WM/Reuters FX Benchmark

A set of foreign exchange benchmark rates calculated and published at fixed times throughout the day, with the most widely used fixing occurring at 4:00 PM London time (known as the London fix). The WM/Reuters rates are calculated using a methodology based on actual trade data and quotes collected during a window around the fixing time. These benchmarks are used globally by fund managers, pension funds, and corporations to value portfolios and settle international transactions.