What Is a Limit Order?
A limit order is a type of instruction an investor gives a broker to buy or sell a security at a specific price or better. A buy limit order sets the maximum price the investor is willing to pay, while a sell limit order sets the minimum price the investor is willing to accept. The order will only execute if the market reaches that price or a more favorable one.
Limit orders contrast with market orders, which execute immediately at the best available price but do not guarantee what that price will be.
How It Works
Suppose a stock trades at $50. An investor who wants to buy it only if the price falls to $48 or lower can place a buy limit order at $48. If the stock drops to $48, the order becomes eligible to fill at $48 or less. If the stock never reaches that level, the order stays open until it is filled, canceled, or expires, depending on the order's time-in-force setting.
A sell limit order works in reverse. An investor holding the same stock who wants to sell only at $55 or higher would place a sell limit order at $55. The order fills if the price rises to that level.
Limit orders can also sit partly filled. If fewer shares trade at the limit price than the order requests, the remaining shares stay open.
Advantages and Disadvantages
The main advantage of a limit order is price control. It protects the investor from paying more than intended or selling for less than intended, which can matter in volatile or thinly traded stocks where bid-ask spreads are wide.
The main drawback is that execution is not guaranteed. If the price moves away from the limit and never returns, the trade may never happen. An investor may miss a rising stock entirely or see a falling stock continue lower without the order being filled. Investors who need to trade immediately, regardless of price, may prefer a market order instead.
Why It Matters to Investors
Limit orders are widely used because they let investors set a disciplined entry or exit price in advance rather than reacting to whatever price appears at the moment of trading. Understanding how they work also helps investors interpret order book activity and recognize why some orders remain unfilled. Investors can review their brokerage's order types and time in force options to understand how long an order remains active.
Updated October 15, 2026. For general education only; not financial, tax or legal advice.