Interest rates greatly affect many personal finance choices. From refinancing mortgages for more affordable payments to transferring credit card balances for faster payoffs; historically low interest rates are helping Americans improve their finances. However, making investment decisions can be more difficult in a low interest rate economy. It is important to understand the degree of interest rate risk in your portfolio and rebalance investments accordingly if needed. While investment strategies run the gamut, most everyday investors own fixed income in the form of bonds, CDs or savings accounts. Simply avoiding fixed income investments or taking excessive risks for yield can...