Market breadth is flashing warning signs.

Over 58% of $SPX stocks now trading below their 200-day moving average—the weakest breadth reading since May.

This isn't about the index level. It's about what's happening beneath the surface. When more than half the market is underwater on a longer-term basis, it tells you participation is thin and the rally is being carried by fewer names.

Breadth deterioration like this often precedes choppier conditions or deeper pullbacks. Not a crash signal, but a reminder that internal health matters more than headline numbers.

Watch how this evolves over the next few weeks.