Register For Our Mailing List

Register to receive our free weekly newsletter including editorials.

Home / 137

Diversification is the foundation of a solid portfolio

It is well recognised that avoiding large losses is a key element in building wealth. The focus on capital preservation is warranted as heavy losses require very high rates of return to restore the original capital. For example, a 100% gain is required to recoup a 50% loss.

Exhibit 1 shows the annual returns of each of the four major asset classes over a 40-year period. The asset classes are arranged in descending order of return so that the best performing asset class is at the top and the poorest performing asset class is at the bottom. It is clear from the ‘gameboard’ that no single asset class either outperforms or underperforms consistently. The largest recorded annual fall in the 40-year period was property with 55.3%.

So how do we avoid the extreme losses to capital?

Diversifying or spreading investments across multiple asset classes reduces an investment portfolio's overall risk. This is because losses made in one asset class can be offset by gains in others. The benefits of diversification can be seen in Exhibit 2. It illustrates how a diversified multi-asset portfolio (60% growth assets) has performed compared to individual asset classes in the same 40-year period. In 34 years, the diversified portfolio has achieved a return in the top 3 asset classes and in only six periods, the portfolio has produced a return in the second-last ranking asset class. The diversified portfolio is neither the best- nor, more importantly, the worst-performing investment in any given year. The risk of a large loss to capital has been significantly reduced and the overall return is less volatile.

 

Peter Gee is Research Products Manager with Morningstar Australasia. Information provided is for general information only, and individuals should seek personal advice before making investment decisions. The objectives of any individual have not been considered in this article.

  •   3 December 2015
  • 3
  •      
  •   

RELATED ARTICLES

Five fundamental investing lessons

Putting portfolios together when the world is falling apart

Asset allocation in a world of riskier developed markets

banner

Most viewed in recent weeks

Testamentary trusts post-budget: Estate planning, tax reform and the ‘death tax’ debate

Proposed Budget changes to taxation are casting new uncertainty over testamentary trusts, prompting closer scrutiny of estate planning structures and the real implications of reforms still taking shape.

How to minimise tax with a will

Inheritance tax implications in Australia may surprise some, as poor estate planning without proper wills or trusts can lead to costly tax bills and delays for beneficiaries.

High quality businesses are on sale

Beneath the dominance of the ASX's largest stocks, much of the market has been left behind. High-quality companies are now trading at levels rarely seen, offering opportunities for investors willing to look deeper.

Meg on SMSFs: The CGT changes don’t impact super but what about Div 296 tax decisions?

New CGT rules could tip the scales in the super vs non-super debate. For those facing the Division 296 tax, the case for withdrawing has gotten more complex. A "comparison rate" tool may help assess decisions.

The strange effect of the 30% minimum capital gains tax

The 30% minimum tax on capital gains sits at the heart of the budget's proposed reforms. Yet the mechanics reveal anomalies that introduce unexpected distortions that raise questions about its design.

Welcome to Firstlinks Edition 667 with weekend update

The downfall of the giant and three lessons for investors.

  • 18 June 2026

Latest Updates

Latest from Morningstar

Ranking three common retirement strategies

The defining challenge of retirement isn't just about building wealth, it's about converting your lifetime savings into sustainable income. A holistic understanding of different strategies can improve long-term outcomes.

Economy

Was life really better in the good old days?

Are we worse off than previous generations? Lately, there seems to be a heightened level of angst that economic conditions are getting harder and that the two-party political system (and maybe democracy too) is failing voters.

Retirement

Australia has saved $4.5 trillion for retirement. Here's what matters more

Most Australians approaching retirement can tell you the exact dollar value of their super account. But success depends on more than a sizeable balance. Here's four key questions to ask yourself at the start of the financial year. 

Who gains in an AI-supercharged economy?

AI is already reshaping the economy, but companies building transformative technologies rarely capture the greatest long-term value. Instead, those benefits accrue to the users. We may well see this pattern reproduced. 

Taxation

Div 296's million-dollar reset worth $25,000

The 'cost base reset' for the new super tax is being sold as protection for pre-July gains. A worked example shows $1M of protection is worth about $25,000, and the real deadline has not passed.

Latest from Morningstar

The forecasting fix that Wall Street missed

Asking whether markets are overpriced may be the wrong question. New research suggests that traditional valuation metrics used to forecast returns may have been misread. Here are five takeaways for investors.

Investment strategies

Should a fund manager invest their own money differently?

Investors often like the idea that fund managers should invest client money exactly as they invest their own. But reality is more complicated. Unique circumstances make a different approach rational and, at times, beneficial.

Sponsors

Alliances

© 2026 Morningstar, Inc. All rights reserved.

Disclaimer
The data, research and opinions provided here are for information purposes; are not an offer to buy or sell a security; and are not warranted to be correct, complete or accurate. Morningstar, its affiliates, and third-party content providers are not responsible for any investment decisions, damages or losses resulting from, or related to, the data and analyses or their use. To the extent any content is general advice, it has been prepared for clients of Morningstar Australasia Pty Ltd (ABN: 95 090 665 544, AFSL: 240892), without reference to your financial objectives, situation or needs. For more information refer to our Financial Services Guide. You should consider the advice in light of these matters and if applicable, the relevant Product Disclosure Statement before making any decision to invest. Past performance does not necessarily indicate a financial product’s future performance. To obtain advice tailored to your situation, contact a professional financial adviser. Articles are current as at date of publication.
This website contains information and opinions provided by third parties. Inclusion of this information does not necessarily represent Morningstar’s positions, strategies or opinions and should not be considered an endorsement by Morningstar.