FS KKR Capital Corp. Common Stock, also called FS KKR, is an externally managed, non-diversified, closed-end management investment and finance company that invests primarily in the debt securities of private middle market U.S. companies. Read More Its objectives are to generate current income and, to a lesser extent, long-term capital appreciation. The company was founded by Michael Craig Forman on December 21, 2007 and is headquartered in Philadelphia, PA.