Shares of Genzyme Surging On Possible Merger Talks

Shares of biotech company Genzyme (GENZ) are rallying $10.50 to $64.67, on word that the company was approached by Sanofi-Aventis (SNY). Genzyme shares at 1:36 pm, are currently the best performing stock in the S&P 500 index on a percentage basis.