CAMBRIDGE, Mass.--(BUSINESS WIRE)--Genzyme Corp. (NASDAQ: GENZ) today announced that its Board of Directors has voted to pursue several actions to increase shareholder value. The company will initiate a $2 billion stock buyback, under which $1 billion of stock will be repurchased in the near term and financed with debt. The additional $1 billion of stock will be repurchased during the next 12 months.