Recently, many traders have been somewhat unclear about their understanding of GTC orders. In fact, this tool is quite useful for people holding positions for the long term. Put simply, good til cancelled means you set a price and let your broker watch it for you. As long as the stock price touches that level, it will execute automatically—no need for you to monitor the market every day.

Let’s start with real-world scenarios. Suppose you’re bullish on a certain stock, but you think the current price of $55 is a bit high, and you believe $50 is a reasonable entry point. Instead of constantly refreshing your screen and waiting for an opportunity, you can directly place a good til cancelled buy order at $50. Once the stock drops to that level, the order executes automatically, locking in your target price. The same logic can also be used for taking profit—if you hold a stock currently at $80 and want to sell when it reaches $90 to realize gains, just set a GTC sell order. When the price reaches that point, it will sell automatically.

However, this convenience also comes at a cost. GTC orders typically expire automatically after 30 to 90 days, and the rules differ from broker to broker. More importantly, market volatility may trigger your order at a time you didn’t expect. For example, if a certain stock drops from $60 to $50 overnight due to sudden news, your $58 sell order might execute at a price far lower than you anticipated. Another situation is when the price only fluctuates temporarily—it could keep falling after triggering your buy order, and then you’ll regret not waiting a bit longer.

By contrast, day orders (day order) are different. A day order expires automatically at the end of the trading day, making it suitable for traders who want to capture short-term volatility. The benefit of doing this is that it helps prevent your orders from being unintentionally triggered in the following days due to market changes. But if your goal is to wait for a specific price level—potentially for several weeks or even a few months—then a good til cancelled order is a better fit, saving you from having to manually re-enter the order every day.

When it comes to risk management, it’s important to regularly check your open orders. Some people set GTC orders and forget about them, only to find that by the time the order executes, the market environment has completely changed. A smart approach is to use them in combination with stop-loss limits, or to review these orders at intervals to ensure they still align with your trading strategy.

All in all, a good til cancelled order is a solid tool that lets you trade at a predetermined price without continuous monitoring. But the prerequisite is that you understand its risks—market gaps, unexpected volatility, and time limits—then decide whether to use GTC or day orders based on your own trading style.