FLDB — Fidelity Low Duration Bond ETF
Data updated: 2026-07-24
FLDB — Fidelity Low Duration Bond ETF data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Ultra-Short Corporate Bond · $409.34M AUM · 0.20% expense ratio · 4.3% 1-yr return. From SEC regulatory filings.
FLDB Fund Overview
FLDB — Fidelity Low Duration Bond ETF is a US ETF managed by Fidelity Merrimack Street Trust, categorised as Ultra-Short Corporate Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US ETF
- Manager: Fidelity Merrimack Street Trust
- Category: Ultra-Short Corporate Bond
- Assets under management: $409.34M
- 1-year return: 4.3%
- Ticker: FLDB
- SEC CIK: 0001562565
- SEC series ID: S000084018
- Share class ID: C000248144
FLDB Holdings
Top 10 holdings of Fidelity Low Duration Bond ETF by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Ust Notes | 8.78% |
| Ust Notes | 6.98% |
| Ust Notes | 6.11% |
| Ust Notes | 2.80% |
| Ust Notes | 2.77% |
| Cvs Health Corp. | 0.42% |
| Royal Bank Of Canada | 0.40% |
| JPMORGAN CHASE and CO | 0.39% |
| Goldman Sachs Group, Inc. (the) | 0.39% |
| Flatiron Clo 28 Ltd. / Flatiron Clo 28 LLC | 0.38% |
FLDB Portfolio Allocation
Asset-class allocation of Fidelity Low Duration Bond ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 78.8% |
| Securitized | 21.4% |
| Cash & Equivalents | 0.2% |
FLDB Performance
Total returns for FLDB (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.4% |
| 1 year | 4.3% |
| 3 years (annualised) | 4.8% |
FLDB Risk Information
Risk metrics for FLDB, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 0.3%
FLDB Costs and Fees
FLDB costs about $20 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.20%
- Gross expense ratio: 0.20%
- Portfolio turnover: 59%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
FLDB Cashflows
Over the 12 months to 2026-02, Fidelity Low Duration Bond ETF had net inflows of $31.53M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-02 | $10.09M |
| 2026-01 | $3.78M |
| 2025-12 | $1.26M |
| 2025-11 | $3.79M |
| 2025-10 | $2.53M |
| 2025-09 | $1.26M |
FLDB Debt Constituents
Largest debt holdings of Fidelity Low Duration Bond ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Ust Notes | 8.78% |
| Ust Notes | 6.98% |
| Ust Notes | 6.11% |
| Ust Notes | 2.80% |
| Ust Notes | 2.77% |
| Cvs Health Corp. | 0.42% |
| Royal Bank Of Canada | 0.40% |
| JPMORGAN CHASE and CO | 0.39% |
| Goldman Sachs Group, Inc. (the) | 0.39% |
| Vmware LLC | 0.38% |
FLDB Prospectus and SEC Filings
Official Fidelity Low Duration Bond ETF filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Ultra-Short Corporate 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.