• 가정과삶의질연구
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• 제14권3호
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• pp.109-120
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• 1996

While theories of portfolio selection have been developed very little is known about how individuals actually go about constructing their asset potfolios. This study investigates empirically the characteristics of household's assets and which factor associated with risky and safe asset amount. Data used in this study consisted of 2,164 households and the statistics employed to analyze the data are univariate procedure Logit analysis and OLS. The results of this study were as follows: Among 2,164 households 505 housholds(23.3%) had risky assets. Average risky asset amount is 8,351,500 won and average safe asset amount is 7,086,900 won. Region education and occupation of household head home ownership transfer and other income and total expenditure had significant effects on either and other income and total expenditure had significant effects on either household having risky asset or safe asset. Financial income transfer and other income and total expenditure had significantly p sitive relation with the risky asset amount. Whereas age and the occupation of household head the sense of economic wellbeing earned financial tranfer and other income and total expenditure had significantly positive relation with safe asset amount.

• 한국생활과학회지
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• 제15권6호
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• pp.973-984
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• 2006

This study examined the asset allocation of the aged and analyzed the impact variables on the portfolio ratio of different kind of finanical assets. The aged was divided three groups, 55-65, 65-75 and 75 over. The results showed that the aged are not likely to invest on risky asset and their assets composed of mostly real estates and bank account. The study include four different assets, such as liquid asset, risky assets, horne equity and other real estates, which reflects the liquidity problems of households asset allocation for the aged in Korea. The aged who do not participate on stock market are likely to have more liquid assets. Households lived in Daegu, Kwangju, ChungCheong and CheonRa tend to have more liquid assets compared to those in Seoul. Total income is appeared having positive relationship with illiquid assets including stock, bonds, and private pension. Age group with 75yrs over tend to have greater mean of illiquid assets and it may caused by the polarization of assets, which gives intuition for the future study.

• 한국생활과학회지
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• 제21권2호
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• pp.225-240
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• 2012

The purpose of this study was to investigate the determinants of households with risky debt loads. The study used financial ratios to determine which households were over-indebted. The 3 ratios used were Debt to Asset ratio, Debt to Financial asset ratio, and Debt Service ratio. Data for this study was the 2011 Survey of Household Finance. Households that demonstrated total debts of 70% or more when compared to total assets were 8.8%. Households that demonstrated a debt load totaling 5 or more times their total financial assets were 19%. Households with monthly repayment obligations of 40% or more of disposable income were 20%. Households that fulfilled all 3 financial ratio criteria were 1.5% of total indebted households. Over-indebted households demonstrated severe economic condition in terms of debt, but not all over-indebted households were categorized as being in economically vulnerable group. The major determinants of households with risky debts were income, asset, purpose of loans, and spending behavior of the households.

• 한국시뮬레이션학회논문지
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• 제33권1호
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• pp.27-34
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• 2024

본 연구는 OECD 평균 수준의 소득대체율 대비 실현 소득대체율이 부족할 위험을 최소화하는 자산배분안을 제안하는 데 그 목적이 있다. 이를 위해 본 연구는 소득대체율 부족 위험을 정의하고 이를 최소화하는 최적 자산배분안을 퇴직연금제도 가입기간, 가입자 소득수준, 추가부담금 수준별로 산출하여 제시하였다. 이를 위해 본 연구는 투자의 대상으로 주식과 예금을 고려하였으며 주식의 경우 GBM 모형에 몬테카를로 시뮬레이션을 수행하여 수익률 분포를 생성하였다. 분석결과, 퇴직연금제도 가입 기간이 30년 이하인 경우, 가입자는 적립금의 최소 70~80%를 위험자산에 투자해야 소득대체율 부족 위험을 최소화할 수 있는 것으로 나타났다. 다만, 가입자가 부담금을 추가 납부할 경우 위험자산의 최적 투자 비중은 큰 폭으로 하락하였으며, 이러한 효과는 저소득자에서 크게 나타났다. 따라서, OECD 평균 수준의 소득대체율을 달성하기 위해 정부는 가입자들이 일정 수준 이상의 적립금을 위험자산에 투자할 수 있도록 유인하는 가운데 저소득층에게는 추가부담금 납입을 유인하기 위한 보조금 정책 등을 검토할 필요가 있다.

• 대한가정학회지
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• 제49권10호
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• pp.1-13
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• 2011

This paper examined how men and women differ in the attitude and behaviour of financial risk tolerance. The results showed that women were less risk seeking than men in financial risk tolerance. The results of the investment simulation indicated that men invested in higher risk assets like stock. In contrast, women prefered to invest in lower risk assets like real estate. The results of multiple regression analysis showed that if investors have the propensity to take more risk they allocated their money to higher risk assets in the simulation. This analysis also showed that the surveyed respondents invested in risky assets if they had experience in high risk investment in the past.

• 대한가정학회지
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• 제42권10호
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• pp.11-22
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• 2004

The purpose of this study was to examine the structure of financial risk components of households. The financial risk of households was assumed to be composed of risk knowledge, risk attitude and risk management behavior. For this study, a questionnaire was developed and distributed to 700 households in Seoul and Kwangju, and there were 495 responses with usable data. The findings showed that income stability had a positive relationship with the level of risk knowledge and risk attitude. Income stability, household debt, age of the youngest child and risk knowledge were found to have direct effects on risky vs. non-risky asset ratio. Income stability, savings, age of the youngest child and risk knowledge also had significant effects on the number of risky assets owned by households. Risk knowledge was the most important determinant of risk management behavior.

• Human Ecology Research
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• 제62권3호
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• pp.409-426
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• 2024

The purpose of this study was to analyze the financial portfolios of single-person households. For the analysis, data from the Korean Labor Panel Survey (2021) was utilized, comprising 2,905 single-person households. The major findings are as follows: First, the proportion of households with monthly savings was 32.0%, while the proportion of households holding financial assets was 72.1%. Second, regarding the composition of monthly savings, single-person households predominantly held savings accounts (93.3%), followed by insurance (4.7%), with cumulative funds at a mere 0.8%. The composition of financial assets showed that the majority were in bank deposits (78.5%), followed by risk management assets (18.0%), and investment assets (2.4%). Third, multivariate analysis results revealed that younger age, higher education level, and better financial factors were associated with a higher probability of having monthly savings. The results for financial assets were largely similar, with females showing a higher likelihood of asset possession compared to males. Fourth, the proportions of both bank savings in total savings and insurance generally had opposing effects. Fifth, age group had the greatest influence on the proportions of safety and insurance assets, followed by income group. Middle-aged households had lower proportions of safety assets but higher proportions of insurance assets compared to young households, while the opposite trend was observed for elderly households. Middle-income households had higher proportions of insurance assets compared to low-income households, whereas high-income households had higher proportions of investment assets. Lastly, cluster analysis categorized single-person households' financial portfolios into five groups: Group 1 (32.2%): "Old-Sustain" characterized by insufficient current income but economically stable retirement. Group 2 (29.4%): "Financially Active" engaging in various financial activities due to relatively high education and employment rates. Group 3 (28.0%): "Financially Inactive" classified as elderly groups with minimal financial activities. Group 4 (9.1%): "Risk Financial Structure" consisting of relatively young individuals focused on risk management assets but facing issues in financial asset management due to high-risk assets and financial loans. Group 5 (1.3%): "Stable-Insurance Oriented" with high financial assets and income concentrated in insurance for both savings and financial assets.

• 충청수학회지
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• 제26권2호
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• pp.343-349
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• 2013

The optimal portfolio selection problem under inflation risk is considered in this paper. There are three assets the economic agent can invest, which are a risk free bond, an index bond and a risky asset. By applying the martingale method, the optimal consumption rate and the optimal portfolios for each asset are obtained explicitly.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• 제19권4호
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• pp.417-428
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• 2015

Although, in general, the random fluctuation of interest rates gives a limited impact on portfolio optimization, their stochastic nature may exert a significant influence on the process of selecting the proportions of various assets to be held in a given portfolio when the stochastic volatility of risky assets is considered. The stochastic volatility covers a variety of known models to fit in with diverse economic environments. In this paper, an optimal strategy for portfolio selection as well as the smoothness properties of the relevant value function are studied with the dynamic programming method under a market model of both stochastic volatility and stochastic interest rates.

• 한국경영과학회지
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• 제29권2호
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• pp.45-57
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• 2004

The purpose of this paper is studying the valuation of option prices in Incomplete markets. A market is said to be incomplete if the given traded assets are insufficient to hedge a contingent claim. This situation occurs, for example, when the underlying stock process follows jump-diffusion processes. Due to the jump part, it is impossible to construct a hedging portfolio with stocks and riskless assets. Contrary to the case of a complete market in which only one equivalent martingale measure exists, there are infinite numbers of equivalent martingale measures in an incomplete market. Our research here is focusing on risk minimizing hedging strategy and its associated minimal martingale measure under the jump-diffusion processes. Based on this risk minimizing hedging strategy, we characterize the dynamics of a risky asset and derive the valuation formula for an option price. The main contribution of this paper is to obtain an analytical formula for a European option price under the jump-diffusion processes using the minimal martingale measure.