Earnings management,market discounts and the performance of private equity placements

Private equity placement data allow us to determine whether sophisticated investors can uncover the true value of firms. This can be done by defining sophisticated investors as those who meet the stringent participation requirements of the private equity market. Our results show private equity issuing firms overstate their earnings in the quarter preceding private equity placement announcements and that sophisticated investors do not ask for a fair discount when purchasing the shares of the private issuing firms. We also find evidence showing that the reversal of the effects of pre-issue earnings management is a significant determinant of the long-term performance of private issues. Results further show that post-issue stock performance and operating performance of firms using “aggressive” earnings management significantly underperform those using more “conservative” earnings management.     

Identifying technology trends for R&D planning using TRIZ and text mining

The current pace of technological development has forced many companies to invest significant capital and resources in research and development (R&D) activities. A systematic and efficient method of identifying technology trends and their evolutionary potentials can help companies guide their R&D planning and wisely allocate their R&D resources. This study proposes a framework combining the evolutionary trends developed by the Theory of Inventive Problem Solving, or Teoriya Reshniya Izobretatelskikh Zadatch (TRIZ) in Russian, with the visualization technique of text mining to systematically identify technology trends from patent documents. As technological information in patent documents is stored almost entirely in text format, the text mining method allows R&D personnel to efficiently identify technology trends and effectively conduct R&D planning. Utilizing text mining method on patents of magnetic random access memory (MRAM) systems and the underlying principles of TRIZ evolutionary trends, this study shows that MRAM includes 10 important technology trends. These trends have almost reached the evolutionary limit phase defined by TRIZ, which means that MRAM is fast becoming a mature technology. Therefore, for businesses that intend to acquire MRAM technology they do not possess, a wise R&D plan may be licensing the technology, buying the technology from others, or participating in a joint venture rather than using in‐house R&D.     

A Social Interactions Model with Endogenous Friendship Formation and Selectivity

This paper analyzes the endogeneity bias problem caused by associations of members within a network when the spatial autoregressive (SAR) model is used to study social interactions. When there are unobserved factors that affect both friendship decisions and economic outcomes, the spatial weight matrix (sociomatrix; adjacency matrix) in the SAR model, which represents the structure of a friendship network, might correlate with the disturbance term of the model, and consequently result in an endogenous selection problem in the outcomes. We consider this problem of selection bias with a modeling approach. In this approach, a statistical network model is adopted to explain the endogenous network formation process. By specifying unobserved components in both the network model and the SAR model, we capture the correlation between the processes of network and outcome formation, and propose a proper estimation procedure for the system. We demonstrate that the estimation of this system can be effectively done by using the Bayesian method. We provide a Monte Carlo experiment and an empirical application of this modeling approach on the friendship networks of high school students and their interactions on academic performance in the Add Health data. Copyright © 2015 John Wiley & Sons, Ltd.     

The Effect of Executive Stock Options on Corporate Innovative Activities

This study investigates whether the implicit optionality of executive stock options (ESOs) induce managers to undertake innovative activities associated with various types of risk. We find ESO risk incentive (vega) to be positively correlated with all types of corporate innovations. We also find greater ESO risk incentive effects for the product‐related innovative activities that are associated more with systematic risk than idiosyncratic risk. Finally, we document the following pecking order for the ESO risk incentive effects: improved product, new product, alliance, and new research and development. Our results suggest that executives have more incentive to invest in projects with higher systematic risk.     

Financial research in Canada: A long‐term assessment of journal publications

We examined the financial research among Canadian academic institutions between 1990–2008. Overall, Canadian institutions contribute 3.79% of all publications in 23 leading finance journals. The five most productive universities are the University of British Columbia, the University of Toronto, Wilfrid Laurier University, McGill University, and the University of Alberta. The research productivity of Canadian universities is comparable to their counterparts in Australia and the UK. However, when examining only the top four finance journals, Canadian universities clearly outperform their counterparts in Australia and the UK. In addition, we find that the sufficiency of research funding, the size of faculty, as well as the assembly of a cohort of research‐active faculty contribute to the research productivity of finance programs in Canada. Copyright © 2010 ASAC. Published by John Wiley & Sons, Ltd.     

How Different Types of Traders Behave in the Taiwan Futures Market

This paper examines the heterogeneity of the disposition effect and its impact on profitability among three different types of traders, using complete trading data from Taiwan's futures market. More than 70% of the trading volume on this market comes from retail traders (RTs), with an additional 15% from foreign institutional traders (FIs) and proprietary traders (PTs). Both FIs and RTs exhibit the disposition effect whereas PTs do not, and FIs with a weaker disposition effect outperform RTs. This study provides evidence that RTs with the disposition effect tend to lessen the effect in the next period, exhibiting the phenomenon of mean reversion. While previous studies focus only on the static relationship between the disposition effect and profitability, ours explores the dynamic rather than the static behavior of RTs, providing a more complete and objective idea of their trading behavior. In addition, the positive relationship between the current disposition effect and prior profits suggests that the degree of the disposition effect increases when RTs have prior profits. © 2012 Wiley Periodicals, Inc. Jrl Fut Mark 33:1097–1117, 2013     

Deterrence and Incapacitation Effects in a Closed Area: A Case Study of Auto Theft in Taiwan

Deterrence and incapacitation effects of auto theft are estimated with a full consideration of substitution effects across crime types and across districts in a closed area in which none of the effects will leak out. It is found that the increase in the cleared rate of auto theft crime in a certain district and in other districts strongly deters the auto theft in that district, indicating that the across‐district deterrence effect dominates the across‐district substitution effect. The across‐crime deterrence effect significantly exceeds the across‐crime substitution effect for close crime (general theft), but is insignificant for distant crime (violence).