LBMA Gold Price and LBMA Silver Price Calculation Methodology
LBMA Platinum Price and LBMA Palladium Price Calculation Methodology
The auction process runs on the ICE trading platform which provides real-time order management, separation of house and client orders, live credit limit controls, a full audit history, compliance monitoring tools and advanced straight through processing using ICE’s APIs for trade capture, order entry and surveillance.
The auctions run in rounds of fixed duration. At the start of each round, IBA publishes a price for that round. Participants then have a set amount of time (i.e. 30 seconds) to enter, change or cancel their orders (how much metal they want to buy or sell at that price). At the end of each round order entry is frozen and the system checks to see if the difference between buying and selling (the imbalance) is within the pre-defined imbalance threshold.
If the imbalance is outside of the threshold at the end of a round, then the auction is not balanced, the price is adjusted and a new round starts.
If the imbalance is within the threshold then the auction is finished and the price is set. Any imbalance is shared equally between all direct participants (even if they did not place orders or did not log in) and the net volume for each participant trades at the final price.

The final price is then published as the LBMA Gold Price, LBMA Silver Price, LBMA Platinum Price, or LBMA Palladium Price in U.S. Dollars, and also converted into British pounds and euros using prevailing spot foreign exchange rates from when the final round ended. N.B. the precious metals auctions settle against U.S. dollars only. The benchmarks in British pounds and euros are not tradeable directly through the auction.
The prices during each auction are determined by an algorithm that takes into account current market conditions and the activity in the auction. Each auction is actively supervised by IBA staff.
Licensing
The LBMA Precious Metal Prices benchmark settings are available under licence from IBA (including for valuation and pricing activities and for use in transactions). Prospective licensees should contact IBA’s licensing team at [email protected] for information on how to obtain a usage licence from IBA.
Please read IBA’s Benchmark and Other Information Notice and Disclaimer.
