Market Advances To New High But On Weak Breadth

 | Jul 06, 2021 09:05PM ET

The S&P 500 Index broke out to new all-time highs recently (see chart below). This is a bullish market event.

That being said, the advance occurred in combination with poor market breadth. Meaning that there are a large number of stocks within the index that are not advancing to new highs. That may sound counter-intuitive, but it occurs because the index is capitalization-weighted and larger-cap stocks have a greater weighting in the performance of the index.