Market Vectors ETF Trust - Market Vectors Vietnam ETF (ARCA:VNM), a fund of Van Eck Associates Corporation, acquired an additional 1.1% stake in Petroleum Technical Services Corporation (HASTC:PVS) on December 26, 2012. Market Vectors ETF Trust acquired 3.6 million Petroleum Technical shares. Post transaction, Market Vectors ETF Trust has 19.1 million Petroleum Technical shares.

Market Vectors ETF Trust - Market Vectors Vietnam ETF (ARCA:VNM), a fund of Van Eck Associates Corporation, completed the acquisition of an additional 1.1% stake in Petroleum Technical Services Corporation (HASTC:PVS) on December 26, 2012.