Search
CoursesStock researchPaper tradingNews
HomeAbout
Learn › ETF Investing › Module 5

Module 5 · Building the Portfolio: One Fund or Three Core

You now know what is inside an ETF, what it costs, and what mix you want. This module turns that into an actual portfolio. The good news is that a complete one needs between one and three funds.

By · ~10 min read · Not started

By the end of this module you'll be able to

  • Explain how an all-in-one (asset allocation) ETF works.
  • Describe the three-fund portfolio and split a contribution across it.
  • Recognise home bias and decide how much of it you want.
  • Check a set of funds for overlap before buying.

The one-fund portfolio

An all-in-one ETF, also called an asset allocation ETF, is a fund that holds several other index ETFs in a fixed mix: for example 80% global stocks and 20% bonds. The fund rebalances itself back to that mix. You buy one ticker and you are done.

Providers offer a ladder of them, from conservative (mostly bonds) through balanced and growth to all-equity (100% stocks). In Canada these are widely used, with yearly fees commonly around 0.2%. In the US, target-date funds do a similar job and also shift toward bonds automatically as a chosen year approaches.

Who it suitsAnyone who wants a diversified, automatically rebalanced portfolio and would rather not manage one. For many people this is the right answer, and there is nothing unsophisticated about it.

Pick the version whose stock and bond split matches the mix you chose in Module 4. That is the only real decision.

The three-fund portfolio

If you prefer to hold the pieces yourself, three broad index funds cover almost everything:

  1. A domestic stock fund (your home country’s total market).
  2. An international stock fund (everything else).
  3. A bond fund.

You choose the percentages. The reward is slightly lower fees and full control. The cost is that you must rebalance, which is Module 7.

Example. Your targets are 30% domestic stocks, 50% international stocks and 20% bonds. You contribute $1,000. You buy $300, $500 and $200.

amount per fund = contribution × target weight
Splitting a contribution across a three-fund portfolio A 1,000 dollar contribution split by target weight: 300 dollars to domestic stocks at 30 percent, 500 dollars to international stocks at 50 percent, and 200 dollars to bonds at 20 percent. A $1,000 contribution, split by target weight Domestic stocks 30% International stocks 50% Bonds 20% $300 $500 $200 amount per fund = contribution × target weight
Your targets decide how every contribution is split. An all-in-one ETF does the same split, and the rebalancing, inside a single ticker.

Home bias

Home bias is holding far more of your own country’s stocks than its share of the world market. Canada is only around 3% of global stock market value, yet many Canadian portfolios hold 30% or more in Canadian stocks.

Some home bias is reasonable. You spend in your home currency, and Canadian dividends receive favourable tax treatment in taxable accounts. But the Canadian market is concentrated in banks, energy and materials, and light on technology and health care. Too much of it means your savings and your job may depend on the same few sectors.

For US investors the picture is different: the US is well over half of the global market, so a US-heavy portfolio is closer to the world weight. International funds still add thousands of companies you would not otherwise own.

Avoid owning the same thing twice

More funds does not mean more diversification. Common mistakes:

Before adding any fund, ask: what does this hold that I do not already own? If the answer is “not much”, skip it.

Simple beats clever. A portfolio you understand and can describe in one sentence is one you are more likely to hold through a crash. Complexity mostly adds ways to make mistakes.

Put it into practice

Your mission
  1. Decide: one fund or three? Write down why.
  2. If one fund, find an all-in-one ETF whose stock and bond split matches your Module 4 mix. Note its ticker and fee.
  3. If three funds, write your three target percentages and split a pretend $1,000 contribution across them.
  4. Open Paper Trading and build the portfolio with virtual money so you can watch how it behaves.

Open Paper Trading →

💡 Build your chosen portfolio risk-free in Paper Trading, then follow it in the Portfolio Tracker.

Educational purposes only; not financial advice. Any funds, tickers and figures are illustrative examples, not recommendations. Fees, tax rules and contribution limits change, so confirm current details with the fund provider and your tax authority. Worked examples use constant returns and are not forecasts. Written by Elizabeta Dimoska. Always do your own research and consult a licensed advisor.