Wednesday's ETF Movers: XBI, SOXX

In trading on Wednesday, the SPDR S&P Biotech ETF (XBI) is outperforming other ETFs, up about 6.3% on the day. Components of that ETF showing particular strength include shares of Puma Biotechnology (PBYI), up about 291.1% and shares of Array Biopharma (ARRY), up about 17.6% on the day.