Israeli Shekel Calendar Spreads Algorithm Change

Market Data Advisory Notices

To	Quote Vendors
From	Market Vendors
Subject	Israeli Shekel Calendar Spreads Algorithm Change - Effective August 3, 2008
Notice Date	2008-07-31
Notice Number	Q2008-152
Effective Date	2008-08-03
Effective Sunday, August 3, (trade date Monday, August 4), to align the FX futures calendar spreads matching behavior, the allocation algorithm for the Israeli Shekel calendars will be changed from FIFO (F ) to Currency Calendars (C ). With this change, all FX futures calendar spreads will use C. The allocation algorithm is defined in FIX tag 1142-MatchAlgorithm, in the FIX/FAST Security Definition message (35=d). Please contact Market Data Operations (MDO) at mdo@cmegroup.com, if you have any questions concerning this notice.