Tortoise North American Energy is registered as a non-diversified, closed-end management investment company. Co.'s investment objective is to seek a high level of total return. It invests at least 80% of its total assets in equity securities of companies in the energy sector with their primary operations in North America, including energy infrastructure, oil and gas exploitation and energy shipping companies. As of Nov 30 2012, Co.'s total investment portfolio was $225,877,877 and total assets were $225,987,919.