The EC is investigating the credit default swaps market, examining whether (1) 16 investment banks and Markit, the leading provider of financial information in the CDS market, colluded in order to control financial information, and (2) 9 of the banks and ICE Clear Europe, the leading clearing house for CDS. The Commission will investigate in particular whether the preferential tariffs granted by ICE to the 9 banks have the effect of locking them in the ICE system to the detriment of competitors