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Starting simple: one broad-market ETF
A cairn marks the path. A tree represents growth.
A lot of self-directed portfolios start — and stay — as one line on a statement. One ticker, one price to glance at, one fund doing all the work of holding thousands of companies underneath it. For a lot of people making the switch from a bank-managed account, that simplicity is the whole appeal.
This isn't a "starter" step you're meant to outgrow. It's a genuinely durable way to invest, and plenty of experienced self-directed investors never move past it on purpose.
What "one ETF" actually means
It helps to know there are two slightly different things people mean when they say "just buy one ETF."
A broad-market index ETF tracks a large slice of the stock market — everything from a total U.S. stock market fund to a Canadian total-market fund to a fund covering the whole world. It's diversified across companies and sectors, but it's still 100% stocks.
An all-in-one (or "asset allocation") ETF goes a step further. It holds a mix of asset classes — domestic stocks, international stocks, and bonds — inside a single fund, built to a target split like 80% stocks / 20% bonds, and it rebalances that mix automatically as markets move.
Both are "one ETF" in the sense that matters here: a single purchase gets you a diversified portfolio without assembling the pieces yourself.
Why it's easy to miss
"Broad-market ETF" and "all-in-one ETF" get used almost interchangeably in casual conversation, but they're not quite the same thing — one is stocks only, the other bundles in bonds too. Knowing which one a fund actually is matters more than its name suggests, since it changes how much of the portfolio's ups and downs you're signing up for.
Why this is where a lot of people start
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Instant diversification — a single purchase can spread money across hundreds or thousands of companies, rather than betting on a handful.
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One fee to track, not several — costs are simpler to see and compare than when a portfolio is spread across many funds each with their own management fee.
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Rebalancing is handled inside the fund — with an all-in-one ETF, the target mix is maintained automatically, without needing to sell winners and buy laggards by hand.
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Less room for behavioral missteps — fewer holdings to check on means fewer chances to react to short-term noise or tinker with the mix out of anxiety or excitement.
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Easy to understand — it's simple to explain what's owned and why, which matters when a portfolio needs to make sense to the person who owns it.
Some well-known examples of the categories, purely as illustrations of what exists — not as recommendations: