Supplement to the
Fidelity® Short-Term Treasury Bond Index Fund
April 29, 2024
Summary Prospectus
 

Richard Munclinger no longer serves as Co-Portfolio Manager of the fund.

The following information supplements information found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Mark Lande (Co-Portfolio Manager) has managed the fund since 2024.

STD-I-SUSTK-0125-102 1.9900312.102 January 31, 2025