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Investigating the Relationship between Money Growth and Inflation in Turkey: A Nonlinear Causality Approach 研究土耳其货币增长与通货膨胀的关系:一种非线性因果关系方法
Pub Date : 2021-09-01 DOI: 10.52547/jme.16.3.305
E. Eltejaei, Jalal Montazeri Shoorekchali
Theories on the relationship between money and inflation had largely been shaped around the positive relationship and money causality for inflation before the PostKeynesians. Since the 1980s, this idea emerged that there might be no correlation between money growth and inflation. In the case of existence, the causality is reversed, so money is endogenous somehow. However, practically there is a suspicion that the causality between money growth and inflation is not fixed and linear. According to the experience of Turkey in the last seven decades, which has experienced fluctuated inflation rates, it is supposed that the causal relationship between Broad Money Growth (BMG) and inflation is not constant. This paper examines this idea over 1961–2019 using a Markov Switching Vector Autoregressive model (MS-VAR), which allows for regime shifts. Findings show that the causal relationship between BMG and inflation has not been constant, and different regimes have generated different causality orientations. There was a one-way causality from inflation to BMG during 1971–2001 that inflation rates were high. Whereas, during 1961–70 and 2002–19, when the Turkish economy experienced milder inflation rates, there was a one-way causal relationship from BMG to inflation.
在后凯恩斯主义者之前,关于货币与通货膨胀关系的理论在很大程度上是围绕通货膨胀的积极关系和货币因果关系形成的。自20世纪80年代以来,出现了一种观点,即货币增长与通胀之间可能没有相关性。在存在的情况下,因果关系是颠倒的,所以金钱在某种程度上是内生的。然而,实际上,人们怀疑货币增长与通货膨胀之间的因果关系不是固定的和线性的。根据土耳其过去七十年来通货膨胀率波动的经验,假定广义货币增长(BMG)与通货膨胀之间的因果关系不是恒定的。本文使用马尔可夫切换向量自回归模型(MS-VAR)在1961-2019年期间检验了这一想法,该模型允许政权转移。研究结果表明,BMG与通货膨胀之间的因果关系不是恒定的,不同的制度产生了不同的因果关系取向。1971-2001年间,通货膨胀与BMG之间存在单向因果关系,即通货膨胀率高。然而,在1961-70年和2002-19年期间,当土耳其经济经历较温和的通货膨胀率时,BMG与通货膨胀之间存在单向因果关系。
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引用次数: 0
Pathology of Business Model of Iranian Commercial Banks 伊朗商业银行商业模式的病理
Pub Date : 2021-09-01 DOI: 10.52547/jme.16.3.348
Mehdi Haghighi Kaffash, A. Moradpoor, Shahram Khalilnezhad, M. Keimasi
Despite the importance of the business model in implementing strategy, this issue is less addressed than strategy. This important issue regarding banks' business model has received less attention, and research in Iran and other countries has caused a deprivation of knowledge. In addition to the scientific pathology of the business model in Iranian commercial banks, the present article seeks to determine the weights of importance and prioritization of the main categories. It also prioritizes and determines the importance of each of the concepts of the main categories of the commercial banking business model. The research method is applied in terms of results and descriptive in terms of purpose and quantitative-qualitative from the data dimension. The research method's strategy in the qualitative part is the grounded theory, and in the quantitative part is the process of hierarchical analysis. The data analysis method in the qualitative part is the coding method, and the quantitative part is based on pairwise comparisons and incompatibility rate analysis. The research community is the experts of commercial banks, and its examples are Mellat, Tejarat, Melli, Sepah, Saderat, Shahr, Eghtesad-eNovin, and Ayandeh banks. The sampling method is a purposeful judgment with the snowball method and data collection tools in the qualitative part of the interview and review of documents in the quantitative part of the questionnaire. The research findings led to identifying the pathology of Iranian commercial banks' business model in 7 categories and 36 concepts, which are prioritized and contributed based on the importance and role of each of them in the business model.
尽管业务模型在实现战略方面很重要,但这个问题没有战略那么重要。这一关于银行商业模式的重要问题受到的关注较少,在伊朗和其他国家的研究导致了知识的匮乏。除了伊朗商业银行商业模式的科学病理学外,本文还试图确定主要类别的重要性和优先次序的权重。它还确定了商业银行业务模式主要类别中每个概念的优先级和重要性。研究方法从结果出发,从目的出发,采用描述性方法,从数据维度出发,采用定量定性方法。研究方法的策略在定性部分是扎根理论,在定量部分是层次分析的过程。定性部分的数据分析方法是编码法,定量部分是基于两两比较和不相容率分析。研究界是商业银行的专家,其例子是Mellat、Tejarat、Melli、Sepah、Saderat、Shahr、Eghtesad-eNovin和Ayandeh银行。抽样法是在访谈的定性部分用滚雪球法和数据收集工具进行有目的的判断,在问卷的定量部分查阅文献。研究结果将伊朗商业银行的商业模式划分为7个类别和36个概念,并根据每个类别在商业模式中的重要性和作用对其进行优先排序和贡献。
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引用次数: 0
Can Securitization Enhance Financial Stability? (Case of the I.R. of Iran) 证券化能增强金融稳定吗?(以伊朗I.R.为例)
Pub Date : 2021-09-01 DOI: 10.52547/jme.16.3.323
Mohammad Valipour Pasha, Rasool Khansari, A. Ahmadian
As a mechanism to enhance financial system stability and a process that allows banks to change their role from traditional lenders to originators and distributors of loans, securitization reduces the dependence on customer deposits. Also, it expands lending capacity, manages banks credit risk, and transforms illiquid assets into saleable securities. In this research, GMM method in three formats is used for the 16 selected Iranian banks. Results show that real sector growth positively and significantly increase financial stability in the Iranian economy. This is because of the economic scale augmentation and its impact on creating new financial resources. Meanwhile, the non-performing loans ratio significantly diminishes banking stability as well as it lowers banks' capacity to generate revenues from intermediary activities. Moreover, return is affected by the inflationary conditions which heightens revenue making and equity factors in banks' balance sheets. In order to generate higher revenues and gain upper profits, banking resources are occasionally withdrawn to enter other financial markets. Loans to deposits ratio, representing the credit risk in banking systems, denotes that higher risk in credit areas exacerbates financial stability due to the higher probability of risk appetite in generating loans to the general public. Also, security size highlights that although it is expected that securitization augments the financial stability in the banking system, other indicators would also be influential on financial stability. In other words, the higher the security size, the bigger its impact on banking stability. Furthermore, Lending capacity augments as a result of risk management and transforming illiquid assets into saleable securities.
作为一种增强金融体系稳定性的机制,以及允许银行从传统贷款人转变为贷款发起人和分发者的过程,证券化减少了对客户存款的依赖。此外,它还扩大贷款能力,管理银行信贷风险,并将非流动性资产转化为可出售证券。本研究采用三种格式的GMM方法对选取的16家伊朗银行进行分析。结果表明,实体部门增长积极显著地增加了伊朗经济的金融稳定性。这是因为经济规模的扩大及其对创造新的财政资源的影响。同时,不良贷款率显著降低了银行的稳定性,降低了银行从中介活动中获得收入的能力。此外,收益受到通货膨胀条件的影响,通货膨胀条件会提高银行资产负债表上的收入和权益因素。为了获得更高的收入和更高的利润,银行资源有时会被撤回,进入其他金融市场。存贷比代表了银行体系的信用风险,表明信贷领域的高风险加剧了金融稳定,因为向公众发放贷款的风险偏好可能性更高。此外,安全规模强调,尽管预计证券化会增强银行体系的金融稳定性,但其他指标也会对金融稳定性产生影响。换句话说,证券规模越大,对银行稳定性的影响就越大。此外,由于风险管理和将非流动性资产转化为可出售证券,贷款能力得到增强。
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引用次数: 0
Study on Gold as a Hedge or Safe Haven for the Stock Market by a Markov Switching Approach 用马尔可夫转换方法研究黄金作为股票市场的对冲或避险工具
Pub Date : 2021-09-01 DOI: 10.52547/jme.16.3.377
Aghil Ariannejad, R. Tehrani
Although gold is no longer a central cornerstone of the international monetary and financial system, it still attracts considerable attention from researchers and investors. Nowadays, many investors manage their risk with valuable assets such as gold. This paper examines the dynamic relationships between gold and stock markets in the Tehran Stock Exchange. We have applied the Markov switching method to study the role of gold as a hedge or safe haven for the Tehran Stock Exchange risk from 1998 to 2018. The high dependence and low dependence regimes used in the Markov switching model are based on empirical results that show two regimes for all markets under investigation: a low volatility regime and a high volatility regime. The study's findings show that gold can act as a strong hedge and cannot act as a safe haven for risk of The Tehran stock exchange.
尽管黄金不再是国际货币和金融体系的核心基石,但它仍然吸引着研究人员和投资者的极大关注。如今,许多投资者用黄金等贵重资产来管理风险。本文考察了德黑兰证券交易所黄金与股票市场之间的动态关系。我们应用马尔可夫转换方法研究了1998年至2018年黄金作为德黑兰证券交易所风险对冲或避险工具的作用。马尔可夫转换模型中使用的高依赖和低依赖机制是基于经验结果的,这些结果显示了所有被调查市场的两种机制:低波动机制和高波动机制。研究结果表明,黄金可以作为一种强有力的对冲工具,而不能作为德黑兰证券交易所风险的避风港。
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引用次数: 0
Global Economic Policy Uncertainty (GEPU) and Non-Performing Loans (NPL) in Iran's Banking System: Dynamic Correlation using the DCC-GARCH Approach 全球经济政策不确定性(GEPU)与伊朗银行体系不良贷款(NPL):使用DCC-GARCH方法的动态相关性
Pub Date : 2021-06-01 DOI: 10.52547/jme.16.2.187
M. Botshekan, Amir Takaloo, Reza H. soureh, Mohammad Sadegh Abdollahi Poor
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引用次数: 6
Outperformance Testing of a Dynamic Assets Portfolio Selection Supplemented with a Continuous Paths Levy Process 基于连续路径征费过程的动态资产组合选择的优胜检验
Pub Date : 2021-06-01 DOI: 10.52547/jme.16.2.253
Mohammad Feghhi Kashani, Ahmadreza Mohebimajd
This study aims at getting a better performance for optimal stock portfolios by modeling stocks prices dynamics through a continuous paths Levy process. To this end, the share prices are simulated using a multi-dimensional geometric Brownian motion model. Then, we use the results to form the optimal portfolio by maximizing the Sharpe ratio and comparing the findings with the outputs of the conventional model. To examine the robustness of the results, we have evaluated its performance for different investment horizons and various volumes of price information over a long period (approximately twenty years) in the Tehran Stock Exchange (TSE). Findings indicate that within the trading dates spanning the interval 24-Mar-2001 to 19-Sep-2020, the return of the portfolios obtained from applying this simulation scheme for maximization of Sharpe ratio is (244% on average) higher and their risk (standard deviation) are lower (1227% on average) than those realized by the conventional methods. Additionally, a comparison of the simulation approach with a performance of the actual market portfolios indicates that the Sharpe ratios of the simulation method are higher (0.055% on average) than those resulting from the total market performances. The results of the stochastic dominance test show that our proposed strategy has a first-order stochastic dominance (FSD) over the conventional one and market portfolios, that means at each level of cumulative distribution, the Sharpe ratio of our method is higher, and as FSD test makes no assumptions about the curvature of investors' utility functions, these results do not depend on the degree of risk aversion of investors, and as long as investors prefer a higher Sharpe ratio, they would be better off if they follow our proposed strategy.
本研究旨在通过连续路径Levy过程对股票价格动态进行建模,以获得更好的最优股票投资组合绩效。为此,利用一个多维几何布朗运动模型来模拟股价。然后,我们通过最大化夏普比率,并将结果与传统模型的输出结果进行比较,利用这些结果形成最优投资组合。为了检验结果的稳健性,我们评估了其在德黑兰证券交易所(TSE)长时间(约20年)内不同投资期限和不同数量价格信息的表现。结果表明,在2001年3月24日至2020年9月19日的交易时段内,应用该夏普比率最大化模拟方案获得的投资组合收益率比传统方法获得的投资组合收益率平均高244%,风险(标准差)平均低1227%。此外,将模拟方法与实际市场组合的表现进行比较表明,模拟方法的夏普比率(平均为0.055%)高于市场总表现得出的夏普比率。随机优势检验的结果表明,我们提出的策略对传统投资组合和市场投资组合具有一阶随机优势(FSD),这意味着在每一个累积分布水平上,我们的方法的夏普比率更高,并且由于FSD检验没有假设投资者的效用函数的曲率,这些结果不依赖于投资者的风险厌恶程度,只要投资者偏好较高的夏普比率。如果他们按照我们提出的策略去做,他们会过得更好。
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引用次数: 0
The Impact of Shadow Banking on the Financial Stability: Evidence from G20 Countries 影子银行对金融稳定的影响:来自G20国家的证据
Pub Date : 2021-06-01 DOI: 10.52547/jme.16.2.237
Mehran Zarei, M. Esfandiari, Seyed Hossein Mirjalili
Shadow banking is a term that came out of the financial crisis of 2007-2009. There is a belief that shadow banking was one of the crisis reasons. Because the excessive expansion of shadow banking endangers the financial stability of countries, this paper examines the impact of shadow banking on financial stability using data from 14 countries of the G20 during 2002-2018. We divided countries into four groups according to the level of shadow banking activity; then, we employed the quantile regression method. The results indicated that shadow banking hurts financial stability (positive impact on financial instability) in countries with a high shadow banking index (fourth group countries). One unit of increase in the shadow banking index increases financial instability in the fourth group countries (high shadow banking) by 1.6 units. But in countries where shadow banking is not very strong (other three groups), shadow banking does not significantly affect financial stability.
影子银行是2007-2009年金融危机的产物。有一种观点认为,影子银行是此次危机的原因之一。由于影子银行的过度扩张危及各国的金融稳定,本文使用2002-2018年G20 14个国家的数据来检验影子银行对金融稳定的影响。我们根据影子银行活动的程度将各国分为四组;然后,我们采用分位数回归方法。结果表明,在影子银行指数较高的国家(第四组国家),影子银行损害了金融稳定(对金融不稳定有积极影响)。影子银行指数每增加一个单位,第四组国家(影子银行高)的金融不稳定性就会增加1.6个单位。但在影子银行不太强大的国家(其他三组),影子银行不会显著影响金融稳定。
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引用次数: 1
Estimation of Value at Risk (VaR) Based On Lévy-GARCH Models: Evidence from Tehran Stock Exchange 基于lcv - garch模型的风险价值估计:来自德黑兰证券交易所的证据
Pub Date : 2021-06-01 DOI: 10.52547/jme.16.2.165
Hossein Amiri, Mahmood Najafi Nejad, Seyede Mohadese Mousavi
This paper aims to estimate the Value-at-Risk (VaR) using GARCH type models with improved return distribution. Value at Risk (VaR) is an essential benchmark for measuring the risk of financial markets quantitatively. The parametric method, historical simulation, and Monte Carlo simulation have been proposed in several financial mathematics and engineering studies to calculate VaR, that each of them has some limitations. Therefore, these methods are not recommended in the case of complications in financial modeling since they require considering a series of assumptions, such as symmetric distributions in return on assets. Because the stock exchange data in the present study are skewed, asymmetric distributions along with symmetric distributions have been used for estimating VaR in this study. In this paper, the performance of fifteen VaR models with a compound of three conditional volatility characteristics including GARCH, APARCH and GJR and five distributional assumptions (normal, Student’s t, skewed Student’s t and two different Lévy distributions, include normal-inverse Gaussian (NIG) and generalized hyperbolic (GHyp)) for return innovations are investigated in the chemical, base metals, automobile, and cement industries. To do so, daily data from of Tehran Stock Exchange are used from 2013 to 2020. The results show that the GJR model with NIG distribution is more accurate than other models. According to the industry index loss function, the highest and lowest risks are related to the automotive and cement industries.
本文旨在利用改进收益分布的GARCH模型估计风险价值(VaR)。风险价值(VaR)是定量衡量金融市场风险的重要指标。在一些金融数学和工程研究中提出了参数法、历史模拟法和蒙特卡罗模拟法来计算VaR,但每种方法都有一定的局限性。因此,在金融建模复杂的情况下,不建议使用这些方法,因为它们需要考虑一系列假设,例如资产回报的对称分布。由于本研究中的证券交易所数据是偏斜的,因此本研究中使用了不对称分布和对称分布来估计VaR。本文研究了化学、基本金属、汽车和水泥行业的15个VaR模型的绩效,这些VaR模型具有三个条件波动特征(GARCH、APARCH和GJR)和五个分布假设(正态、Student’s t、偏态Student’s t和两个不同的lsamvy分布,包括正态-逆高斯分布(NIG)和广义双曲分布(GHyp))的复合,用于回报创新。为此,我们使用了2013年至2020年德黑兰证券交易所的每日数据。结果表明,具有NIG分布的GJR模型比其他模型精度更高。根据行业指数损失函数,风险最高和最低的行业分别是汽车和水泥行业。
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引用次数: 0
Output Loss from Sudden Stop of FDI and the Role of Macroeconomic Policies 外商直接投资骤停造成的产出损失及宏观经济政策的作用
Pub Date : 2021-06-01 DOI: 10.52547/jme.16.2.213
M. Yazdani, E. Daryani
Generally, international flows of capital and foreign direct investment attraction are challengeable issues in the literature of economic growth and development in emerging market countries. However, the fluctuations in foreign direct investment, including sudden flood and stop, will affect emerging markets' output and macroeconomic variables. Using an econometric model with unbalanced panel data during 1990-2014 for 38 emerging countries, this study tries to evaluate the determinants of output losses from the sudden stop of foreign direct investment and consider the role of macroeconomic policies. The results show that the sudden stop phenomena and the financial crises have been identified as the main explanatory variables for the output collapse in the selected countries. Moreover, the role of macroeconomic policies is important, and the output losses can be controlled by using active monetary and exchange rate policies.
一般来说,资本的国际流动和吸引外国直接投资是新兴市场国家经济增长和发展文献中具有挑战性的问题。然而,外国直接投资的波动,包括突然涌入和停止,将影响新兴市场的产出和宏观经济变量。本研究利用1990-2014年间38个新兴国家的非平衡面板数据的计量经济模型,试图评估外国直接投资突然停止造成产出损失的决定因素,并考虑宏观经济政策的作用。结果表明,经济骤停现象和金融危机是所选国家产出崩溃的主要解释变量。此外,宏观经济政策的作用是重要的,可以通过使用积极的货币和汇率政策来控制产出损失。
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引用次数: 0
The Impact of Macroeconomic and Banking Variables on Non-Performing Loans in Oil Cycles: Evidence from Iran 石油周期中宏观经济和银行变量对不良贷款的影响:来自伊朗的证据
Pub Date : 2021-06-01 DOI: 10.52547/jme.16.2.135
F. Rahbar, Mohsen Behzadi Soufiani
The present study investigates the impact of macroeconomic and bank-specific variables on non-performing loans (NPLs). To avoid the identification problem, two models are employed to address this impact. The first one tests the effect of macroeconomic variables including the growth of oil revenues, inflation, and the growth of GDP without the oil sector on the growth of NPLs. Data is quarterly over the period 2004:3 to 2019:3. The transition variable in this setup is the growth of oil revenues and its threshold is 9 percent, which divides the sample into oil booms and oil recessions. According to the results, inflation has a significant positive effect on NPLs. During the oil boom, oil revenues decrease the NPLs. Due to the immense size of the government and its current and capital expenditures, when oil revenues are lower, the government forces banks to allocate loans to finance projects with long maturity. Furthermore, the present study used PSTR to test the impact of bank-specific variables consisting of interest rate spread, loan loss provision, loan to deposit ratio, and NPLs. To do so, monthly data of 10 banks is used over 2016:04 to 2020:12. The transition variable is the interest rate spread at 1 percent, which categorizes the banks into two groups of good and bad. Good banks collect deposits with a low-interest rate and allocate high-rate loans with less chance of default. So, interest spread is the most important prominent determinant of decreasing NPLs, while the loan to deposit ratio is dependent on the banks belonging to which group. For good banks, the loan to deposit ratio decreases the NPLs, while for bad banks, it worsens the growth of NPLs.
本研究探讨了宏观经济和银行特定变量对不良贷款的影响。为了避免识别问题,我们采用了两个模型来处理这种影响。第一个测试了宏观经济变量的影响,包括石油收入的增长、通货膨胀和不包括石油部门的GDP增长对不良贷款增长的影响。数据为2004:3至2019:3期间的季度数据。这个设置中的过渡变量是石油收入的增长,其阈值为9%,这将样本分为石油繁荣和石油衰退。结果表明,通货膨胀对不良贷款有显著的正向影响。在石油繁荣时期,石油收入减少了不良贷款。由于政府的庞大规模及其经常性支出和资本支出,当石油收入较低时,政府迫使银行将贷款分配给期限较长的项目。此外,本研究使用PSTR来测试银行特定变量的影响,包括利差、贷款损失拨备、贷存比和不良贷款。为此,使用了2016年4月至2020年12月期间10家银行的月度数据。过渡变量是1%的利差,这将银行分为好银行和坏银行两类。好的银行以低利率吸收存款,并以较低的违约几率分配高利率贷款。因此,息差是不良贷款减少的最重要的突出决定因素,而存贷比则取决于属于哪个集团的银行。对于好银行来说,存贷比降低了不良贷款,而对于坏银行来说,存贷比恶化了不良贷款的增长。
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引用次数: 1
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Journal of Money and Economy
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