This excerpt taken from the ATVI 10-Q filed May 8, 2009.
Issuer Repurchase of Equity Securities
The following table provides the number of shares repurchased and average price paid per share during the quarter ended March 31, 2009, and the approximate dollar value of shares that may yet be purchased under our $1 billion stock repurchase program at March 31, 2009 (amounts in millions, except number of shares and per share data).
(1) All purchases were made pursuant to a stock repurchase program, announced on November 5, 2008, authorized by our Board of Directors pursuant to which we may repurchase up to $1 billion of our common stock from time to time on the open market or in private transactions, including structured or accelerated transactions. We will determine the timing and amount of repurchases based on our evaluation of market conditions and other factors. We may suspend or discontinue the stock repurchase program at any time.