iShares Nasdaq Biotechnology ETF (NasdaqGS: IBB)
2012: 31.5%
2013: Up 56.5%
Comment: Like BBH, IBB, the largest biotech ETF by assets, sports a large weight to biotech’s Big Four. That has been be recipe for success this year as the two funds are battling for the crown of 2013 best biotech ETF. IBB has been among the standouts in what has been a stellar year for biotech and health care ETFs in general. [Health Care ETFs Prescribe New ETFs]