• The Korean Journal of Financial Management
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• v.23 no.1
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• pp.165-191
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• 2006

I examine the relationship between values and security designs of MBS(mortgage-backed securities), using four different types of them. To this end I consider a pass-through and three different kinds of CMOs(collateralized mortgage obligations). It turns out that the pass-through has the lowest value and that, among CMOs, that of a senior-mezzanine-subordinate design has the highest value. This implies that CMOs of a simple and extreme design, like that of a senior-subordinate design, are not likely to be the best CMOs for risk averse buyers. Another critical finding is that the optimal security design of CMOs or MBS does exist in the form of an interior solution. This indicates that MBS issuers could charge higher prices of MBS given their underlying mortgages by tailoring MBS security designs to the needs or utilities of MBS buyers, usually by removing and combining risks of component tranches of MBS. Accordingly a thorough study of realistic utility functions of MBA buyers could enhance the values or prices of MBS to be issued.

• KDI Journal of Economic Policy
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• v.35 no.2
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• pp.133-166
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• 2013

This study analyzes the relationships between soft dollar(brokerage commission) and characteristics of funds, and between brokerage commission and return on funds, using the data on equity funds of Korea from June 2008 to November 2011. The result confirms a statistically significant negative relationship between management & sales fees and brokerage commission, meaning that rather than raising management & sales fees, which could be easily recognized by investors, it is through brokerage commission, a hidden cost, which asset management firms indirectly compensate for their services. Meanwhile, the analysis on the relationship between brokerage commission and return on funds reveals that higher brokerage commissions lead to lower return on funds, meaning at least in short-term no contribution to increasing returns in the future. These results suggest the need for streamlining the system to alleviate conflicts of interest between investors and management firms in addition to effectively controlling for principal-agent problems.

• The Korean Journal of Financial Management
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• v.22 no.1
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• pp.147-179
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• 2005

It is frequently said that mortgage-backed securities (MBS) of different security designs are issued in an attempt to meet the varying needs and expectations of investors. If this is true indeed, MBS of complicated risk-return characteristics are likely to be priced higher than MBS of simple risk-return characteristics we. We test this implication by establishing a recombining binomial interest rate prepayment model with a burnout effect embedded. More specifically, we compare the relative values (utilities) of a pass-through and a PAC- Support collateralized mortgage obligation(CMO), and theoretically show why and how the CMO is more highly valued than is the pass-through. The model is established such that mortgage prepayment is a function of the current value of, and the past path of, the mort-gage market rate. Since we work on not the total value of the two MBS but the value of each tranche of either MBS, the test results could be robust to slightly different versions of similar tests, which may be done in the future.

• The Korean Journal of Financial Studies
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• v.3 no.1
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• pp.35-67
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• 1996

최근 미국, 영국, 일본 등 세계의 주요국(主要國)들이 침체 상태에 있는 자국의 경제에 활력을 불어 넣고 나아가 앞으로의 산업(産業)을 선도해 갈 기술집약적(技術集約的)인 첨단산업(尖端産業)을 육성하기 위한 각종 산업정책(産業政策)을 실시하고 있다. 특히 벤처형 중소기업의 자금조달을 용이하도록 하기 위한 방안의 일환으로 직접금융 자금의 조달 창구인 장외시장(場外市場)의 활성화를 중요 정책목표로 삼고 필요한 조치를 강구하고 있는 추세이다. 최근 유럽의 EASDAQ과 영국의 대체투자시장(AIM)이 개설되었고 또한 일본에서는 연구개발형 중소기업의 자금조달을 보다 원활히 하려는 목적으로 장외등록 요건을 대폭 완화한 특칙제도를 마련하여 제2의 장외시장을 개설하기도 하였다. 우리나라도 최근 중소기업청의 발족과 더불어 중소기업의 직접금융시장 활용도를 제고하기 위해 장외시장의 활성화에 대한 정책 방안을 마련하여 시행하기로 하였다. 본고는 우리나라의 중소기업 자금조달 실태를 고찰하고 그 문제점을 살펴 보았는 바 지나치게 간접금융에 의존하고 있는 사실이 조사되었다. 따라서 본고에서는 중소기업의 자금조달 창구가 증권시장으로 이행(移行)되어 보다 원활하게 필요한 자금이 조달될 수 있는 방안을 제시하는 데 논의의 초점을 두었다. 무엇 보다도 현행 우리나라의 증권시장에서 중소기업이 자금을 조달하기에는 기업공개 요건과 상장 요건의 제약으로 어려움이 많음을 지적하고 대신 요건이 대폭 완화되어 있는 장외시장의 활용이 앞으로 중요할 것임을 인식하여 우리나라에서도 장외시장의 발전이 필요함을 강조하였다. 이러한 주장을 위해 우선 현행 장외시장의 문제점을 살펴보고 그 개선방안을 다각도로 검토하였다. 특히 투자자들의 적극적인 참여를 유도하기 위해서는 유망중소기업의 발굴과 이들 기업의 등록이 중요함을 우선 논의하고 등록된 증권의 유동성 제고가 또한 중요함을 제시하였다. 유통시장의 활성화를 위해 전산매매시스템의 구축과 장외시장 증권을 전문적으로 취급하는 전문증권회사의 양성이 필요함을 주장하였고 또한 투자자들이 안심하고 장외시장에서 투자활동을 할 수 있도록 투자자보호 제도를 강화할 필요가 있음을 제안하였다.

• Management & Information Systems Review
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• v.31 no.3
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• pp.21-46
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• 2012

This paper attempts to offer an effective strategy of hedge fund based on trade probability control in the futures market. By using various technical indicators, we create an association rule and transforms it into a trading rule to be used as an investment strategy. Association rules are made by the combination of various technical indicators and the range of individual indicator value. Adjustments of trade probabilities are performed by depending on the rule combinations and it can be utilized to establish an effective investment strategy onto the risk management. In order to demonstrate the superiority of the investment strategy proposed, we analyzed a profitability using the futures index based on KOSPI200. Experiments results show that our proposed strategy could effectively manage and response the dynamics investment risks.

• Journal of Industrial Convergence
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• v.18 no.5
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• pp.1-13
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• 2020

The purpose of this study is to find out how much the investment effect of convertible bond(CB) is from the perspective of investors and to present efficient investment plans to investors. The research method is to investigate the coupon interest rate, maturity interest rate, conversion price, etc. for CBs. As a result of the study, it was analyzed that CB's investment efficiency was low because the conversion price excess days ratio was only about 1/4 of the conversion date. The conversion day yield was -6.3% and the maturity day yield was -5.2% on average. It was analyzed that the number of stocks with negative conversion day yield was 2.4 times higher than the number of positive stocks and 3.7 times higher than the number of positive stocks with a maturity day yield, so the expected return on equity conversion of CB was low.

• KIPS Transactions on Software and Data Engineering
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• v.10 no.9
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• pp.367-374
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• 2021

Stock price prediction is a subject of research in various fields such as economy, statistics, computer engineering, etc. In recent years, researches on predicting the movement of stock prices by learning artificial intelligence models from various indicators such as basic indicators and technical indicators have become active. This study proposes a deep learning model that predicts the ups and downs of KOSPI from overseas indices such as S&P500, past KOSPI indices, and trading trends by KOSPI investors. The proposed model extracts a latent variable using a stacked auto-encoder to predict stock price fluctuations, and predicts the fluctuation of the closing price compared to the market price of the day by learning an LSTM suitable for learning time series data from the extracted latent variable to decide to buy or sell based on the value. As a result of comparing the returns and prediction accuracy of the proposed model and the comparative models, the proposed model showed better performance than the comparative models.

• Journal of Digital Convergence
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• v.17 no.2
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• pp.73-80
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• 2019

This study analyzed the relevance between investment horizons of foreign investors and Book-Tax Difference. To do this, we measured investment horizons of foreign investors as the investment-turnover of foreign investors. We use the sample of 3,025 firm-year Korea listed companies belonging to non-financial corporate sector during 2011-2016. The results of empirical analyses show that investment horizons of foreign investors has a negative relevance with Book-Tax Difference. This result indicates that the firm have a long-term foreign investors has a good Accounting Earning's Quality than the firm have a short-term foreign investors. This study is expected to provide useful information by suggesting the need for more incentive for the long-term foreign investors. And Our Study has a contribution that this study extended prior research on foreign investors by utilizing investment horizons of foreign investors.

• The Journal of the Korea Contents Association
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• v.19 no.9
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• pp.233-241
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• 2019

The purpose of this study is to empirically analyze whether the influence of foreign investors from the monitoring role in Korean capital market is observed differently in accordance with the global financial crisis situation. We collected a total of 2,919 firm data from 2003 to 2015 and performed the empirical tests between foreign investor ownership and firms' cost of equity capital separately according to the situation of the global financial crisis. From the empirical results, foreign investors in general were playing a positive function in the Korean capital market by effectively performing the monitoring role for companies. However, we observed that their monitoring role is not effectively performed when the risk level of capital market is maximized, such as during the global financial crisis. The study suggested that the influence of foreign investors may vary depending on the level of risk in the capital market, which is expected to contribute to the market participants and academia.

• Journal of Korea Society of Industrial Information Systems
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• v.26 no.3
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• pp.41-57
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• 2021

This study explores the success factors of post-investment management in content projects, which have recently seen increasing quantitative and qualitative status. The dependence on investment is huge in projects in the domestic content industry. As a result, unlike other industries, the content industry has a large role and contribution of investors in terms of project management. This study is conducted on 15 venture capitalists who have a key function in domestic content investment, and draws on their successful experience, what factors are successful in management(project management). To this end, 10 representative project management areas at the research and practice level are manipulated to suit content projects, and success factors by management area are derived in a qualitative manner for films and games with genre and industrial representation. For each area of management, a total of 38 success factors were derived, ranging from as little as three to as many as five. Given the theoretical and practical implications of research and the limitations of research, we present future research directions.