Investing term

What is Asset allocation?

The mix of stocks, bonds, and cash in a portfolio, expressed as percentages.

Asset allocation is the deliberate split of a portfolio across the major asset classes — stocks, bonds, and cash — set as target percentages. It's the single decision that most shapes your outcomes: how much your portfolio can grow, and how hard it can fall in a bad year.

The right allocation flows from your time horizon and your tolerance for losses, not from whatever happens to be performing well right now. A long horizon argues for more stocks and their growth; a short one or weak nerves argue for more bonds and cash. Get this mix right and the individual picks within each class matter far less.

The mix that drives your outcome
60/40balanced mixStocks60%Bonds30%Cash10%Your split across classes — set by horizon and risk tolerance — drives most of your outcome.

How you split money across stocks, bonds, and cash — your asset allocation — shapes most of your risk and return, far more than which specific funds you pick.

For example

A 30-year-old saving for retirement might choose 90% stocks / 10% bonds, while someone retiring next year might flip toward 40/60 to protect what they have.

Learn it by doing

That's Asset allocation in theory — it clicks when you use it. Practise it hands-on in a free, interactive lesson (Stage 3, Know Yourself: Risk Tolerance & Time Horizons).

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Why it matters to you

Asset allocation matters more than almost any other investing decision, because research consistently shows the stock-bond-cash mix explains the large majority of a portfolio's risk and return over time — far more than security selection or market timing. It's also the lever you fully control. Choosing an allocation you can hold through a crash, and sticking to it, does more for your results than any clever pick ever will.

⚠ Letting recent performance set the mix

It's tempting to load up on whatever asset class just soared and shun whatever slumped — but that's chasing the past and usually buying high. Your allocation should be driven by your horizon and risk tolerance, then held steady, not reset to chase the latest winner. The mix is a plan, not a reaction.

Frequently asked questions

What is asset allocation?

It's how you divide your portfolio among asset classes such as stocks, bonds, and cash, expressed as target percentages like 60/40. It's the primary driver of both your expected return and how much your portfolio swings, so it's the most important portfolio decision you make.

How should I choose my asset allocation?

Base it on your time horizon and tolerance for losses. A longer horizon supports more stocks for growth; a shorter one, or a lower tolerance for drops, calls for more bonds and cash. A common rough guide is to hold more stocks when young and shift toward bonds as a goal nears.

Why does asset allocation matter more than stock picking?

Because studies find the split between asset classes explains most of a portfolio's risk and return over time, while individual security selection explains far less. Getting the broad mix right — and holding it — has a bigger, more reliable impact than picking the best stocks within it.

Read the full guide

Building a portfolioWhat Is a Balanced Fund? The One-Fund Portfolio, ExplainedA balanced fund holds stocks and bonds in one package and rebalances itself. How it works, the flavours it comes in, target-date funds, fees, and buy-vs-build.8 min readMarketsThe Market Already Priced In the WarIran's ceasefire collapsed, oil jumped and stocks dipped — then recovered in days. Here's what 'priced in' really means, and why a known war barely moves the market.9 min readBuilding a portfolioThe 60/40 Portfolio: The Classic Mix, ExplainedThe 60/40 portfolio — 60% stocks, 40% bonds — is the most famous recipe in investing. Why those numbers, how rebalancing works, and is it still any good?8 min read

Related terms

Allocation driftThe slow movement of your portfolio away from its target mix as market values change.Bear marketA prolonged market decline, conventionally defined as 20%+ from recent highs.DrawdownThe peak-to-trough fall in an investment's value before it recovers.Glide pathA planned shift in allocation over time — typically moving from stocks toward bonds as retirement approaches.
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