ETFs vs Active Funds: The Evidence and a Pragmatic Approach

Few debates in personal finance are as consequential — or as consistently misunderstood — as the question of whether to use ETFs or actively managed funds. The financial industry has a strong commercial incentive to promote active management: active funds generate far higher fee revenue than index trackers. Individual investors, by contrast, have an equally strong financial incentive to use the cheapest option that delivers good risk-adjusted returns.

The evidence on this question has been accumulating for decades, and it is remarkably consistent. Understanding that evidence — and the nuances within it — is essential for building an investment portfolio that is positioned to succeed over the long term.

The Performance Evidence

The most comprehensive ongoing analysis of active versus passive fund performance is the S&P SPIVA (S&P Indices Versus Active) scorecard, published semi-annually. The data cover decades and encompass tens of thousands of fund observations across multiple markets. The headline findings are stark:

US large-cap equities: Over a 10-year period, approximately 85–92% of active large-cap US equity fund managers underperform the S&P 500 after fees. The number varies slightly by year and specific benchmark, but the direction and magnitude are remarkably stable across time.

European and UK equities: Active management performs somewhat better in European and UK markets — perhaps 60–70% underperform over 10 years — but the majority still fail to beat their benchmark.

Emerging markets: Active managers do slightly better than in developed large-cap markets, with perhaps 55–65% underperforming over 10 years. There is more genuine information inefficiency in emerging markets, providing more room for skill to express itself.

Small-cap equities: Among the better environments for active management, with closer to half of managers outperforming in some markets over long periods. Small companies receive less analyst coverage, creating more pricing inefficiencies.

Fixed income: Results are mixed. Active credit managers can add meaningful value through security selection. But government bond active managers rarely justify their fees relative to a simple index approach.

Why Active Often Fails: The Cost Problem

The most important — and most frequently underestimated — reason for active underperformance is cost. Active management is expensive:

• Actively managed UK equity funds typically charge 0.50–1.00% per year in ongoing charges.
• Some active funds charge 1.00–1.50%, particularly those marketed through financial intermediaries.
• ETFs tracking the same markets typically charge 0.05–0.20% per year.

The cost differential must be recovered through investment skill. A fund manager who charges 0.75% more than an ETF tracking the same benchmark must outperform that benchmark by 0.75% per year, every year, just to break even for the investor.

This is harder than it sounds. Most managers cannot consistently identify market inefficiencies with sufficient precision to generate this level of excess return after costs. The few who can are extremely difficult to identify in advance — skill and luck are hard to distinguish from limited historical data.

Turnover costs add to the problem. Actively managed funds typically buy and sell holdings much more frequently than passive ETFs. Each transaction involves bid-ask spreads and market impact costs that reduce returns without appearing in the stated ongoing charges figure. Total transaction costs for active funds can add 0.2–0.5% or more annually.

Survivorship bias flatters the industry. Performance databases only include funds that survived. Poorly performing funds are closed or merged, removing their performance from the record. This means the average published track record for active managers is better than the true average — because the worst outcomes have been erased.

Where Active Management Can Add Value

The evidence for passive does not mean active management is universally wrong. There are specific areas where skilled active management can genuinely justify its cost:

Smaller companies. Small and micro-cap companies receive far less analyst coverage than large-caps. Information is less available and pricing less efficient. A skilled small-cap manager with deep research capability can genuinely identify mispriced companies. This is especially true in less-covered markets (UK small-cap, Asian small-cap, frontier markets).

Emerging markets. Information asymmetry is greater, company disclosure is lower quality, and market microstructure is more complex. A manager with local expertise, established company relationships, and strong governance analysis can add value that a pure index approach cannot capture. Corporate governance and political risk screening — not captured by market-cap-weighted indices — can be particularly valuable.

Active credit selection in fixed income. Bond markets contain a huge universe of corporate issuers, many of which receive limited coverage. An active credit manager who can identify mispriced bonds — particularly in investment-grade and high-yield corporate credit — can generate meaningful excess return. Government bond active management is harder to justify, but corporate credit active management has a better evidence base.

Absolute return and multi-asset. Strategies that aim to generate positive returns regardless of market direction — through short-selling, options, or cross-asset positioning — are inherently active. They cannot be replicated by a passive index, which can only go long the market. The challenge is identifying the relatively small number of managers with genuine skill in this area.

ESG and sustainability integration. Active managers who genuinely integrate environmental, social, and governance analysis — rather than simply applying exclusion screens — may identify companies better positioned for the energy transition and regulatory change. A quality ESG-integrated active fund can add value that a purely mechanical ESG index cannot always capture.

The Pragmatic Approach: Passive Core, Active Satellite

The investment case for combining passive and active is straightforward:

Use passive index ETFs for asset classes and markets where the evidence for active management is weakest. These are:

• US large-cap equities
• Developed market large-cap equities broadly
• Government bonds (gilts, Treasuries, Bunds)
• Broad market commodity ETFs

Use active management selectively for asset classes and markets where the evidence for skill is stronger:

• Smaller companies in any market
• Emerging markets (with careful manager selection)
• Investment-grade and high-yield credit
• Absolute return strategies
• Specialist themes requiring active governance assessment

A practical split for a diversified international portfolio might be:

• 70–80% of equity exposure: low-cost passive ETFs covering developed market large-cap
• 20–30% of equity exposure: actively managed smaller company, emerging market, or specialist strategies
• Core fixed income: passive government bond ETFs
• Credit and income: active bond funds where manager skill is better evidenced

Factor ETFs: The Middle Ground

Factor ETFs — also called smart beta — sit between pure passive and active management. They use systematic, rules-based methodologies to tilt toward specific return factors:

• Value: Buying shares that are cheap relative to fundamentals (price-to-book, price-to-earnings)
• Momentum: Buying shares that have risen recently and selling those that have fallen
• Quality: Tilting toward companies with strong balance sheets and high return on equity
• Low volatility: Overweighting lower-volatility shares
• Small size: Tilting toward smaller companies within an index

The academic evidence for these factors is reasonably strong over long periods, though individual factors can underperform for extended periods. Factor ETFs cost more than pure passive trackers (typically 0.15–0.40%) but significantly less than active funds.

For investors who want to go beyond the simplest passive approach without paying full active management fees, factor ETFs provide a credible middle ground. Combining factor tilts — for example, a quality factor ETF alongside a momentum ETF — can create a genuinely diversified, systematic approach.

What to Look For When Choosing

For passive ETFs:

• Total expense ratio: The lower the better. For major indices, fees below 0.15% are achievable.
• Tracking difference: The actual performance gap between the ETF and its index (not the same as the stated fee).
• Liquidity: Trading volume and assets under management. Large, liquid ETFs are safer and cheaper to trade.
• Domicile: Irish-domiciled ETFs are generally most tax-efficient for European investors.

For active funds:

• Long track record through multiple environments: At least five years, ideally ten.
• Consistent outperformance after costs versus benchmark: Not just headline performance, but risk-adjusted outperformance.
• Manager tenure and stability: A track record built by a departed manager tells you little about the future.
• Transparency of investment process: A clear, repeatable process is more likely to be genuine than vague claims of "stock-picking skill."
• Sensible active share: A very high degree of overlap with the index (low active share) suggests closet benchmark-hugging. Genuine active funds should look meaningfully different from the index.

How Global Investments Can Help

At Global Investments, we evaluate fund selection across the full passive-to-active spectrum, using evidence-based criteria to identify where active management genuinely justifies its cost and where passive ETFs are the superior choice.

We have no commercial relationship with any fund manager or platform that would incentivise us to recommend active management when passive is more appropriate. Our fund selection is driven entirely by what is right for your investment objectives and risk profile.

Please note that all investments carry risk. Past fund performance is not a reliable guide to future returns. The value of your investments can fall as well as rise. This guide is for information purposes only and does not constitute personalised financial advice. Always seek professional advice relevant to your specific circumstances.