As already announced, TOCOM will change the contract trading unit of silver, applicable from the December 2010 contract, from 30 kilograms to 10 kilograms effective on December 24th, 2009.
Consequently, after December 24th, 2009, Standard Combination Order between the October 2010 contract or prior contracts (trading unit at 30 kilograms) and the December 2010 contract or following contracts (trading unit at 10 kilograms) will not be accepted.
On the other hand, Standard Combination Orders between contracts with the same trading unit will be accepted. That is to say, between contracts with a trading unit at 30 kilograms (October 2010 contract and prior contracts) or between contracts with a trading unit at 10 kilograms (December 2010 contract and following contracts).
Example 1:
Combination between February 2010 contract (trading unit at 30 kilograms) and December 2010 contract (trading unit with 10 kilograms) ⇒ will not be accepted as SCO
Example 2:
Combination between April 2010 contract (trading unit at 30 kilograms) and June 2010 contract (trading unit at 30 kilograms) ⇒ will be accepted as SCO
Example 3:
Combination between December 2010 contract (trading unit at 10 kilograms) and February 2011 contract (trading unit at 10 kilograms - to be listed on the 24th of February, 2010) ⇒ will be accepted as SCO
