The work of Friedrich Von Hayek contains several testable predictions about the nature of market processes. Vernon Smith termed the most important one the 'Hayek Hypothesis': equilibrium prices and the gains from trade can be achieved in the presence of diffuse, decentralized information, and in...

We study decisions to sell nonexcludable private information in the presence of a trading opportunity. Sell-side agents heighten competition among agents who buy their signals to combine with their own for proprietary trading purposes and thereby promote financial market efficiency. This result...

In this paper, we employ a sequential production setting in order to study the tradeoff between timeliness and accuracy of a signal about productivity. An information externality arises because the upstream agent's information is disseminated to the downstream agent, and affects production...

Aggregation in the presence of data processing lags distorts the information content of data, violating orthogonality restrictions that hold at the individual level. Though the phenomenon is general, it is illustrated here for the life cycle-permanent model. Cross-section and pooled-panel data...

How does the sensitivity of prices to public information changes along a production chain? We examine this question in a setting where prices in a stage affect the cost of next stage firms and also contain information about the unobserved state of the economy. Our results depend on the...

Sudden big price changes are followed by periods of high and persistent volatility. I develop a tractable dynamic rational expectations model consistent with this observation. An infinity of agents possess dispersed information about future dividends and trade in centralized markets. Information...

Attainment of rational expectations equilibria in asset markets calls for the price system to disseminate traders' private information to others. It is known that markets populated by asymmetrically-informed profit-motivated human traders can converge to rational expectations equilibria. This...

We study the Bayesian implementation problem in economies that are divided into groups consisting of two or more individuals with the same information. Our results cover problems like that of allocating public funds among states, regulating activities causing externalities among firms, locating...

We propose a new approach to measuring informed trading in individual securities based on a portfolio optimization model for investors facing information and liquidity shocks. These shocks induce speculative and liquidity-motivated order flow, taking into account the price impact of trading. The...