Key trading themes for the week ahead Stock Watch February 18, 2013 10:30 AM Indices covered: S&P/ASX 20 S&P/ASX 200 S&P/ASX 200 Materials XTL Vs XJO XTL Vs XMD XTL Vs XSO Companies covered: BHP Billiton Limited (ASX:BHP) Woodside Petroleum Limited (ASX:WPL) To view the PDF for this presentation, please click here.