Choosing a Multi-Asset Fund — What the Alternatives Really Offer

The rise of the multi-asset fund has transformed how individuals invest. Instead of constructing a portfolio from individual funds across equities, bonds, and alternatives, investors can now buy a single fund that does all of this — diversified globally, managed professionally, and rebalanced automatically. The concept is elegant. The practical challenge is navigating a crowded market of options, each making similar promises but with meaningfully different philosophies, costs, and long-term outcomes.

This guide examines the main categories of multi-asset fund available to UK and internationally mobile investors, what distinguishes them, and how to match the right option to your risk profile and financial goals.

What is a multi-asset fund?

A multi-asset fund holds a diversified mix of equities, bonds, and potentially property and other alternatives within a single UCITS wrapper. The investor buys one fund and receives a complete portfolio. The most common formats are:

• Growth (approximately 80% equities, 20% bonds): for investors with long time horizons and higher risk tolerance.
• Balanced (approximately 60% equities, 40% bonds): the classic "60/40" portfolio, designed for medium risk.
• Cautious (approximately 40% equities, 60% bonds): for investors closer to retirement or with lower risk tolerance.

Within these broad categories lie considerable variation in how the equity and bond components are constructed, whether active or passive management is used, what alternatives are included, and what the total cost is.

The Vanguard LifeStrategy range

The Vanguard LifeStrategy funds are the dominant multi-asset offering in the UK retail market. Available in five equity weightings (20%, 40%, 60%, 80%, and 100%), they offer a complete solution from cautious to pure equity exposure. The ongoing charges figure (OCF) is a flat 0.22% across the range — among the lowest available for a genuinely diversified multi-asset fund.

The underlying strategy is systematic and index-tracking. Each LifeStrategy fund invests in a basket of Vanguard index funds covering global equities and global bonds, weighted by market capitalisation with a modest "home bias" tilt toward the UK. There is no active stock selection, no tactical asset allocation, and no attempt to time markets.

The long-term performance of the LifeStrategy range has been strong for the cost, particularly for growth-oriented investors. The main criticism is the UK equity overweight (LifeStrategy 100%, for instance, holds approximately 25% in UK equities versus the UK's roughly 4% share of global market capitalisation), which has been a headwind given the UK market's underperformance of global equities over the past decade. Some investors prefer the Vanguard FTSE All-World ETF (entirely market-cap weighted, no home bias) as an alternative.

Dimensional Fund Advisors (DFA)

Dimensional Fund Advisors occupies a distinctive position between pure passive indexing and active management. DFA's approach is rooted in academic financial research — the founders include Nobel laureates Eugene Fama and Kenneth French — and tilts portfolios toward the small-cap and value "factors" that academic evidence suggests generate a long-run return premium.

In practical terms, DFA funds hold more small-cap stocks and more value stocks than a cap-weighted index fund, while maintaining very broad diversification and low turnover. The charges are modestly higher than Vanguard — typically 0.25–0.55% depending on the fund — but meaningfully lower than active management.

DFA distributes primarily through specialist financial advisers who have been trained in the DFA philosophy. Direct retail access is limited, which means this option is typically available only through an advice relationship. For investors willing to engage with a fee-based adviser, DFA's evidence-based approach and factor tilts have a strong intellectual foundation, though the realised performance premium has been variable across periods.

Multi-asset income funds

For investors who require current income — retirees drawing from capital, or investors seeking dividend income — the growth-oriented LifeStrategy structure is less suited. Multi-asset income funds are designed to deliver a regular income distribution while maintaining capital value.

Key options in this space include:

• Baillie Gifford Managed Fund: a long-established multi-asset fund with a bias toward growth equities and bonds; income approximately 2%.
• M&G Optimal Income Fund: actively managed; the manager has broad latitude to allocate between corporate bonds, government bonds, and equities as conditions change; income approximately 3–4%.
• City of London Investment Trust: a long-established listed investment trust (founded in the 1890s) with around 60 consecutive years of rising dividends — one of the longest such records of any UK investment trust; predominantly UK equities; income approximately 4.5%.

The income level varies significantly — from 2% for growth-oriented balanced funds to 5%+ for high-yield focused alternatives — and is directly linked to the risk taken to generate that income. Higher headline yields typically involve either higher credit risk (in fixed income) or higher equity concentration risk.

The "blended" active-passive approach

A growing segment of the market offers portfolios that blend passive index funds with a modest active management overlay. These include:

AJ Bell Passive Funds: available via the AJ Bell platform; low-cost (OCF approximately 0.10–0.15%); purely passive implementation across multiple risk levels.

Nutmeg (now JP Morgan Wealth Management): an online discretionary management service that constructs portfolios from ETFs based on a risk questionnaire; OCF approximately 0.25–0.45% for the managed portfolios; adds an active tactical overlay above the strategic index allocation.

Target-date funds (lifecycle funds): widely used in US 401(k) schemes and growing in UK DC pension defaults, these funds automatically shift the equity/bond ratio as the target retirement date approaches — starting equity-heavy for a 30-year-old and progressively de-risking as they approach retirement. The automation removes the need for the investor to manually adjust risk over time.

Matching risk profile to fund choice

The key question is not "which multi-asset fund is best" — no universally correct answer exists — but "which risk profile and structure suits this investor at this stage of their life?"

A 35-year-old accumulating wealth for retirement, with a 30-year investment horizon, can sustain significant short-term volatility. A LifeStrategy 80% or 100% equity fund, a Vanguard FTSE All-World ETF, or a DFA global equity solution are all appropriate. The priority is keeping costs low and remaining invested through market cycles.

A 65-year-old in early retirement, drawing income from the portfolio, has a very different profile. The sequence-of-returns risk — the danger that a major market fall early in retirement permanently depletes the portfolio before it can recover — argues for a more cautious allocation (50–60% equities) combined with a cash buffer (one to two years' income in cash or money market funds). A multi-asset income fund with genuine diversification and a sustainable yield is more appropriate than a pure equity growth fund.

The advice-driven versus platform-driven choice also matters. Investors working with a financial adviser typically use bespoke portfolios or carefully selected managed funds, with the adviser providing ongoing rebalancing, tax planning, and behavioural coaching. Direct investors (DIY) typically default to the LifeStrategy range or similar low-cost solutions — a rational choice if the investor has the knowledge and discipline to stay the course.

The cost imperative

Across all fund categories, charges erode long-run returns compoundly. A difference of 0.5% per year in charges, sustained over 30 years, reduces a £500,000 portfolio's terminal value by approximately £150,000–£200,000 depending on growth assumptions. The mathematical case for minimising charges — particularly in the passive or near-passive space — is overwhelming.

Total costs to consider include: the fund's OCF; the platform administration charge; any adviser fee; and transaction costs (bid-offer spreads, stamp duty). The all-in cost for a self-directed investor using a low-cost platform and the LifeStrategy range might be 0.35–0.40% per year. For an advised client using active funds, the same figure might be 1.5–2.5%.

Compliance note

This guide is for informational purposes only and does not constitute personal financial or investment advice. Investments can fall in value as well as rise. Past performance of specific funds does not guarantee future results. Fund charges, risk profiles, and available options change over time. Tax treatment depends on individual circumstances and may change. Always seek qualified independent financial advice before making investment decisions.

How Global Investments can help

Our advisory team works with clients at every level of portfolio complexity — from those beginning with a simple multi-asset fund wrapper to those managing multi-million-pound portfolios across multiple platforms and jurisdictions. We help clients assess the real total cost of their current arrangements, evaluate whether the risk profile of their multi-asset holdings matches their actual financial position, and identify where a more bespoke or internationally diversified approach would deliver better long-term outcomes. Contact us to discuss your current portfolio structure.