We study optimal auctions when contacting prospective bidders is costly and the biddersï¾’ values are correlated. Although full surplus extraction is in general impossible, we can construct a search mechanism that fully extracts the surplus with an arbitrarily high probability.

We study the design of profit maximizing single unit auctions under the assumption that the seller needs to incur costs to contact prospective bidders and inform them about the auction. With independent biddersï¾’ types and possibly interdependent valuations, the sellerï¾’s problem can...

We investigate the interaction between financial structure and managerial compensation in the context of a managerial entrenchment model in the spirit of Shleifer and Vishny (1989). We show that risky debt affects both the probability of managerial replacement and the manager's wage if he is...

This paper shows how competing firms can facilitate tacit collusion by making passive investments in rivals. In general, the incentives of firms to collude depend in a complex way on the whole set of partial cross ownership (PCO) in the industry. We establish necessary and sufficient conditions...

This paper examines the effects that passive investments in rival firms have on the incentives of firms to engage in tacit collusion. In general, these incentives depend in a complex way on the entire partial cross ownership (PCO) structure in the industry. We establish necessary and sufficient...