• 아태비즈니스연구
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• 제14권1호
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• pp.73-91
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• 2023

Purpose - The purpose of this study is to re-examine the disclosure effect of stock splits and long-term performance after stock splits using stock split data over the past 10 years, and infer the motivation (signal or opportunism) of stock splits. In addition, we focus on exploring the determinants of the short- and long-term market response to stock splits. Design/methodology/approach - We measure the short-term market response to a stock split and the long-term stock performance after the stock split announcement using the event study method. We analyze whether there is a difference in the long-term and short-term market response to a stock split according to various company characteristics through univariate analysis and regression analysis. Findings - In the case of the entire sample, a statistically significant positive excess return is observed on the stock split announcement date, and the excess return during the 24-month holding period after the stock split do not show a difference from zero. In particular, the difference between short-term and long-term returns on stock splits is larger in companies with a large stock split ratio, small companies, large growth potential, and companies with a combination of financial events after a stock split. Research implications or Originality - The results of this study suggest that at least the signal hypothesis for a stock split does not hold in the Korean stock market. On the other hand, it suggests that there is a possibility that a stock split can be abused by the manager's opportunistic motive, and that this opportunism can be discriminated depending on the size of the stock split, corporate characteristics, and financing plan.

• 정보학연구
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• 제9권4호
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• pp.75-85
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• 2006

This study is to test the influence of stock option granting information on the firm's performance. The important issue in stock option is that agent cost is the important determinant factor for the long term performance. The agent cost arises between the manager and shareholders. So many study are concentrated in diminishing the agent cost, and develop some substitute tools to measure the agent cost. The event study about stock option analyzes returns around event date at a time. Event study provides estimation periods and cumulative returns. Announcements about stock option are generally associated with positive abnormal returns in short term period, but not showing positive effect in long term period. It is important to investigate the responses of stocks to new information contained in the announcements of stock option. Therefore it is important to study the long term performance in the case of stock option. The event time portfolio approach exists the CAR model, BHAR model and WR model. And the calendar time portfolio approach has the 3 factor model, 4 factor model, CTAR model, and RATS model. This study is forced to develop and arrange two approach method in evaluating the performance, the event time portfolio approach and calendar time portfolio approach.

• International Journal of Computer Science & Network Security
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• 제23권4호
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• pp.166-171
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• 2023

The Stock price analysis is an increasing concern in a financial time series. The purpose of the study is to analyze the price parameters of date, high, low, and news feed about the stock exchange price. Long short term memory (LSTM) is a cutting-edge technology used for predicting the data based on time series. LSTM performs well in executing large sequence of data. This paper presents the Long Short Term Memory Model has used to analyze the stock price ranges of 10 days and 20 days by exponential moving average. The proposed approach gives better performance using technical indicators of stock price with an accuracy of 82.6% and cross entropy of 71%.

• 재무관리연구
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• 제24권1호
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• pp.1-27
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• 2007

본 연구에서는 1998년부터 2002년 동안 주식분할을 실시한 과거 거래소 상장기업을 대상으로 장기성과를 분석하였다. 장기성과는 Event-time 포트폴리오 접근방식으로 측정되어지는 BHAR과 CAAR을 이용하였고 또한 Calendar-time 포트폴리오 접근방식으로 1요인 CAPM 모형과 3요인 모형을 이용하였다. 분석결과 주식분할의 공시월 부근에서 유의적인 양(+)의 초과수익률을 발견할 수 있었다. 이러한 결과는 기존 국내 연구들에서 밝혀진 바와 같이 주식분할의 공시효과가 존재한다는 것을 재확인 한 것이다. 하지만 이후 기간별 BHAR과 CAAR 모두 유의적인 음(-)의 초과수익률이 나타났으며, 이러한 결과는 Calendar-time 포트폴리오 접근방식인 1요인 CAPM 모형과 3요인 모형에서도 재확인 할 수 있었다. 분할비율에 따른 BHAR과 CAAR을 분석한 결과 분할비율이 높은 기업군도 주식분할 이후 여전히 음(-)의 초과수익률이 나타났으며 주식분할 이전 보다 이후에 영업성과가 더 악화되는 것으로 나타났다. 따라서 주식분할이 기업의 수익성이 개선된다는 신호로 보기에는 무리가 있었다. 배당성향의 증감에 따라 표본을 분류하여 장기성과를 분석한 결과에서 두 표본 간에 뚜렷한 차이를 발견할 수 없었다. 본 연구의 결과를 통하여 볼 때 주식분할은 한국 주식시장에서 단기적으로는 주가에 양(+)의 영향을 미치고 있지만 장기적으로는 주식분할이 주가에 미치는 영향은 없는 것으로 판단된다.

• 재무관리연구
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• 제27권2호
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• pp.85-114
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• 2010

본 연구에서는 성과연동형 스톡옵션을 가장 활발하게 부여한 국내 금융업을 대상으로 경영자에 대한 성과연동형 스톡옵션 부여가 과연 기업가치를 유효하게 증가시켰는지를 실증분석을 통해 검증하였다. 2002~2005년 동안 스톡옵션을 부여한 금융기관을 대상으로 실증분석을 수행하여 다음과 같은 결과를 얻었다. 첫째, 스톡옵션 부여공시에 따른 단기 주가반응을 분석한 결과, 고정형 스톡옵션 부여공시는 기업가치에 별다른 영향을 미치지 않았다. 반면, 성과연동형 스톡옵션을 부여한 경우 기대와 달리 공시일 전후 유의한 음(-)의 초과수익률이 발견되었다. 금융기관별로는 은행의 성과 연동형 스톡옵션 부여공시가 강하고 유의한 음(-)의 초과수익률을 산출하였는데, 이는 선행연구에서 제시한 것처럼 은행처럼 규제가 많은 산업에서는 경영자가 경영의사결정을 내릴 때 재량권이 제한적이므로 투자자들이 스톡옵션 부여에 따른 유효성을 낮게 평가하기 때문으로 해석된다. 둘째, 스톡옵션 부여 이후 기업의 장기성과를 검증한 결과, 스톡옵션 부여가 기업가치를 증가시켰다는 증거를 발견하지 못했으며 이는 선행연구와 동일한 결과이다. 성과연동형 스톡옵션을 부여한 금융기관에서도 장기성과가 개선되었다는 결과를 얻지 못했으나, 고정형 스톡옵션 부여와 비교하여 볼 때, 스톡옵션 부여 후 1~24개월 및 1~36개월의 초과수익률이 상대적으로 높게 나타났다. 이는 향후 성과연동형 스톡옵션제도가 보완되고 보다 정교하게 설계되어 실행된다면 기업가치 개선에 기여할 여지가 있음을 시사한다.

• 정보학연구
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• 제9권3호
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• pp.77-89
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• 2006

The event study analyzes returns around event date at a time. Event study provides estimation periods and cumulative returns. Stock split announcements are generally associated with positive abnormal returns. It is important to investigate the responses of stocks to new information contained in the announcements of stock splits. So It is important to study the long term performance in the case of Stock Split. This Study forced to two approach method in evaluating the performance, the event time portfolio approach and calendar time portfolio approach. The event time portfolio approach exists the CAR model, BHAR model and WR model. And the calendar time portfolio approach has the 3 factor model, 4 factor model, CTAR model, and RATS model.

• The Journal of Asian Finance, Economics and Business
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• 제8권4호
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• pp.741-749
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• 2021

The research paper endeavors to investigate the presence of seasonal anomalies in the Indian equity market. It also aims to verify the notion that equity markets are for long-term investors. The study employs daily index data of Sensex, Bombay Stock Exchange, to understand its volatility for the period ranging from January 2001 to August 2020. To analyze the seasonal effects in the stock market of India, multiple regression techniques along with descriptive analysis, graphical analysis and various statistical tests are used. The study also employs the rolling returns at different time intervals in order to understand the underlying risks and volatility involved in equity returns. The results from the analysis reveal that daily and monthly seasonality is not present in Sensex returns i.e., investors cannot earn abnormal returns by timing their investment decisions. Hence, the major finding of this study is that the Indian stock market performance is random, and the returns are efficient. The other major conclusion of the research is that the equity returns are profitable in the long run providing investors a hope that they can make gains and compensate for the loss in one period by a superior performance in some other periods.

• 한국경영과학회지
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• 제39권4호
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• pp.33-49
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• 2014

This study empirically examines the impact of firms' environmental (E), social (S), and governancial (G) factors on their short-term and long-term values. To measure firms' non-financial performance, we use ESG performance grades published by KCGS (Korea Corporate Governance Service). We employ stock log return as the proxy of each firm's short-term value, and Tobin's Q ratio as that of its long-term value. From a series of regression analyses, we find each of the ESG factors generally has a negative impact on stock return while it has a positive impact on the Tobin's Q ratio. These results imply that firms' effort for enhancing their non-financial performance may adversely affect their financial performance in a short term; but in the long-term point of view, firms' values increase through their good images engraved by their respective social, environmental and governancial efforts. In addition, we compare the relative strength of impact among E, S, G, the three non-financial factors on the firms' value measured in Tobin's Q ratio, and find that S (social factor) and G (governancial factor) give statistically significant impact on the firms' value respectively. This result tells us it would be advised to strategically embed CSV (creating shared value) pursuing both of profits and social responsibility in the firms' future agenda. While E (environmental factor) is shown to be an insignificant factor for the firms' value, it should be emphasized as a major concern by all the stakeholders in order to form a sound business ecosystem.

• 한국콘텐츠학회논문지
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• 제18권7호
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• pp.49-63
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• 2018

본 연구는 부동산 취득 및 처분에 따른 공시효과와 장기성과에 대해 분석하고, 부동산 취득 및 처분금액과 주요 목적별(경영활동, 재무활동, 기타)로 차별적인 장기성과가 나타나는지를 검증하였다. 본 연구의 주요 분석결과를 요약하면 다음과 같다. 첫째, 취득표본은 공시일에 유의적인 주가반응이 없지만, 처분표본은 공시일에 (+)양의 주가성과를 보여 부동산 처분에 따른 공시효과는 긍정적으로 나타난다. 둘째, 부동산 취득 및 처분공시 이후 장기성과는 음(-)으로 나타나며, 취득 및 처분 목적별로 구분한 경우에도 동일한 결과를 보인다. 셋째, 부동산 취득의 경우 취득금액과 장기성과는 유의적인 음(-)으로 나타나지만, 부동산 처분표본의 경우에는 경영활동에 국한하여 처분금액이 증가할수록 기업가치는 상승한다. 전체적으로 기업의 부동산 취득 및 처분 이후에 공통적으로 장기성과는 하락한다. 따라서 부동산 취득에 따른 장기성과 하락은 대리인 이론으로 설명 가능하다. 또한, 부동산 처분 이후의 주가하락은 기업의 재무적 곤경을 시장에 알리는 신호 역할을 수행함으로써 장기성과가 악화된 것으로 해석해 볼 수 있다.

• 경영과정보연구
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• 제27권
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• pp.53-69
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• 2008

In this paper we analyse performance of value strategy and moving average method among the non-financial listed companies whose fiscal year ends at December in the Korean Stock Exchange between 1996 and 2005. And we analyse combination investment performance of value investment and moving average method. After the analysis objective enterprises divide with the value stock and the growth stock, in accordance with moving average method we divide ascending stock and descending stock. And we compose 6 portfolios with combination of value stock, growth stock, ascending stock and descending stock. Using the difference of investment performance of these portfolios, when fundamental analysis and technical analysis method all considering we measure investment performance. The major findings of this research are as follows: First, the value strategy of buying value stocks and selling growth stocks were effective in the long-term investment. Second, using the moving average method, technical analysis were effective in the case of the short-term investment. Third, the portfolios combined fundamental analysis and technical analysis were more effective than investment performance of technical analysis.