首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 93 毫秒
1.
区别于传统的波动风险溢出研究,本文将行业波动率分解为好波动和坏波动以捕捉正负向冲击下的行业风险状况,通过构建中国经济金融系统的好坏波动溢出网络并提出针对冲击方向的相对溢入溢出指数,从静态和动态两个方面,揭示行业在正负冲击下的风险共振和传染效应,并探究不同时期好坏波动主导地位的转变,以对新冠肺炎疫情发生后的风险状况进行科学判断。研究发现,(1)中国行业间存在显著的波动风险传染效应,表现出同向波动关联更紧密且负向冲击诱发风险共振更强烈的特征。(2)可选消费好坏波动的溢出水平均居行业首位,是最主要的系统性风险源头;而工业好坏波动的溢入水平均最高,易受其他行业的溢出影响,最为敏感。(3)相较于波动溢入,冲击方向对波动溢出的影响更具行业异质性;金融、房地产、能源以及信息技术在负向冲击下的波动溢入溢出水平显著高于正向冲击。(4)新冠肺炎疫情发生后,医疗保健好波动的方向性溢出水平高于坏波动,而其他大多数行业则由坏波动占据主导地位。  相似文献   

2.
陈亮  冯海 《商业时代》2005,(33):40-41
本文对我国股票市场开放对上市公司权益资本成本的影响进行分析。本文对权益资本成本的三个组成部分(风险溢酬、代理成本、交易成本)进行了探讨,得出相应的结论。  相似文献   

3.
刘珏 《北方经贸》2014,(9):188-189
中国股指期货市场起步较晚,且合约持续期较发达国家相比还很短暂,波动性也较大,因此中国股指期货市场有着其独有特征以及风险。通过建立基于广义误差分布的均值广义自回归条件异方差模型可以较好拟合出中国股指期货市场若干特征,股指期货市场的风险异常波动点对应着国内外重要经济事件,这些经济事件导致模型残差存在异常波动联立CVaR风险计算模型与GARCH-M模型并计算中国股指期货市场的风险,发现当前中国股指期货市场风险较低,投资者大多持谨慎投资态度,短期内投资股指期货市场风险不大。  相似文献   

4.
汇率的高低直接影响该商品在国际市场上的成本和价格,直接影响商品的国际竞争力。外汇汇率的波动,也会给金融投资者带来巨大的风险。本文就汇率变动形成的风险对国际贸易的影响进行了简要的分析,给出了规避汇率风险的措施,以期降低汇率波动给贸易造成的风险,减少损失。  相似文献   

5.
股市是经济的晴雨表,在股票市场上价值规律表现为股票价格围绕企业价值波动。股票价格的波动是投资者对企业未来的期望收益的变化。长期投资增加了投资者的风险,同时降低了资金的流动性,所以投资者期望较高的收益率。那么,长期投资的投资者真的能得到较短期投资者来说较高的收益率吗?下面我们将通过实证分析得到答案。  相似文献   

6.
倪纵 《致富时代》2015,(2):79-80
随着自贸区平台的设立和沪港通闸门正式开启,国内投资者有望获得更多的途径将资金配置到海外市场,分享全球经济增长的成果。作为以稳健著称的被动投资工具,跨境ETF无疑是国内中小投资者参与全球投资的首选。国内投资者参与跨境ETF投资也面临着更为复杂的风险。汇率波动是跨境ETF不同于一般ETF的主要风险来源之一,本文分析了汇率波动是如何影响跨境ETF的收益,并使用人民币远期对汇率风险进行了对冲,但本文也认为,使用对冲手段管理汇率风险又许多缺陷和不足,管理汇率风险还是应结合投资标的其他风险收益特征综合考虑。  相似文献   

7.
本文基于GARCH类模型对美元、欧元、日元、港币、英镑五种货币对人民币的外汇汇率进行实证分析,得出这五种汇率的时间序列均存在显著的ARCH效应,五种汇率前期的外部冲击会加剧汇率的波动,且均不存在显著的风险补偿效应,除美元外的其他四种汇率系统具有自我稳定功能。经过VaR方法的风险度量可知,美元和港币的汇率风险多表现在多头市场,日元和英镑则表现在空头市场,而欧元的波动性过大,其风险超过我们的预期,投资者应慎重选择。  相似文献   

8.
黄金价格的变化受多种因素的影响,表现出既有宏观趋势的规律性,又有微观波动的随机性。准确预测黄金价格和防范黄金价格波动风险一直是金融机构的重要研究课题之一。本文首先对混沌理论进行了研究,然后对黄金市场价格波动的若干混沌特征作了分析,最后提出了基于混沌理论的黄金市场价格波动的风险防范策略。研究将为金融机构和广大的投资者提供防范黄金价格波动风险的新思路。  相似文献   

9.
如何准确度量金融市场风险将是金融学研究的永恒话题.既考虑金融市场的实时波动,又关注投资者的风险态度,应是科学度量风险的方法.文章基于极值理论的POT模型,采用谱风险度量方法对上证综合指数、香港恒生指数和美国道琼斯指数进行了风险度量.实证结果表明,相对于忽视投资者风险态度的和值,考虑投资者风险厌恶态度的极值谱风险能够比较准确地度量金融市场的实际风险.  相似文献   

10.
文章讨论了加入异质信念后公司特质风险对预期收益率的影响。通过放宽经典Merton模型的假设条件,加入异质信念和卖空限制,重新推导了特质波动率与预期收益率之间的关系。结果表明,在投资者无法多样化投资的前提下,即使考虑了异质信念,公司特质波动率仍然进入资产定价方程,特质波动率与预期收益率之间存在正向关系。  相似文献   

11.
In this study we examine how volatility and the futures risk premium affect trading demands for hedging and speculation in the S&P 500 Stock Index futures contracts. To ascertain if different volatility measures matter in affecting the result, we employ three volatility estimates. Our empirical results show a positive relation between volatility and open interest for both hedgers and speculators, suggesting that an increase in volatility motivates both hedgers and speculators to engage in more trading in futures markets. However, the influence of volatility on futures trading, especially for hedging, is statistically significant only when spot volatility is used. We also find that the demand to trade by speculators is more sensitive to changes in the futures risk premium than is the demand to trade by hedgers. © 2003 Wiley Periodicals, Inc. Jrl Fut Mark 23:399–414, 2003  相似文献   

12.
We study the pricing of equity options in India which is one of the world's largest options markets. Our findings are supportive of market efficiency: A parsimonious smile-adjusted Black model fits option prices well, and the implied volatility (IV) has incremental predictive power for future volatility. However, the risk premium embedded in IV for Single Stock Options appears to be higher than in other markets. The study suggests that even a very liquid market with substantial participation of global institutional investors can have structural features that lead to systematic departures from the behavior of a fully rational market while being “microefficient.”  相似文献   

13.
Compared with other developed stock markets, the Chinese stock market has a unique informational and trading environment. Given this unique environment, we find that intangible information (which is orthogonal to past accounting information) and arbitrage risk are potential sources of the value premium. In particular, our single and multivariate decomposition analyses suggest that intangible information directly contributes at least 40% to the value premium over a one-year investment horizon. Further, idiosyncratic volatility, a proxy for arbitrage risk, also influences the value premium. However, its contribution becomes insignificant once we account for the impact of intangible information on idiosyncratic volatility. Overall, our findings indicate that intangible information, which is unrelated to the firm's “fundamental” accounting-based performance measures, is the key driver of the value effects in the Chinese stock market.  相似文献   

14.
The paper investigates the information content of speculative pressure across futures classes. Long-short portfolios of futures contracts sorted by speculative pressure capture a significant premium in commodity, currency, and equity markets but not in fixed income markets. Exposure to commodity, currency, and equity index futures’ speculative pressure is priced in the broad cross-section after controlling for momentum, carry, global liquidity, and volatility risks. The findings are confirmed by robustness tests using alternative speculative pressure signals, portfolio construction techniques, and subperiods interalia. We argue that there is an efficient hedgers-speculators risk transfer in commodity, currency, and equity index futures markets.  相似文献   

15.
《Journal Of African Business》2013,14(1-2):139-154
Abstract

This paper considers two emerging markets that are under-researched, Kenya and Nigeria. It offers a comprehensive view of four time properties that emerged from the empirical time series literature on asset returns: (1) the predictability of returns from past observations; (2) the auto-regressive behavior of conditional volatility; (3) the asymmetric response of conditional volatility to innovations; and (4) the conditional variance risk premium. Results of the exponential GARCH (EGARCH) model indicate that asymmetric volatility found in the U.S. and other developed markets also characterized the Nigerian stock exchange. In Kenya, however, the asymmetric volatility coefficient is significant and positive, suggesting that positive shocks increase volatility more than negative shocks of an equal magnitude. The Nairobi Stock Exchange (KSE) returns series report negative but insignificant risk-premium parameters. In Nigeria (NSE), return series exhibit a significant and positive time-varying risk premium. The results also show that expected returns are predictable, that the auto-regressive return parameters (? 1 ) are significant in both Kenya and Nigeria. Finally, the GARCH parameter (b) is statistically significant, indicating that volatility persistence is present in the two emerging markets studied.  相似文献   

16.
The negative volatility risk premium is understood as a result for a hedging demand against market declines. Although this negative volatility risk premium is observed in most index options markets, there are some doubts about its presence in the KOSPI 200 index options market. The majority of KOSPI 200 index option holders do not possess any position in the underlying market; the composition of trading groups of the KOSPI 200 index options significantly differs from that of its underlying index; in this circumstance, the presence of a hedging demand is questionable. This study shows that volatility risk does not require a premium in the KOSPI 200 index options market. Rather, jump fears influence KOSPI 200 options. © 2009 Wiley Periodicals, Inc. Jrl Fut Mark 29:797–825, 2009  相似文献   

17.
Variance swaps are natural instruments for investors taking directional bets on volatility and are often used for portfolio protection. The empirical observation on skewness research suggests that derivative professionals may also desire to hedge beyond volatility risk and there exists the need to hedge higher‐moment market risks, such as skewness and kurtosis risks. We study two derivative contracts – skewness swap and kurtosis swap – which trade the forward realized third and fourth cumulants. Using S&P 500 index options data from 1996 to 2005, we document the returns of these swap contracts, i.e., skewness risk premium and kurtosis risk premium. We find that the both skewness and kurtosis risk premiums are significantly negative.  相似文献   

18.
This paper develops an equilibrium asset and option pricing model in a production economy under jump diffusion. The model provides analytical formulas for an equity premium and a more general pricing kernel that links the physical and risk‐neutral densities. The model explains the two empirical phenomena of the negative variance risk premium and implied volatility smirk if market crashes are expected. Model estimation with the S&P 500 index from 1985 to 2005 shows that jump size is indeed negative and the risk aversion coefficient has a reasonable value when taking the jump into account.  相似文献   

19.
Given the recent findings in the literature that idiosyncratic volatility reflects stock price informativeness, we analyze the impact of idiosyncratic volatility on many acquisition parameters. We find that idiosyncratic volatility is positively related to acquisition premium; the relationship is more significant in deals that occurred in information-poor economies where acquirers have difficulty gathering information about the targets. These deals typically involve bidders from emerging markets and those that have less experience in the target country. Idiosyncratic volatility is also positively related to acquisition completion rate, the likelihood of the bidder acquiring majority control, but is negatively related to takeover probability.  相似文献   

20.
In this study, we separately estimate the implied volatility from the bid and ask prices of deep out-of-the-money put options on the S&P500 index. We find that the implied volatility of ask prices has stronger predictive power for stock returns than does the implied volatility of bid prices. We identify two sources of the better performance of the ask price implied volatility: one is its stronger predictive power during economic recessions and in the presence of increasing intermediary capital risk, and the other is its richer information about the future market variance risk premium.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号