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Market reaction to earnings news: A unified test of information risk and transaction costs

Journal of Accounting and Economics 2013 56(2-3), 251-266 open access
We examine how information risk and transaction costs influence the initial and subsequent market reaction to earnings news. We find that the initial market reaction is higher per unit of earnings surprise for higher information risk firms (information content effect). Furthermore, it is information risk that induces transaction costs that limit the initial market reaction and lead to higher subsequent drift (transaction costs effect). Information risk does not have an effect on drift beyond that achieved through transaction costs. Our findings highlight the importance of understanding the linkage between information risk and transaction costs in price discovery around public disclosure.

Randomization and Ambiguity Aversion

Econometrica 2020 88(3), 1159-1195 open access
We propose a model of preferences in which the effect of randomization on ambiguity depends on how the unknown probability law is determined. We adopt the framework of Anscombe and Aumann (1963) and relax the axioms. In the resulting representation of the individual's preference, the individual has a collection of sets of priors <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mi mathvariant="script">M</a:mi> </a:math>. She believes that before she moves, nature has chosen an unknown scenario (a set of priors) from <d:math xmlns:d="http://www.w3.org/1998/Math/MathML" display="inline"> <d:mi mathvariant="script">M</d:mi> </d:math>, and from that scenario, nature will choose a prior after she moves. The representation illustrates how randomization may partially eliminate the effect of ambiguity.

International stock market leadership and its determinants

Journal of Financial Stability 2017 33, 150-162 open access
We study time-varying price leadership between international stock markets using a Markov switching causality model. We demonstrate variations in the causality pattern over time, with the US being the dominant country in causing other markets. We examine the factors which determine a country’s role in the causal relationship. For country-specific factors, we show that trades openness increases price leadership. We also find that the lead–lag relationship between the stock markets is weaker during crisis periods, confirming the “wake-up call” hypothesis, with markets and investors focusing substantially more on idiosyncratic, country-specific characteristics during the crisis.

The Chinese Warrants Bubble: Evidence from Brokerage Account Records

Review of Financial Studies 2021 34(1), 264-312 open access
We use brokerage account records to study trading during the Chinese put warrants bubble and find evidence consistent with extrapolative theories of speculative asset price bubbles. We identify the event that started the bubble and show that investors engaged in a form of feedback trading based on their own past returns. The interaction of feedback trading with the precipitating event caused additional buying and price increases in a feedback loop, and estimates of the trading volume due to this mechanism explain prices and returns during the bubble.

The impacts of federal judge ideology on auditor litigation risk and auditor behavior

Contemporary Accounting Research 2024 41(3), 1608-1638 open access
In this paper, we investigate whether federal judge ideology, ceteris paribus, affects auditor litigation risk and auditor behavior. We find that auditors whose client firms are in jurisdictions dominated by liberal judges are more likely to be sued and make higher payouts to plaintiffs when sued. Furthermore, these client firms are more likely to receive going‐concern opinions and pay higher audit fees. Finally, we find no evidence that the quality of audited financial statements is affected by judge ideology. The evidence documented in this paper indicates that federal judge ideology affects auditor litigation risk and some aspects of auditor behavior.

Market Development, Information Diffusion, and the Global Anomaly Puzzle

Journal of Financial and Quantitative Analysis 2023 58(1), 104-147 open access
Previous literature finds anomalies are at least as prevalent in developed markets as in emerging markets; namely, the global anomaly puzzle. We show that while market development and information diffusion are linearly related, information diffusion has a nonlinear impact on anomalies. This is consistent with theoretical developments concerning the process of information diffusion. In extremely low-efficiency regimes, without newswatchers sowing the seeds of price discovery and ensuring the long-run convergence of price to fundamentals, initial mispricing and subsequent correction will not occur. The concentration of emerging countries in low-efficiency regimes provides an explanation to the puzzle.

Bank misconduct and online lending

Journal of Banking & Finance 2020 116, 105822 open access
We introduce a high quality proxy for bank misconduct that is constructed from Consumer Financial Protection Bureau (CFPB) complaint data. We employ this proxy to measure the impact of bank misconduct on the expansion of online lending in the United States. Using nearly complete loan and application data from the online lending market, we demonstrate that bank misconduct is associated with a statistically and economically significant increase in online lending demand at the state and county levels. This result is robust to the inclusion of bank credit supply shocks and holds for both broader and more narrowly-defined bank misconduct measures. Furthermore, we show that this effect is strongest for lower rated borrowers and weakest in states with high levels of generalized trust.