This chart shows the number of publicly listed companies in the United States from 2003 to 2024, categorizing them as either 1) microcaps, or 2) large-, mid-, and small-caps. The number of large-, mid-, and small-cap companies has remained relatively stable over this period, in the range of 2,000, while the number of microcap companies has fluctuated significantly, between about 1,500 and 2,000.