Index funds vs individual stocks: which suits you?

Index funds vs individual stocks at a glance

Index funds vs individual stocks is really a question about how much risk, time and effort you want to take on. An index fund copies an index, which is a public list of companies chosen by set rules. Many index funds are ETFs (exchange-traded funds), which you buy on a stock exchange like a share. An individual stock is a share in one company that you choose yourself.

Diversification: why it matters so much

Diversification means spreading your money so that no single company can do serious damage.

The S&P 500 index, for example, held 503 share lines from 500 companies as of July 2026, according to S&P Dow Jones Indices. If you split €1,000 evenly across 20 stocks, each is 5% of your money. If one of them halves, your portfolio loses 2.5%. If you owned only that one stock, you'd lose 50%.

Index funds aren't perfectly spread, though. Most weight each company by its size, so the biggest firms take a large share. In the S&P 500, the 10 largest companies made up 37.6% of the index in July 2026. Our guide to the S&P 500 explains this concentration in more detail.

Costs: small numbers that add up

With an index fund, you pay a yearly fund fee, called the TER (total expense ratio), taken from the fund automatically. With individual stocks there's no fund fee, but every purchase and sale may carry a trading fee, and buying shares in another currency can add a conversion fee.

If you compare an index fund with an actively managed fund, where a manager picks stocks for you, the yearly fee gap is often bigger. Our ETF guide shows how a 0.2% fee and a 1.5% fee compare over 20 years.

The evidence: most stock pickers trail the index

S&P Dow Jones Indices publishes SPIVA reports, which compare actively managed funds with the index they're trying to beat. The results for US large-company funds against the S&P 500, as of 30 June 2025:

These are professionals with research teams, data and years of experience. It doesn't mean nobody beats the market. It means that over long periods, few do it consistently, and it's hard to know in advance who they'll be. S&P also publishes SPIVA reports for other regions, including Europe.

The same logic applies to your own picks. Beating an index after costs requires you to choose better than the professionals on the other side of your trades, year after year.

Who each option suits

An index fund may suit you if:

• You want a simple, low-cost way to own a wide slice of the market.
• You don't want to spend hours researching companies.
• You're happy to get roughly the market's return rather than trying to beat it.

It may not suit you if you want to choose exactly which companies you own, for example for ethical reasons, though some index funds exclude certain sectors.

Individual stocks may suit you if:

• You enjoy researching businesses and reading annual reports.
• You understand you might do worse than the index, and accept that.
• You're investing a small part of your money and can afford mistakes.

They may not suit you if you're starting out, don't have much time, or would feel tempted to buy and sell on news headlines.

A middle path: core and satellite

You don't have to pick one side. Some investors use a core and satellite approach: most of the money goes into one or two broad index funds (the core), and a small, fixed share goes into individual stocks they want to follow (the satellites).

This limits the damage any single pick can do while still letting you learn about companies. If your satellites do badly, the core carries on. If they do well, you've had the satisfaction without betting everything on it.

If you try this, decide the share in advance and write it down. It's easy to let a winning stock grow into a much bigger part of your money than you ever planned, which quietly brings back the concentration risk you were trying to avoid.

Common mistakes

• Owning a few stocks and calling it diversified. Five tech companies are still one bet.
• Chasing last year's winners. Shares that soared recently attract attention, not guaranteed future gains.
• Trading too often. Every trade costs money and creates a chance to get the timing wrong.
• Ignoring overlap. Owning an S&P 500 fund and the same big US companies separately means you hold more of them than you think.
• Judging a strategy on one year. The SPIVA data shows how different one year can look from 20.

Want the full picture of how to get started? Our guide to investing for beginners covers the steps from emergency fund to first investment.