Wiki/Immediate or Cancel (IOC) Orders in Cryptocurrency Trading
Immediate or Cancel (IOC) Orders in Cryptocurrency Trading - Biturai Wiki Knowledge
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Immediate or Cancel (IOC) Orders in Cryptocurrency Trading

An Immediate or Cancel (IOC) order is a type of trade instruction in cryptocurrency markets. It demands immediate execution of a buy or sell order, canceling any portion that cannot be filled instantly.

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Michael Steinbach
Biturai Intelligence
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Updated: 2/2/2026

Immediate or Cancel (IOC) Orders in Cryptocurrency Trading

Welcome, future traders! Let's explore a crucial tool in the crypto world: the Immediate or Cancel (IOC) order. Think of it like a very specific instruction you give the exchange when buying or selling crypto. You're saying, "I want this trade to happen right now, and if it can't happen immediately, just cancel the part that didn't go through." It's all about speed and precision.

Key Takeaway

An Immediate or Cancel (IOC) order is a trade instruction that aims for immediate execution of the entire order, and any portion that cannot be filled instantly is automatically cancelled.

Mechanics

Let's break down the mechanics. Imagine you want to buy 1 Bitcoin at $60,000 using an IOC order. Here's what happens:

  1. Order Submission: You submit your IOC order to the exchange, specifying the asset (Bitcoin), the action (buy), the quantity (1 BTC), and the price ($60,000).

  2. Immediate Search: The exchange immediately looks for matching sell orders at $60,000 or lower. If there are sellers offering Bitcoin at your specified price or better (e.g., $59,999), the exchange will execute the trade.

  3. Partial Fills: If only a portion of your order can be filled immediately (e.g., only 0.5 BTC is available at $60,000 or less), the exchange will execute that portion. The remaining 0.5 BTC of your order is then automatically canceled. This is the "cancel" part of the IOC.

  4. No Fill, No Problem: If there are no sell orders available at $60,000 or less when the order is placed, the entire order is immediately canceled. You won't buy any Bitcoin, and you won't be left with a lingering, unfulfilled order.

An IOC order is a trade instruction designed to execute as much of your order as possible immediately.

This contrasts with a Limit Order, which stays open on the exchange's order book until it's filled or you cancel it. IOCs are all about getting in and out quickly, often used by traders who need to execute trades at a specific price point and are less concerned about filling the entire order.

Trading Relevance

IOC orders are particularly relevant in volatile markets. Consider these scenarios:

  • Sudden Price Spikes: Imagine a breaking news story causes the price of Bitcoin to jump. You might use an IOC order to quickly buy Bitcoin at a specific price before the price rises further. If the price has already moved beyond your target, the order is canceled, protecting you from buying at a higher, undesirable price.

  • Arbitrage Opportunities: Arbitrage traders, who profit from price differences across different exchanges, often use IOC orders. They need to execute trades swiftly to capitalize on these fleeting opportunities.

  • Avoiding Slippage: Slippage is the difference between the expected price of a trade and the price at which it's actually executed. IOC orders, by their nature, can help minimize slippage. If the market isn't favorable, the order is canceled, preventing you from executing a trade at a worse price.

How Price Moves with IOCs: IOC orders can contribute to price movement, particularly when they are used in large volumes. A large IOC buy order, for example, can quickly deplete the available sell orders at a particular price, potentially causing the price to increase. Conversely, a large IOC sell order can quickly fill the existing buy orders and potentially push the price downward.

Risks

While IOC orders offer speed and control, they come with risks:

  • Partial Fills and Missed Opportunities: If only a portion of your order is filled, you might not achieve your trading objective. You might have wanted to buy 1 BTC but only got 0.5 BTC. Also, if the price moves favorably after the partial fill and the rest of the order is canceled, you've missed out on the opportunity.

  • Market Impact (For Large Orders): Submitting a very large IOC order can have a significant impact on the market. If there aren't enough orders at your desired price, the order can move the price, potentially against you. Be cautious with large orders, especially in less liquid markets.

  • Unfavorable Fill Prices: If the market is moving quickly, you might end up with an unfavorable fill price, even with an IOC order. While the order aims for immediate execution, the price at which it executes can still be worse than you anticipated.

History/Examples

IOC orders are a standard feature in traditional financial markets (stocks, bonds, etc.) and have been seamlessly adopted by cryptocurrency exchanges. They are used by both institutional and retail traders.

  • Early Crypto Trading: In the early days of Bitcoin (like 2009), exchanges were less sophisticated. IOC orders helped traders execute trades quickly when liquidity was low and prices were volatile.

  • High-Frequency Trading (HFT): HFT firms, which use algorithms to execute trades at lightning speed, frequently employ IOC orders to capitalize on tiny price differences. This is a very advanced use case, but it demonstrates the utility of IOCs in the fastest-paced trading environments.

  • Market Making: Market makers, who provide liquidity to an exchange by posting buy and sell orders, may use IOC orders to quickly adjust their positions and react to market changes.

IOCs are a fundamental order type, and understanding them is crucial for any serious crypto trader. They offer a powerful way to control your trades, but they also require careful consideration of market conditions and potential risks. Now you're one step closer to mastering the art of crypto trading! Be sure to use them with wisdom and diligence.

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Disclaimer

This article is for informational purposes only. The content does not constitute financial advice, investment recommendation, or solicitation to buy or sell securities or cryptocurrencies. Biturai assumes no liability for the accuracy, completeness, or timeliness of the information. Investment decisions should always be made based on your own research and considering your personal financial situation.