Just noticed something worth paying attention to. The S&P 500 has been basically flat so far this year, but here's what caught my eye: the Shiller CAPE ratio just dropped for the first time in almost a year. Sounds small, but it's actually a pretty significant signal.

For context, this ratio measures stock valuations against earnings. Earlier in 2025, it hit over 40 — only happened once before during the dot-com bubble around 2000. So yeah, we've been in crazy valuation territory. The last few months though, we've seen some pressure: concerns about AI spending sustainability, questions about whether those massive valuations can hold up, uncertainty on interest rate cuts. That's been enough to cool things down.

Here's where history gets interesting. When the CAPE ratio has declined in the past, the market typically followed. So we might be looking at a period of weakness ahead — could last weeks, could mean stagnation instead of big gains. It's not necessarily the end of the bull market, but it's definitely worth watching how things unfold from here.

The real takeaway? Keep an eye on economic reports and how growth stocks actually perform. Those will tell us whether this is just a normal pullback or something more significant. Either way, this is the kind of market signal traders shouldn't ignore right now.