Traders at some of the world’s biggest banks manipulated benchmark foreign-exchange rates used to set the value of trillions of dollars of investments, according to five dealers with knowledge of the practice.
Employees have been front-running client orders and rigging WM/Reuters rates by pushing through trades before and during the 60-second windows when the benchmarks are set, said the current and former traders, who requested anonymity because the practice is controversial. Dealers colluded with counterparts to boost chances of moving the rates, said two of the people, who worked in the industry for a total of more than 20 years.
The behavior occurred daily in the spot foreign-exchange market and has been going on for at least a decade, affecting the value of funds and derivatives, the two traders said. The Financial Conduct Authority, Britain’s markets supervisor, is considering opening a probe into potential manipulation of the rates, according to a person briefed on the matter.
“The FX market is like the Wild West,” said James McGeehan, who spent 12 years at banks before co-founding Framingham, Massachusetts-based FX Transparency LLC, which advises companies on foreign-exchange trading, in 2009. “It’s buyer beware.”
The $4.7-trillion-a-day currency market, the biggest in the financial system, is one of the least regulated. The inherent conflict banks face between executing client orders and profiting from their own trades is exacerbated because most currency trading takes place away from exchanges.
The WM/Reuters rates are used by fund managers to compute the day-to-day value of their holdings and by index providers such as FTSE Group and MSCI Inc. that track stocks and bonds in multiple countries. While the rates aren’t followed by most investors, even small movements can affect the value of what Morningstar Inc. estimates is $3.6 trillion in funds including pension and savings accounts that track global indexes.
One of Europe’s largest money managers has complained about possible manipulation to British regulators within the past 12 months, according to a person with knowledge of the matter who asked that neither he nor the firm be identified because he wasn’t authorized to speak publicly.
The FCA already is working with regulators worldwide to review the integrity of benchmarks, including those used in valuing derivativesand commodities, after three lenders were fined about $2.5 billion for rigging the London interbank offered rate, or Libor. Regulators also are investigating benchmarks for the crude-oil and swaps markets.
“The FCA is aware of these allegations and has been speaking to the relevant parties,” Chris Hamilton, a spokesman for the agency, said of the WM/Reuters rates.
It may be difficult to prosecute traders for market manipulation, as spot foreign exchange, the trading of one currency with another at the current price for delivery within two days, isn’t classified as a financial instrument by regulators, said Arun Srivastava, a partner at law firm Baker & McKenzie LLP in London.
The WM/Reuters rates data are collected and distributed by World Markets Co., a unit of Boston-based State Street Corp., and Thomson Reuters Corp. Bloomberg LP, the parent company of Bloomberg News, competes with New York-based Thomson Reuters in providing news and information, as well as currency-trading systems and pricing data. Bloomberg LP also distributes the WM/Reuters rates on Bloomberg terminals.
State Street hasn’t been alerted to any allegations of wrongdoing involving the rate, said a person with knowledge of the matter.
“The process for capturing this information and calculating the spot fixings is automated and anonymous, and the rates are monitored for quality and accuracy,” State Street said in an e-mailed statement. The data are derived from “multiple execution venues through a streaming rather than solicitation process,” it said.
World Markets states in the methodology posted online that it doesn’t guarantee the accuracy of its rates.
State Street hired London-based Freshfields Bruckhaus Deringer LLP to ensure that the rates comply with the set of draft principles for financial benchmarks published in April by global regulators following the Libor scandal, according to a person briefed on the matter.
Nick Parker, a spokesman for Freshfields, declined to comment. Thomson Reuters referred inquiries to State Street.
Introduced in 1994, the WM/Reuters rates provide standardized benchmarks allowing fund managers to value holdings and assess performance. The rates also are used in forwards and other contracts that require an exchange rate at settlement.
“The price mechanism is the anchor of our entire economic system,” said Tom Kirchmaier, a fellow in the financial-markets group at the London School of Economics. “Any rigging of the price mechanism leads to a misallocation of capital and is extremely costly to society.”
The rates are published hourly for 160 currencies and half- hourly for 21 of them. For the 21 -- major currencies from the British pound to the South African rand -- the benchmarks are the median of all trades in a minute-long period starting 30 seconds before the beginning of each half-hour.
If there aren’t enough transactions between a pair of currencies during the reference period, the rate is based on the median of traders’ orders, which are offers to sell or bids to buy. Rates for the other, less-widely traded currencies are calculated using quotes during a two-minute window.
The benchmarks are based on actual trades or quotes, rather than the bank estimates used to calculate Libor. Still, they’re susceptible to rigging, according to the five traders, who said they had engaged in or witnessed the practice.
While hundreds of firms participate in the foreign-exchange market, four banks dominate, with a combined share of more than 50 percent, according to a May survey by Euromoney Institutional Investor Plc. Deutsche Bank AG, based in Frankfurt, is No. 1, with a 15.2 percent share, followed by New York-based Citigroup Inc. with 14.9 percent, London-based Barclays Plc with 10.2 percent and Zurich-based UBS AG with 10.1 percent.
The traders interviewed by Bloomberg News declined to identify which banks engaged in manipulative practices and didn’t specifically allege that any of the top four firms were involved. Spokesmen for Deutsche Bank, Citigroup, Barclays and UBS declined to comment.
As market-makers, banks execute orders to buy and sell for clients as well as trade on their own accounts.
Companies and asset managers typically ask banks to buy or sell currencies at a specified WM/Reuters fix later in the day, most commonly the 4 p.m. London close. That arrangement is open to abuse, as it gives traders a window in which they can adjust their own positions and try to move the benchmark to boost their profit, three of the dealers said.
Customers often wait until the hour before the 4 p.m. close to place large orders to minimize the opportunity for banks to trade against them, one investor and a trader said.
Index funds, which track baskets of securities from around the world each day, are particularly vulnerable because they need to place hundreds of foreign-exchange trades with banks using WM/Reuters rates, according to two money managers. The funds buy securities to match their holdings to the indexes they are required to track. The issue is most acute at the end of the month, when index-tracker funds invest new money from clients.
By concentrating orders in the moments before and during the 60-second window, traders can push the rate up or down, a process known as “banging the close,” four dealers said.
Three said that when they received a large order they would adjust their own positions knowing that their client’s trade could move the market. If they didn’t do so, they said, they risked losing money for their banks.
One trader with more than a decade of experience said that if he received an order at 3:30 p.m. to sell 1 billion euros ($1.3 billion) in exchange for Swiss francs at the 4 p.m. fix, he would have two objectives: to sell his own euros at the highest price and also to move the rate lower so that at 4 p.m. he could buy the currency from his client at a lower price.
He would profit from the difference between the reference rate and the higher price at which he sold his own euros, he said. A move in the benchmark of 2 basis points, or 0.02 percent, would be worth 200,000 francs ($216,000), he said.
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