Funds vs single shares: what you own and what you pay

A mutual fund pools money from many people, and a regulated manager invests it for them, so one purchase gives you a slice of many holdings. A single share is a piece of one company, so its fate is your fate. Funds trade control for spread-out risk and simplicity, and you pay a yearly fee for that.

What you actually own

When you buy shares, you own part of one business. You choose when to buy and sell, you receive any dividend it pays, and you carry all of its risk.

When you buy a fund, you own units (also called shares of the fund). Each unit is a slice of everything the fund holds: hundreds of shares, or bills and bonds. The manager decides what to buy within the rules in the fund's prospectus. The assets are usually held by a separate custodian, not by the manager.

Fund types and what they hold

An index fund doesn't try to beat the market; it copies it. That usually means lower costs and fewer surprises about what you hold. Most ETFs are index funds wrapped in a form you can buy and sell during the trading day.

NAV: the price of a unit

A fund's NAV (net asset value) per unit is its holdings minus what it owes, divided by the units in issue. Most mutual funds work it out once each business day.

Example: a fund holds $200 million of assets and owes $1 million in fees and other costs. It has 10 million units. NAV = (200 − 1) ÷ 10 = $19.90 a unit.

Buying and selling

1. Mutual funds: you buy at the next NAV calculated after your order, not today's last price. With $5,000 at a NAV of $19.90, you'd get about 251 units.
2. ETFs: you buy and sell through a brokerage account at the market price, which can sit slightly above or below NAV. You also pay the bid-ask spread.
3. Selling a mutual fund: you redeem units back to the fund at the next NAV, minus any exit fee, and receive cash after the settlement days in the prospectus.

Ask for the minimum investment, dealing days and settlement time. They vary from fund to fund.

Fees and why small gaps compound

The expense ratio is the fund's total yearly running cost as a percentage of assets. It includes the management fee and is taken out of the NAV, so you never see a bill. Other possible charges:

• Sales charges when you buy or sell.
• Performance fees, a share of returns above a target.
• Trading costs inside the fund, which aren't in the expense ratio.

What funds charged on average

The Investment Company Institute (ICI) publishes asset-weighted averages for US funds. These are for 2025, from its March 2026 report:

Asset-weighted means big, cheap funds pull the average down. Many individual funds charge far more, so read each fund's own figure.

Worked example: 0.05% vs 0.64% a year

Say you invest $10,000 and the fund's holdings earn 7% a year before fees. These are example inputs, not forecasts; the fees are the 2025 averages above.

Check: 10,000 × 1.0695^30 = 75,063, and 10,000 × 1.0636^30 = 63,584. A gap of under 0.6 points costs about 15% of your ending value after 30 years.

Remember inflation too. Your real return is what's left after fees and price rises.

Try it with your numbersInvestment GrowthSee how investing a fixed amount every month could grow your wealth over time.

Diversification: the main reason funds exist

Diversification means spreading money across many holdings so one failure can't sink you.

Example: you put $5,000 into one company's shares and it falls 60%. You now have $2,000. If the same company were 3% of a fund, that fall alone would cost the fund about 1.8%, all else equal.

Diversification limits damage from one company. It does not protect you when the whole market falls: an equity fund drops with the market.

How to read a fund factsheet

A factsheet is a short monthly or quarterly summary. The prospectus has the full rules. Look for:

Past returns don't predict future returns. A fund that beat its benchmark once may not again, and a short record says little.

How to check a manager is regulated

Every country with a fund industry has a securities or financial regulator that licenses managers and approves funds sold to the public.

1. Find your regulator. It is usually your country's securities commission or financial conduct authority.
2. Search its public register for the manager's exact legal name and the fund's name.
3. Check warning lists. IOSCO's I-SCAN portal, launched in March 2025, collects alerts from over 150 regulators about unlicensed firms.
4. Match the details. Names, addresses and websites should match the register exactly.
5. Be wary of anyone promising fixed high returns from shares, or asking you to pay into a personal account.

Equity and index funds: what to expect

Equity funds hold shares chosen by a manager. Index funds copy an index. Both rise and fall with the market and suit money you won't need for five years or more.

• Long run. From 1928 to 2025, the S&P 500, a US large-company index, returned about 10.0% a year with dividends reinvested (NYU Stern, January 2026).
• Deep falls. The MSCI ACWI, a world index, fell 58.38% from October 2007 to March 2009, its worst fall on its 30 September 2026 factsheet. A fund tracking it would have fallen about as much, plus fees.
• Funds of one type differ in holdings, fees and size. Compare factsheets, not just one return.

Money market and bond funds: lower risk, not no risk

• Interest-rate risk. When rates rise, existing bond prices fall, so a bond fund's NAV can drop. Longer bonds fall more.
• Credit risk. A borrower may pay late or not at all.
• Redemption timing. Cash may take days to arrive.
• No guarantee. A fund is not a bank deposit, and its return can change.

Funds vs single shares at a glance

Your plan

1. Get the basics in place first. Keep an emergency fund in cash or a money market fund, and pay off expensive debt.
2. Match the fund type to the time frame. Money needed within a year suits money market; money for 5+ years can consider equity or index.
3. Shortlist by type and cost, not last year's return. Compare two or three funds of the same type.
4. Read each factsheet and prospectus. Write down every fee and add them up.
5. Check the manager on your regulator's register and on I-SCAN.
6. Start small and add monthly. Buying at different NAVs smooths your average price; this is dollar-cost averaging.
7. Review once a year. Compare after-fee returns with the benchmark over the same dates.

What to watch out for

• Chasing last year's winner. Top performers often don't repeat.
• Fees you didn't add up. Several small fees can total more than you expect.
• Mixing up types. An equity fund can fall by half; it is not a savings account.
• Unlicensed sellers on social media promising returns.
• ETF trading costs. Frequent buying and selling adds spreads and commissions.

This guide is for education only. It is not advice to buy or sell any fund or share.