Stock order types explained: Market order, limit order, stop order and trailing stop

Ben Tan
3 days ago
4 min read

Confused by stock order types? Start here

Before you hit the buy or sell button, do stock order types confuse you?

Have you ever wondered what market orders, limit orders, and stop orders actually do?

In this guide, we will break down the most common stock order types in simple terms so you can understand when to use each one.

Stock trading interface showing multiple order types for 100 shares at a limit price of 138.65. Order type options are visible—Blue "Buy Order" button.

What is a market order?

A market order is an instruction to buy or sell a stock immediately at the best available price. Its main purpose is fast execution, but the final price is not guaranteed.

This is important because the last traded price you see may not be the same as the price you get when your order goes through, especially in a fast-moving market.

Investors often use market orders when speed matters more than price. This is usually more practical for highly liquid stocks, where trading volume is high, and the bid-ask spread is narrower.

What is a limit order?

A limit order allows you to set the maximum price you are willing to pay when buying a stock, or the minimum price you are willing to accept when selling one.

A buy limit order will only go through at your chosen price or lower. A sell limit order will only go through at your chosen price or higher.

This gives you more control over the price, but it does not guarantee that your order will be filled.

I personally use limit orders most often. Since I invest based on valuation, I want control over the price I pay, even if that means the trade may not happen.

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What is a stop order?

A stop order, also called a stop-loss order, is designed to buy or sell a stock once it reaches a specific trigger price.

Once that stop price is hit, the stop order becomes a market order. That means it aims to execute immediately at the best available price, but the final price is still not guaranteed.

Unlike a regular market order, a stop order stays inactive until the stock reaches the trigger price.

When should you use a stop order?

A stop order can serve a few useful purposes:

To protect gains on a stock that has already risen
To limit losses on a recently purchased stock
To trigger a buy order when a stock breaks above a certain level

That said, stop orders carry risk in volatile markets. If the stock gaps down or moves sharply, the execution price may be much worse than the stop price.

What is a stop-limit order?

A stop-limit order combines the features of a stop order and a limit order.

You set two prices:

the stop price, which activates the order
the limit price, which sets the worst price you are willing to accept

For example, if you place a sell stop-limit order with a stop price of $3.00 and a limit price of $2.50, the order becomes active once the stock hits $3.00, but it will only sell at $2.50 or higher.

This gives you more control over the execution price and helps reduce the risk of selling too far below your target during a sudden price drop.

The trade-off is simple: like all limit orders, execution is not guaranteed.

What is a trailing stop order?

A trailing stop order works differently because the stop price is not fixed.

Instead, the stop price follows the stock price by a set dollar amount or percentage. If the stock moves in your favour, the trailing stop moves along with it. If the stock moves against you, the stop price stays where it is.

If the stock price falls to the trailing stop level, the order is triggered.

This makes trailing stops useful for investors who want to lock in gains while still giving a stock room to rise.

How to choose the right stop price?

Graph of XYZ stock price vs trailing stop price. Stock peaks at $150, then falls. Dashed line in blue, stop line in orange. Numbered steps of how a trailing stop price works.

For stop orders, stop-limit orders, and trailing stop orders, choosing the right stop price matters a lot.

If your stop is too tight, short-term market noise may trigger your order too early. If it is too wide, you may take on more downside than you intended.

The best stop price depends on the stock’s volatility, your investment horizon, and your risk tolerance.

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Charlie Munger in a suit and tie on a white-green background. Text: "Charlie Munger's Psychology of Human Misjudgement."

Market order vs limit order vs stop order: What is the difference?

Here is the simplest way to think about it:

Market order: prioritises speed
Limit order: prioritises price control
Stop order: activates only when a trigger price is reached
Stop-limit order: adds price control after the stop is triggered
Trailing stop order: adjusts automatically as the stock moves in your favour

Final thoughts on stock order types

Understanding stock order types can help you trade or invest with more clarity and control.

Market orders are useful when speed matters. Limit orders help you manage price. Stop orders and trailing stops can help with risk management, though they come with their own trade-offs.

Once you understand how each order type works, you can choose the one that best fits your strategy instead of placing trades blindly.

If this article helped clear things up, let me know. And yes, I probably still managed to sneak in the word “execution” a few too many times.