Why invest in money market funds?
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Why invest in money market funds?

Updated
22 May
2025
published
21 May
2025
  • Money market funds (MMFs) offer investors a highly liquid, low-risk diversifier within their portfolios.
  • MMFs invest in a diversified portfolio of short-term debt instruments, and are a common component of cash management solutions
  • However, changes in interest rates may affect the yield of MMFs. When interest rates rise, the value of existing debt securities could potentially decline.
  • Access a tailored list of MMFs through Endowus Fund Smart, which offers institutional access to world-class fund strategies.

Money market funds (MMFs) are investment vehicles for those seeking capital preservation with modest returns, offering a unique blend of stability and liquidity. As interest rates fluctuate and economic uncertainties persist, MMFs have emerged as a popular choice for both individual and institutional investors. 

This article delves into the mechanics of MMFs, exploring their composition, advantages, and potential drawbacks. Keep reading to understand how these funds can complement your investment strategy.

What are money market funds?

MMFs are a type of mutual fund that invests in high-quality, short-term debt instruments and cash equivalents, such as Treasury bills (T-bills), commercial paper, and certificates of deposit. 

They aim to provide investors with a relatively low-risk option for investing excess cash or acting as a diversifier within an investment portfolio, and typically offer higher yields than traditional savings accounts.

What does a money market fund own?

MMFs tend to be carefully structured to maintain stability and liquidity. To achieve these two goals, almost all of a fund's assets are usually invested in cash, government securities, and other highly liquid instruments. 

The weighted average maturity of the portfolio is typically kept under three months to manage interest rate risk. MMFs are made up of money market instruments, which typically include:

  • Treasury bills: Treasury bills (T-bills) are a cornerstone of many MMFs. These short-term government debt instruments typically mature in between 3 months and a year. T-bills can be viewed as a safe investment. Taking Hong Kong Exchange Fund Bills as an example, they are backed by the Hong Kong government and provide stable and secure returns for investors. 
  • Certificate of deposit (CD): A certificate of deposit is a type of fixed deposit issued by local banks in Hong Kong with specific maturity dates and interest rates. CDs within a money market fund are typically of high quality and short duration, ranging from a few weeks to several months. 
  • Commercial paper: Commercial papers are unsecured, short-term corporate debt notes. Within an MMF, commercial papers tend to be issued by companies with high credit scores and may offer a higher yield compared to government securities. That being said, commercial paper is unsecured and is based on the issuing company’s financial conditions.
  • Repurchase agreement: A repurchase agreement refers to a short-term borrowing tool where a single party temporarily sells securities to a secondary party with an agreement to buy those securities back in the future. Repurchase agreements provide money market funds with liquidity and grant short-term funding, and can reach maturity overnight. 
  • Bills of exchange: A bill of exchange is a short-term negotiable instrument that requires the drawee (usually a bank or a corporation) to pay an amount to the bearer on a specific date. Bills of exchange are highly versatile and can be traded in the secondary market. They tend to be low-risk instruments when issued by reputable banks or corporations.

Some of these instruments require a minimum lot size, making them inaccessible to investors who have a smaller amount of capital on hand. MMFs enable them to participate with a much smaller capital, allowing them to invest in these high-quality, short-term debt instruments.

How do money market funds compare to other cash-like intrusments?

Other popular options to grow your cash in Hong Kong include high-interest savings accounts, fixed deposits, Exchange Fund Bills, iBonds, retail green bonds, and silver bonds. 

Beyond yields, other factors to consider are your risk tolerance, liquidity needs, investment capital (considering minimum investment sums or limits) and transaction costs.

Type of Instrument Capital Guarantee Lock-up Duration Application Time Minimum Investment Maximum Investment Transaction Fees
Fixed deposits Yes, by the Deposit Protection Scheme Yes; penalty for early withdrawal Months or years Days Yes; depends on the bank None None
Hong Kong government Exchange Fund Bills & Notes Programme No, but backed by government credit Can be sold, but it will be possible to charge a cost or incur price fluctuation risk in the secondary market. 91 days to 1 year (Exchange Fund Bills)
2 years (Exchange Fund Notes)
Issued in the second month of each quarter, covering the EFBN tenders in the following quarter. HK$500,000 (Exchange Fund Bills) or HK$50,000 (Exchange Fund Notes) minimum, in increments of HK$50,000 None Varies by broker
iBonds No, but backed by government credit No early withdrawal penalty, but might generate a lower yield 3 years Usually 1 to 2 weeks HK$10,000 minimum, in increments of HK$10,000 None None
Cash management funds on Endowus No No Typically less than 1 year Days HK$500 or US$100 None None

Source: Hong Kong Monetary Authority, Hong Kong Government bond, Endowus Research.

SFC's liquidity standards for money market funds

The Hong Kong Securities and Futures Commission (SFC) mandates stringent liquidity standards for money market funds (MMFs) to ensure investor protection and fund stability.

  • MMFs must maintain at least 7.5% of net asset value (NAV) in daily liquidity assets and 15% in weekly liquidity assets.
  • Portfolio holdings should have a weighted average maturity of no more than 60 days.
  • Investments are limited to high-quality, short-term instruments, with restrictions on issuer concentration and illiquid assets.
  • Robust liquidity risk management frameworks, including stress testing, are essential, alongside clear disclosure and compliance with international standards.

For further details, refer to the SFC’s Code on Unit Trusts and Circular on MMF Liquidity Management.

Advantages of money market funds

MMFs offer diversification across various short-term, high-quality money market instruments, reducing the risk associated with a single issuer. MMFs also offer steady yields with no lock-up period.

With fund managers of the MMFs to manage your investments, this saves you the time and effort to ensure that your money is always optimised, including automatically reinvesting returns.

Potential drawbacks of money market funds

While MMFs are generally considered low-risk investments, they are not without drawbacks. In a low-interest-rate environment, yields may not be able to keep pace with inflation. 

Be careful not to over-allocate to MMFs (despite the appeal of lower risks) if you are investing for long-term capital growth. Unlike bank deposits, MMFs are neither capital-guaranteed nor protected by the Deposit Protection Scheme (DPS) as they are considered investment products, not deposits. While rare, an MMF can experience periods of negative returns. 

When considering an MMF, carefully weigh these pros and cons against your financial goals and risk tolerance.

How do money market funds fit into your portfolio in Hong Kong?

Based on a survey done in 2024 by the Hong Kong Investment Fund Association, more than half of the respondents allocate assets for regular collection of interests. But, there is more to cash-like products than merely yields. MMFs, for example, serve as a liquid, low-risk component in a portfolio. This conservative approach makes them an ideal choice for:

  • Cash management: MMFs generate yields while maintaining liquidity, making them suitable for parking funds temporarily.
  • Short-term goals: MMFs offer a relatively stable option for financial objectives within a one- to three-year timeframe.

When determining the appropriate MMF allocation, consider your risk tolerance, investment horizon, and liquidity needs. For conservative investors or those nearing retirement, a larger MMF allocation may be suitable. Conversely, younger investors with a longer time horizon might opt for a smaller MMF component, focusing more on growth-oriented assets.

How to choose the best money market funds in Hong Kong

Here are a few components you should look at when choosing which MMFs to invest in:

  • Fund characteristics: Look at the fund's size and types of investments. Larger funds often benefit from economies of scale, potentially leading to lower expenses. 
  • Yield and performance: Compare current and historical yields of different MMFs. While past performance doesn't guarantee future results, it can indicate consistency. Find out the latest yields of MMFs on Endowus here.
  • Risk profile: Assess the fund's credit quality, duration, and diversification. MMFs are generally low-risk, but understanding potential credit and interest rate risks is crucial. Choose a fund that aligns with your risk tolerance and investment horizon.
  • Fees and accessibility: Even a 1% difference in fees can eat into your returns – always check for the fund's expense ratio and other fees, such as subscription or withdrawal fees.

Explore best-in-class money market funds on Endowus 

The Endowus Investment Office has screened and selected best-in-class unit trusts, including MMFs, managed by global asset managers with proven track records. We keep your investment costs low by rebating any trailer fees, which are paid by fund managers to Endowus, to you. 

Learn about our CashUp Portfolios, which are designed with varying allocations to cash funds and MMFs to tailor to different needs. Explore our list of money market funds on Fund Smart, if you wish to invest in single funds.

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Risk Warnings

Investment involves risk. Past performance is not an indicator nor a guarantee of future performance or returns. Projected performance or returns is not guaranteed to materialise. The value of investments and the income from them can go down as well as up, and you may not get the full amount you invested. 

Rates of exchange may cause the value of investments to go up or down. Individual stock performance does not represent the return of a fund.

General risk warnings relating to collective investment schemes 

Before making an investment decision, you are reminded to refer to the relevant prospectus/ offering document for specific risk considerations and related fees and charges.

Funds are not a bank deposit and not capital guaranteed, and is subject to investment risks, including the possible loss of the principal amount invested.  

Some of the funds also involve derivatives. Do not invest in them unless you fully understand and are willing to assume the risks associated with them.

Opinions

Any forward-looking statements, prediction, projection or forecast on the economy, stock market, bond market or economic trends of the markets contained in this material are subject to market influences and contingent upon matters outside the control of Endowus HK Limited (“Endowus”) and therefore may not be realised in the future. Further, any opinion or estimate is made on a general basis and subject to change without notice. In presenting the information above, none of Endowus HK Limited, its affiliates, directors, employees, representatives or agents have given any consideration to, nor have made any investigation of the objective, financial situation or particular need of any user, reader, any specific person or group of persons. Therefore, no representation is made as to the completeness and adequacy of the information to make an informed decision. You should carefully consider (i) whether any investment views and products/ services are appropriate in view of your investment experience, objectives, financial resources and relevant circumstances. You may also wish to seek financial advice through a financial advisor or the Endowus platform and independent legal, accounting, regulatory or tax advice, as appropriate.

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Product Risk Rating: Please note that any product risk rating (the “PRR”) provided by us is an internal rating assigned based on our product risk assessment model, and is for your reference only. The PRR is subject to change from time to time. The PRR does not take into account your individual circumstances, objectives or needs and should not be regarded as advice or recommendation to purchase, hold or sell any fund or make any other investment decisions. Accordingly, you should not solely rely on the PRR in making your investment decision in the relevant Fund.

This advertisement has not been reviewed by the Securities and Futures Commission or any regulatory authority in Hong Kong.

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