The U.S. Department of Labor's Employee Benefits Security Administration issued tips intended to help plan sponsors select and monitor target date funds (TDFs) in their investment lineups. These target date fund basic definitions will help plan fiduciaries navigate the Department of Labor Tips for ERISA Plan Fiduciaries. Asset classes are groups of securities that exhibit similar characteristics. The three main asset classes are equities (stock), fixed-income (bonds), and cash. Additional asset classes that may be employed within a target date fund are: world bond, emerging markets, and/or real assets like commodities and real estate investment trusts (REITs). Risk is the probability or likelihood that an investment’s actual return will be different from the expected return. This includes the possibility of losing some or all of the original investment. Volatility refers to the relative rate at which the price of a security moves up or down. Certain investments are more volatile