Pairwise-Difference Estimation of a Dynamic Optimization Model

We develop a new estimation methodology for dynamic optimization models with unobserved shocks and deterministic accumulation of the observed state variables. Investment models are an important example of such models. Our pairwise-difference approach exploits two common features of these models: (1) the monotonicity of the agent's decision (policy) function in the shocks, conditional on the observed state variables; and (2) the state-contingent nature of optimal decision making which implies that, conditional on the observed state variables, the variation in observed choices across agents must be due to randomness in the shocks across agents. We illustrate our procedure by estimating a dynamic trading model for the milk production quota market in Ontario, Canada.     

WHEN DO CONSUMERS SEARCH?*

This paper provides empirical evidence relating search to price movements. We measure consumer search directly from traffic statistics for web sites that report gasoline prices. We show empirically that consumers search more as prices rise than they do when prices fall. Asymmetric search patterns have consequences for price behavior. Our findings indicate that retail margins are squeezed by increased search. In addition, we show that there is more price dispersion when prices are falling than when prices are either stable or rising. Our results provide a search‐based explanation for the ‘rockets and feathers’ phenomenon of asymmetric price adjustment.     

Do Mergers Improve Information? Evidence from the Loan Market

We examine the informational effects of M&As by investigating whether bank mergers improve banks' ability to screen borrowers. By exploiting a data set in which we observe a measure of a borrower's default risk that the lenders observe only imperfectly, we find evidence of these informational improvements. Mergers lead to a closer correspondence between interest rates and individual default risk: after a merger, risky borrowers experience an increase in the interest rate, while nonrisky borrowers enjoy lower interest rates. These informational benefits appear to derive from improvements in information processing resulting from the merger, rather than from explicit information sharing on individual customers among the merging parties. Our evidence suggests that part of these informational improvements stem from the consolidated banks using "hard" information more intensively.     

PUBLIC FINANCE AND INDIVIDUAL PREFERENCES OVER GLOBALIZATION STRATEGIES

Do preferences toward globalization strategies vary across public‐finance regimes? In this paper, we use data on individual preferences toward immigration and trade policy to examine how pre‐tax and post‐tax cleavages differ across globalization strategies and state fiscal jurisdictions. High exposure to immigrant fiscal pressures reduces support for freer immigration among U.S. natives, especially the more skilled. The magnitude of this post‐tax fiscal cleavage is comparable to the pre‐tax labor‐market effects of skill itself. There is no public‐finance variation in opinion over trade policy, consistent with U.S. trade policy having negligible fiscal‐policy impacts. Public finance thus appears to shape opinions toward globalization strategies.     

Market Valuation and Merger Waves

Does valuation affect mergers? Data suggest that periods of stock merger activity are correlated with high market valuations. The naïve explanation that overvalued bidders wish to use stock is incomplete because targets should not be eager to accept stock. However, we show that potential market value deviations from fundamental values on both sides of the transaction can rationally lead to a correlation between stock merger activity and market valuation. Merger waves and waves of cash and stock purchases can be rationally driven by periods of over‐ and undervaluation of the stock market. Thus, valuation fundamentally impacts mergers.     

The Market for Mergers and the Boundaries of the Firm

We relate the property rights theory of the firm to empirical regularities in the market for mergers and acquisitions. We first show that high market-to-book acquirers typically do not purchase low market-to-book targets. Instead, mergers pair together firms with similar ratios. We then build a continuous-time model of investment and merger activity combining search, scarcity, and asset complementarity to explain this like buys like result. We test the model by relating like-buys-like to search frictions. Search frictions and assortative matching vary inversely, supporting the model over standard explanations.     

On Intraday Risk Premia

This article presents a framework for analyzing the dynamic effects of anticipated large demand pressures on asset risk premia. We show that large institutions who can time their entry into the market will trade either at the open, or during periods of unusual demand pressures. We show that if these institutions do enter later in the day, they trade in the same direction as institutions which provide liquidity continuously; institutions therefore appear to exhibit “herding” behavior. We also explore how changing the uncertainty of demand pressures late in the day affects trading costs throughout the day.