The London Metal Exchanges publishes two types of open interest reports. Exchange Open Interest (EOI) and Market Open Interest (MOI). Both EOI and MOI are reported in lots by contract, by prompt and in the case of options and TAPOs, by strike and by call or put.
Published daily at the close of business. EOI shows total number of all clearing member “open” positions-ie non-closed out contracts-expressed in lots, per metal.
Day delayed, published daily at close of business. MOI shows total number of all member and all client “open” positions – ie non-closed out contracts-expressed in lots, per metal.