Since the 2008 global food crisis, and with the new price surge in 2010-2011, agricultural commodity markets have been at the heart of the world economic concerns. It is likely that several fundamental factors (crop failures, extreme weather events, biofuel development, emerging economies...

This paper investigates the causality between prices and index-based trading activity for twelve grain, livestock, and other soft commodity futures markets. We use panel Granger causality estimations based on SUR systems and Wald tests with market-specific bootstrap critical values. This...