Market breadth tells a story that headline indexes often hide.

When you look at how many stocks within each sector are actually making new highs—whether over 4 weeks or 52 weeks—you start to see which parts of the market have real momentum and which are just riding along.

Some sectors show broad strength, with dozens of names hitting new peaks. Others? A handful of leaders dragging the index up while most stocks sit flat or fade.

This kind of internal divergence matters more than people think. It's the difference between a healthy rally and a fragile one. When only a few names are working, the risk of a sharp reversal climbs. When strength is widespread, pullbacks tend to be shallow and short.

Pay attention to what's happening beneath the surface. The market rarely lies when you know where to look.