What are the WM/Reuters benchmark rates?
WM/Reuters FX benchmark rates are spot and forward foreign exchange rates used as standard portfolio valuation and performance measurement rates. The WM/Reuters Closing Spot Rate service was introduced in 1994 to provide standard forex rates that would enable portfolio valuations to be compared more accurately against each other and financial benchmarks without accounting for currency differentials.
Refinitiv, “WM/Reuters FX Benchmark Statement: WM/Reuters Closing and Intraday Spot, Forward and NDF Rates,” Pages 2–3. Accessed November 19, 2020.
The initial service offered daily closing spot prices for forty currencies. Since then, the service has grown to include 155 closing spot currencies hourly. Furthermore, hourly intraday prices for spot, forward, and NDF, as well as historical data, are available from WM/Reuters for currency futures and non-deliverable forwards (NDF).
The WM/Reuters benchmark rates are employed in the computations of the most significant equities and bond index compilers. Still, they are also used for other reasons, such as determining benchmark rates for financial derivatives settlement. Additionally, some banks guarantee their customers will trade at WM/Reuters prices.
ESSENTIAL NOTES
Spot and forward exchange rates are benchmarks for portfolio assessment and performance evaluation in the WM/Reuters benchmark rates.
How To Calculate Rates
The five-minute fix period, which runs from two minutes thirty seconds before to two minutes thirty seconds after the fixed time, typically four o’clock in London, is used to calculate the benchmark rates. Bid and offer rates from the order matching system, as well as actual transactions that are conducted, are recorded during these five minutes. Because deals happen in milliseconds, not every trade is recorded; just a sample is. The mid-rate is computed using the median bid and offer, determined using valid rates throughout the fix.
These rates are significant because pension funds own trillions of dollars worth of assets, and money managers value them. Following the public revelation of extensive claims of trader collusion and rate manipulation in 2013, setting the WM/Benchmark rates was subject to close examination.