GTC, or Good ‘Til Cancelled, is a term used in the world of finance and trading to refer to an order that remains active until it is either filled or cancelled by the trader. This type of order allows traders to set a specific price at which they are willing to buy or sell a particular asset, and it will remain in effect until the trader manually cancels it or the order is executed. GTC orders provide traders with flexibility and convenience, as they do not have to constantly monitor the market and manually place orders. However, it is important for traders to regularly review and update their GTC orders to ensure they are still in line with their trading strategy.