What is an OCO (One-Cancels-the-Other) order and how to use it?

2025-08-01 08:01

What is an OCO order?

A One-Cancels-the-Other (OCO) order combines a stop-limit order and a limit order, where if stop price is triggered or limit order is fully or partially fulfilled, the other is canceled.

An OCO order on Toobit consists of a stop-limit order and a limit order with the same order quantity. Both orders must be either buy or sell orders. If you cancel one of the orders, the entire OCO order pair will be canceled.

How to use OCO order？

Suppose ETH is trading between 3200 USDT and its resistance price of 3400 USDT. You would like to buy ETH if the price drops to 3000 USDT or rises above 3400 USDT.

You can create an OCO order with a limit order of 3000 USDT ([Price] on the chart) and a stop-limit order with a stop (trigger) price of 3400 USDT. You can then set the stop-limit order’s limit price to 3500 USDT, so the order will likely be filled.

When ETH reaches 3000 USDT, the limit order will be filled. This means the stop-limit order will be automatically canceled. Similarly, when ETH reaches 3400 USDT, the stop-limit order will be triggered and the limit order will be automatically canceled.

OCO buy order example
For buy orders, you can set the stop price (B) above the current price and the price (C) below the current price.
For example, the stop-limit order will be triggered when the price goes up to 3,000 (B), and the limit order will be simultaneously canceled. A limit order with limit price (B1) will be placed into the orderbook. However, if the price drops to 1,500 (C) or below, the limit order will be executed automatically with 1,500 (C) and the stop-limit order will be canceled.
OCO sell order example
For sell orders, you can set the stop price (C) below the current price and the price (B) above the current price.
For example, the stop-limit order will be triggered when the price drops to 1,500 (C), and the limit order will be simultaneously canceled. The limit order with price C1 will then be placed into the orderbook. Otherwise, if the price goes up to 3,000 (B) or above, the limit order will be executed automatically with 3,000 (B) and the stop-limit order will be canceled.
How to use OCO orders through Web
How to check OCO orders history?
OCO order setting conditionsFor sell orders, you may try:
Price (limit order) > current market price > stop-loss trigger price (stop-limit order)
For buy orders, you may try:
Price (limit order) < current market price < stop-loss trigger price (stop-limit order)
*For stop-limit order, you may try setting the limit price closer to the stop-loss trigger price.