Understanding Market Orders vs Limit Orders
Reviewed by Ed WilkinsonLast updated: May 7, 2026 12:21 pm
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When you start trading shares or exchange-traded funds (ETFs), understanding the order types you can place is crucial. Two of the most common are market orders and limit orders. Each has specific uses, benefits and drawbacks, and may suit different strategies and market conditions. This article is for education only and is not personal advice. All investing involves risk; the value of investments can fall as well as rise, and you could get back less than you invest.
What is a Market Order?
A market order is an instruction to buy or sell a security as soon as possible at the best available price. It typically executes quickly, so it may suit traders who prioritise speed and execution certainty over exact price. In volatile sessions, prices can move rapidly, and market orders can help you obtain a prompt fill, but you give up control over the final execution price. Fills can occur in several tranches at different prices, and in thin markets, execution may be some distance from the last traded or quoted price.
Advantages of Market Orders
- Immediate execution: Often the fastest way to execute a trade, which can be useful in rapidly changing markets.
- Simplicity: Market orders are straightforward to place, making them accessible for both novice and experienced traders.
- High execution certainty: These orders are usually filled promptly in normal market conditions, provided there is sufficient market liquidity.
Disadvantages of Market Orders
- Price uncertainty: The execution price may differ significantly from the last seen price due to market volatility and the bid-offer spread.
- Slippage: The gap between the expected transaction price and the actual price at which the order is executed can lead to unexpected costs. This is particularly relevant in less liquid securities or during market events that trigger substantial price movements.
Enhanced Understanding of Market Orders
While market orders offer the advantage of quick execution, the order’s timing can still affect the final trade price. For instance, orders placed around the opening or closing auctions may experience greater price shifts due to order imbalances and higher trading volumes. It’s also important to consider that in extremely volatile conditions, such as geopolitical events or economic announcements, the price at which a market order executes can be unpredictable.
Statistical Insights
There is no single industry-wide split between order types. On many equity venues, most resting orders are limit orders, while a significant portion of retail flow arrives as marketable orders (including market and marketable-limit orders). The degree of slippage typically depends on liquidity, the size of your order and prevailing volatility.
Practical Tips
- Time your orders: Avoid placing market orders at the very start or end of the trading day to reduce the risk of encountering price anomalies.
- Monitor market news: Stay updated on news that might cause market volatility and plan your trades accordingly.
- Consider liquidity: Highly liquid securities typically experience less slippage, making market orders more effective in such environments.
Understanding these nuances can help traders make more informed decisions when using market orders and mitigate some of the inherent risks associated with this order type.
What is a Limit Order?
A limit order is an instruction to buy or sell a security at a specified price or better. It gives you control over the worst price you are willing to accept. However, there is no guarantee that a limit order will execute, as the market may never reach your specified price, and orders can be partially filled. A limit placed above the current price to buy (or below to sell) may execute immediately as a ‘marketable’ limit order.
Advantages of Limit Orders
- Price control: They allow traders to set a maximum or minimum price, providing better control over trading costs. This is especially beneficial in avoiding the purchase of shares at inflated prices during market spikes.
- Potential for better pricing: Traders can potentially buy at a lower price or sell at a higher price than with market orders, which can help reduce trading costs or achieve target prices over time.
- Flexibility: Limit orders can be set to remain open for a day, a specific number of days, or until cancelled (good till cancelled), subject to your broker and the trading venue. Many UK brokers offer goodtilldate/time rather than an indefinite GTC.
Disadvantages of Limit Orders
- Lack of execution guarantee: If the security never reaches the specified price, the order will not be executed, which might result in missed trading opportunities.
- Missed opportunities: In a rapidly rising market, a limit order to buy might be set too low, which could mean missing out on beneficial trades. Conversely, setting a limit order to sell at a price that is too high can result in failure to execute during market downturns.
Statistical Insights
Usage varies by market and broker. Many strategies rely on limit orders to target entry and exit levels and to manage execution risk, while marketable orders are often used when immediacy is the priority.
Practical Tips
- Set realistic price targets: To increase the likelihood of execution, ensure your limit price is set based on thorough market analysis and realistic expectations of market movements.
- Use in combination: Consider pairing limit orders with stop-loss orders to manage risks effectively, especially in volatile markets. Remember that stop orders are not guaranteed; a stop-limit can cap price risk but may not execute.
- Review regularly: If your limit order has not been executed over an extended period, revisit your strategy and adjust the order price in line with current market conditions.
By understanding and using the strengths of limit orders, traders can better achieve specific pricing goals and align their investment strategies with their financial objectives and risk tolerance.
Choosing Between Market and Limit Orders
The decision to use a market order or a limit order largely depends on your trading strategy and the specific market situation. If timely execution is crucial and you are willing to sacrifice some control over the price, a market order may be suitable. Conversely, if you prioritise getting a desired price over the immediacy of execution, a limit order could be the appropriate choice.
Factors to Consider
- Market volatility: In highly volatile markets, limit orders can protect you from buying at peak prices or selling at rock-bottom prices. It is essential to actively monitor market conditions, as what might be considered a peak or trough can shift rapidly.
- Stock liquidity: For securities with high liquidity, market orders often execute near the quoted price. For less liquid securities with wider spreads, limit orders can help manage the risk of large price fluctuations. The choice of order type should align with the asset’s liquidity profile to support effective execution.
- Trading objectives: Consider whether achieving a specific price target or immediate execution is more important for your goals. It’s also beneficial to assess how these goals fit into your broader financial strategy.
Additional Considerations
When deciding between market and limit orders, traders should also consider the size of the order. Large orders in a low-liquidity market can impact prices; this risk can be mitigated by using limit orders to avoid significant slippage. Conversely, in a high-liquidity market, large market orders are less likely to move the market price significantly. Remember to factor in dealing fees, taxes and levies where applicable (for example, the 0.5% Stamp Duty Reserve Tax1 on most electronic purchases of UK shares, exemptions for many ETFs and some AIM shares, and the £1 PTM Levy on UK share trades over £10,0002). Charges vary by asset and broker.
Statistical Context
The use of market orders often rises during periods of elevated volatility, as participants prioritise the immediacy of execution. In calmer markets, traders may favour limit orders to focus on price control and execution quality.
Understanding these dynamics and how they relate to current market conditions can enhance trade execution strategies. It’s sensible to review these factors regularly and adjust your approach accordingly. A considered use of either market or limit orders, based on current assessments, can help manage potential risks and achieve your intended outcomes.
Guidance for Effective Decision Making
Deciding on the type of order to use should be a dynamic choice based on evolving market conditions, financial goals and the liquidity of the asset in question. Regularly revisiting your strategy and staying informed about market developments can help you make more effective trading decisions.
For personalised advice and to ensure compliance with financial regulations, especially within the UK market, consider consulting an adviser at a firm authorised and regulated by the Financial Conduct Authority (FCA). They can provide tailored guidance that considers both market conditions and your individual objectives and risk tolerance.
A Financial Adviser Can Help
Choosing the right type of order can be complex, especially for new traders or in volatile market conditions. A qualified financial adviser can explain how different order types work in the context of your goals and risk tolerance, and help you design an approach that balances speed, price control and execution risk.
FinancialAdvisers.co.uk can assist you by connecting you with an FCA-authorised and regulated financial adviser in your area. Whether you need help understanding order types or considering how they fit within a broader investment plan, our network of experienced advisers can help you find regulated advice.
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