Upper and Lower Bounds of Put and Call Option Value: Stochastic Dominance Approach

Applying stochastic dominance rules with borrowing and lending at the risk-free interest rate, we derive upper and lower values for an option price for all unconstrained utility functions and alternatively for concave utility functions. The derivation of these bounds is quite general and fits any kind of stock price distribution as long as it is characterized by a “nonnegative beta.” Transaction costs and taxes can be easily incorporated in the model presented here since investors are not required to revise their portfolios continuously. The “price” that is paid for this generalization is that a range of values rather than a unique value is obtained.     

A Theory of Pyramidal Ownership and Family Business Groups

We provide a new rationale for pyramidal ownership in family business groups. A pyramid allows a family to access all retained earnings of a firm it already controls to set up a new firm, and to share the new firm's nondiverted payoff with shareholders of the original firm. Our model is consistent with recent evidence of a small separation between ownership and control in some pyramids, and can differentiate between pyramids and dual‐class shares, even when either method can achieve the same deviation from one share–one vote. Other predictions of the model are consistent with both systematic and anecdotal evidence.     

Economic Evaluation of Voting Power of Common Stock

This paper presents an economic evaluation of common stock voting rights. An index of relative voting rights inequality for different classes of stock of the same corporation is constructed and the empirical relationship between the market premium on a superior-voting stock and the voting inequality index is examined. In only three out of the 25 cases could investors have arbitraged between the two classes of stock, although in one case the arbitrage opportunity persisted for several months.     

Okun's Law: Fit at 50?

This paper asks how well Okun's Law fits short‐run unemployment movements in the United States since 1948 and in 20 advanced economies since 1980. We find that Okun's Law is a strong relationship in most countries, and one that is fairly stable over time. Accounts of breakdowns in the Law, such as the emergence of “jobless recoveries,” are flawed or exaggerated. We also find that the coefficient in the relationship—the effect of a 1% change in output on the unemployment rate—varies substantially across countries. This variation is partly explained by idiosyncratic features of national labor markets, but it is not related to differences in employment protection legislation.     

Learning to Wait: A Laboratory Investigation

Human subjects decide when to sink a fixed cost C to seize an irreversible investment opportunity whose value V is governed by Brownian motion. The optimal policy is to invest when V first crosses a threshold V * = (1 + w *) C , where the wait option premium w * depends on drift, volatility, and expiration hazard parameters. Subjects in the Low w * treatment on average invest at values quite close to optimum. Subjects in the two Medium and the High w * treatments invested at values below optimum, but with the predicted ordering, and values approached the optimum by the last block of 20 periods.     

The Evolution of a Financial Crisis: Collapse of the Asset‐Backed Commercial Paper Market

This paper documents “runs” on asset‐backed commercial paper (ABCP) programs in 2007. We find that one‐third of programs experienced a run within weeks of the onset of the ABCP crisis and that runs, as well as yields and maturities for new issues, were related to program‐level and macro‐financial risks. These findings are consistent with the asymmetric information framework used to explain banking panics, have implications for commercial paper investors’ degree of risk intolerance, and inform empirical predictions of recent papers on dynamic coordination failures.     

Information technology investment and firm performance in US retail trade

We examine the relationship between investments in information technology (IT) and retail firm performance. We use untapped firm and establishment micro data from the Censuses of Retail Trade and the Assets and Expenditures Survey. We show that large firms account for most retail IT investment, employment, and establishment growth. We find evidence of a significant relationship between IT investment intensity and productivity growth.