We develop a parsimonious model to study the equilibrium structure of over-the-counter securities markets. We show that regulations aimed at reducing counterparty risk and improving liquidity can be ineffcient. Such regulations have a direct positive effect on entry in those markets, thus...

We develop a parsimonious model to study the effect of regulations aimed at reducing counterparty risk on the structure of over-the-counter securities markets. We find that such regulations promote entry of dealers, thus fostering competition and lowering spreads. Greater competition, however,...

We develop a parsimonious model to study the equilibrium structure of financial markets and its efficiency properties. We find that regulations aimed at improving market outcomes can cause inefficiencies. The welfare benefit of such regulation stems from endogenously improving market access for...