FNDSX — Fidelity Sustainability Bond Index Fund
Data updated: 2026-07-24
FNDSX — Fidelity Sustainability Bond Index Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Total / Aggregate Bond · $661.89M AUM · 0.10% expense ratio · 5.0% 1-yr return. From SEC regulatory filings.
FNDSX Fund Overview
FNDSX — Fidelity Sustainability Bond Index Fund is a US mutual fund managed by Fidelity Salem Street Trust, categorised as Long Total / Aggregate Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Fidelity Salem Street Trust
- Category: Long Total / Aggregate Bond
- Assets under management: $661.89M
- 1-year return: 5.0%
- Ticker: FNDSX
- SEC CIK: 0000035315
- SEC series ID: S000061665
- Share class ID: C000199795
FNDSX Holdings
Top 10 holdings of Fidelity Sustainability Bond Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Fidelity Revere Street Trust | 1.20% |
| Ust Notes | 1.12% |
| Ust Notes | 1.05% |
| Ust Notes | 0.96% |
| Ust Notes | 0.82% |
| United States Treasury Bond | 0.79% |
| Ust Notes | 0.79% |
| Ust Notes | 0.76% |
| Ust Notes | 0.74% |
| United States Treasury Bond | 0.72% |
FNDSX Portfolio Allocation
Asset-class allocation of Fidelity Sustainability Bond Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 75.0% |
| Securitized | 24.4% |
| Cash & Equivalents | 1.2% |
FNDSX Performance
Total returns for FNDSX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.5% |
| 1 year | 5.0% |
| 3 years (annualised) | 3.8% |
| 5 years (annualised) | 0.1% |
FNDSX Risk Information
Risk metrics for FNDSX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.3%
FNDSX Costs and Fees
FNDSX costs about $10 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.10%
- Gross expense ratio: 0.10%
- Portfolio turnover: 70%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
FNDSX Cashflows
Over the 12 months to 2026-02, Fidelity Sustainability Bond Index Fund had net inflows of $145.21M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-02 | $16.64M |
| 2026-01 | $10.79M |
| 2025-12 | $25.25M |
| 2025-11 | $7.65M |
| 2025-10 | $5.44M |
| 2025-09 | $12.14M |
FNDSX Debt Constituents
Largest debt holdings of Fidelity Sustainability Bond Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Ust Notes | 1.12% |
| Ust Notes | 1.05% |
| Ust Notes | 0.96% |
| Ust Notes | 0.82% |
| United States Treasury Bond | 0.79% |
| Ust Notes | 0.79% |
| Ust Notes | 0.76% |
| Ust Notes | 0.74% |
| United States Treasury Bond | 0.72% |
| Ust Notes | 0.69% |
FNDSX Prospectus and SEC Filings
Official Fidelity Sustainability Bond Index Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Long Total / Aggregate Bond funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.