Start With the Foundation
Two things must be in place before building an investment portfolio.
First, an emergency fund of three to six months of living expenses in cash, separate from investment accounts. Without it, a market downturn could force you to sell investments at the worst possible time.
Second, any high-interest debt above 10% should be paid off first. Paying 20% interest while earning 8% on investments is a guaranteed losing trade.
Once the foundation is in place, investing can begin.
Step 1: Define Your Time Horizon
Your time horizon — how long before you need the money — determines how your portfolio should be built.
30+ years to retirement: high proportion of equities. Short-term drops are irrelevant — they will recover long before you need the money.
5 years to a goal: more stability needed. A significant market drop close to your deadline could devastate the portfolio.
Longer horizon means more equities and more acceptable volatility. Shorter horizon means more bonds and more stability.
Step 2: Choose Your Asset Allocation
A simple framework:
- Aggressive (30+ years): 90% equities, 10% bonds
- Moderate (15-30 years): 70% equities, 30% bonds
- Conservative (5-15 years): 50% equities, 50% bonds
- Short-term (under 5 years): mostly bonds and cash
Adjust based on your honest reaction to a temporary 30% portfolio drop. If you would panic and sell, the allocation is too aggressive.
Step 3: Choose Your Investments
Three low-cost index funds cover most investors needs:
A domestic equity fund tracking the total stock market or S&P 500. Hundreds or thousands of companies in one purchase.
An international equity fund for geographic diversification.
A bond fund for stability and reduced volatility.
Look for expense ratios below 0.20% per year. Many excellent options charge 0.03% to 0.10%.
Step 4: Open the Right Account
Tax-advantaged retirement accounts allow investments to grow tax-free or tax-deferred. Maximise these before investing in taxable accounts.
Step 5: Invest Regularly and Rebalance Annually
Set up automatic monthly contributions. Invest the same amount every month regardless of market conditions.
Once per year, rebalance. If equities have grown above your target, sell some and buy bonds to restore the allocation. This enforces selling high and buying low automatically.
Building a portfolio takes one afternoon. Maintaining it takes one hour per year. The returns come from patience — not activity.