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ETF · holdings as filed 2026-05-31

What's inside FIFZX?

Fidelity Series Bond Index Fund
Holdings
10,029
positions in the fund
Top 10
9%
of fund assets
Expense ratio
0.00%
net, per year
Fund size
$34B
total net assets

Top 20 holdings

RankLogoTicker / NameWeight
1
T
T 3.875 04.15.29US TREASURY N/B
1.14%
2
T
T 3.75 05.15.28US TREASURY N/B
1.11%
3
T
T 4.625 06.15.27US TREASURY N/B
1.09%
4
T
T 4.125 02.15.36US TREASURY N/B
1.08%
5
T
T 3.5 01.15.29US TREASURY N/B
1.04%
6
T
T 4.5 02.15.44US TREASURY N/B
0.87%
7
T
T 3.875 06.15.28US TREASURY N/B
0.79%
8
?
—Fidelity Revere Street Trust
0.75%
9
T
T 4.125 04.30.33US TREASURY N/B
0.72%
10
T
T 4.625 02.15.46US TREASURY N/B
0.72%
11
T
T 5 05.15.45US TREASURY N/B
0.68%
12
T
T 4 04.30.32US TREASURY N/B
0.66%
13
T
T 2.75 08.15.32US TREASURY N/B
0.64%
14
T
T 4.25 02.15.54US TREASURY N/B
0.58%
15
T
T 3.875 04.30.31US TREASURY N/B
0.58%
16
T
T 4.125 10.31.31US TREASURY N/B
0.57%
17
T
T 3.875 12.31.32US TREASURY N/B
0.56%
18
T
T 4.75 05.15.55US TREASURY N/B
0.51%
19
T
T 4.375 11.30.30US TREASURY N/B
0.50%
20
T
T 3.375 09.15.28US TREASURY N/B
0.49%
Sectors
Top holdings — Bonds & Fixed Income
Your 10 largest positions in this sector
1
T
T 3.875 04.15.29US TREASURY N/B
1.14%
2
T
T 3.75 05.15.28US TREASURY N/B
1.11%
3
T
T 4.625 06.15.27US TREASURY N/B
1.09%
4
T
T 4.125 02.15.36US TREASURY N/B
1.08%
5
T
T 3.5 01.15.29US TREASURY N/B
1.04%
6
T
T 4.5 02.15.44US TREASURY N/B
0.87%
7
T
T 3.875 06.15.28US TREASURY N/B
0.79%
8
T
T 4.125 04.30.33US TREASURY N/B
0.72%
9
T
T 4.625 02.15.46US TREASURY N/B
0.72%
10
T
T 5 05.15.45US TREASURY N/B
0.68%
Geography
Top holdings — United States
Your 10 largest positions in this country
1
T
T 3.875 04.15.29US TREASURY N/B
1.14%
2
T
T 3.75 05.15.28US TREASURY N/B
1.11%
3
T
T 4.625 06.15.27US TREASURY N/B
1.09%
4
T
T 4.125 02.15.36US TREASURY N/B
1.08%
5
T
T 3.5 01.15.29US TREASURY N/B
1.04%
6
T
T 4.5 02.15.44US TREASURY N/B
0.87%
7
T
T 3.875 06.15.28US TREASURY N/B
0.79%
8
T
T 4.125 04.30.33US TREASURY N/B
0.72%
9
T
T 4.625 02.15.46US TREASURY N/B
0.72%
10
T
T 5 05.15.45US TREASURY N/B
0.68%
Geography reflects each issuer's registered business address per SEC EDGAR filings where available, falling back to the exchange or listing where no SEC filing exists — not necessarily where a company's stock is primarily listed (e.g. TSMC is classified as Taiwan even though its ADR trades on the NYSE).
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Funds similar to FIFZX
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BNDVANGUARD TOTAL BOND MARKET INDEX FUND
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VBTLXVANGUARD TOTAL BOND MARKET INDEX FUND
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SCHZSchwab U.S. Aggregate Bond ETF
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Data source: official SEC Form N-PORT filings (as of 2026-05-31); expense ratio from SEC prospectus (risk/return) filings. Fund holdings are disclosed quarterly and may reflect a 60-day reporting delay.
Informational and educational only — not investment advice.