Supplement to the
Fidelity® Long-Term 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.
LBX-I-SUSTK-1025-103
1.9900300.103
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October 1, 2025
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