The staff at ETFChannel.com discusses an ETF that was outperforming other ETFs in trading on Friday as well as the one that was underperforming other ETFs, plus the components of those ETFs showing particular strength or weakness.

In trading on Friday, the SPDR S&P China ETF (GXC) is outperforming other ETFs, up about 3.5% on the day. Components of that ETF showing particular strength include shares of Yingli Green Energy Holding (YGE), up about 9.3% and shares of Jinkosolar Holdings (JKS), up about 5% on the day.

And underperforming other ETFs Friday is the Gold Miners ETF (GDX), off about 0.9% in Friday afternoon trading. Among components of that ETF with the weakest showing on Friday were shares of Primero Mining (PPP), lower by about 4%, and shares of IAMGOLD (IAG), lower by about 3.2% on the day.

By the Staff of ETFChannel.com