Cautious core: global equity with real bond ballast

About the cautious core portfolio

The cautious core portfolio is a 60/40 blend of broad global equity and hedged global investment-grade bonds. It is built for investors who want a single, simple model that is easier to hold through equity drawdowns — without pretending the bond sleeve is optional. The portfolio is not a recommendation; it is one illustration of how the building blocks on this site can be combined into a balanced default for a UK investor.

Holdings and weights

• 60% Vanguard FTSE All-World UCITS ETF (VWRP) — the equity core. Around 3,700 holdings spanning developed and emerging markets, accumulating share class so dividends are reinvested automatically inside an ISA or SIPP. Ongoing charges roughly 0.22%.
• 40% iShares Core Global Aggregate Bond UCITS ETF GBP Hedged (AGGU) — the ballast sleeve. Investment-grade global government and corporate bonds, hedged to sterling so currency movement does not amplify the bond return. Ongoing charges roughly 0.10%.

What the portfolio is trying to do

The equity sleeve provides long-term growth and broad geographic diversification. The bond sleeve cushions equity drawdowns and provides a source of rebalancing capital when equities fall sharply. The currency hedge on the bond sleeve removes a major source of volatility that can otherwise undermine the very ballast effect that bonds are meant to provide.

Who this is for

Investors with a long horizon (ten years plus) who do not want maximum equity risk and who would rather sit through a 30%+ equity fall holding a balanced portfolio than a 100% equity portfolio. The 60/40 ratio is a starting point, not a target. Younger investors with longer horizons may prefer 80/20; investors closer to drawdown may prefer 40/60.

Who should look elsewhere

If you already know you want maximum long-term equity exposure and minimal ballast, see the one-fund global portfolio. If you need cashflow in retirement, see the income tilt portfolio or the drawdown portfolio guide.

Tax wrappers

Both holdings are UCITS ETFs domiciled in Ireland and listed on the London Stock Exchange in GBP, which means they are eligible for ISAs, Junior ISAs, SIPPs, and General Investment Accounts. Holding them inside an ISA or SIPP shelters dividends and capital gains from UK tax. Outside a wrapper, dividend tax and capital gains tax can apply — see the ISA vs GIA guide for how the choice affects long-term return.

Rebalancing

An annual rebalance back to 60/40 is usually sufficient. Threshold-based rebalancing (for example, only rebalancing when the equity weight drifts more than five percentage points away from target) can reduce trading and dealing costs. Rebalancing inside an ISA or SIPP is tax-free; in a GIA, rebalancing trades can trigger capital gains.

Key risks

Both equities and bonds can fall in value, and they sometimes fall together — 2022 was a recent example. Past performance is not a guide to future returns. The currency hedge on the bond sleeve protects against currency volatility, not credit risk or interest-rate risk. The portfolio has no UK-specific tilt; if you want a UK-listed equity overweight or a gilt-only ballast sleeve, see the best bond ETFs guide.

Educational content only. Not financial advice. Investment values can fall as well as rise, and you may not get back what you invested. ETF holdings, charges, and weights are illustrative and may change. Always check current factsheets and consider your own circumstances before investing.

Portfolio summary

Portfolio analytics

Holdings

What a cautious core portfolio is really doing

A cautious, or lower-risk, core portfolio is built around a simple idea: keep a global equity engine for long-term growth, but surround it with enough bond and cash ballast that the whole thing is bearable to hold when markets fall. The equity sleeve still does the heavy lifting on returns; the defensive sleeve is there to soften the falls and, crucially, to give you something stable to sell from when you rebalance into cheaper equities. The word "cautious" describes the ride, not a guarantee — a balanced portfolio still falls in a bad year, just less far and less frighteningly than a pure-equity one.

Lower volatility is not automatically "better"; it is a deliberate trade. By holding more bonds you accept a lower expected long-run return in exchange for a smaller maximum drawdown and a smoother path. That trade makes most sense when your time horizon is shorter — money you may need within, say, five to ten years has less time to recover from a deep fall — or when you simply know from experience that a large paper loss would tempt you into selling at the bottom. The best portfolio is the one you can actually hold; for many people that is a calmer one, even at the cost of some growth.

The role of bonds, gilts and the defensive sleeve

The defensive sleeve can be built in more than one way, and the choice has consequences for both behaviour and tax. The figures below are illustrative examples to frame the choice, not recommendations.

Two details matter when sizing the bond sleeve. Currency: an unhedged global bond fund can be more volatile in sterling terms than the bonds themselves, which defeats the point of ballast — hedging to GBP, or using sterling gilts, removes that noise. Duration: longer-dated bonds fall harder when interest rates rise, so a cautious investor often prefers shorter or intermediate duration for steadier ballast. Our gilts vs global bonds guide compares the two routes in detail.

Income vs growth, rebalancing and the wrapper

A cautious core can be run for growth or for income, and the choice mostly comes down to whether you are still building wealth or starting to spend it. In the accumulation phase, an accumulating share class reinvests dividends and coupons automatically, compounding without any trades from you. Approaching or in retirement, a distributing class pays that income out as cash, which can fund spending without forcing you to sell units in a falling market. The underlying portfolio can be identical; only the cashflow handling and the tax admin differ.

Because a balanced portfolio drifts as equities and bonds move apart, it needs occasional rebalancing back towards target — this is the discipline that quietly sells what has done well and buys what has lagged. An annual check, or a threshold rule (for example, only acting when a sleeve drifts more than five percentage points from target), is usually enough and keeps trading costs down. The wrapper makes this painless: inside an ISA (with a £20,000 subscription limit for 2026/27) or a SIPP, rebalancing trades, dividends and gains are all sheltered from UK tax, so you can rebalance whenever the plan says to without a tax bill. In a General Investment Account, by contrast, a rebalance can crystallise a capital gain — one more reason most long-term core money is best held inside a wrapper. See the ISA vs GIA guide for how that choice compounds over time.

The split itself is a personal decision, not a fixed rule. A 60/40 blend is a common balanced starting point; investors with longer horizons or higher tolerance might lean to 70/30, while those closer to spending the money might prefer 50/50 or 40/60. The right answer is whichever mix you can hold steadily through the next bad year.

Educational content only. Not financial advice. The allocations and splits above are illustrative examples, not recommendations. Investment values can fall as well as rise, and you may not get back what you invested. Tax treatment depends on individual circumstances and may change. Always check current factsheets before investing.