Probably the largest OTC gold trading market is the London market, known as the Londin Bullion Market Association, which has governed the market for over a century. The OTC market provides morning fixing at 10.30am local time and afternoon fixing at 3pm local time. These two fixings thus serve as a reference for the price of gold throughout the world. Of course, the price of gold also moves live and in real time and you can follow its evolution on the stock exchange charts.