CORPORATE EVENT: Valero Energy Corp. (VLO) 2 for 1 Stock Split 12/16/05

Clearing House Advisory Notices

To	Clearing Member Firms
From	Clearing House Department
Subject	CORPORATE EVENT: Valero Energy Corp. (VLO) 2 for 1 Stock Split 12/16/05
Notice Date	2005-12-07
Notice Number	05-282
Effective Date	2005-12-16
Valero Energy Corporation (VLO) has announced a 2 for 1 stock split. The ex-distribution date is December 16, 2005. Opening positions and start of day prices for December 16, 2005 will be based on final position and settlement prices from Thursday, December 15, 2005. This corporate action will be coordinated with the Options Clearing Corporation. For the full text of this advisory . . .