The ratings on CVS Corp. reflect the company's leading position in the favorably regarded drug store industry, a strong financial profile, and the belief that management is committed to maintaining a moderate financial policy. With more than 4,100 units, the company is the nation's top chain drug retailer based on store count and prescriptions dispensed. Prescriptions, which comprise about 63% of the company's revenue, continue to drive growth and should do so well into the future due to an aging population, greater use of pharmaceuticals in outpatient therapy, and the ongoing development of new drug products. CVS operates in 55 of the top 100 pharmacy markets in the U.S. and holds a first or second market share position in 80%