Main Street Capital Corporation revenue for the last year amounted to 541.03 M USD, the most of which — 587.02 M USD — came from its highest performing source at the moment, Investment and Related Activities, the year earlier bringing 379.88 M USD. The greatest contribution to the revenue figure was made by United States — last year it brought Main Street Capital Corporation 587.02 M USD, and the year before that — 379.88 M USD.