外汇市场与股票市场间的溢出效应分析

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3.0 侯斌 2024-11-19 4 4 1.98MB 63 页 15积分
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随着中国股票市场的快速发展,股票市场在中国金融市场中的地位愈显
要,逐渐成为中国金融市场的重要组成部分,外汇市场与股票市场间关联性
随之成为学术界研究和金融监管部门关注热点。但中国的股票市场属于强噪声
市场,运用传统的分析方法很容易让某些重要的信息被强噪声所掩盖,使得研究
结果在很大程度上具有局限性和非稳健性。
为了能更好地分析外汇市场与股票市场间的溢出效应,本文将小波多分辨分
析与 VAR-MGARCH-BEKK模型相结合,并引入了 Wald检验,从时域和频域两个
角度来综合析。小波多分辨分析可以高对信号分解、重构以及特征提取的有
效性,具有出主要因优异特点能够将股票市场数据中那些由偶然因素
引起的涨跌消除因此本文运用小波分辨分析来研究我国外汇市场与股票市
场间的溢出效应。首 先,对我国外汇市场与股票市场的收益率序列进行信号分解,
通过对比高频信号和低频信号各自原始中所占的能比,可以发现:股票
市场中高频号在信号中所占的能量要远远大于低频信号在原始信号中所
占的能量比;而外汇中,信号和信号在原信号所占的能量比基
本持平。进而说我国股票市场主要到短因素的影响,波动较大,而
汇市场则波动较小。
其次,利用 VAR-MGARCH-BEKK 模型从均值溢出和波动溢出两个角度深入
研究不同交易周期上外汇市场与股票市场间的溢出效应以期能有效地把握外汇
市场与股票市场间的溢出规律,在一定程度上规避风险。通过观察实证分析的结
果,我们可发现:外汇市场与股票市场一直存在着非对称双向均值溢出
应,并且股票市场对外汇市场的均值溢出效应更为显著,溢出程度较低,
外汇市场对股票市场的均值溢出程度更大外汇市场与股票市场间的波动溢出效
应则表现出由双向溢出转变为仅存在股票市场对外汇市场单向溢出的规律,且股
票市场对外汇市场的波动溢出效应要强于外汇市场对股票市场的波动溢出效应。
因此,投资需要密与外汇市及股市场相关任何信息努力
掘出其中潜在的有用信息,选择适当的资产组合,以达到套利避险的目的。政府
也应充分认识到我国外汇市场与股票市场间溢出效应的有效性,在肯定其资源优
化配置、风险规避、保值增值等功能的同时,也要不断加强对我国金融风险
掌控能力,逐步健我国的金融风险预警系统,避免金融风险传递,以推动金融
市场健康稳定发展。
关键词:外汇市场 股票市场 多分辨分析 均值溢出 波动溢出
ABSTRACT
With the rapid development of Chinese stock market, it has gradually been an
important part of Chinese financial market, more and more important as time goes by,
which makes the relevance between the foreign exchange market and the stock market
also become a hot academic research and financial regulators concerned. However, the
Chinese stock market is a market which has much strong noise, using the traditional
methods is very easy to make some important information concealed by strong noise,
which makes the research results have limitations and non-robustness in a large
extent.
In order to analyze the spillover effects of the foreign exchange market and the
stock market in a better way, this paper analysis from both the time domain and the
frequency domain comprehensively. Firstly, we uses the wavelet multi-resolution and
the VAR-MGARCH-BEKK model, then the Wald test was introduced in. The wavelet
multi-resolution can improve the effectiveness of signal decomposition, reconstruction
and feature extraction, also can highlight the main factors. It is a good way to
eliminate the ups and downs of the stock market data that caused by accidental factors.
Therefore, we uses wavelet multi-resolution to analysis the spillover effect between
the Chinese foreign exchange market and the stock market. First of all, using signal
decomposition on the Chinese foreign exchange market and the stock market return
rate series. By comparing the specific capacity of the high frequency signals and the
low frequency signals in their original signals, we can find that the specific capacity of
the high frequency signals is much larger than the low frequency signals in their
original signals, but in the foreign exchange market, the specific capacity of the high
frequency signals and the low frequency signals in their original signals almost same.
This fully shows that the Chinese stock market is mainly affected by the short-term
factors, and its fluctuation is very big, while the fluctuation of the foreign exchange
market is much smaller relatively.
Secondly, to analysis the spillover effects of the foreign exchange market and the
stock market at the different trade cycle, we analysis from two aspects including the
mean spillover and the volatility spillover, meanwhile we use the
VAR-MGARCH-BEKK model. All this just in order to effectively grasp the spillover
regularity between the foreign exchange market and the stock market, to evade the
risk at a certain extent. Empirical results show that: the two-way asymmetric mean
spillover effect has always existed between the foreign exchange market and the stock
market, and the mean spillover effect of the stock market on the foreign exchange
market is more significant, but the spillover level is lower, while the mean spillover of
the foreign exchange market on the stock market is much higher. The volatility
spillover effect between the foreign exchange market and the stock market were
changed from bilateral spillovers to only exist in the one-way spillover of the foreign
exchange market on the stock market, and the volatility spillover effect of the stock
market on the foreign exchange market is stronger than the volatility spillover effect
of the foreign exchange market on the stock market.
Therefore, to achieve the purpose of hedging, investors need to pay more
attention to any information related to the foreign exchange market and the stock
market, strive to dig out the potential useful information, then select the appropriate
portfolio. The government also should be fully aware of the effectiveness of the
spillover effect of the Chinese foreign exchange market and the stock market,
establish perfect financial risk control and warning mechanism in the premise of
recognizing of its resource allocation optimization, risk aversion, preserve and
increase the value of the function, effectively prevent and defuse financial risks passed
between financial markets, so as to promote the healthy and stable development of the
financial markets.
Key WordForeign exchange market, Stock market, Multi-resolution
analysis, Mean spillover, Volatility spillover
中文摘要
ABSTRACT
第一章 ............................................................................................................... 1
1.1 研究背景 ............................................................................................................ 1
1.2 研究意义 ............................................................................................................ 3
1.3 研究现状 ............................................................................................................ 4
1.3.1 国外研究现状 .......................................................................................... 5
1.3.2 国内研究现状 .......................................................................................... 6
1.4 创新点 ................................................................................................................ 8
1.5 研究方法 ............................................................................................................ 9
1.6 研究框架 ............................................................................................................ 9
第二章 市场间溢出效应的相关理论 ........................................................................ 11
2.1 金融市场波动的概念 ....................................................................................... 11
2.2 溢出效应的概念 .............................................................................................. 12
2.3 外汇市场与股票市场间溢出效应的形成机理 .............................................. 13
2.3.1 信息外溢——内在原因 ........................................................................ 13
2.3.2 金融管制放松——客观原因 ................................................................ 14
2.3.3 投资者行为——直接原因 .................................................................... 14
2.4 外汇市场与股票市场间溢出效应的传导机制 .............................................. 16
2.4.1 以利率为中介要素的传导机制 ............................................................ 16
2.4.2 以贸易余额为中介要素的传导机制 .................................................... 20
2.4.3 以货币供应量为中介要素的传导机制 ................................................ 20
2.4.4 以心理预期为中介要素的传导机制 .................................................... 21
第三章 市场间溢出效应的研究方法 ....................................................................... 22
3.1 小波分析理论 ................................................................................................... 22
3.1.1 连续小波变换 ......................................................................................... 22
3.1.2 离散小波变换 ........................................................................................ 23
3.1.3 小波多分辨分析 .................................................................................... 24
3.1.4 常见的小波类型 .................................................................................... 25
3.2 向量自回归模型(VAR 模型) ..................................................................... 26
3.3 GARCH 族模型 ................................................................................................ 27
3.3.1 一元 GARCH 模型 ................................................................................ 27
3.3.2 多元 GARCH 模型 ................................................................................ 28
3.4 Wald 检验 .......................................................................................................... 31
第四章 外汇市场与股票市场间溢出效应的实证分析 ........................................... 33
4.1 数据与小波函数的选取 .................................................................................. 33
4.1.1 数据的选取 ............................................................................................ 33
4.1.2 小波函数的选取 .................................................................................... 34
4.2 基本统计特征分析 .......................................................................................... 35
4.2.1 描述性统计 ............................................................................................ 36
4.2.2 平稳性检验 ............................................................................................ 37
4.2.3 序列自相关性检验 ................................................................................ 38
4.2.4 序列异方差检验 .................................................................................... 39
4.3 外汇市场与股票市场间的溢出效应研究 ...................................................... 40
4.3.1 外汇市场与股票市场间的均值溢出效应 ............................................ 40
4.3.2 外汇市场与股票市场间的波动溢出效应 ............................................ 43
第五章 结论 ............................................................................................................... 50
5.1 本文的主要结论及分析 .................................................................................. 50
5.2 对策及建议 ...................................................................................................... 51
参考文献 ........................................................................................................................ 54
在读期间公开发表的论文和承担科研项目及取得成果 ............................................ 59
............................................................................................................................ 60
第一章
1
第一章
1.1 研究背景
1990 年底上海证券交易所成立,1991 6月深证证券交易所成立,这两个证
券交易所的相继成立标志着我国股票市场顺利诞生。之后,股票市场迅速发展,
逐渐成为市场经济发展过程中不可或缺的一部分。对国家而言,股票市场是适应
现代化社会生产的客观需求,也是实现资本资源优化配置的场所;对企业而言,
股票市场是最直接的筹资场所,也是显示企业经营能力的场所;对个人而言,股
票市场是最灵活的投资场所也是最有的投场所。可见,合理的股票价格
不仅有助于提高市场的流动性,还可以提升市场的活跃度,成功实现资本资源
的优化配置。但过度异常的股票价格波动很可会严重坏市场的格机制,
至会影响到股票市场的市场效率,弱化资本资源的优化配置功能,而使股票市
场的监管难度增加。
纵观我国股票的历程,大可以我国股票市场分为五个段:
一个阶段是我国股票市场的初创阶段1990 年-1991 年)1990 年底,上海证券
交易所正式成立,紧接着,深证证券交易所于 1991 6月应运而生。这两家证券
交易所的陆续成立,成功地结束了我国没有证券交易所的历史,我国证券市场正
式形成。第二阶段是我国股票市场的试验阶段1992 年-1997 年)。我国的股票
市场在此时饱受着所有制问题的困扰,当时影响股票市场是否能长期存在的最
主要原因是股票市场该姓资还是姓社。这个问题直到 1997 9月才首次从宪
法的层面上得到回答,中共十五大在当时给出的回答是股份制是公有制的一种特
殊形式。直到这时,我国股票市场才找到了自己的定位。第三个阶段是我国股
票市场的规范阶段1998 年-2001 年)。虽然我国的股票市场在前几年里迅猛发
展,但仍然还没有形成系统的供求机制以及善的市场监体制投资也不
建立起正确的投资理一时之间,火爆的票市场中现了许多题,股价收
益比率一直保持在较高的水平,黑市行为持续
1998 年开始,我国正式开始使用法律法规手段对股票市场进行规范管理。但直到
2001 年底为止,我国股票市场逐渐建立了以《公司法》、《证券法》为核心,以
行政法规为补充,以部门规章为主体的系统的证券期货市场法律法规体系。第四
个阶段是我国股票市场的转轨阶段2002 年-2004 年)。随着我国股票市场逐步
实现法制化和规范化,中央高层领导对股票市场重新新的任,那就是
股票市场的发展还考虑到国有济改国家经济结的发全局由于
当时没有能充分认识到我国股票市场的特殊性,也没能分了解到股权分置问
题并没有得彻底的解决,所以的股票市并没实现所预的改经济结
摘要:

摘要随着中国股票市场的快速发展,股票市场在中国金融市场中的地位愈显重要,逐渐成为中国金融市场的重要组成部分,外汇市场与股票市场间的关联性也随之成为学术界研究和金融监管部门关注的热点。但中国的股票市场属于强噪声市场,运用传统的分析方法很容易让某些重要的信息被强噪声所掩盖,使得研究结果在很大程度上具有局限性和非稳健性。为了能更好地分析外汇市场与股票市场间的溢出效应,本文将小波多分辨分析与VAR-MGARCH-BEKK模型相结合,并引入了Wald检验,从时域和频域两个角度来综合分析。小波多分辨分析可以提高对信号分解、重构以及特征提取的有效性,具有突出主要因素的优异特点,能够将股票市场数据中那些由偶然...

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作者:侯斌 分类:高等教育资料 价格:15积分 属性:63 页 大小:1.98MB 格式:PDF 时间:2024-11-19

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