How to Build a Globally Diversified Portfolio

Canada represents roughly 3% of global stock market value. Yet many Canadian investors hold portfolios where 40%, 50%, or even more of their equity exposure is in Canadian companies — often concentrated in banks, energy, and materials. This is called "home country bias," and it is one of the most common — and most overlooked — risks in Canadian portfolios.

Why Home Country Bias Happens

Home country bias is natural and almost universal — investors in every country tend to overweight their own market. Reasons include familiarity (you recognize the names of Canadian banks and energy companies), historical dividend tax treatment that favours Canadian dividends, and simple availability — Canadian mutual funds and "balanced" portfolios often default to a heavy domestic weighting.

The result is a portfolio that looks diversified — it holds many different stocks — but is actually concentrated in one country and often in a narrow set of sectors (financials, energy, materials) that dominate the Canadian market.

The Three Dimensions of Diversification

1. Geographic Diversification

A globally diversified equity portfolio typically includes exposure across:

• Canada — your home market, but a small slice of the global picture
• United States — the largest equity market globally, home to many of the world\u2019s largest companies across technology, healthcare, and consumer sectors
• International developed markets — Europe, Japan, Australia, and other developed economies, providing exposure to different economic cycles and currencies
• Emerging markets — faster-growing economies (though with higher volatility), providing exposure to global growth trends not represented in developed markets

A common starting framework for Canadian investors is to hold Canadian equities roughly in proportion to Canada\u2019s share of global markets (a small percentage), with the majority of equity exposure spread across the US, international, and emerging markets.

2. Asset Class Diversification

Beyond geography, a diversified portfolio typically includes multiple asset classes that behave differently under different economic conditions:

• Equities (stocks) — ownership in companies, the primary long-term growth engine of most portfolios
• Fixed income (bonds) — loans to governments or corporations, generally less volatile than equities and often (though not always) move differently than stocks during market stress
• Cash and cash equivalents — liquidity for near-term needs and rebalancing opportunities
• Alternatives — real estate (including REITs), commodities, or other asset classes that may provide diversification benefits, used selectively depending on the portfolio

3. Sector Diversification

Within equities, sector exposure matters. The Canadian stock market is heavily weighted toward financials, energy, and materials — sectors that tend to move together during commodity cycles. A globally diversified portfolio naturally gains exposure to sectors underrepresented in Canada, including technology, healthcare, and consumer discretionary — sectors that are large components of the US and international markets.

The Currency Question

Investing outside Canada means exposure to foreign currencies — when you hold US or international investments, their value in Canadian dollars fluctuates with exchange rates, in addition to the underlying investment performance.

Currency exposure is sometimes viewed as a risk to be hedged away, but it can also be viewed as an additional source of diversification — a weaker Canadian dollar increases the CAD value of foreign holdings, which can partially offset domestic economic weakness (a scenario where a weaker dollar often coincides with).

Whether to hedge currency exposure is a portfolio design decision that depends on your time horizon, the asset class involved (currency hedging is more common for fixed income than equities), and your overall goals — not a one-size-fits-all answer.

A Sample Globally Diversified Equity Allocation

Region	Approximate Global Market Weight	Illustrative Portfolio Weight
Canada	~3%	10–20% (often modestly overweighted for tax and familiarity reasons)
United States	~60%	40–50%
International Developed	~25%	20–30%
Emerging Markets	~10%	5–15%

These figures are illustrative starting points, not a recommendation for any individual portfolio. The right allocation depends on your goals, time horizon, risk tolerance, and overall financial plan.

Diversification Does Not Eliminate Risk — It Changes Its Shape

A globally diversified portfolio will still decline during global market downturns — diversification does not protect against broad market declines. What it does is reduce the risk that any single country, sector, or company\u2019s problems disproportionately affect your overall wealth.

For Albertans specifically, this matters in a particular way: if your career, your employer\u2019s stock or pension, your home value, and your investment portfolio are all tied to the Alberta economy and the energy sector, a portfolio that is also concentrated in Canadian (and especially energy-sector) equities compounds that concentration rather than offsetting it.

How to Check Your Current Diversification

If you are unsure how diversified your current portfolio actually is, a few questions help:

• What percentage of your equity holdings are Canadian companies?
• Within that, how much is concentrated in financials and energy specifically?
• How much exposure do you have to the US, international, and emerging markets combined?
• If your portfolio includes "Canadian Equity Funds," "Canadian Balanced Funds," or similar — do you know what that actually means for your overall geographic exposure once combined with everything else you hold?