Fidelity Advisor Investment Grade Bond Fund - Class Z 

This fund primarily invests in debt instruments that possess an investment-grade credit rating, indicating they are of medium to high quality. Typically, a minimum of 80% of its assets are allocated to these various types of securities, as well as to corresponding repurchase agreements. The portfolio's holdings are strategically spread across diverse market segments and a range of maturity dates. Additionally, the fund includes securities issued by both U.S. and non-U.S. entities.