Order types
Market, limit, and stop — how you actually trade.
An order is your instruction to the exchange. Choosing the right type controls whether you prioritise speed or price — and, crucially, it's how you automate your protection so that fear and greed never make your exit decisions for you.
The three core orders
Master these three and you can express almost any trading plan. Everything fancier is just a combination of them.
- Market order — fills immediately at the best available price. Fast and certain to fill, but you accept the spread and any slippage.
- Limit order — fills only at your chosen price or better. Patient and precise, but it may never fill if price doesn't reach you.
- Stop order — sits dormant until price hits a trigger level, then becomes a market order. The backbone of every stop-loss and breakout entry.
Stop-loss and take-profit
Two specific uses of these orders keep you disciplined. A stop-loss is a stop order placed against your position — if price moves against you to a level you've predefined, it closes the trade automatically and caps the damage. A take-profit is a limit order at your target that banks the win without you having to watch.
Setting both the moment you enter is the single most important habit a beginner can build. The hardest decisions in trading — when to cut a loser, when to take a winner — are made calmly in advance, not in the heat of a moving market.
If your stop and target are placed before you enter, the two hardest decisions are already made for you.
A worked example
Say a stock trades at $100. You think it'll rise but want to enter cheaper, so you place a buy limit at $98. It fills. You immediately place a stop-loss at $96 (your max loss is $2 per share) and a take-profit limit at $104 (your target is $4 per share).
Now three outcomes are fully automated: price drops to $96 and your stop closes the trade for a controlled loss; price rises to $104 and your target banks the win; or price churns in between and you simply wait. At no point do you have to make an emotional decision mid-trade — the plan executes itself.
A few useful extras
Two variations are worth knowing early. A stop-limit order triggers a limit (not a market) order when hit — it protects you from slippage but risks not filling in a fast move. A trailing stop follows price as it moves in your favour, locking in more profit automatically while still giving the trade room to breathe.
Don't drown in order types. The big three plus a stop-loss habit will carry you through your entire first year. Add the rest only when you have a specific reason.
A market order guarantees a fill but not a price. A limit order guarantees a price but not a fill. There is no order that guarantees both — choose which matters more for each trade.
Key takeaways
- Market = speed, limit = price, stop = automation.
- Stops are how you pre-commit to your maximum loss.
- Set entry, stop, and target together — before emotion arrives.
- Market orders guarantee a fill, limit orders guarantee a price — never both.
- Trailing stops lock in profit as a trade runs your way.
Terms in this lesson
- Stop-loss
- A stop order that closes a losing trade at a set level.
- Take-profit
- A limit order that closes a winner at your target.
- Trailing stop
- A stop that follows price to lock in profit.
- Fill
- An executed order.