You Own 10 Funds... But Are You Actually Diversified?
It's a common assumption among investors: if your portfolio holds multiple funds, you must be well diversified. But the reality is often quite different. Owning 10 funds, or even 20, doesn't automatically mean your investments are spread effectively across different assets, sectors, regions, and investment styles.
At GDA Financial Partners, we regularly review portfolios that appear diversified on the surface but, when examined more closely, reveal a surprising level of concentration risk.
The Diversification Illusion
Many investors build their portfolios by adding funds over time. A recommendation from a friend here, a well-performing fund there, perhaps a workplace pension fund alongside a Stocks & Shares ISA.
Before long, they may own a collection of funds from different providers with different names. It looks diversified. However, the underlying investments often tell a different story.
Why Diversification Matters More Than Ever
Recent years have highlighted just how quickly market leadership can change.
For much of the last decade, a relatively small group of large US technology companies drove a significant portion of global stock market returns. Investors who held these companies benefited from exceptional growth, but it also created a situation where many portfolios became increasingly dependent on the fortunes of a handful of businesses.
When markets are rising, concentration risk often goes unnoticed. However, when sentiment shifts, investors can discover that what appeared to be a diversified portfolio is actually heavily reliant on the same themes, sectors, or companies.
Diversification is designed to help protect against this. It ensures that your financial future is not tied too closely to the success or failure of one particular area of the market.
The Difference Between Diversification and Diworsification
There is also a fine balance to be struck.
Adding more investments simply for the sake of it can sometimes lead to what investment professionals refer to as "diworsification" – a situation where a portfolio becomes so complex that it dilutes its strongest opportunities without offering any meaningful reduction in risk.
For example, holding:
Five actively managed global equity funds
Three multi-asset funds
Four different bond funds
may create unnecessary duplication, increased costs, and greater administration without improving overall diversification.
Good diversification is purposeful. Every investment should have a clear role within the portfolio.
Investors should be able to answer questions such as:
Why do I own this fund?
What does it add to my portfolio?
Does it complement my existing investments?
Am I paying for exposure I already have elsewhere?
If the answers are unclear, it may be time for a review.
Diversification and Different Life Stages
The right level of diversification will also depend on your personal circumstances and objectives.
A younger investor with a long investment horizon may be comfortable holding a higher proportion of equities and accepting greater short-term volatility.
Someone approaching retirement may place more emphasis on preserving capital, generating income, and reducing the potential impact of major market downturns.
This is why diversification should never be treated as a one-size-fits-all solution.
Your investment strategy should reflect:
Your financial goals
Your investment timeframe
Your attitude to risk
Your capacity for loss
Your expected income requirements
Two investors with identical portfolios may have very different outcomes because their plans and objectives differ.
A Real-World Example
Consider two investors, each with £250,000 invested.
Investor A owns 12 funds from different providers. However, analysis reveals that over 70% of their equity exposure is concentrated in large US growth companies, with significant overlap across the funds.
Investor B owns just four carefully selected funds. Together, they provide exposure across global equities, bonds, different regions, and a range of investment styles.
Although Investor B owns far fewer funds, their portfolio may actually be the more diversified of the two.
This illustrates an important point: diversification should be measured by exposure, not by fund count.
The Questions Every Investor Should Ask
If you have investments spread across pensions, ISAs, workplace schemes, and other accounts, ask yourself:
Do I know what my underlying holdings are?
Have I unintentionally duplicated investments?
Am I overly exposed to one sector, country, or company?
Is my portfolio still appropriate for my current goals?
When was the last time someone reviewed the overall picture rather than individual accounts in isolation?
For many investors, these questions uncover opportunities to improve efficiency and reduce unnecessary risk.
Bringing It All Together
Effective diversification is one of the cornerstones of successful long-term investing. Yet it is often misunderstood.
Owning multiple funds may create the appearance of safety, but appearances can be deceptive. The real test is understanding how your investments interact and whether they provide genuine diversification across different sources of risk and return.
A portfolio with fewer holdings, carefully selected and regularly reviewed, may provide better diversification than a portfolio filled with dozens of overlapping funds.
The goal is not to own more investments.
The goal is to own the right investments.
This article is for general information only and does not constitute financial advice. Investment values can go down as well as up, and past performance is not a reliable indicator of future results. If you’re unsure what’s best for you, seek independent financial advice.
