OFT has referred the proposed acquisition of Chi-X Europe Limited by BATS Trading Limited to the Competition Commission as the entities operate the largest Multilateral Trading Facilities in the UK after the London Stock Exchange (LSE). There have not been widespread complaints about the proposal, but OFT feels there is a realistic prospect the two companies might separately have competed more strongly against each other as well as against LSE. (Source: OFT Refers MTF Operator Merger to Competition Commission)