CME Group Inc.'s lawsuit over U.S. Commodity Futures TradingCommission swap-data rules will undermine efforts to boosttransparency following the 2008 credit crisis, the Depository Trust& Clearing Corp. said.

The suit, filed in federal court on Nov. 8, “threatens todismantle and disrupt the entire regulatory regime statutorilymandated by the Dodd-Frank Act in order to preserve CME's exclusiveaccess to data that it acquires through its role as a derivativesclearing organization,” DTCC General Counsel Larry E. Thompson saidin a letter to the CFTC yesterday.

CME, the Chicago-based exchange operator that runs a swapsclearinghouse, is seeking an injunction against CFTC rules forreporting private trade information, claiming that submissions toso-called swap-data repositories would be redundant. DTCC, based inNew York, is one of the firms given CFTC approval to run datarepositories for interest rate and credit-default swaps, amongother types of trades.