Main Street Capital Corporation revenue for the last year amounted to 500.38 M USD, the most of which — 379.88 M USD — came from its highest performing source at the moment, Investment and Related Activities, the year earlier bringing 371.65 M USD. The greatest contribution to the revenue figure was made by United States — last year it brought Main Street Capital Corporation 379.88 M USD, and the year before that — 371.65 M USD.