And sentiment, as any veteran trader will tell you, can shift in the time it takes to blink.
Valuations That Defy Gravity
The stock market is expensive. That’s not a hot take — it’s a fact. The Shiller CAPE ratio, which adjusts for inflation, is hovering near levels seen only twice before: right before the 1929 crash and right before the dot-com bust. But this time, the bulls say, it’s different. AI is a genuine revolution, they insist. It’s not like the internet bubble — it’s bigger, it’s real, it’s transformative.
Maybe. But the BIS isn’t buying it. The report notes that even if AI delivers on its promises — and that’s a big if — the valuations already baked in are pricing in decades of perfect execution. One misstep, one regulatory clampdown, one disappointing earnings call, and the whole house of cards could come tumbling down.
Complacency Is the Enemy
The BIS also warns about investor complacency. Volatility is low. Credit spreads are tight. Everyone seems to think the good times will roll forever. That’s exactly the kind of environment where risk gets mispriced and leverage piles up unseen.
You can almost hear the central bankers shaking their heads. They’ve seen this movie before. In 2007, everyone said housing was different. In 1999, everyone said the internet changed everything. It did — but not before the Nasdaq lost 78% of its value.
Credit Markets: The Next Domino?
The BIS report goes deeper than just stocks. It warns that if the AI-fueled equity market corrects sharply, the damage could spill into credit markets. Corporate debt, especially in the high-yield space, is already stretched. Companies borrowed cheap during the low-rate era, and now they’re rolling over that debt at higher rates. If their stock prices tank, their ability to refinance gets crushed.
“A correction in equity markets would test the resilience of the financial system in ways we haven’t seen since the global financial crisis.”
That’s not an exaggeration. The BIS rarely uses that kind of language. When they do, it’s time to pay attention.
What Should You Do?
I’m not going to tell you to sell everything and hide in cash. But I will tell you this: the risk-reward ratio in AI stocks is terrible right now. You’re getting paid pennies to take on dollars of potential downside. The BIS report is a flashing red light — ignore it at your peril.
The central bankers are paid to worry. But this time, their worry looks justified. The AI frenzy has created a monster. And monsters, sooner or later, always come home to roost.
So keep your eyes open. Tighten your seatbelt. And don’t say you weren’t warned.
