Aetna and CVS set Medicare prescription plan...

Aetna (AET) and CVS will jointly offer a Medicare prescription drug plan, the latest such arrangement between a health insurer and a drugstore chain. The program's cost will be a $26 monthly plan premium, with no deductible, for generic drugs. Humana began a similar partnership with Wal-Mart (WMT) last year, while Coventry (CVH) has deals with Wal-Mart, Target (TGT) and Walgreen (WAG).