Walgreen approves $1B stock repurchase plan

Deerfield, Ill. Walgreen Co. said Wednesday that it has approved the repurchase of up to $1 billion in stock through the end of 2012.

The retailer authorized a buyback of up to $2 billion in stock in October 2009. It finished buying those shares in September. The company had 973.2 million shares on the market as of May 31.