IOC Meaning: What is IOC in Share Market?

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  • 01 Jul 2023

Active traders often juggle multiple positions in the stock market, where millions of trades occur simultaneously. Keeping track of unexecuted orders can be challenging, leading to missed opportunities and potential frustrations. To streamline the trading process and optimize efficiency, traders can turn to Immediate or Cancel (IOC) orders.

An Immediate or Cancel (IOC) order is one of several order types available to investors and traders in the share market. When placing an IOC order, the investor specifies that the order must be executed as soon as it is released into the market.

This means that the buying or selling of the security must occur almost instantly. If the execution does not happen promptly, the order is automatically canceled and is no longer considered an active or pending order. The cancellation takes place automatically without any intervention required from the investor.

IOC orders are considered "duration" orders, as they define how long the order remains active in the market. However, an IOC order is a "zero duration" order since there is only a brief time lapse between placing the order and its execution.

When setting up an IOC order, you can opt between a limit order or a market order. A limit order means that you will only sell or buy the security when it reaches a specific price point predetermined by you. On the other hand, a market order means that the trade is executed at the current price available in the market.

Investors have the option to submit IOC orders in either "Limit" or "Market" format, depending on their specific trading requirements. IOC limit orders allow investors to specify a particular price at which they want their trade to be executed. On the other hand, IOC market orders are placed at the best available bid price for selling and the best offer price for buying.

The distinguishing feature of IOC orders is that they do not require full execution. Unlike Good 'til Cancelled (GTC) orders, which remain active until they are executed or manually canceled by the client (typically within 30 to 90 days), IOC orders are designed to be either partially executed or canceled immediately.

Benefits to Investors

IOC orders offer several advantages to investors. Firstly, they assist in achieving price improvements by carefully managing the risk associated with executing the trade. By allowing partial execution, IOC orders enable investors to secure a favorable price for the trade portion that can be filled immediately while canceling the unexecuted portion.

Secondly, IOC orders enhance the speed of execution. They prioritize swift execution, which is particularly advantageous in fast-moving market conditions where prices can fluctuate rapidly. With IOC orders, investors can seize opportunities promptly and promptly respond to market dynamics.

Lastly, IOC orders provide investors with increased flexibility. By allowing partial execution or cancellation, they enable traders to adapt their strategies based on changing market conditions. This flexibility ensures that investors have greater control over their trades and can optimize their trading approach accordingly.

To Conclude

Immediate or Cancel orders provide traders with the flexibility and speed necessary to navigate the fast-paced world of the stock market. By allowing immediate execution or cancellation if not fully filled, IOC orders enable traders to seize opportunities quickly and exercise greater control over their trades.

However, it is crucial to consider market conditions, risk tolerance, and the potential impact on prices before utilizing IOC orders. Understanding different order types and their characteristics equips investors with the tools to make informed trading decisions in the ever-evolving share market.


An Immediate or Cancel order is a type of trading order in which the investor instructs their broker to execute a trade immediately or cancel the order if it cannot be fully filled. It prioritizes immediate execution and does not allow for partial fills or execution at a later time.

Yes, IOC orders can be submitted as either "Limit" or "Market" orders. IOC limit orders allow you to specify a particular price at which you want the trade to be executed.

IOC orders offer several advantages to traders. They provide enhanced speed of execution, allowing you to take advantage of short-lived market opportunities swiftly. IOC orders also give you increased control over the execution of your trades and help limit potential losses by canceling the order if it cannot be fully filled.

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