Just noticed something in the market that's worth paying attention to. The S&P 500 has been on an incredible run - up nearly 80% over the past three years. But here's what caught my eye: the Shiller CAPE ratio, which measures how expensive stocks have become, just dropped for the first time in almost a year. Sounds small, but it's actually strikingly significant when you look at the historical patterns.

Why? Because every time this valuation metric has declined in the past, the broader market has followed. The correlation is strikingly clear when you look at the charts. We're talking about periods where stocks either pulled back or stagnated instead of climbing higher. Now, I'm not saying the bull market is ending - these pullbacks don't always last long or cut deep. But the timing is interesting given all the recent noise: concerns about AI spending sustainability, uncertainty around interest rate cuts, and some sectors like enterprise software facing headwinds from AI disruption.

The run-up was fueled by optimism around high-growth areas - AI plays like Nvidia, quantum computing names, weight loss drug companies like Eli Lilly. The Fed's rate cuts helped too. But that same enthusiasm pushed valuations to levels we've only seen once before: during the dot-com boom in 2000. The Shiller CAPE went above 40, which is strikingly rare territory.

So what's next? Honestly, could be a few weeks of weakness, could be sideways trading. The real tell will come from economic reports, Fed messaging, and how these growth companies actually perform. But here's the thing - even if we do see a correction, the long-term pattern is strikingly consistent. The market always recovers and climbs higher over time. If you're holding quality companies for years, short-term dips barely matter.

Keeping an eye on how this plays out over the next month or so.