Does corporate diversification reduce shareholder value? Since firms endogenously choose to diversify, exogenous variation in diversification is necessary in order to draw inferences about the causal effect. We examine changes in the within-firm dispersion of industry investment, or diversity.'...

Diversified firms have different values than comparable portfolios of single-segment firms. These value differences must be due to differences in either future cash flows or future returns. Expected security returns on diversified firms vary systematically with relative value. Discount firms...

A sample of firms that focus by divesting at least one segment allows us to investigate the characteristics of segments divested as well as the nature of focusing firms. We find that firms are more likely to divest segments unrelated to the core activities of the firm and that the probability...

In this article, we examine the effect of the imperfect mobility of goods on international risk sharing and, through that, on the investment in risky projects, welfare and growth. We find that the welfare gain of financial market openness is not monotonic with respect to investors' risk aversion...

In this paper, we examine the proposition that both the structures of conglomerate firms and their merger activities evidence a systematic attempt to diversify income sources and reduce the volatility of firms' profits. We test whether firms that are active in one line of business are more...

The paper presents a dynamic portfolio model under currency inconvertibility which rationalizes the recent Egyptian experience of real exchange rate appreciation and currency diversification following the increase in oil exports and the partial financial liberalization that took place after...

This paper assesses the probable impact on S&Ls' profitability and participation in mortgage markets of The Depository Institutions Deregulation and Monetary Control Act of 1980. It tracks inflation-induced secular declines in the value of S&L mortgage holdings between 1965 and 1979 and...

We explore how firms grow by adding products. In contrast to most earlier work on the topic, our conceptual and empirical framework allows for separate treatment of product innovation (vertical differentiation) and diversification (horizontal differentiation). The market context is Japan's...

We provide the first tests to distinguish whether individual investors equally balance their overall portfolios (naïve portfolio diversification--NPD) or engage in naïve buying diversification (NBD)--equally balancing values in same-day purchases of multiple assets. We find NBD in purchases of...

Recent studies have used import data to assess the impact of foreign varieties on prices and welfare for a home country. The reliance on import data has a number of limitations. First, these papers rely on goods categories defined by the Harmonized System. Second, they define varieties using the...