Just caught wind of something pretty significant. Michael Burry, the guy who basically called the housing collapse before everyone else and got immortalized in The Big Short, is getting vocal again — and this time he's sounding the alarm about the entire stock market structure.

So here's what happened: Burry shut down his fund, Scion Asset Management, and launched a Substack newsletter. He also did his first real public interview in years with Michael Lewis. The reason? He's genuinely concerned about a prolonged market downturn, and he doesn't want to be managing other people's money while it happens. Fair enough.

But what really caught my attention is his take on how the market has fundamentally changed. Back in the 2000s when Burry was betting against the housing market, he had to endure years of monthly losses on credit default swaps before being proven right. Painful process. Now he's looking at something different — the market structure itself.

The numbers are wild. Over half the money in the stock market is now passive. Meanwhile, less than 10% is being actively managed by people thinking long term. That's a massive shift from decades ago. Burry's concern is that when things go sideways, there won't be other pockets of value to rotate into like there were during the Nasdaq crash in 2000. Everything could just come down together.

He's also skeptical about the AI hype, comparing it to the dot-com bubble. Companies are inflating the useful life of their chips and servers to artificially lower depreciation expenses. Classic bubble behavior.

What's interesting is that Burry isn't the only smart money raising these flags. Even top value investors are questioning whether their strategy still works in this new market environment.

For regular investors, the takeaway seems to be: if you've got a 10, 20, or 30-year horizon, you're probably fine just holding. But if you're concerned about the passive investing time bomb Michael Burry is warning about, you might consider shifting to equal-weighted ETFs instead of market-cap weighted ones. That way you're not overexposed to the mega-cap AI plays.

The Big Short taught us that Burry has a knack for seeing what others miss. Whether this market downturn actually happens or not, his point about structural fragility is worth taking seriously. Market structure matters more than people think.