In early June, the S&P 500 rose by more than 20% from its October low, reaching its highest level since April of last year. Often observed as a barometer for the overall health of the U.S. economy, the index’s strong performance generated some optimism with respect to the trajectory of the U.S. economy. However, when considering the market breadth, which refers to the number of stocks that are moving the index, a less optimistic picture emerges.