Order Types, Settlement & Avoiding Beginner Errors Core

The mechanics of placing a trade take ten minutes to learn and save you money for the rest of your life. The six mistakes below take most people a full year and a real loss to learn.

Market vs limit orders

Two order types cover essentially everything a long-term investor needs.

• A market order says "buy this now, at whatever the best available price is." It executes immediately. You control the timing and not the price.
• A limit order says "buy this, but pay no more than $X." It executes only if someone will sell at your price or better. You control the price and not the timing.

For a heavily traded security — a major index ETF, a large-cap bank — the difference is usually a cent or two and does not matter. For anything thinly traded, it matters enormously, and the failure mode is unpleasant: your market order consumes the small number of shares available at a good price, then keeps filling at progressively worse ones until the whole order is complete. You can pay materially more than the price you saw on screen.

You may also meet stop orders, which trigger a market order once a price is reached. They are marketed as protection and behave poorly in exactly the conditions they are meant to help with — a sharp opening gap can trigger a stop and then fill far below it. They belong to trading, not to long-term investing.

The bid-ask spread — a cost with no line item

At any moment a security has two prices: the bid (the highest anyone will pay) and the ask (the lowest anyone will sell for). You buy at the ask and sell at the bid. The gap between them is the bid-ask spread, and it is a genuine cost that never appears on a statement.

Practical consequences: prefer ETFs with meaningful daily volume and tight spreads; avoid trading in the first and last fifteen minutes of the session, when spreads are widest; and remember that every extra round trip pays the spread again — another quiet argument for holding rather than trading.

T+1 settlement

When you buy, the trade executes immediately but ownership legally transfers on the settlement date. Canadian and US markets moved to T+1 in 2024 — one business day after the trade.

Three places this matters:

• Selling to withdraw cash. Proceeds are not withdrawable until settlement. Selling on Friday means the cash is available Monday. If you need money on a specific date, sell with a few days to spare.
• The last trading day of the year. For a capital loss to count in the current tax year, the trade must settle in that year. In practice the last eligible trade date is a day or two before December 31 — check the exact date each year, because tax-loss selling done too late simply lands in the following year (Lesson 6.1).
• Cash account restrictions. In a registered account you generally cannot use unsettled proceeds to buy something else without triggering a violation. Waiting a day avoids the problem entirely.

The six classic first-year errors

1. Buying individual stocks before owning an index fund

Single stocks are more interesting than index funds, which is the problem. A new investor with three positions has a portfolio whose outcome is dominated by company-specific risk that carries no expected return premium — it is uncompensated risk, in the language of Lesson 5.1. Build the diversified core first. If you then want to own individual companies, do it with a defined slice you would be comfortable losing.

2. Checking the balance every day

Covered in Lesson 1.4 and worth repeating because it is the gateway to the other five. Daily checking supplies a constant stream of emotionally significant, informationally worthless data. Nothing you learn from a daily price change should change a thirty-year plan.

3. Selling during the first correction

The most expensive error on the list. A 10–20% decline is normal and happens frequently; a 30%+ decline happens roughly once a decade. Selling converts a temporary, unrealised decline into a permanent, realised loss, and then poses the unanswerable question of when to get back in — usually resolved after prices have recovered.

4. Chasing last year's winner

The best-performing fund or sector of the past year attracts the most new money, which is recency bias in action. Reversion is common, and the fund's published return belongs to the people who held it during the run, not to those arriving afterward.

5. Ignoring FX fees

Buying US-listed securities in Canadian dollars converts at roughly 1.5%, invisibly, inside the exchange rate. Investors who diligently choose a 0.05% ETF and then pay 1.5% on every conversion have lost thirty years of fee savings in one transaction. Lesson 6.3 is the fix.

6. Overtrading inside a TFSA

Two distinct problems. First, capital losses in a TFSA are worthless — they cannot offset gains anywhere, and the lost value permanently destroys contribution room. Second, sufficiently frequent trading risks the CRA assessing the account as carrying on a business, making the gains fully taxable (Lesson 2.1). The account with the best tax treatment in Canada is the worst place to experiment.

Common questions

Should I use a market order or a limit order?

Use a limit order every time. On heavily traded securities the difference is a cent or two, but on a thinly traded ETF a market order can fill several percent worse than the quoted price as it consumes the available liquidity. Setting the limit a few cents above the current ask fills almost as quickly as a market order in normal conditions while capping what you can be charged.

What does T+1 settlement mean?

The trade executes immediately but legal ownership and cash transfer complete one business day later. Practically, proceeds from a sale are not withdrawable until settlement, and for a capital loss to count in the current tax year the trade must settle within that year — so the last useful tax-loss selling date is a day or two before December 31, not December 31 itself.