FLDB
Fidelity Low Duration Bond ETF
Fidelity Merrimack Street Trust
ETF
Expense ratio1
0.20%
Net assets2
$403.98M
Holdings2
394
Category
Taxable Bond
2025 return3
4.77%

Investment objective & strategy

As of Dec. 29, 2025 · prospectus

Objective. Fidelity Low Duration Bond ETF seeks to obtain a high level of current income consistent with preservation of capital.

Strategy. Normally investing at least 80% of assets in investment-grade debt securities (those of medium and high quality) of all types and repurchase agreements for those securities. Debt securities are used by issuers to borrow money. The issuer usually pays a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security. Debt securities include corporate bonds, government securities (including Treasury securities), repurchase agreements, money market securities, mortgage and other asset-backed securities, loans and loan participations, and other securities, such as hybrids and synthetic securities, believed to have debt-like characteristics (e.g., securities classified as Tier 2 Regulatory capital, securities that rank above share capital in an insolvency waterfall, securities with maturity dates … Normally investing at least 80% of assets in investment-grade debt securities (those of medium and high quality) of all types and repurchase agreements for those securities. Debt securities are used by issuers to borrow money. The issuer usually pays a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security. Debt securities include corporate bonds, government securities (including Treasury securities), repurchase agreements, money market securities, mortgage and other asset-backed securities, loans and loan participations, and other securities, such as hybrids and synthetic securities, believed to have debt-like characteristics (e.g., securities classified as Tier 2 Regulatory capital, securities that rank above share capital in an insolvency waterfall, securities with maturity dates and non-cancellable interest payment structures). Investment grade securities in which the fund invests include securities or issuers rated at least BBB- or its equivalent by at least one nationally recognized statistical ratings organization (NRSRO), or, if unrated, determined by the Adviser to be of comparable quality. A repurchase agreement is an agreement to buy a security at one price and a simultaneous agreement to sell it back at an agreed-upon price. Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Normally maintaining a duration of 1 year or less. Managing the fund to have similar overall interest rate risk to the Bloomberg US Treasury Bill: 6-9 Months Index. Normally maintaining a dollar-weighted average maturity of two years or less. Allocating assets across different market sectors and maturities. Investing more than 25% of total assets in the financial services industries. Investing in domestic and foreign issuers. Analyzing the credit quality of the issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments. Engaging in transactions that have a leveraging effect on the fund, including investments in derivatives - such as swaps (interest rate, total return, and credit default), options, and futures contracts - and forward-settling securities, to adjust the fund's risk exposure.

Top holdings

As of Feb. 28, 2026 · N-PORT
SecurityTickerValue% of fund
US TREASURY N/B $35.03M 8.67%
US TREASURY N/B $28.74M 7.11%
US TREASURY N/B $21.59M 5.34%
Fidelity Cash Central Fund $8.65M 2.14%
US TREASURY N/B $8.20M 2.03%
US TREASURY N/B $7.54M 1.87%
CVS HEALTH CORP $1.70M 0.42%
WELLS FARGO CO $1.63M 0.40%
JPM V6.07 10/22/27 JPM $1.57M 0.39%
ROYAL BK CANADA $1.55M 0.38%
View all holdings →

Allocation by sector

As of February 28, 2026 · N-PORT
View portfolio breakdown →

Portfolio moves

Nov 30, 2025 → Feb 28, 2026
Opened
67
Exited
51
Increased
63
Decreased
115
Unchanged
149

How many positions this fund opened, exited, grew, trimmed, or left unchanged between its two most recent N-PORT snapshots — net changes between point-in-time reports, not a trade log.

View portfolio moves →

Similar funds

Funds whose portfolios most overlap this one, by weight
FundOverlapNet exp.
Fidelity SAI Sustainable Low Duration Bond Fund · FAPFX 58% 0.20%
Fidelity SAI Low Duration Bond Fund · FZOLX 56% 0.20%
Fidelity Sustainable Low Duration Bond Fund · FAMZX, FAPBX, FANDX, FAPDX, FAPEX, FAPGX 55% 0.20%
View all similar funds →

Advisers

As of August 31, 2025 · N-CEN
FirmRole
FMR Investment Management (UK) Limited Sub-adviser
Fidelity Management & Research (Japan) Limited Sub-adviser
Fidelity Management & Research (Hong Kong) Limited Sub-adviser
Fidelity Management & Research Company LLC Adviser

Footnotes

  1. Expense ratio as of December 29, 2025, from the fund's prospectus.
  2. Net assets and holdings count as of February 28, 2026, from the fund's N-PORT filing.
  3. Total return for calendar year 2025, before tax and after fund expenses. Computed by compounding the twelve monthly total returns the fund reported in its SEC N-PORT filings for 2025 (the latest prospectus does not yet chart this year).

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