On the ω test of dependence between statistical variables

Abstract

1. In an earlier Note¹ I have suggested to measure the dependence between statistical variables by the expression where p_ij is the probability that x assumes the value x_i and y the value y_j , while By is meant summation with respect to all i and j for which p_ij > p_i* p_*j .     

Is Innovativeness a Link between Pay and Performance?

The relationship between innovativeness and pay-performance sensitivity is theoretically ambiguous because innovative activities simultaneously enhance the productivity of executives in creating shareholder value (productivity effect) and increase the volatility of the firm's performance (volatility effect). The empirical findings from the pooled sample suggest that innovativeness and executive pay-performance sensitivity are inversely related. The extent to which the volatility effect outweighed the productivity effect was especially pronounced during the 2000-2003 market crash period. While the productivity effect is stronger than the volatility effect in both the CEO and low-free-cash-flow subsamples, the volatility effect is stronger than the productivity effect in both the non-CEO and high-free-cash-flow subsamples.     

Understanding the relationship between founder–CEOs and firm performance

We use instrumental variables methods to disentangle the effect of founder–CEOs on performance from the effect of performance on founder–CEO status. Our instruments for founder–CEO status are the proportion of the firm's founders that are dead and the number of people who founded the company. We find strong evidence that founder–CEO status is endogenous in performance regressions and that good performance makes it less likely that the founder retains the CEO title. After factoring out the effect of performance on founder–CEO status, we identify a positive causal effect of founder–CEOs on firm performance that is quantitatively larger than the effect estimated through standard OLS regressions. We also find that founder–CEOs are more likely to relinquish the CEO post after periods of either unusually low or unusually high operating performances. All in all, the results in this paper are consistent with a largely positive view of founder control in large US corporations.     

Does Inflation Illusion Explain the Relation between REITs and Inflation?

We examine whether the observed negative relations between real estate investment trust (REIT) returns and inflation can be explained by the inflation illusion. We identify the mispricing component in REIT prices based on present value models, both linear and loglinear, and then we investigate whether inflation can explain the mispricing component. When we allow for time-varying interest rates, inflation no longer explains the REIT mispricing component. Instead, we find that behavioral factors such as consumer sentiments contribute to the mispricing of REIT prices.     

Striking a balance between ‘Sir’ and ‘Dude’

This postcard reflects on an issue common to many academics, whether they teach accounting, politics or—as in my case—commercial law to business and economics students. Creating an open and effective relationship with students is a balancing act undertaken by educators across the board—and no less by my accounting colleagues down the hall. In teaching commercial law to accounting students, I was recently reminded of the importance and occasional difficulty in maintaining a healthy ‘two-way’ relationship. I trust the following may connect with accounting educators and others who are also trying to achieve the right balance.     

Literature Review of Relationship between China＇s Money Supply and Price

本文从当前我国央行采取稳健性货币政策来抑制通货膨胀,效果却似乎不明显的背景出发,引出梳理我国对货币供应量与物价关系的研究的必要。本文从文献的来源及概述、货币供应量与物价指标的选择、我国货币供应量与物价常规关系研究、我国货币供应量与物价非常规关系研究、对＂中国之谜＂的研究、对＂中国之谜＂的解释、对外汇储备—货币供应量—物价的研究等几个方面进行了梳理。最后简要地评价了这些文献,并提出了需要进一步研究的问题。     

Are 20-F reconciliations between IAS and US-GAAP value-relevant? A discussion

Harris and Muller (1998)present some interesting evidence on the market valuation of accounting numbers under IAS and US-GAAP. I view this evidence as a first step in contributing to the debate on whether foreign firms following IAS should be allowed to list in the US without providing 20-F reconciliations. In my discussion, I evaluate the contribution and limitations of the study and suggest some extensions.     

Citicorp–Travelers Group merger: Challenging barriers between banking and insurance

The Citicorp–Travelers Group merger increased the prospects for new legislation to remove the barriers between banking and insurance, resulting in a positive wealth effect for institutions most likely to gain from deregulation. Analysis of abnormal returns surrounding the merger show that life insurance companies and large banks (excluding Citicorp and Travelers Group) have significant stock price increases, while the returns of small banks, health insurers, and property/casualty insurers are insignificantly different from 0. This analysis provides evidence that investors expect large banks and insurance companies to receive significant benefits from recent congressional legislation removing barriers to bancassurance.     

Has NAFTA Increased Labor Market Integration between the United States and Mexico?

This article analyzes three criteria for labor market integrationbetween Mexico and the United States before and since the NorthAmerican Free Trade Agreement: the responsiveness of Mexicanwages to US wage shocks, the speed at which relative wages returnto a long-run differential, and changes in the rate of convergenceof absolute wages. Tests for increased integration using thesethree criteria generate mixed results, which are then exploredby directly incorporating trade, foreign direct investment (FDI),and migration. The results suggest that trade and FDI did infact positively contribute to integration but that the increasein border enforcement depressed Mexican wages, masking the positivebenefits.     

Does online interaction between firms and investors reduce stock price crash risk?

This paper examines how online interaction between firm management and investors impacts stock price crash risk. Based on the previous literature, we postulate that online interaction constrains crash risk via two channels, i.e., deterring bad news hoarding activities of managers and decreasing differences of opinion among investors. Relying on the launch of Hudongyi (the first official investor relations management platform in the world) for identification, we demonstrate that online firm-investor interaction significantly reduces future stock price crash risk and that these two channels can both explain this effect. Overall, our findings highlight the important role of online interaction in risk management.     

Is bank diversification a linking channel between regulatory capital and bank value?

This study investigates the interrelationship between bank regulatory capital and bank diversification. We argue that regulatory capital might act as a substitutive mechanism of diversification to alleviate a bank's default risk. As a result, regulatory capital is likely to discourage firms from excessive diversification, which might in turn indirectly improve bank value. Using a sample of listed banks in developed countries from 2011 to 2017, we find that total regulatory capital is inversely associated with bank diversification. Narrower regulatory capital ratios only have a significant association with income-based but not with asset-based diversification. Our results also reveal an indirect effect of regulatory capital on bank value mediated by bank diversification (i.e. indirect-only mediation). Overall, our study provides novel insights into the complementarity of the institutional and strategic domains so as to understand the far-reaching implications of regulation reforms for the strategic behaviour of banking companies.     

Competition between financial markets in Europe: what can be expected from MiFID?

The Markets in Financial Instruments Directive (MiFID) could be the foundation of new trading platforms in Europe. This contribution employs insights from the theoretical and empirical literature to highlight some of the possible implications of MiFID. In particular, we argue that more competition will lead to more liquid markets, reflected in lower bid–ask spreads and greater depth. It will also lead to innovation in incumbent markets and stimulate the design of new trading platforms. MiFID has already introduced more competition, as evidenced by the startup of Instinet Chi-X, the announcement of new initiatives, including Project Turquoise and BATS, and the reactions of incumbent exchanges.

Asset restructuring strategies in bank acquisitions: Does distance between dealing partners matter?

One of the most lively-debated effects of banking acquisitions is the change in lending and asset allocation of the target bank in favour of transaction-based products, at the expense of small and informationally opaque borrowers. These changes may be the result of two distinct restructuring strategies pursued by the acquirer with respect to the asset portfolio of the acquired bank: a cleaning strategy (CS), in which the acquirer makes a clean sweep of all the negative net present value activities in the portfolio of the acquired bank, and a portfolio strategy (PS), in which the acquiring bank permanently changes the portfolio allocation of the acquired bank. In this paper we focus on Italian bank acquisitions and test which asset restructuring strategy was predominantly pursued over the period 1997–2003. Moreover, we distinguish acquisitions according to their geographic diversifying character and to the physical and cultural distances that separate acquiring from acquired banks. When we look at the mean value, we do not find clear evidence of a primacy either of CSs or PSs. When we separate in-market from out-of-market bank acquisitions, however, results show that the CSs prevail only in the former type of deals, while in the latter the portfolio of acquired banks is subject to PSs. Finally, we find that differences in asset restructuring strategies can be explained by differences in corporate culture and the workplace environment of the dealing partners.     

The relationship between a firm’s information environment and its cash holding decision

This study directly investigates the relationship between the firm’s information environment and its cash holding decision using two separate country-level events as proxies for a general improvement of the information environment: the initial enforcement of new insider trading laws and the mandatory adoption of International Financial Reporting Standards. Analysing a large international sample, we find that firms reduce their cash holdings after both exogenous information shocks. We also find that the reductions are greater for firms facing greater financing constraints and agency issues, and for those for which the informational shocks are stronger. Further analyses reveal a reduction in firms’ average cash savings rate, an increase in performance, an increase in the use of external debt, a decrease in abnormal investment, and an increase in the value of cash holdings. Taken together, our results suggest that an improvement in the information environment mitigates both the adverse selection and moral hazard problems thereby, leading to a reduction in cash reserves held for transaction and precautionary motives, and the likelihood of entrenched managers building large cash balances for private benefit.     

Large Shareholders as Monitors: Is There a Trade-Off between Liquidity and Control?

This paper analyzes the incentives of large shareholders to monitor public corporations. We investigate the hypothesis that a liquid stock market reduces large shareholders' incentives to monitor because it allows them to sell their stocks more easily. Even though this is true, a liquid market also makes it less costly to hold larger stakes and easier to purchase additional shares. We show that this fact is important if monitoring is costly: market liquidity mitigates the problem that small shareholders free ride on the effort of the large shareholder. We find that liquid stock markets are beneficial because they make corporate governance more effective.     

Discussion of “on the relation between expected returns and implied cost of capital”

This paper discusses the paper “On the relationship between expected returns and implied cost of capital” by Hughes, Liu, and Liu. The discussion focuses on developing the intuition behind the mathematical results and on extensions of the analysis that future research could address.     

Fundamentals or Managerial Discretion? The Relationship between Accrual Variability and Future Stock Return Volatility

This study extends the theoretical framework of Callen and Segal (2004) and Vuolteenaho (2002) to investigate the association between accrual variability and firm‐level stock return volatility. The empirical evidence supports our prediction that increased uncertainty in current‐period accounting accruals is associated with significantly higher volatility of future stock returns, and the results are valid for measures of both systematic and idiosyncratic volatility. When accrual variability is decomposed into fundamental and discretionary portions, we find that the positive relationship between accrual variability and future stock return volatility is dominated by the fundamental component of accrual variability. Overall, our results suggest that uncertainty reflected in accrual information is subsequently reflected in the fluctuation of future stock returns, and that the predictive content in accruals primarily reflects firms' fundamental uncertainty, rather than any effects of managerial choices and interventions in the accounting process.     

Does an intertemporal tradeoff between risk and return explain mean reversion in stock prices?

When volatility feedback is taken into account, there is strong evidence of a positive tradeoff between stock market volatility and expected returns on a market portfolio. In this paper, we ask whether this intertemporal tradeoff between risk and return is responsible for the reported evidence of mean reversion in stock prices. There are two relevant findings. First, price movements not related to the effects of Markov-switching market volatility are largely unpredictable over long horizons. Second, time-varying parameter estimates of the long-horizon predictability of stock returns reject any systematic mean reversion in favour of behaviour implicit in the historical timing of the tradeoff between risk and return.     

The relationship between banking market competition and risk-taking: Do size and capitalization matter?

This paper addresses the effects of bank competition on the risk-taking behaviors of banks in 10 Latin American countries between 2003 and 2008. We conduct our empirical approach in two steps. First, we estimate the Boone indicator, which is a measure of competition. We then regress this measure and other explanatory variables on the banking “stability inefficiency” derived simultaneously from the estimation of a stability stochastic frontier. Unlike previous findings, this paper concludes that competition affects risk-taking behavior in a non-linear way as both high and low competition levels enhance financial stability, while we find the opposite effect for average competition. In addition, bank size and capitalization are essential factors in explaining this relationship. On the one hand, the larger a bank is, the more it benefits from competition. On the other hand, a greater capital ratio is advantageous for banks that operate in collusive markets, while capitalization only enhances the stability of larger banks under high and average competition. These results are of extreme importance when considering bank regulations, especially in light of the recent turmoil in the global financial markets.