Designated Contract Market Rules : 20390

Organization: ELX

Description: Modification of the minimum block trade sizes for the 5, 10, and 30 year (including Ultrabond) US Treasury futures contracts from the current levels of 1,000 in the 5 and 10 year notes and 500 in the bonds to 300 contracts for each.

Official Receipt Date: 2011-01-07 00:00:00

Status: Certified

Date: 2011-01-12 00:00:00

Remarks: