Under normal market conditions, the Fund will invest at least 80 percent of its net assets (plus any borrowings for investment purposes) in securities of natural resource companies, which the Advisor defines as companies which are engaged in the business of holding natural resource assets or earning revenues which are derived from natural resources, or which otherwise form part of the value chain of natural resource industries, which includes the exploration, mining, extraction, production, processing, storage or transportation of natural resources or otherwise developing or providing goods and services that are related to natural resources, such as manufactures of equipment used for the foregoing. The Advisor considers natural resources to include precious metals (e.g., gold, platinum, palladium or silver), non-precious metals (e.g., copper, zinc or iron ore), minerals, traditional energy sources (e.g., oil, natural gas or coal), renewable energy sources (e.g., wind, solar, biomass, geothermal or hydroelectric), timber and forestry products, food and agricultural products (e.g., fertilizer), farm machinery and chemicals. The Fund will concentrate its investments (i.e., hold at least 25 percent of its net assets) in securities of natural resource companies. The Fund may invest in securities of natural resource companies of any market capitalization.