3 Biotech Stocks With Virtual Monopolies

3 Biotech Stocks With Virtual Monopolies

Source: 
Motley Fool
snippet: 

Three biotech stocks that have profited tremendously from their virtual monopolies are Alexion Pharmaceuticals (NASDAQ: ALXN)BioMarin Pharmaceutical (NASDAQ: BMRN), and Vertex Pharmaceuticals (NASDAQ: VRTX). Do these biotechs' market positions make them winners for investors over the long run?