How do you do a stop loss on Coinbase pro?

To place a stop-loss order, you’ll need to have an open position. Change the order type from Buy to Sell and select the Stop tab. You will see three fields, and here’s what they mean:

Stop Price: price at which the order triggers
Amount: amount you want to sell
Limit Price: the price at which you will sell
The most confusing part about a stop-loss order is understanding the difference between the stop price and the limit price. Once you grasp that concept, it will all make sense.

Two prices are necessary because one is the trigger (stop), and the other is your desired price to sell (limit). When the price is dropping, it can happen very quickly and violently—having an automated way to sell your position can result in fewer losses.