
Big Biotechs Make a Big Statement
The two most popular biotech ETFs are leading the market this month and making big statements. Before looking at these two, note that they are quite different. The Biotech ETF (IBB) is dominated by large-cap biotechs with the top ten holdings accounting for over 50%. The Biotech SPDR (XBI), on the other hand, is a broad-based ETF with the top ten holdings accounting for less than 25% of the ETF.