Where returns come from
Equity returns have two sources. Keeping them apart makes most investing commentary easier to read.
| Source | What it is |
|---|---|
| Capital growth | The price rising above what you paid. Unrealized until you sell: a gain on screen is not money until the trade settles, and it can disappear before you act on it. |
| Income (dividends) | A share of profits paid out, typically quarterly or semi-annually. Not promised — dividends can be cut or stopped outright, and often are exactly when a company is struggling. |
Total return combines the two. Comparing investments on price movement alone understates the one that pays income, which is why long-run index comparisons are quoted on a total-return basis with dividends reinvested.
A share can fall to zero if the company fails. Shareholders rank last in an insolvency, which in practice usually means they recover nothing. Past performance does not indicate future results.
Funds, ETFs and index funds
A fund pools money from many investors and holds a basket of underlying assets. One unit buys a slice of everything in the basket — the cheapest diversification available to a private investor.
| Type | How it behaves |
|---|---|
| Index fund | Tracks a published index mechanically. No manager is trying to beat the market, so costs are low. You receive the index's return less fees — and the whole of its falls. |
| Active fund | A manager selects holdings to beat a benchmark. Higher fees, and the outcome rests on the manager. Sustained outperformance after fees is historically uncommon. |
| ETF | A fund that trades on an exchange through the day like a share. Index-tracking or active. You pay the bid-ask spread as well as the fund's own charges. |
| Mutual fund / OEIC | Priced once a day at a single valuation point rather than traded continuously. No spread to pay, but no choice of execution moment either. |
What an index fund does not do
Tracking an index removes the risk of picking the wrong company. It does not remove market risk: when the index falls, the fund falls with it, by design. Nor does it deliver diversification in the way people assume. Many large indices weight by company size, so a handful of very large companies can dominate the return of a fund holding hundreds of names.
The S&P 500 ETF in the holdings list has exactly this structure.
What fees really cost
Fees are the one variable in investing you can know in advance, which is reason enough to read them closely. They compound against you exactly as returns compound for you.
- The ongoing charge
An annual percentage of your holding, deducted from the fund rather than billed to you. Being invisible, it is easy to ignore; being charged on the whole balance each year, it grows as the investment grows.
- Platform or custody fees
What the broker charges to hold the account, sometimes a percentage and sometimes flat. On a large balance a flat fee is usually cheaper; on a small one, the reverse.
- Transaction costs
Commission where charged, plus the bid-ask spread on every purchase and sale. Frequent trading multiplies this quietly.
- Currency conversion
Paid on the way in and the way out for assets priced in another currency, and often larger than the headline commission.
A fee is charged on the balance, so it comes out of the amount that would otherwise have compounded. Over a multi-decade horizon, the gap between a low-cost and a high-cost fund can take a substantial share of the final value — without the high-cost fund having performed any worse before fees.
Dividends, splits and corporate actions
- Dividends. Paid to whoever holds the share on the record date. The price typically falls by about the dividend amount when it goes ex-dividend, so buying just before a payment creates no free money.
- Stock splits. The share count rises and the price falls proportionally. You own the same fraction of the same company; nothing of value has changed.
- Rights issues. The company offers existing holders new shares, usually at a discount. Ignoring one dilutes your stake, and they carry deadlines.
- Mergers and takeovers. Your holding may convert into cash, into shares in the acquirer, or into a mix. Some require an election by a set date.
- Delisting. A share removed from an exchange can become very hard to sell at any price.
Corporate actions carry deadlines and are easy to miss. Notices go to the address and email on the account record, so keeping those current is part of holding shares. Where a holding sits in nominee name, the notice reaches you through the broker rather than the company's registrar, and the broker's internal deadline usually falls a little earlier.
Documents worth reading before you buy a fund
- The factsheet — the stated objective, the benchmark it is measured against, and the largest holdings. The top ten tells you most of what you need about concentration.
- The key information document — the ongoing charge, the risk indicator and the recommended holding period, in a format regulators require to be comparable across funds.
- The prospectus — long, and the one place where any power to suspend redemptions or to borrow within the fund is disclosed.
Frequently asked questions
Is an index fund safer than individual shares?
It removes most company-specific risk, which is a genuine improvement. It does not remove market risk — if the index falls, the fund falls with it.
Why did the price drop right after a dividend was announced?
On the ex-dividend date the price typically falls by about the dividend amount, because new buyers no longer receive that payment. Your total position is largely unchanged.
How many funds should I hold?
There is no universal answer. Holding several funds that track similar indices adds names without adding diversification, so look through to the underlying exposure rather than counting fund labels.
What is the difference between an ETF and a mutual fund tracking the same index?
The holdings can be near identical; the trading mechanics are not. An ETF trades on an exchange through the day, so you choose your moment and pay the bid-ask spread. A mutual fund prices once a day at a single valuation point, so there is no spread to pay but no choice of execution moment either.
Does an ongoing charge get billed to me?
No, which is why it is easy to overlook. It is deducted from the fund's assets, so it shows up as a slightly lower return rather than as a payment you make. The key information document states the figure.
