Business Development companies are closed-end funds that raise a substantial amount of money in an initial share offering. At that point the funds are closed and many are listed on the open stock market. They are required to place at least 70% of their monies in thinly traded companies or private companies. Many BDC's have web sites that publish their NAV usually once per quarter. The art of investing in a BDC is to purchase the shares at a discount or at least at par to the NAV. Blackrock Kelso's last NAV was stated as 9.77 per share.There have been many opportunities the last few days to purchase shares at a discount. Then, the dividends are simply gravy. Part of the NAV is figured on the future value of the notes, value of any shares held in companies and cash equivalents, and other financial instruments. I hope that this helps you with your inquiry. The best to all!