Is Main Street Capital Corp. overvalued or undervalued?

As of 13 May 2025, the valuation grade for Main Street Capital Corp. has moved from fair to attractive, indicating a positive shift in its perceived value. The company is currently considered undervalued. Key ratios include a P/E ratio of 10, a Price to Book Value of 1.80, and a robust ROCE of 24.60%.
When compared to peers, Main Street Capital Corp. has a lower P/E ratio than Janus Henderson Group Plc, which stands at 14.78, and a comparable EV to EBITDA ratio of 7.45 against its own 7.51. Additionally, the company's PEG ratio of 1.07 suggests it is reasonably priced relative to its growth expectations. Notably, Main Street Capital Corp. has outperformed the S&P 500 over the past year, with a return of 17.75% compared to the index's 10.26%, reinforcing its attractive valuation.