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Comments on CBOE Rulemaking

Self-Regulatory Organizations; Chicago Board Options Exchange, Incorporated; Notice of Filing of Proposed Rule Change and Amendments No. 1 and 2 Thereto Relating to the Nullification and Adjustment of Equity Options Transactions

(Release No. 34-53672; File Nos. SR-CBOE-2005-63)

May 17, 2006 Matthew B. Hinerfeld, Managing Director and Deputy General Counsel, Citadel Investment Group, L.L.C.

Modified: 05/25/2006