This excerpt taken from the ATVI 10-Q filed Aug 4, 2005.
Number of Shares. Subject to the adjustment provisions of Section 8.6 hereof, the aggregate number of Shares which may be issued under Awards under the Plan shall not exceed 18,000,000. No Options to purchase fractional Shares shall be granted or issued under the Plan. For purposes of this Section 2.1, the Shares that shall be counted toward such limitation shall include all Shares issued or issuable under any Award granted under the terms of the Plan.