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1.
We examine how investors strategically spoof the stock market by placing orders with little chance of being executed, but which mislead other traders into thinking there is an imbalance in the order book. Using the complete intraday order and trade data of the Korea Exchange (KRX) in a custom data set identifying individual accounts, we find that investors strategically placed spoofing orders which, given the KRX's order-disclosure rule at the time, created the impression of a substantial order book imbalance, with the intent to manipulate subsequent prices. This manipulation, which made use of specific features of the market microstructure, differs from previously studied forms of manipulation based on information or transactions. Roughly half of the spoofing orders were placed in conjunction with day trading. Stocks targeted for manipulation had higher return volatility, lower market capitalization, lower price level, and lower managerial transparency. We also find that spoofing traders achieved substantial extra profits. The frequency of spoofing orders decreased drastically after the KRX altered its order-disclosure rule. 相似文献
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Woon Wook Jang Young Ho Eom Don H. Kim 《Asia-Pacific Journal of Financial Studies》2014,43(3):432-464
In this study, we develop a unified framework to analyze the asset price processes underlying option prices, and test a variety of model specifications using the S&P 500 index options. Specifically, we classify option pricing models, the stochastic volatility and leverage effects of which are generated by three channels: via the diffusion, via jumps, or via both. The empirical results from our specification analysis show that the performance of option pricing models can be improved significantly by generating stochastic return volatilities with two factor processes and with two sources of leverage effects that come separately from the jump and diffusion components. 相似文献
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To investigate changes that e‐coupons bring to consumers' coupon usage, the authors of this article developed and estimated models of coupon‐usage intention. The models are based on the theory of reasoned action or the theory of planned behavior. Results show that the theory of planned behavior explains e‐coupon usage intention better than the theory of reasoned action. On the other hand, the intention to use traditional coupons is effectively explained by the theory of reasoned action. Both perceived behavioral control and attitude toward Internet searching have significant effects on the intention to use e‐coupons. Also, heavy users of e‐coupons are different from those of traditional coupons. Light users of traditional coupons have relatively high intention to use e‐coupons if they have more access to e‐coupons. On the other hand, heavy users of traditional coupons have relatively low intention to use e‐coupons if they have less access to them. © 2006 Wiley Periodicals, Inc. 相似文献
4.
Taeyeon Eom 《Journal of Travel & Tourism Marketing》2013,30(8):956-968
This research tested the Theory of Planned Behavior model to reveal the formation of tourists’ intention to experience a tour program organized by a local community (i.e. TourDure) by taking the moderating effect of gender and age into account. TourDure is an excellent case of the community-based tourism initiatives in Korea. A field survey was carried out for data collection. Our findings indicated that attitude and subjective norm had a significant impact on intention. Also, destination attachment showed a positive influence on the intention. In addition, subjective norm and attitude was found to be significant across the gender group. 相似文献
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This study examines whether the disposition effect (DE), i.e., the tendency of investors to ride losses and realize gains, exists in the Korean stock index futures market. Using a unique database, we find strong evidence for the DE and explain this in terms of investor characteristics. We also investigate the effect that the disposition bias has on investment performance. There are four main findings. First, individual investors are much more susceptible to the DE than institutional and foreign investors. Second, sophistication and trading experience tend to reduce the DE. Third, the DE is stronger in long positions than in short positions. Finally, there is a negative relationship between the DE and investment performance. This result is consistent with Odean (1998, Journal of Finance, 53, 1775–1798), but contrasts with Locke and Mann (2005, Journal of Financial Economics, 76, 401–444) who find no evidence of any contemporaneous measurable costs associated with the DE. © 2009 Wiley Periodicals, Inc. Jrl Fut Mark 29:496–522, 2009 相似文献
7.
Edward I. Altman Young Ho Eom Dong Won Kim 《Journal of International Financial Management & Accounting》1995,6(3):230-249
This study is an attempt to construct and test a distress classification model for Korean companies. Utilizing a sample of 34 distressed firms from the recent 1990-1993 period and a matched (by industry and year) sample of non-failed firms, we observe the classification accuracy of two models. Both models utilize measures of firm size, asset turnover, solvency and leverage with one model available for testing only on publicly traded companies and one model applicable to all public and private entities. We observe excellent classification accuracy based on data from the first two years prior to distress. And, although the accuracy drops off after t -2, the models still provide effective early warnings of distress in many cases. The results of this study are of particular relevance in the current financial market scenario of increased deregulation and greater individual financial institution decision making. It is somewhat ironic for us to be proposing the use of a financial distress early-warning model given the current robust economic growth and low bankruptcy rate in Korea. But, the financial problems in Japan are a sobering reminder that high growth can be followed by financial excesses, increased business failures and large loan losses. 相似文献
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To analyze the negative momentum profit in Korea, we further divide the decomposition of Lo and MacKinlay (1990) into winners' and losers' auto‐ and cross‐serial covariances. We find that the negative autocovariance and the positive cross‐serial covariance in Lo and MacKinlay's decomposition are asymmetric between winners and losers. The negative autocovariance is mainly from losers and the positive cross‐serial covariance mainly between past winners and current losers. By investigating time‐series characteristics of auto‐(cross‐serial) covariances, we cannot observe any systematic change of auto‐(cross‐serial) covariances in the momentum period. Based upon the evidence in this paper, we argue that positive cross‐serial covariance between past winners and current losers seems to be an important driving force behind the negative momentum profit in Korea. Therefore, investors' underreaction to market‐wide information would be plausible explanation of the negative momentum profit. 相似文献
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The Consumer Styles Inventory (CSI) developed by Sproles and Kendall, Journal of Consumer Affairs, 1986, 20: 267–279, is one of the most widely used instruments to classify consumers by their decision making styles. With changes in consumption culture attributable to the coexistence of global and local consumer culture in the past few decades, it is essential to reaffirm that the CSI measurement instrument is valid for contemporary consumers and can be applied in various contexts. This study, therefore, aimed to present a set of CSI validation procedures using contemporaneous participants and targeting two groups of participants in the United States. Two sets of exploratory factor analysis using the main data set (n = 390) were performed and confirmatory factor analysis was applied to the main data set and the cross-validation data set (n = 172). Results from both the exploratory factor and confirmatory factor analyses seem to validate the eight underlying consumer characteristics of CSI. 相似文献
10.
Dojoon Park;Jun Kyung Auh;Giwan Song;Young Ho Eom; 《Asia-Pacific Journal of Financial Studies》2024,53(2):238-276
We investigate corporate bond defaults from 1995 to 2020 using hand-collected data from hard-copy publications in Korea. Using an under-sampling method, we construct default prediction models based on machine learning models as well as a logistic model. The empirical results show that the random forest model outperforms the others. However, regardless of the models used, model performance in financial crisis periods is significantly worse than it is in non-crisis periods. This finding suggests the need for additional information to improve model performance during crises when the default prediction is the most relevant. Furthermore, the dominant predictor of defaults before the global financial crisis was the debt ratio, while subsequently, the coverage ratio has become the most important predictor. 相似文献