Supplement to the
Fidelity® SAI Intermediate Treasury Bond Index Fund
April 29, 2025
Summary Prospectus
 
The following information supplements information found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.
Van Eswara (Co-Portfolio Manager) has managed the fund since 2025.
TBN-SUSTK-1025-102
1.9918161.102
October 1, 2025