Diversification: Why You Shouldn't Put All Your Eggs in One Basket

Diversification is one of the most important principles in investing. It is often described as not putting all your eggs in one basket. The idea is simple: spread your investments so that your future does not depend too heavily on one company, sector, country or asset class.

The purpose of diversification is not necessarily to increase returns. Its main purpose is to reduce the risk that one poor outcome causes serious damage to the whole portfolio. Different investments react differently to the same event. A shock that hurts one industry may benefit another. A period that is difficult for shares may be less difficult for bonds or cash.

This matters because the future is uncertain. No investor can know with confidence which asset class, company or country will perform best next year. Diversification acknowledges that uncertainty and builds a portfolio to cope with a range of possible outcomes.

Diversification can happen in several ways. Investors can spread money across asset classes, such as shares, bonds, property and cash. Within shares, they can diversify across sectors such as healthcare, technology, infrastructure and consumer goods. They can also invest across geographies, rather than relying solely on one local market.

A diversified portfolio will not avoid losses altogether. During broad market downturns, many investments can fall at the same time. But diversification can help reduce volatility and make the investment journey less bumpy. That can be valuable because investors are more likely to stay disciplined when the ride is manageable.

For new investors, diversification is a practical form of humility. It recognises that no one gets every call right. Rather than trying to identify the single best investment, a diversified approach builds resilience. It gives investors a better chance of participating in long-term growth while reducing the impact of inevitable surprises along the way.

Diversification also needs maintenance. Over time, some investments will grow faster than others, which can change the shape of the portfolio. Periodic rebalancing helps bring the portfolio back towards its intended risk level. This discipline can stop yesterday's winners from quietly becoming tomorrow's concentration risk.

This article is general in nature, has been prepared in good faith, and should not be regarded as financial advice.

To talk investment - either for yourself or the region – get in touch with us at Forsyth Barr Investment Advice Central Otago on 03 443 2980.