Diversification means spreading your money across investments that don't all rise and fall together. The aim isn't to maximise returns in any one year; it's to reduce the chance that a single bad event does lasting damage to your plans.
Why it works
Different parts of the market respond to events differently. When company shares fall sharply, high-quality government bonds have often held their value or risen. Businesses in different countries are affected by different economies. By holding a mix, weakness in one area can be cushioned by stability in another.
Owning many things isn't enough
It's possible to own twenty funds and still not be diversified, if they all hold similar large companies in the same country. What matters is how the underlying investments behave relative to each other — not the number of line items on a statement.
The main building blocks
- Equities (shares): higher long-term growth potential, with larger ups and downs.
- Bonds: typically steadier, providing income and often acting as a shock absorber.
- Cash: stable and accessible, but vulnerable to inflation over long periods.
- Diversifiers: assets such as property or commodities, used in modest amounts.
What diversification can't do
It can't eliminate risk, and it doesn't prevent losses. In severe crises, many assets can fall at the same time. Diversification is about making outcomes less extreme and more survivable — not about avoiding bad years altogether.
