What a mutual fund is

A mutual fund (in the UK, often structured as a unit trust or OEIC) pools money from many investors and is managed by a fund manager who actively decides what to buy and sell, aiming to outperform a benchmark or achieve a specific objective — income, growth, or a particular sector or region.

Active vs passive

Unlike index funds, which passively track a market, mutual funds are typically actively managed — a real person or team makes ongoing investment decisions. This comes with higher fees to pay for that research and management, and no guarantee the fund will beat a simple index tracker; evidence consistently shows most actively managed funds underperform their benchmark over the long run, after fees, though some do outperform, especially in less efficient or specialist markets.

What to check before investing

  • Ongoing charges figure (OCF): the fund's total annual cost — compare this against similar funds and against low-cost index alternatives.
  • Track record: how has it performed against its stated benchmark over 5–10 years, not just the last year?
  • Manager consistency: has the same manager or team been in place throughout that track record, or has performance history followed someone who has since left?
  • What it actually invests in: read the fund's stated objective and top holdings — "growth" or "income" labels don't always tell the full story.

Where they can make sense

Actively managed funds are sometimes considered for specialist areas where genuine skill or local knowledge may add value — smaller companies, less-covered emerging markets, or specific strategies not easily replicated by a simple index. For core, broad market exposure, many investors default to low-cost index funds instead, using active funds selectively rather than as the default choice.

Key takeaways

  • Mutual funds are typically actively managed, aiming to beat the market rather than track it.
  • Higher fees are the norm, and most active funds underperform their benchmark after costs over time.
  • Check the ongoing charges figure and long-term track record before investing.
  • Some investors use active funds selectively for specialist areas, alongside low-cost core holdings.