This program is the result of an intensive review, which considered the Group's capital needs from legal, regulatory, credit rating and economic capital perspectives. In particular, to ensure the continued success of its Eurex central counterparty and Clearstream custody businesses, which account for more than half of Group sales and operating cash flow, Deutsche Börse believes it is necessary that the Group maintains strong "AA" credit ratings. Deutsche Börse will continue to review its capital requirements as part of the company's regular planning process.