What’s a gap (up or down) in the price? Simple. A jump usually on open of the market. 8am on a Monday. Not only open but also a shock or surprise event or announcement. Should you trade them? I don’t. Very often they can be an attempt to manipulate the current price by dumping a large gold contract. Or the market will be factoring news released over the weekend. The danger is to be triggered to trade in the same direction when what usually happens is the price then retracts to move back toward the trend. Don’t be triggered. Control your mouse finger.