Data fragmentation hampers oversight

When the Group of 20 (G-20) nations agreed a package of measures to reform the over-the-counter derivatives market in September 2009, a requirement to report all OTC derivatives to trade repositories looked to be the least controversial – and, arguably, the easiest to achieve. The Depository Trust & Clearing Corporation’s (DTCC) Trade Information Warehouse was already up and running for credit derivatives, and a series of industry-run beauty contests were quickly held to choose a single