We study how securities and trading mechanisms can be designed to optimally mitigate the adverse impact of market imperfections on liquidity. Asset owners seek to obtain liquidity by selling their claims on future cash-flows, on which they have private information. Our analysis encompasses both...

Speculative industries exploit novel technologies subject to two risks. First, there is uncertainty about the fundamental value of the innovation: is it strong or fragile? Second, it is difficult to monitor managers, which creates moral hazard. Because of moral hazard, managers earn agency rents...

Bonds are traded in over-the-counter markets, where opacity and fragmentation imply large transaction costs for retail investors. Is there something special about bonds, in contrast to stocks, precluding transparent limit-order markets? Historical experience suggests this is not the case. Before...

The Internet reduces the cost of exchanging information. Electronic markets exploit this opportunity to enable investors to place quotes at very little cost and compete with incumbent trading systems. Does this quasi–free entry situation lead to competitive liquidity supply? We analyze trades...