Few debates in personal finance are more consequential — or more settled by evidence — than the question of whether active fund managers add value after their costs. The fund management industry employs thousands of brilliant, highly motivated individuals working with sophisticated technology and vast analytical resources. Yet decades of data across every major market consistently show that most of them fail to outperform a simple index fund after fees are taken into account.
This article examines the active versus passive debate honestly, acknowledges where active management may retain an edge, and helps international investors make informed decisions about where on the spectrum their own portfolio should sit.
What Is Active Fund Management?
An active fund manager selects securities with the aim of generating returns above a benchmark index, net of all costs. They conduct research, form views on individual companies, sectors, or macroeconomic trends, and make portfolio decisions accordingly.
Active managers charge for this work. A typical actively managed global equity fund charges an annual management fee of 0.75–1.5%. On top of the management fee, the fund incurs transaction costs from trading — typically an additional 0.2–0.5% annually for an actively traded equity fund. Total costs often exceed 1% per year.
A passive index fund, by contrast, simply holds the market. An Irish-domiciled UCITS ETF tracking the MSCI World Index can be purchased for as little as 0.10–0.20% per year, all in.
The question is whether active managers justify the additional cost through superior performance.
The Evidence: Comprehensive and Consistent
The evidence on active management is extensive. Key datasets:
S&P SPIVA (Indices Versus Active)
S&P Global's semi-annual SPIVA report is the most comprehensive ongoing study of active versus passive performance. Key findings from the 2025 SPIVA report (covering periods to end 2025):
- 88% of US large-cap active funds underperformed the S&P 500 over 15 years
- 84% of European large-cap equity funds underperformed the MSCI Europe over 15 years
- 78% of UK equity active funds underperformed the S&P United Kingdom BMI over 15 years
- 76% of global emerging market equity funds underperformed the S&P/IFCI Composite over 15 years
- 79% of active investment-grade corporate bond funds underperformed their benchmark over 15 years
The pattern is clear: over long periods, a large majority of active funds in every major category underperform a simple passive equivalent.
Morningstar Active/Passive Barometer
Morningstar's ongoing research adjusts for survivorship bias (closed funds are included) and compares active to passive alternatives in the same category rather than a theoretical index.
The findings are consistent with SPIVA: over a 10-year period, fewer than 25% of active funds in most major categories outperform a passive equivalent in the same category. In some categories — US large-cap growth, global large blend — the figure is closer to 10–15%.
Persistence Studies
Perhaps more damaging to the case for active management is research on persistence: do active managers who outperform in one period continue to do so?
The evidence is clear: they do not. Research by S&P and others consistently shows that top-quartile managers in one period are no more likely than random chance to be top-quartile in the next period. In other words, past performance genuinely is not a reliable guide to future results — at least for active funds.
Why Active Management Struggles: The Economics
Three forces explain why most active managers underperform.
The arithmetic of costs: All investors in aggregate must earn the market return before costs. After costs, active managers — who on average charge more — must earn less. This is arithmetic, not opinion.
The competition effect: Active fund managers compete not just against an index but against each other. The market for active management is populated by the most highly skilled investors in the world. In such an environment, consistently identifying mispricings is extraordinarily difficult. Any genuine inefficiency that can be identified tends to be arbitraged away quickly.
Behavioural costs: Frequent trading is expensive. High turnover generates transaction costs. Many active managers also trade more in response to client flows (buying when clients pour money in, selling when they withdraw), which damages performance through market impact.
Where Active Management May Retain an Edge
The case for passive investing is strong — but not unlimited.
Inefficient markets: Academic finance distinguishes between market efficiency in different segments. Large-cap developed market equities (FTSE 100, S&P 500, Nikkei 225) are intensely researched by thousands of analysts and priced efficiently within narrow margins. Active managers in these markets face the hardest competition.
Small-cap equities, emerging markets, and frontier markets are less efficiently researched. Some academic evidence suggests skilled active managers can identify genuine mispricings in these segments, though the evidence is mixed and transaction costs are also higher.
Fixed income: Active bond management has shown somewhat stronger evidence of persistent outperformance in certain categories, particularly:
- High yield bonds, where credit analysis skill matters
- Emerging market debt
- Short-duration strategies where interest rate positioning adds value
Absolute return and alternatives: These strategies aim not to beat a market index but to generate positive returns regardless of market conditions. Hedge funds, macro strategies, and absolute return funds occupy a different space from long-only equities and cannot be directly compared to index benchmarks.
Private markets: Private equity, private credit, and infrastructure funds have no equivalent passive vehicle. Selecting skilled managers in private markets is an exercise in active selection by necessity.
The Skills That Persist: What the Evidence Actually Shows
The picture on persistence is not entirely bleak for active management.
Research by AQR Capital, Fama and French, and others suggests that some fund characteristics correlate with better long-term performance:
- Low costs: Funds with lower fees outperform funds with higher fees, even within the active universe
- High active share: Funds that hold portfolios very different from their benchmark ("high conviction" managers) show somewhat more evidence of skill than those that closely hug the benchmark ("closet trackers")
- Value-oriented: Funds with disciplined valuation disciplines have shown evidence of outperformance in some periods (though value has also experienced extended periods of underperformance)
- Smaller fund size: Very large active funds find it harder to trade without moving prices; smaller funds can be more nimble
These characteristics do not guarantee outperformance but they narrow the search.
Closet Trackers: The Worst of Both Worlds
A damaging finding from UK and European research is the prevalence of "closet indexing" — active funds that charge active fees but hold portfolios so close to the benchmark that they can barely outperform it even before costs.
Studies suggest a significant minority of funds labelled as "active" have active shares below 60% — meaning more than 60% of the portfolio is effectively the same as the index. These funds provide little chance of genuine outperformance but charge full active fees.
Avoiding closet trackers is one practical implication of the active/passive research: if you are paying for active management, ensure you are actually getting it.
The Practical Conclusion for International Investors
The weight of evidence supports a predominantly passive approach for most investors' core portfolio exposure:
- Market-cap index ETFs for global equity exposure across developed and emerging markets
- Aggregate bond ETFs for fixed income exposure
- REITs or infrastructure ETFs for real asset exposure
For international investors particularly, simplicity has additional value. Managing a portfolio of 15 active funds across multiple jurisdictions, each requiring KYC documents and ongoing monitoring, is burdensome. A portfolio of three to five index ETFs is far easier to manage from Zurich, Singapore, or Dubai.
Where active management may be worth considering:
- Genuinely inefficient markets (certain emerging and frontier equity markets, high yield bonds, private markets)
- Tax-loss harvesting strategies that benefit from active selection within a passive framework (direct indexing)
- Situations where a specific active manager has a genuine, demonstrable edge in a niche area
The Fee Question Is Not Trivial
To illustrate the stakes: suppose you invest £500,000 and earn 7% gross annually for 25 years. Under an active fund structure charging 1.2% annually, your portfolio grows to approximately £2.1 million. Under an index fund structure charging 0.15% annually, your portfolio grows to approximately £2.8 million. The difference — £700,000 — is attributable entirely to the fee gap, assuming identical gross returns. In practice, the active fund would typically earn somewhat less before fees, making the difference larger still.
The compounding effect of costs is one of the most powerful — and most underappreciated — forces in long-term investing.
Compliance Caveats
Past performance is not a reliable indicator of future results. All investments can fall in value as well as rise, and you may receive back less than you invest. The performance data cited in this article relates to historical results across fund categories and does not predict the performance of any specific fund or investment strategy.
This article is for informational purposes and does not constitute personal financial advice. The appropriate balance between active and passive strategies depends on your individual circumstances, tax position, and investment objectives.
How Global Investments Can Help
At Global Investments, we take an evidence-based approach to portfolio construction. We do not believe active or passive is the correct answer in every case — we believe in using the right tool for each segment of the portfolio, with a clear-eyed view of the costs and realistic expectations of the benefits.
Our advisers can review your existing portfolio, identify closet trackers and excessive costs, and construct a more efficient structure appropriate to your circumstances and jurisdiction. Contact us to arrange a portfolio review.
This article is for general information only and does not constitute financial, legal or tax advice. Rules, prices and regulations change; verify current requirements with a qualified adviser before acting.