The Fidelity Advisor Freedom Blend 2020 Fund Class Z (FJAIX) is a mutual fund that aims to provide investors with a diversified portfolio of assets that will mature in or around the year 2020. This fund is managed by Fidelity Investments and is designed to gradually shift towards more conservative investments as it approaches its target date. It is classified as a "blend" fund, meaning it invests in a mix of both growth and value stocks. The Class Z shares of this fund are typically only available to institutional investors and have lower fees compared to other share classes. Overall, the Fidelity Advisor Freedom Blend 2020 Fund Class Z offers a balanced and low-cost option for investors looking to reach their financial goals by the year 2020.