Weekly ETF Leaders and Laggards: BBH, GLDX

The Biotech ETF (BBH) outperformed other ETFs this week, up about 2.3%. Components of that ETF showing particular strength this week include shares of Vertex Pharmaceuticals (VRTX), up about 50.6% and shares of Acorda Therapeutics (ACOR), up about 28.1% on the week.