Vanguard Energy Index Fund Admiral Shares

This low-cost index fund offers exposure to the energy sector of the U.S. equity market, which includes stocks of companies involved in the exploration and production of energy products such as oil, and natural gas. The fund’s main risk is its narrow scope—it invests solely in energy stocks. An investor should expect high volatility from the fund, which should be considered only as a small portion of an already well-diversified portfolio.