The Difference Between Market Orders and Limit Orders
When buying a stock, "right now" and "at the price I want" are hard to get together. A market order and a limit order are the choices for deciding which of these two to prioritize.
Limit Order — Set the Price You Want
A limit order is an order that pins down a price, saying "I'll buy (or sell) at this price." Most orders are limit orders.
For example, if you place a buy limit at 10,000 KRW, it executes only when the price comes down to 10,000 KRW or below. Its biggest advantage is that your desired price is guaranteed.
But there's a downside too. If there's no one willing to sell at that price, it may not execute. If you want to buy urgently but insist only on a limit order, you may miss the opportunity.
A limit order specifies your desired price and is the most commonly used. (Source: Namuwiki, "limit order")
Market Order — Execute Right Now
A market order sets only the "quantity" without setting a price, and executes immediately against the opposite quotes currently available in the market.
Its advantage is speed. When you want to quickly buy a surging stock or quickly sell a plunging one, it executes with certainty.
The downside is that you can't control the price. In stocks with thin quotes (little pending volume), "slippage" can occur, where you buy for more or sell for less than expected. It's convenient, but there's a risk of executing at an unfavorable price.
A market order executes quickly but may execute at an unfavorable price. (Source: Hankyung Saenggeul Saenggeul, "market order")
Conditional Limit Orders and Other Order Types
The Korean market also has a "conditional limit order" that splits the difference between the two methods. During the session it trades as a limit order, and any volume not executed by the end is automatically converted to a market order at the closing simultaneous quote (15:20–15:30). Its execution probability is higher than a limit order and its price more stable than a market order.
Besides these, there are the "best-available limit order," placed at the best opposite quote, and the "best-priority limit order," placed at the best same-side quote, but for beginners it is enough to first learn the difference between limit and market orders.
Conditional limit order: a limit order during the session → unexecuted remainder converts to a market order at the close. (Source: Kakao Pay Securities, Kyobo Securities order guides)
Frequently Asked Questions
Q. Which order should a beginner use?
There is no single right answer, but starting practice with limit orders, where you can control the price yourself, can reduce being executed at an unexpected price. In volatile stocks, it is important to understand that using a market order can result in execution at an unfavorable price. This is an explanation of execution characteristics, not a recommendation of any specific trade.
Q. What exactly is slippage?
It refers to the difference between the price you expected when placing an order and the price at which it actually executed. If you place a large market order on a stock with little pending volume, the nearby quotes are quickly used up and execution reaches less favorable quotes, so slippage can grow larger.
Related pages
📋 Results are based on historical data; past returns do not guarantee future returns.
📋 This service is provided for educational purposes to help you understand investing, not as investment advice.