What Is the Fidelity Treasury Only Money Market Fund?
The Fidelity Treasury Only Money Market Fund (ticker: FZDXX) is a money market mutual fund that limits its portfolio to U.S. Treasury securities, including bills, notes, and bonds. Unlike broader money market funds that may hold commercial paper, certificates of deposit, or repurchase agreements, this fund restricts itself to direct obligations of the U.S. government. That restriction shapes both the fund's risk profile and the type of investor it suits.
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The fund aims to preserve capital and provide liquidity while seeking current income. It is structured to maintain a stable $10 net asset value per share, though that guarantee is not absolute and depends on the fund's ability to manage interest-rate and credit risk within the Treasury market.
How the Fund Invests and Manages Risk
Fidelity Treasury Only Money Market Fund builds its portfolio from U.S. Treasury obligations across a range of maturities. By focusing on short- to intermediate-term government securities, the fund targets price stability and steady interest income. Because Treasuries are backed by the full faith and credit of the U.S. government, the fund's credit risk is minimal compared with money market funds that hold corporate or bank debt.
The fund's management team adjusts the maturity profile in response to interest-rate moves. When rates rise, shorter-dated instruments can reduce duration exposure; when rates fall, the portfolio can lengthen to capture higher yields. Investors should understand that while government backing reduces default risk, the fund is not immune to interest-rate risk or inflation risk over longer periods.
Who Should Consider This Fund
This fund can be a fit for investors who prioritize capital preservation and liquidity while accepting modest yield potential. It is often used for cash management, emergency reserves, or as a parking place for funds waiting to be deployed into other investments. The Treasury-only restriction may also appeal to those who want to avoid credit exposure to corporations or financial institutions.
However, the fund may not be ideal for investors seeking high income or inflation protection. Because Treasury yields reflect prevailing interest rates, real returns can turn negative in high-inflation environments. Investors should weigh the fund's stability against its yield limitations before committing significant assets.
Fidelity Treasury Only Money Market Fund vs. Other Money Market Options
| Feature | Fidelity Treasury Only | Broader Money Market Funds |
|---|---|---|
| Holdings | U.S. Treasury securities only | Treasuries, agency debt, commercial paper, CDs, repos |
| Credit Risk | Very low (U.S. government backing) | Low to moderate, depending on holdings |
| Yield Potential | Modest, tied to Treasury rates | Potentially higher, with added risk |
| Liquidity | High; typical money market redemption terms | High; varies by fund structure |
| Suitability | Conservative cash management | Broader cash management and income |
Yield, Fees, and Tax Considerations
Money market fund yields move with short-term interest rates set by the Federal Reserve. The Fidelity Treasury Only Money Market Fund's yield reflects prevailing Treasury rates and can fluctuate as the Fed adjusts its policy stance. Investors should review the fund's current 7-day yield and expense ratio before investing, as these figures directly affect net returns.
Interest earned from Treasury securities is exempt from state and local income tax, which can be an advantage for investors in high-tax states. Federal income tax still applies. The fund's expense ratio covers management and operational costs; a lower ratio means more of the yield stays with the investor.
How to Invest and What to Watch
Investors can typically buy the Fidelity Treasury Only Money Market Fund through a Fidelity brokerage account, often with no transaction fee for Fidelity customers. Minimum investment requirements may apply depending on the account type and platform used. Investors should monitor the fund's yield, expense ratio, and portfolio maturity profile over time.
Key factors to track include changes in the Fed's rate policy, shifts in the Treasury yield curve, and any changes to the fund's investment guidelines or management approach. While the fund is designed for stability, no money market fund is entirely risk-free, and past yields do not guarantee future results.
Bottom Line
The Fidelity Treasury Only Money Market Fund offers a straightforward way to hold U.S. government-backed securities in a money market wrapper. Its narrow focus on Treasuries reduces credit risk but limits yield potential relative to broader alternatives. Investors should consider the fund as part of a larger cash-management or fixed-income strategy, aligned with their tolerance for risk, liquidity needs, and tax situation.