London's gold benchmark experienced large, unpredictable fluctuations after some banks left the auction that sets the price relied upon by the $5 trillion-a-year bullion market, according to a Reuters analysis of trading data. The benchmark is meant to be a fair and accurate daily snapshot of the fast-moving "spot" market and is used by gold producers and consumers around the world to price contracts.
Its level is set by the London Bullion Market Association (LBMA) Gold Price auction, which sees big banks and brokers electronically input their trading orders, with an algorithm matching buyers to sellers and setting the price. But trading volumes fell sharply after April 10, when four of the 14 participating banks and brokers stopped taking part after the auction's administrator, Intercontinental Exchange (ICE), introduced a requirement to clear that meant participants had to modify their own IT systems and procedures.
Lower liquidity - which fuels volatility - led to the benchmark diverging more widely from the underlying spot price, according to the analysis of ICE and trading data, leaving gold buyers and sellers around the world with large unexpected gains or losses. In the three weeks after clearing was launched, average trading volumes were a quarter lower than in the previous three weeks and the average difference from the spot price tripled to 87 cents from 29 cents, the analysis shows.
The biggest divergence, on April 11, saw the auction settle $12.20 - or 1 percent - away from the spot price. Even excluding this large swing, the average divergence in the period rose to 42 cents. Volumes have, however, recovered since the start of May and divergences have narrowed. Market and banking sources have told Reuters that ICE had moved fast to introduce clearing into the benchmark before the London Metal Exchange (LME) launched a rival set of cleared gold futures contracts in July, even though not all participants were ready to use the service.
Four sources familiar with the matter said that ICE was warned by at least two participating banks that the loss of those banks who were not ready to handle clearing would make the benchmark significantly more volatile. The LBMA referred requests for comment about the price divergences and the effect of the banks leaving the benchmark to ICE.
ICE declined to comment. Clearing - where an exchange acts as an intermediary to guarantee and settle trades - is regarded as a necessary progression for the gold trade as tighter regulatory capital requirements increase the cost of trading off-exchange. ICE has said it will widen participation in the auction by making it easier for newcomers to join, and will ultimately boost liquidity and reduce volatility. Indeed, quantitative trading firm Jane Street Global Trading joined the auction on May 15.
When clearing for the auction was launched last month, four banks - China Construction Bank, UBS, Standard Chartered and Societe Generale - ceased participating. The reason, according to 10 banking sources and an LBMA source, is that they did not have the necessary IT systems and procedures in place in time, and were thus suspended from the auction by ICE.