London Metal Exchange

The London Metal Exchange operates the last remaining open-outcry trading floor in Europe. While many global financial markets moved entirely to electronic systems decades ago, this exchange maintains a traditional, circular trading arena known as the Ring. Inside this space, designated representatives sit in a circle of red leather chairs, shouting buy and sell orders across the room to execute trades. The origins of this practice trace back to the nineteenth century, when traders gathered at the Jerusalem Coffee House. Because there was no formal building for their business, merchants would draw a circle in the sawdust on the floor and shout the word change to signal that trading had begun. This makeshift ring allowed them to establish prices for copper and tin, commodities that were being shipped from as far away as Chile and Malaysia. The tradition persists today as a vital method for global price discovery, ensuring that the cost of industrial metals remains transparent and regulated.