Among the many reforms in the aftermath of the financial crisis is the agreement among international regulators that all over-the-counter (OTC) derivatives contracts should be reported to trade repositories. The goal is to help market participants and regulators gain a better understanding of the extent and distribution of risk taking in financial markets. G-20 leaders committed to this and other improvements to financial market infrastructure (we described the move to central clearing parties (CCPs) in earlier posts). But, unlike the shift to CCPs, trade repositories seem very unlikely to meet officials’ lofty aspirations in the next few years...