Those who trade in grain and soy complex derivatives are very familiar with speculative position limits. There have been such limits in place since the 1930s. However, many other commodity markets are looking at these for the first time.In their zeal to curb so-called excessive speculation in derivative markets, lawmakers included language in the 2010 Dodd-Frank market reform legislation that directed the U.S. Commodity Futures Trading Commission (CFTC) to establish speculative position limits for exchange-traded and over-the-counter (OTC) derivatives for some 28 different physical commodities. In the wake of the 2008/09 financial crisis and the commodity price volatility that occurred before and during this event, many politicians were qui...