Department of Finance

ABSTRACT Testing the hypothesis that international equity market correlation increases in volatile times is a difficult exercise and misleading results have often been reported in the past because of a spurious relationship between correlation and volatility. Using “extreme value theory” to model the multivariate distribution tails, we derive the distribution of extreme correlation for a wide class of return distributions. Empirically, we reject the null hypothesis of multivariate normality for the negative tail, but not for the positive tail. We also find that correlation is not related to market volatility per se but to the market trend. Correlation increases in bear markets, but not in bull markets.

There have long been conflicting expectations of the nature of companies’ responsibilities to society. However, for those businesses that do undertake what might be termed “corporate social responsibility”, what is actually socially responsible behaviour as opposed to management of corporate image management or other activity aimed predominantly at business benefits? This article reviews definitions of corporate social responsibility from both practice and the literature and looks at theories to explain why such behaviour takes place. The literature has strong divides between normative or ethical actions and instrumental activities. The article concludes by posing the question of when instrumental activities become business activities rather than largely social responsibility.

Unlike Dutch auction repurchases and tender offers, open‐market repurchase programs do not precommit firms to acquire a specified number of shares. In a sample of 450 programs from 1981 to 1990, firms on average acquire 74 to 82 percent of the shares announced as repurchase targets within three years of the repurchase announcement. We find that share repurchases are negatively related to prior stock price performance, suggesting that firms increase their purchasing depending on its degree of perceived undervaluation. In addition, repurchases are positively related to levels of cash flow, which is consistent with liquidity arguments.

ABSTRACT Firms in bilateral relationships are likely to produce or procure unique products—especially when they are in durable goods industries. Consistent with the arguments of Titman and Titman and Wessels, such firms are likely to maintain lower leverage. We compile a database of firms' principal customers (those that account for at least 10% of sales or are otherwise considered important for business) from the Business Information File of Compustat and find results consistent with the predictions of this theory.

The investment role of precious metals in financial markets is investigated by analysis of daily data for gold, platinum, and silver from 1976 to 2004. All three precious metals have low correlations with stock index returns, which suggests that these metals may provide diversification within broad investment portfolios. Moreover, the data reveal that all three precious metals have some hedging capability, particularly during periods of "abnormal" stock market volatility. Financial portfolios that contain precious metals perform significantly better than standard equity portfolios.

ABSTRACT We investigate whether the media plays a role in corporate governance by disseminating news. Using a comprehensive data set of corporate and insider news coverage for the 2001–2012 period, we show that the media reduces insiders’ future trading profits by disseminating news on prior insiders’ trades available from regulatory filings. We find support for three economic mechanisms underlying the disciplining effect of news dissemination: the reduction of information asymmetry, concerns regarding litigation risk, and the impact on insiders’ personal wealth and reputation. Our findings provide new insights into the real effect of news dissemination.

ABSTRACT This paper develops a model in which managers can signal their firms' true values by using either a dividend or a stock repurchase or both. The authors explain a number of stylized facts about these cash‐disbursement mechanisms, particularly those concerning the relative magnitudes of stock price responses to dividends and repurchases. Most importantly, they explain why a stock repurchase elicits a significantly higher price response, on average, than a dividend announcement.

Refined economic value added (REVA) provides an analytical framework for evaluating operating performance measures in the context of shareholder value creation. Economic value added (EVA) performs quite well in terms of its correlation with shareholder value creation, but REVA is a theoretically superior measure for assessing whether a firm's operating performance is adequate from the standpoint of compensating the firm's financiers for the risk to their capital. In this article, comprehensive statistical analysis of both REVA and EVA is used to estimate their correlation with and their ability to predict shareholder value creation. REVA statistically outperforms EVA in this regard. Moreover, the realized returns for the 1988–92 period for the top 25 REVA firms were higher than the realized returns for the top 25 EVA firms.

This article proposes a consistent and efficient estimator of the high-frequency covariance (quadratic covariation) of two arbitrary assets, observed asynchronously with market microstructure noise. This estimator is built on the marriage of the quasi–maximum likelihood estimator of the quadratic variation and the proposed generalized synchronization scheme and thus is not influenced by the Epps effect. Moreover, the estimation procedure is free of tuning parameters or bandwidths and is readily implementable. Monte Carlo simulations show the advantage of this estimator by comparing it with a variety of estimators with specific synchronization methods. The empirical studies of six foreign exchange future contracts illustrate the time-varying correlations of the currencies during the 2008 global financial crisis, demonstrating the similarities and differences in their roles as key currencies in the global market.

A number of studies have provided evidence of increased correlations in global financial market returns during bear markets. Other studies, however, have shown that some of this evidence may be biased. We derive an alternative to previous estimators for implied correlation that is based on measures of portfolio downside risk and that does not suffer from bias. The unbiased quantile correlation estimates are directly applicable to portfolio optimization and to risk management techniques in general. This simple and practical method captures the increasing correlation in extreme market conditions while providing a pragmatic approach to understanding correlation structure in multivariate return distributions. Based on data for international equity markets, we found evidence of significant increased correlation in international equity returns in bear markets. This finding proves the importance of providing a tail-adjusted mean–variance covariance matrix.

Abstract We introduce an order-driven market model with heterogeneous agents trading via a central order matching mechanism. Traders set bids and asks and post market or limit orders according to exogenously fixed rules. We investigate how different trading strategies may affect the dynamics of price, bid-ask spreads, trading volume and volatility. We also analyse how some features of market design, such as tick size and order lifetime, affect market liquidity. The model is able to reproduce many of the complex phenomena observed in real stock markets.

ABSTRACT We propose a theory of information gathering agencies in a world of informational asymmetries and moral hazard. In a setting in which true firm values are certified by screening agents whose payoffs depend on noisy ex post monitors of information quality, the formation of information gathering agencies (groups of screening agents) is justified on two grounds. First, it enables screening agents to diversify their risky payoffs. Second, it allows information sharing. The first effect itself is insufficient despite the risk aversion of screening agents and the stochastic independence of the monitors used to compensate them.

The empirical evidence documenting the association between a firm's level of corporate social performance (CSP) and corporate financial performance (CFP) remains divided. This paper reinvestigates the CSP/CFP association using a more rigorous methodology whilst taking advantage of a superior measure of CSP. In contrast to the findings of much of the prior research, the market-based tests suggest a negative association between CSP and CFP, while the accounting tests indicate no association exists. We suggest that the negative market CSP/CFP relation should not be interpreted as CSP having no value. Rather, our results may suggest that leading CSP firms trade at a price premium (i.e. returns discount) relative to lagging CSP firms, thereby indicating that financial markets value CSP and are prepared to realise lower returns. For firms, this signals an ability to obtain a lower cost of equity capital when they proactively manage their CSP profiles.

Despite confirming the continuing downward trend in profitability of pairs trading, this study found that the strategy performs strongly during periods of prolonged turbulence, including the recent global financial crisis. Moreover, alternative algorithms combined with other measures enhance trading profits considerably, by 22 bps a month for bank stocks.

The purpose of this monograph is to provide an overview of the IPO literature since 2000. The fewer numbers of companies going public in recent years has raised many questions regarding the IPO process, in both academic and regulatory circles. As we all strive to understand these changes in the market, it is especially important to understand the dynamics underlying the IPO process. If the process of going public is too costly or the IPO mechanism is plagued by too many conflicts of interest among the various intermediaries, then private companies may rationally choose other methods of raising capital. In a related vein, it is imperative that new regulations not be based on research focusing solely on large, more mature firms. Newly public firms have unique characteristics, and an increased understanding of such issues will contribute positively to well-functioning public markets and further growth of the entrepreneurial sector. We also provide a detailed guide to researchers on how to obtain a research-quality sample of IPOs, from standard data sources. Related to this, we tabulate important corrections to these standard data sources.

ABSTRACT The development of asset pricing models that rely on instrumental variables together with the increased availability of easily‐accessible economic time‐series have renewed interest in predicting security returns. Evaluating the significance of these new research findings, however, is no easy task. Because these asset pricing theory tests are not independent, classical methods of assessing goodness‐of‐fit are inappropriate. This study investigates the distribution of the maximal when k of m regressors are used to predict security returns. We provide a simple procedure that adjusts critical values to account for selecting variables by searching among potential regressors.

Turkish banks are quite heterogeneous in terms of organizational form, ownership structure, size, age, portfolio concentration, growth prospects and attitude toward risk. They also exhibit strong variations in performance as measured by several efficiency indices. In the light of theoretical advances in corporate finance and financial institutions, this paper is an in‐depth cross‐sectional analysis of the Turkish banking sector, which explores the various bank, market and regulatory characteristics that may explain the efficiency variations across banks. Consistent with the related hypotheses investigated, the results indicate that a number of independent bank characteristics are significantly correlated with various efficiency measures.

Using national representative household finance survey data covering more than 6200 Chinese households, we first construct a new multidimensional indicator for financial inclusion. Then we examine the effect of financial inclusion on household income. Our results elicit several findings. First, financial inclusion has a strong positive effect on household income. This effect can be found across all households with different levels of income. Second, low-income households are found to benefit more from financial inclusion than high and mid-level income ones. We argue that, in this sense, financial inclusion helps reduce income inequality.

This article discusses how the performance of family firms and nonfamily firms might differ as a result of the different priorities flowing from family influence, even when the two types of firms possess comparable levels of resource stocks. Using hierarchical regression to analyze data from a national study of the Small Business Development Center program, we find that family influence has both a positive and a negative moderating effect on the relationships between different categories of resource stocks and performance. Specifically, family firms benefit more from resource stocks based on external relationships while nonfamily firms benefit more from resource stocks based on functional skills.

The distinctive high-growth, high-risk nature of technology-based industries raises important questions about the creation of wealth in high-tech takeovers. Do investors perceive acquisitions of high-tech targets to have strong potential for value creation? Or, given the large degree of uncertainty associated with many high-tech companies, is the market skeptical of the potential benefits of high-tech acquisitions? Our results show that acquirers of high-tech targets experience significantly positive abnormal returns, regardless of whether the merger is financed with cash or stock. Factors influencing bidder returns are the time period in which the merger occurs, the ownership structure of the acquirer, the high-tech affiliation of acquirers, and the ownership status of the target.