Delisting Butterfly Strategies on E-mini Equity Options - Effective Friday, October 26, 2007

Market Data Advisory Notices

To	Market Data Distributors
From	Market Data Operations
Subject	Delisting Butterfly Strategies on E-mini Equity Options - Effective Friday, October 26, 2007
Notice Date	2007-10-17
Notice Number	Q2007-267
Effective Date	2007-10-26
Effective at the close of business on *Friday, October 26, 2007,* all butterfly strategies (Strategy Type Code BO) on E-mini equity options (E-mini Nasdaq 100, E-mini S&P 500 and E-mini Midcap 400 options) will be delisted.