Unwrap.Fund
See how FNDSX fits your portfolio →
ETF · holdings as filed 2026-05-31

What's inside FNDSX?

Fidelity Sustainability Bond Index Fund
Holdings
3,495
positions in the fund
Top 10
9%
of fund assets
Expense ratio
0.10%
net, per year
Fund size
$662M
total net assets

Top 20 holdings

RankLogoTicker / NameWeight
1
?
—Fidelity Revere Street Trust
1.19%
2
T
T 3.5 02.15.29US TREASURY N/B
1.11%
3
T
T 3.875 05.31.27US TREASURY N/B
1.04%
4
T
T 3.875 06.15.28US TREASURY N/B
0.95%
5
T
T 3.875 04.30.31US TREASURY N/B
0.81%
6
T
T 4.625 11.15.45US TREASURY N/B
0.78%
7
T
T 3.875 04.15.29US TREASURY N/B
0.78%
8
T
T 3.875 03.15.28US TREASURY N/B
0.75%
9
T
T 3.375 09.15.28US TREASURY N/B
0.74%
10
T
T 4.625 02.15.46US TREASURY N/B
0.71%
11
T
T 4.25 02.15.28US TREASURY N/B
0.68%
12
T
T 4.25 02.15.54US TREASURY N/B
0.67%
13
T
T 3.875 07.15.28US TREASURY N/B
0.60%
14
T
T 4.125 11.15.27US TREASURY N/B
0.59%
15
T
T 4 07.31.32US TREASURY N/B
0.55%
16
T
T 3.75 10.31.32US TREASURY N/B
0.55%
17
T
T 3.5 11.15.28US TREASURY N/B
0.55%
18
T
T 4.125 08.15.44US TREASURY N/B
0.54%
19
T
T 3.625 08.15.28US TREASURY N/B
0.54%
20
T
T 3.75 04.15.28US TREASURY N/B
0.51%
Sectors
Top holdings — Bonds & Fixed Income
Your 10 largest positions in this sector
1
T
T 3.5 02.15.29US TREASURY N/B
1.11%
2
T
T 3.875 05.31.27US TREASURY N/B
1.04%
3
T
T 3.875 06.15.28US TREASURY N/B
0.95%
4
T
T 3.875 04.30.31US TREASURY N/B
0.81%
5
T
T 4.625 11.15.45US TREASURY N/B
0.78%
6
T
T 3.875 04.15.29US TREASURY N/B
0.78%
7
T
T 3.875 03.15.28US TREASURY N/B
0.75%
8
T
T 3.375 09.15.28US TREASURY N/B
0.74%
9
T
T 4.625 02.15.46US TREASURY N/B
0.71%
10
T
T 4.25 02.15.28US TREASURY N/B
0.68%
Geography
Top holdings — United States
Your 10 largest positions in this country
1
T
T 3.5 02.15.29US TREASURY N/B
1.11%
2
T
T 3.875 05.31.27US TREASURY N/B
1.04%
3
T
T 3.875 06.15.28US TREASURY N/B
0.95%
4
T
T 3.875 04.30.31US TREASURY N/B
0.81%
5
T
T 4.625 11.15.45US TREASURY N/B
0.78%
6
T
T 3.875 04.15.29US TREASURY N/B
0.78%
7
T
T 3.875 03.15.28US TREASURY N/B
0.75%
8
T
T 3.375 09.15.28US TREASURY N/B
0.74%
9
T
T 4.625 02.15.46US TREASURY N/B
0.71%
10
T
T 4.25 02.15.28US 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).
Hold FNDSX alongside other funds? See your combined true holdings, overlap, and blended fees — free, no signup.
Unwrap your portfolio →
Funds similar to FNDSX
FIBUXFidelity Flex U.S. Bond Index Fund
56% overlap
Compare →
FIFZXFidelity Series Bond Index Fund
49% overlap
Compare →
FXNAXFidelity U.S. Bond Index Fund
47% overlap
Compare →
BNDVANGUARD TOTAL BOND MARKET INDEX FUND
34% overlap
Compare →
VBTLXVANGUARD TOTAL BOND MARKET INDEX FUND
34% overlap
Compare →
SSAFXState Street Aggregate Bond Index Portfolio
33% overlap
Compare →
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.