What is a one-cancels-the-other (OCO) order, explained A one-cancels-the-other (OCO) order is a trading instruction where the execution of one order automatically cancels a second order. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Filed under: Bitcoin - @ February 12, 2024 8:23 am