Robert Z. Aliber, Bhagwan Chowdhry, Shu Yan; Some Evidence that a Tobin Tax on Foreign Exchange Transactions May Increase Volatility *, European Finance Re

In almost every area of empirical finance, researchers confront multiple tests. One high-profile example is the identification of outperforming investment managers, many of whom beat their benchmarks purely by luck. Multiple testing methods are designed to control for luck. Factor selection is another glaring case in which multiple tests are performed, but numerous other applications do not receive as much attention. One important example is a simple regression model testing five variables. In this case, because five variables are tried, a t-statistic of 2.0 is not enough to establish significance. Our paper provides a guide to various multiple testing methods and details a number of applications. We provide simulation evidence on the relative performance of different methods across a variety of testing environments. The goal of our paper is to provide a menu that researchers can choose from to improve inference in financial economics.

The tension between efficiency and equilibrium is a central feature of economic systems. We examine this tradeoff in a network game with a unique Nash equilibrium in which agents can achieve a higher payoff by following a “collaborative norm.” Subjects establish and maintain a collaborative norm in the circle, but the norm weakens with the introduction of one hub connected to everyone in the wheel. In complex and asymmetric networks of 15 and 21 nodes, the norm disappears and subjects' play converges to Nash. We provide evidence that subjects base their decisions on their degree, rather than the overall network structure.

[We study the share privatization process in China to investigate whether and how the removal of market frictions is associated with efficiency gains. Prior to the reform, domestic A-shares were divided into tradable and non-tradable shares. As a result of the reform, holders of non-tradable shares compensated holders of tradable shares in order to make their shares tradable. We show that size is positively associated with both the gain in risk sharing and the price impact of more shares coming on the market as a result of the reform. Our study highlights the role of risk sharing in China's share issue privatization process.]

We propose a model with local spatial markets and heterogeneous agents to understand and evaluate the geographic expansion of bank branches after banking deregulation in Thailand. The model features heterogeneity in financial frictions across regions, with the costs of accessing credit and deposits depending on the distance from the nearest branch. Disciplined by micro estimates of the effects of branch openings, the model reproduces salient regional and aggregate patterns concerning occupational choice, financial access, and inequality. We apply the model to study two counterfactual financial sector policies in distant markets, one subsidizing branches and the other subsidizing household deposits.

In this paper, we examine the effect of credit defaults swaps (CDS) initiation on reference firms' cost management strategies. CDS contracts provide insurance protection for creditors, inducing a shift in bargaining power from borrowers to creditors and an excessive incidence of bankruptcy. Anticipating more intransigent creditors in debt renegotiations and higher bankruptcy risk, CDS firms are incentivized to mitigate risk through decreasing cost stickiness after CDS initiation, as cost stickiness lowers liquidity and triggers early covenant violations. We find that, on average, CDS initiation is associated with a decline in reference firms' cost stickiness. This association is more pronounced for less liquid, financially distressed, and lower credit quality firms. We also find that CDS firms with a reduction in cost stickiness will exhibit lower future bankruptcy risk than CDS firms without such as reduction in stickiness. Collectively, our findings suggest that the CDS-induced “empty creditor problem” causes reference firms to undertake more conservative cost management practices to alleviate downside risk.

Using a comprehensive sample of U.S. mutual funds from 1992 to 2004, we find strong evidence that investment bank-affiliated funds underperform unaffiliated funds. Consistent with the conflict of interest hypothesis, we find that affiliated funds hold disproportionately large amounts of stocks of their initial public offering and seasoned equity offering clients. Moreover, worse-performing clients are more likely to be held by affiliated funds. Our results are robust to alternative risk adjustments, portfolio weighting schemes, and regression methodologies. Overall, our findings are consistent with the idea that investment banks use affiliated funds to support underwriting business at the expense of fund shareholders.

This study investigates whether extensive disclosure reduces managerial expropriation of corporate resources by examining the potential effects of enhanced reporting on the values of cash assets and investment ventures, respectively. We uncover evidence that liquid asset holdings are valued at a discount by firms with fewer disclosure practices than their more transparent counterparts. Moreover, disclosure activity substantially improves the value of cash assets in excess of requirements for operations and investment. These findings suggest that detailed reporting facilitates the scrutiny and discipline of capital markets, thus preventing the diversion of cash reserves. In further support of the disciplinary power of greater disclosure, we find that value-destroying projects, through internal capital investment and external acquisitions, are concentrated in firms adopting opaque disclosure policies. Collectively, our results support the premise that extensive disclosure impairs insiders' abilities to utilize corporate resources in a self-serving manner. Data Availability: Data are available from public sources indicated in the text..