Tuesday's ETF Movers: GDX, XBI

In trading on Tuesday, the Gold Miners ETF (GDX) is outperforming other ETFs, up about 1.1% on the day. Components of that ETF showing particular strength include shares of B2gold (BTG), up about 5.3% and shares of Centerra Gold (CG.CA), up about 5.1% on the day.