Based in Houston, Texas, Main Street Capital Corporation is a principal investment firm that supports management buyouts, growth financings, and acquisitions in diverse industry sectors. With a focus on lower middle market companies with annual revenues between $10 million and $150 million, Main Street seeks to partner with entrepreneurs and management teams, offering "one-stop" financing alternatives. The company has a strong track record of investments in software and medical sectors, and notable portfolio startups include Drillinginfo, Volusion, and MinuteKey. Main Street Capital Corporation is known for its consistent investment activity, participating in 2-6 investment rounds annually, and has a preference for investing in rounds with a single participant.