Biotech ETFs Remain Bell of the Ball

The iShares Nasdaq Biotechnology ETF (NASDAQGM: IBB), the largest biotechnology exchange traded fund by assets, and its equal-weight rival, the SPDR S&P Biotech ETF (NYSEArca: XBI) have been soaring in recent days and that momentum could prove durable for the remainder of 2017. In August, IBB...