Following up on our initial comments at the Tunney Act proceeding of the proposed merger between Sprint and T-Mobile, we discuss DOJ's criticisms of these comments, explaining why these criticisms are baseless. Moreover, using evidence from the NY v. Deutsche Telecom trial, we provide new...

We present a model where producers of complementary goods have the option to practice mixed bundling. In the first stage of a two-stage game, firms choose between a mixed bundling and a non- bundling strategy. In the second stage, firms choose prices. We show that mixed bundling is a dominant...

We examine the incentives of firms to form coalitions based on adherence to common technical standards. Many network goods as well as non-network goods with close complements exhibit quot;network externalitiesquot; -- i.e., the value of such goods increases with the size of sales of compatible...

This note shows that a monopolist facing any linear demand system for n goods and no fixed costs will produce positive quantities of all goods as long as demand is positive for all goods when all are sold at marginal cost. This is in contrast with the traditional view that, in general, a...

This paper develops some important concepts with respect to networks and compatibility. We note that the familiar concept of complementarity lies at the heart of the concept of compatibility. We further note the distinction between two-way networks (e.g., telephones, railroads, the Internet) and...

Liquidity plays a crucial role in financial exchange markets. Markets typically create liquidity through spatial consolidation with specialist/market makers matching orders arriving at different times. However, continuous trading systems have an inherent weakness in the potential for...

In developing countries, mobile telecom networks have emerged as major providers of financial services, bypassing the sparse retail networks of traditional banks. We analyze a large individual-level data set of mobile money transactions in Tanzania to provide evidence of the impact of mobile...

This paper summarizes the responses to a questionnaire sent to equity traders through TraderForum of the Institutional Investor. The respondents manage in total a very significant percentage of equity assets under management in the United States. The focus of the questions was the extent of the...

Non-uniform pricing equilibria are shown to dominate uniform pricing equilibria in free entry, monopolistically competitive markets with identical consumers. The non- uniform pricing equilibrium is welfare optimal. Comparisons of Cournot and non-uniform pricing equilibria in terms of the...

Despite its power as a transactions network, scant attention has been given to incorporating an electronic call into a major market center such as the NYSE or Nasdaq. An electronic call clears the markets for all assets at predetermined points in time. By bunching many transactions together, a...