At least 18 biotechs and pharmas reported earnings last week. Two companies - Endo Health Solutions Inc. (NASDAQ:ENDP) and Salix Pharmaceuticals Inc. (NASDAQ:SLXP) - beat the Street's EPS estimates and announced acquisitions. Endo added 37% last week after it said it would acquire Canadian specialty pharma Paladin Labs Inc. (TSX:PLB) (see B5). Salix gained 15% after announcing plans to acquire fellow gastrointestinal company Santarus Inc. (NASDAQ:SNTS) (see A17). Santarus, which also reported strong earnings last week, closed up 35% on the week.

Cancer diagnostics company Genomic Health Inc. (NASDAQ:GHDX) jumped 21% last week after beating the Street's EPS and revenue estimates.