Oxford Square Capital Corp. operates as a business development company (BDC) and a closed-end, non-diversified management investment vehicle, functioning as a private equity and mezzanine firm. The company allocates capital to both publicly traded and privately held enterprises. Its investment portfolio predominantly features debt and/or equity securities, encompassing secured and unsecured senior debt, subordinated debt, junior subordinated debt, preferred stock, common stock, and syndicated bank loans.