What a mutual fund means
A mutual fund is a pooled investment vehicle. Many investors put money into a single fund, and a professional manager invests the combined pot in a portfolio of assets such as shares, bonds, money-market instruments or a mix. Each investor owns units or shares in the fund and so holds a proportional slice of everything it owns.
Funds exist for almost every strategy: equity funds, bond funds, balanced funds, sector funds and funds that follow an index. Some are actively managed, where the manager picks holdings in an attempt to beat a benchmark. Others are passive and simply replicate an index, which makes them close relatives of index funds and ETFs.
The label varies by country. In Europe, many such funds are called UCITS funds, in the UK there are unit trusts and open-ended investment companies, and in the United States the term mutual fund is standard. The core idea is the same: pooled money, shared costs, professional management.
How it works
Most mutual funds are open-ended. The fund creates new units when investors buy and cancels units when they sell. Prices are set once per dealing day, not continuously.
- The fund calculates its net asset value (NAV) after markets close: total assets minus liabilities, divided by the number of units.
- Orders placed before the dealing cut-off are executed at that day's NAV, often without knowing the exact price in advance.
- Settlement follows in a few days, depending on the fund and market.
- The fund charges fees, typically an ongoing charge taken from fund assets. Some also have entry or exit charges, or performance fees.
- Income from dividends or interest is either paid out or reinvested, depending on the share class.
This once-a-day pricing is the main structural difference from an ETF, which trades on an exchange all day at a changing market price. Funds also offer different share classes with different fees, currencies and distribution policies.
A worked example
The figures are illustrative. A fund holds assets worth 200,000,000 and has liabilities of 2,000,000. It has 10,000,000 units outstanding.
- NAV per unit = (200,000,000 - 2,000,000) ÷ 10,000,000 = 19.80
An investor places an order to invest 3,960 before the cut-off. Assuming no entry fee, the units bought = 3,960 ÷ 19.80 = 200 units.
If the ongoing charge is 1.2 percent a year, the annual cost on a holding worth 3,960 is 3,960 x 0.012 = 47.52, reflected gradually in the fund price rather than billed separately. Over twenty years, a fee difference of one percentage point compared with a cheaper fund can reduce final value noticeably, because the cost is paid every year on the full balance.
Why it matters
Mutual funds give access to diversification with a small amount of money. A single purchase can spread an investment across dozens or hundreds of securities, which would be costly to build individually. They also suit regular savings plans, since you can invest fixed amounts and buy fractions of units.
Costs are the key difference between funds. Ongoing charges, entry fees, performance fees and transaction costs inside the fund all reduce returns. Past performance does not predict future results, and many active funds fail to beat their benchmark after fees over long periods.
Compared with ETFs, mutual funds may have higher minimums, slower dealing and fewer options for intraday trading, though some offer access to strategies ETFs do not.
How to use it in practice
- Read the key investor document and the prospectus for objectives, risks and charges.
- Compare the ongoing charge and any entry, exit or performance fees across similar funds.
- Check the benchmark and how the fund has performed against it after costs over several periods.
- Look at holdings, concentration and the manager's approach.
- Check dealing cut-offs, settlement and minimum investment.
- Consider tax treatment and the share class that suits your situation.
Common mistakes and misconceptions
- Choosing by last year's top return. Past performance is not a guide to the future.
- Ignoring fees because they are shown as a percentage. Small percentages compound over decades.
- Assuming a fund is safe because it is diversified. Diversification reduces single-security risk but not market risk.
- Buying several funds that hold the same stocks and believing this adds diversification.
- Confusing a mutual fund with a money market account. Funds can fall in value.
- Forgetting currency effects when the fund invests abroad.
Risks and limitations
Fund values can fall as well as rise, and you may get back less than you invested. Bond funds carry interest rate and credit risk, and equity funds carry market risk. Funds may suspend dealing in extreme conditions. Rules, tax treatment and investor protections differ by country.
How Brokeli looks at it
In broker research we note whether a platform offers funds, which fund ranges are available, and what dealing fees or platform charges apply. Fund access and costs are taken from published research snapshots, so comparisons rest on documented fee schedules. We treat funds as one product category among stocks, ETFs and others.
Frequently asked questions
What is a mutual fund?
It is a pooled investment in which many investors put money into one fund managed by professionals. The manager invests the pot in a portfolio of assets, and each investor owns units that represent a share of the portfolio.
How is a mutual fund different from an ETF?
Mutual fund units are usually bought and sold once a day at the net asset value, while ETFs trade on an exchange throughout the day at a market price. Costs, minimums and tax treatment can also differ.
What is NAV in a mutual fund?
Net asset value is the fund's total assets minus liabilities, divided by the number of units. It is calculated at the end of each dealing day and is the price at which most investors buy and sell.
What fees do mutual funds charge?
Typical charges include an ongoing fee taken from fund assets, and sometimes entry, exit or performance fees. Platforms may add their own fees. Total cost matters because it is paid every year and compounds over time.
Are mutual funds safe?
They are not guaranteed. Diversification reduces the risk of any single holding failing, but the fund still moves with its markets and can lose value. The risk level depends heavily on what the fund invests in, so read its documents.