The fair value of these investments is impacted by market conditions, including changes in interest rates, and the availability of financing at reasonable rates and leverage levels, among other factors. The Company's investment strategy attempts to mitigate these risks by focusing on investments in agency-guaranteed residential mortgage pass-through securities, which are considered to have little, if any, credit risk and are collateralized by ARM loans with interest rates that reset periodically to more current levels. Because of these characteristics, the fair value of Capstead's portfolio is considerably less vulnerable to significant pricing declines caused by credit concerns or rising interest rates compared to portfolios containing a significant amount of non-agency and/or fixed-rate mortgage securities.