Back in January, the International Swaps and Derivatives Association (ISDA) and Securities Industry and Financial Markets Association (SIFMA) filed a lawsuit against the Commodity Futures Trading Commission's (CFTC) new position limit rule under the new Dodd-Frank statute passed in 2010. Late on Friday, 28 September, the U.S. District Court for the District of Columbia vacated the rule and sent the process back to the CFTC.The Dodd-Frank position limit rule applied to 28 commodities, expanded from nine.The final rule established two types of speculative limits:Spot-month position limits apply in the period immediately before delivery obligations are incurred for physical delivery contracts or a period immediately before contracts are liqu...