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박경인(Park, Kyung-In),장승욱(Jang, Seung-Wook) 한국산업경영학회 2016 經營硏究 Vol.31 No.4
본 연구에서는 계속투자전략의 투자성과 분석을 위해서 가장 기본적인 방법론으로 이용되는 Jegadeesh and Titman(2003)의 연구방법을 이용하여 1990년부터 2015년까지 계속투자전략의 투자성과를 분석하였다. 전체 표본기간에서는 유의한 계속투자전략의 투자성과가 잘 나타나지 않았으나 기간1에 해당하는 1990년부터 2002년까지 분석한 결과에서는 유의한 반전투자전략의 투자성과가 나타나고 기간2에 해당하는 2003년부터 2015년까지 분석한 결과에서는 유의한 계속투자전략의 투자성과가 나타났다. 따라서 본 연구에서는 이와 같은 현상이 나타나는 원인을 찾고자 계속투자전략을 구성하는 포트폴리오에 포함되는 개별 기업들의 특성 분석을 하였다. 우선 과거 성과가 좋았던 포트폴리오(P1)의 월평균보유수익률은 기간1에 비해서 기간2에 상당히 높게 나타났으나 과거성과가 나빴던 포트폴리오(P10)의 월평균보유수익률은 기간에 따른 큰 변화가 없었다. 둘째, 기간1에 비해 기간2에서는 P1과 P10 모두에서 대규모 기업과 중규모 기업이 차지하는 비중이 줄고 소 규모 기업이 차지하는 비중이 증가하였다. 셋째, 포트폴리오를 구성하는 기업들의 업종 분석에서는P과 P10의 구성비에 큰 차이가 없었다. 그러나 P1에서는 월평균보유수익률이 증가하는 업종의 비중이 커진데 반해서 P10에서는 월평균보유수익률이 감소하는 업종의 비중이 커져서 전체적인 포트폴리오의 투자성과에는 큰 차이가 나타났다. 마지막으로 P1과 P10을 구성하는 기업들의 특성변수에서는 모두 유의한 차이를 나타내었다. 또한 P1에 포함되는 기업들은 기간1에 비해서 기간2에 매 출액순이익률, 평균거래량, 주당가격, 월평균수익률이 P10에 포함되는 기업들에 비해서 좀 더 크게증가하였다. 이와 같은 기업들의 특성 때문에 기간1에 비해 기간2에서 P1의 월평균보유수익률은 크게 증가한 것으로 보인다. 결론적으로 P1과 P10을 구성하는 개별 기업들의 이와 같은 특성 차이로 인하여 하위 표본 기간에 따라 계속투자전략의 투자성과가 다르게 나타난 것으로 추정된다. We examined the performance of momentum strategy with method used by Jegadeesh and Titman(2003). The full sample period was from January 1990 to December 2015, and the stocks that were used in this study are common stocks from the KOSPI in the Fn-DataGuide. There was not performance of momentum strategy for the full time period. However, there was performance of contrarian strategy in period1(from 1990 to 2002) and that of momentum strategy in period2(from 2003 to 2015). So, we tried to analyze individual firm s characteristics of each portfolio with searching for the underlying cause behind this phenomenon. The major findings of the study are as follows: First, the returns of P1(past winner portfolio) are higher in period1 than period2 but that of P10(past loser portfolio) do not have a big change between period1 and period2. Second, both P1 and P10 have recently had more large firms and medium firms and less small firms. Third, both P1 and P10 have similar industry ratios. However, P1 had increased ratios of industry with increased monthly returns but P10 had increased ratios of industry with decreased monthly returns. So, total portfolio performance had a big gap between P1 and P10. Finally, there are statistically significant differences in firm s characteristics in P1 and P10. The ratio of net income to net sales, average trading volume, stock price and monthly returns among firm s characteristics were increasing to period2.
박경인 ( Kyung In Park ) 한국금융공학회 2017 금융공학연구 Vol.16 No.3
Since foreign investors have been allowed to invest freely since 1998, the trading rate of foreign investors has gradually increased in the Korean Stock Market. The trading rate of individual investors is the largest in trading volume until now. However, that of foreigners has gradually increased in total trading price recently. Using monthly trading data from each type of investors, during the period from 1999 until 2015 from the stocks listed in the Korean Stock Market, we analyzed trading patterns and strategies of each type of investor. First, institutional investors and foreign investors put more money into P1-P4 mostly. However, individual investors invested in the lowest portfolio and the highest portfolio primarily. Second, institutional investors and foreign investors tend to have a momentum strategy as expected in the previous literature. However, individual investors have a contrarian strategy using past holding period return. Third, we have identified the characteristics of each type of investors preferred holding firm. The results show that institutional investors tend to prefer stable firms, foreign investors tend to hold large sized firms and blue chips and individual investors hold small sized firms that have firm characteristics as high leverage rate, low earning rate, and low possession rate of foreign investor. Finally, we analyzed changes in trading patterns and strategies of each type of investors before and after 2008. However, we also found the similar results into two sub-periods.
박경인(Kyung-In Park),이춘수(Chun-Su Lee) 한국무역학회 2010 무역학회지 Vol.35 No.4
This paper examines the sources of momentum profits of countries exhibiting and non-exhibiting momentum. This research uses the method by Cooper, Gutierrez Jr and Hameed(2004). This paper studies the cumulative profits of momentum portfolio from ranking period to holding period. This paper examines how autocorrelation of momentum strategies influences the performances of momentum strategies. First, we find that investors of momentum countries are more overconfident than investors of non-momentum countries. Secondly, Momentum profits are found in Down markets of U.K. and Canada as well as Up markets of all countries. Thirdly, we find that Down markets of U.S., Korea and Japan don't have momentum profits because of no overconfidence.
대인간 외상 경험 대학생의 침습적 반추와 외상 후 성장 간의 관계: 의도적 반추를 통한 자기자비와 감사성향의 조절된 매개효과
박경인(Park, Kyung-In), 김은석(Kim, Eun-Seok) 한국교육치료학회 2024 교육치료연구 Vol.16 No.2
본 연구에서는 외상 후 성장 모형에 기반하여 의도적 반추가 침습적 반추와 외상 후 성장의 관계를 매개하는지 살펴보고, 자기자비와 감사성향이 이러한 매개효과를 조절하는지 살펴보기 위해 조절된 매개효과 모형을 분석하였다. 이를 위해 대인간 외상 경험이 있다고 보고한 대학생 223명을 대상으로 온라인 설문조사를 실시하였고 대인간 외상경험, 사건충격, 사건관련 반추, 외상 후 성장, 자기자비, 감사성향을 측정하였고, SPSS 29.0과 PROCESS Macro 4.3을 사용하여 자료를 분석하였다. 주요 연구 결과는 다음과 같다. 첫째, 의도적 반추가 침습적 반추와 외상 후 성장 간의 관계를 부분매개 하는 것으로 나타났다. 둘째, 침습적 반추와 외상 후 성장의 관계에서 자기자비에 의해 조절된 의도적 반추의 매개효과가 유의한 것으로 확인되었다. 셋째, 침습적 반추와 외상 후 성장의 관계에서 감사성향에 의해 조절된 의도적 반추의 매개효과가 유의한 것으로 확인되었다. 본 연구결과를 토대로 하여 후속연구에 대한 제언과 시사점을 논의하였다. This study aims to examine the mediating effect of deliberate rumination between intrusive rumination and post-traumatic growth based on the post-traumatic growth model and the moderated mediation effects of self-compassion and gratitude in this mediation process. Data from an online survey of 223 university students with experience of interpersonal trauma experience, measuring experience of interpersonal trauma, impact of event, event-related rumination, post-traumatic growth, self-compassion, and gratitude were analyzed using SPSS 29.0 and PROCESS Macro 4.3. The main results are as follows. First, deliberate rumination partially mediates the relationship between intrusive rumination and post-traumatic growth. Second, self-compassion was found to moderate the indirect effect in the relationship between intrusive rumination and post-traumatic growth through deliberate rumination. Third, gratitude was found to moderate the indirect effect in the relationship between intrusive rumination and post-traumatic growth through deliberate rumination. Based on the research results, suggestions and implications for follow-up research were discussed.
변애련(Ai-lian Bian),박경인(Kyung-In Park),문하영(Ha-young Moon) 한국무역연구원 2014 무역연구 Vol.10 No.4
This paper studies the relationship between corporate social responsibility and financial performance with a focus on the experience of CSR reporting in Korea. The sample size for this study consisted of 183 firms in Korea during the period covering 2006-2009, using the KEJI index as CSR performance proxy. Specifically, this study examined the effect of CSR performance on subsequent financial performance and the effect of subsequent financial performance on CSR performance in Korean firms. The next phase of the study looked into the differences between firms that do CSR reporting and those that do not. In conclusion, the findings suggest that CSR performance is positively associated with some aspects of subsequent financial performance In addition, results showed that: (1) there is no effect in expediency of CSR reporting; (2) CSR performance is positively associated with prior financial performance more thus strongly supporting the slack resource theory.