MDST invests North American midstream investments while employing a covered call strategy. The actively managed fund targets investment grade, midstream securities from the US and Canada that include companies engaged in the energy infrastructure industry and ancillary businesses. The fund may directly invest up to 25% in US MLPs that are publicly traded and treated as partnerships for federal income tax purposes. The fund employs a bottom-up, research-driven selection process with emphasis on opportunities and growth prospects. In addition, the advisor maintains proprietary business valuation models and analyzes various fundamental and technical factors. To enhance income, the fund writes call options on securities held within the portfolio. It may also use standardized exchange-traded and FLEX options. The fund expects returns from the distribution yield, covered call premiums, cash distribution growth, and potential price appreciation. Single securities are capped at 15%.