We develop a macroeconomic framework in which firms are large and have market power with respect to both products and labor. Each firm maximizes a share-weighted average of shareholder utilities, which makes the equilibrium independent of price normalization. In a one-sector economy, if returns...

The paper deals with taxation effects on optimal portfolio rules of de fined contribution (DC) and de fined benefi t (DB) pension funds in a continuous-time setting. Following practice, three tax types are considered: on contributions, investment gains and pensions. We focus on the tax effects...

The London Interbank Offered Rate (Libor) is a set of vital benchmark interest rates to which hundreds of trillions of dollars of financial contracts are tied. The rates are set each day via a survey of large banks. In recent years, strange behavior of the rates have caused observers to question...

We consider competition among n sellers when each of them sells a portfolio of distinct products to a buyer having limited slots (or shelf space). We study how bundling affects competition for slots. When the buyer has k number of slots, efficiency requires the slots to be allocated to the best...

We investigate firms' optimal investment timing and capacity decisions in the presence of time-to-build and competition. Due to the uncertainty in time-to-build, the product of the leader who makes the first investment might enter the market later than that of the follower. We show that a firm...

This paper develops a theory of patent portfolios in which firms accumulate an enormous amount of related patents in diverse technology fields such that it becomes impractical to develop a new product that with certainty does not inadvertently infringe on other firms' patent portfolios. We...

In many industrial sectors, firms amass large patents portfolios to reinforce their bargaining position vis a vis competitors. In a context where patents have a pure strategic nature, we discuss how the presence and the effectiveness of a patent system affect firms technological decisions....

We examine how investor demand for leverage shapes asset management fees. In our model, investors' leverage demand generates a cross-section of positive fees even if all managers produce zero risk-adjusted returns. We find support for the model's novel predictions in the sample of the U.S....

An entrant and an incumbent engage in an investment portfolio problem where each chooses how to allocate its research funds across a rival market, where they compete with one another, and a non-rival market, where they do not interact. Allowing for acquisitions distorts both players' incentives...