股票价格波动对银行稳定影响的理论及经验分析

商业银行直接或间接地参与股票市场,就会因股票价格的波动影响银行资产质量进而影响银行资产负债表和银行稳定。理论和实践证明股票价格的急剧波动和银行部门不稳定性扩散之间存在紧密的联系;同时,银行信贷的扩张对股票价格的波动有很大影响。对我国的经验分析表明:银行间信贷市场与股票市场的资金连通存在较强的相关性;上市银行脆弱度与上证综合指数的相关性在5%水平上显著。在综合经营的大背景下,应加强对我国金融脆弱性的识别和监管,疏通货币市场与股票市场正常的资金联系,加强对商业银行的审慎管理,银行自身也要加强风险管理。     

股票价格波动对银行稳定影响的理论及经验分析

随着商业银行直接或间接地参与股票市场,从而为股价波动影响商业银行资产负债表和银行稳定留下空间。理论和实践证明,股票价格的急剧波动和银行部门不稳定性扩散之间存在紧密的联系。对我国的经验分析表明:银行间信贷市场与股票市场的资金联通存在较强的相关性;上市银行脆弱度与上证综合指数的相关性在5％水平上显著。所以应该采取措施疏通货币市场与股票市场正常的资金联系,并且加强对商业银行的审慎管理。     

我国银行资金与股票市场关系的实证研究

本文从实证的角度研究了我国银行资金与股票市场的关系。我们的统计数据支持如下几个观点：居民储蓄与股票市场资金供给呈负相关关系；股票市场走势与居民储蓄呈负相关关系；股票市场融资量与银行对金融企业的贷款呈正相关关系。本文在实证分析的基础上也给出了相应的政策建议。     

银行股板块对上证综合指数的影响分析

随着工商银行、农业银行等银行大盘股的连续上市交易,银行股板块对证券市场以及上证综合指数的影响越来越大,其股票价格波动将会直接导致综合指数的涨跌,因而在研究上证综合指数变动趋势的过程中,银行股板块具有较重要的参照作用。本文通过对银行股板块对上证综合指数影响的探讨,对二者之间的关系有了更深入的认识,银行股板块在整个上海证券交易所市场中所占的权重为35%;相关分析发现银行股板块与上证综合指数之间存在较强的正相关关系,相关系数为0.857;回归分析表明,当银行股板块整体波动1%时,上证综合指数将波动0.64%,通过研究进一步认清了银行股板块对我国上证综合指数的影响,为投资者在投资过程中提供了一定的参考决策。     

银行信贷与股票价格动态关系研究

本文采用五变量VAR模型对我国银行信贷与股票价格之间的动态关系进行实证分析,发现股票价格的上涨会导致银行信贷的扩张,但银行信贷扩张不是股票价格上涨的原因。基于此,本文提出对银行信贷的调控要考虑股票市场的影响。在股票市场繁荣的时候应该通过增加股票供给、丰富投资产品等措施防止股市泡沫的扩大,降低市场对股价升幅的预期,同时密切关注银行信贷资金的流向,防止资金由实体经济大量流向股票市场;而在股票市场萧条的时候,放松银行信贷并不能阻止股票价格下跌,稳定股票市场的关键是增强投资者信心,改善投资者对未来股票价格的预期。     

银行股板块对上证综合指数的影响分析

随着工商银行、农业银行等银行大盘股的连续上市交易,银行股板块对证券市场以及上证综合指数的影响越来越大,其股票价格波动将会直接导致综合指数的涨跌,因而在研究上证综合指数变动趋势的过程中,银行股板块具有较重要的参照作用.本文通过对银行股板块对上证综合指数影响的探讨,对二者之间的关系有了更深入的认识,银行股板块在整个上海证券交易所市场中所占的权重为35％;相关分析发现银行股板块与上证综合指数之间存在较强的正相关关系,相关系数为0.857;回归分析表明,当银行股板块整体波动1％时,上证综合指数将波动0.64％,通过研究进一步认清了银行股板块对我国上证综合指数的影响,为投资者在投资过程中提供了一定的参考决策.     

我国股票市场和汇率市场的波动溢出效应及非对称性研究

本文运用GARCH族模型系统分析了疫情发生后我国汇率市场和股票市场的波动溢出效应及其非对称性。实证结果发现：第一,BEKK-GARCH模型结果表明股票市场对汇率市场存在单向的、不对称的波动溢出效应。第二,TGARCH模型表明股票市场和汇率市场都存在非对称性,股票市场和汇率市场中坏消息引起的波动比同等好消息引起的波动要大。第三,DCC-GARCH模型表明股票市场上涨与人民币升值之间存在正向动态相关性,且相关关系愈加紧密。基于此,本文从完善人民币汇率形成机制、加强跨境资金监管、稳步推进资本项目扩大开放等方面提出相关政策建议。     

跨境资本流动对银行风险的影响——基于风险累积效应和风险传染效应的视角

从风险累积效应和风险传染效应两个视角揭示跨境资本流动对银行风险的影响机理,并基于2000年第一季度至2020年第四季度时间序列数据进行经验检验,结果表明:跨境资本流动、跨境资本流入、跨境资本流出均显著增加了银行风险,且三者对银行风险的影响均存在显著的风险累积效应;跨境资本流动、跨境资本流入、跨境资本流出均通过影响金融机构人民币各项贷款余额同比增速、金融机构外币各项贷款余额同比增速、金融机构本外币各项贷款余额同比增速以及境内住户中长期消费贷款同比增速等信贷渠道显著提高银行风险承担水平,实现银行风险累积,从而增加银行风险;跨境资本流动、跨境资本流入、跨境资本流出均显著提高了股票价格、房地产价格和实际汇率的波动水平,且跨境资本流动通过股票市场、房地产市场和汇率市场将波动水平传染至银行系统,增加了银行风险,股票市场、房地产市场和汇率市场更是强化了这种传染效应。     

人民币汇率与我国股价、房价的联动关系研究

近年来,我国人民币汇率形成机制、股票市场和房地产市场发生了巨大变化,人民币汇率和股价、房价之间的信息传导和波动关联备受瞩目。本文采用VAR-MGARCH-BEKK模型,分析了我国人民币汇率、股价和房价之间的联动关系。研究结果表明,从波动的溢出效应来看,人民币汇率的波动率、股票价格的增长率和房地产价格的增长率之间存在非常明显的波动溢出效应;从资产价格的水平影响来看,人民币汇率与股票价格、房地产价格等国内资产价格的水平相关性较弱,而股票价格对房地产价格的影响较明显,并就该结论提出了相关的理论解释和政策建议。     

股指期货推出对中国上市银行市值的影响分析

本文对股指期货推出后中国上市银行市值将可能发生的变化进行了分析。在考察国外主要股票市场推出股指期货前后市场走势的变化，以及对主要成分股股价的影响的基础上，对我国推出股指期货后可能对股票市场以及上市银行市值产生的影响进行预测，并对银行股的可操纵性进行分析。推出股指期货前后短期内，由于机构抢筹等原因，股票现货市场一般会出现较大波动，但长期中由于无风险套利行为的存在，市场走势仍由基本面决定。根据国际经验，中国上市银行市值在短期内会受到一定影响，但长期来看被市场作为操纵工具的可能性不大。     

A Note on Affordability and the Optimal Share Price

Despite the increase in institutional ownership, decreased trading costs, and increased real personal savings, we find that the average stock price is lower today than it was in the 1920s. In the aggregate, the propensity to split is a function of recent market performance, personal savings, and the desirability of appearing to be a small firm. Our results indicate that, after decades of inflation and the average stock price falling, splitting stocks to return to an "affordable" trading range must be rejected as an explanation. This suggests that other economic forces are behind splits, whether traditional or behavioral in nature.     

股票期权行权价格的局限与修订研究

股票期权计划在国内外受到广泛关注,并日益成为公司经理人激励的主要手段。但由于我国股票市场的弱式性,以股价为基础的股票期权并不能真正反映经理人的业绩表现。为此,本文引入超额EVA增长率和行业股票价格参数对现行以股票价格为基础的股票期权行权价格进行修订,以使经理人的激励报酬和业绩贡献变动相结合。与此同时,本文还引入行业分类指数变动率以消除股市波动对行权日行权价格的影响。调整后的行权价格更加真实的反映了经理人的业绩。论文最后指出该方案所具有的优势,认为经过修订的股票期权行权价格在我国更具有现实意义。     

投资者关注与股价崩盘风险:抑制还是加剧?

本文以2010—2017年中国A股上市公司为样本,考察了投资者关注影响股价崩盘风险的客观表现和传导路径。研究发现,投资者关注度的提高会显著加剧下一期的股价崩盘风险,存在“关注度的崩盘效应”;分组检验发现,关注度的崩盘效应仅在机构持股比例低的公司和市场处于牛市状态下存在;路径检验发现,投资者关注不存在信息路径,没有改善公司信息透明度,但存在部分的情绪路径,提高了股价同步性和投资者情绪,从而加剧了股价崩盘风险。建议监管部门重视投资者关注对股价带来的冲击,通过进一步提高机构者持股比例,缓解情绪过热导致的定价错误程度,降低股价崩盘风险。     

The Impact of Oil Price Shocks on the Returns in China’s Stock Market

The main goal of this paper is to study the relationship between oil price shocks and mainland China’s stock market. From empirical study, we have found that the impact of oil price shocks on stock prices in China has been mixed. In contrast to the conventional wisdom that higher oil prices may cause lower stock prices, positive shocks to oil-market-specific demand resulted in both higher real oil prices and higher stock prices, which helps explain the boom of the Chinese stock market as oil prices were increasing in 2007. However, global oil demand and supply shocks had no significant effects.     

Managerial actions and nominal stock price levels

We examine nominal and real stock prices and the sequential price pattern of stock dividends and stock splits. We find that the average stock price has been fairly stable over time except for two decades in the beginning and end of the twentieth century. Inclusion of these periods yield a decline over time which is generally consistent with the drop in price levels found by Chittenden et al. [2010. “A Note on Affordability and the Optimal Share Price.” Financial Review 45: 205–216]. In a multivariate setting, the frequency of stock dividends and stock splits is positively related to the frequency for these events the prior year and recent market return. In further tests of the price change we find a positive relationship to the median price change for stock dividends/splits and negatively to labour income growth for stock splits. These findings indicate that stock price reduction via stock dividends and splits attracts individual investors as income grows. One key conclusion is that the primary reason for any stock action, dividend or split, is to fit the ‘norm’ stock price level of the market.     

Non‐operating earnings and firm risk*

We find that non‐operating earnings reduce total earnings volatility, stock price volatility, idiosyncratic risk, and crash risk. The risk‐reducing effects of non‐operating earnings are higher than those of operating earnings for risk measures based on stock market data. Non‐operating earnings serve to mitigate risks among firms with operating losses, high financial leverage, high growth uncertainty, and low‐ability managers.     

Regime-Dependent Effect of Crude Oil Price on BRICS Stock Markets

In this study, the dynamic relation between global crude oil prices and stock prices is investigated in terms of crude oil-exporting and -importing countries. The relationship between crude oil prices and stock prices is examined for BRICS countries (Brazil, Russia, India, China, and South Africa) for the periods of January 1995 to December 2016 by means of the Markov Switching Vector Autoregression (MS-VAR) model. The impulse-response analysis results suggest that the responses of the stock market to an oil price shock vary over the regimes for all countries. Specifically, we find that the responses of the stock market to an unexpected oil price shock are positive and statistically significant in the high-volatility regime in all countries except for China, and these results suggest that the increase in oil prices may be evaluated by demand-side shock in these countries.     

External Conditions,the Evolution of Financial Risks,and the Informational Content of Stock Prices: The Case of Chile

ABSTRACT

In this article, we find that the dynamics of local financial risks in the Chilean stock market are associated with the evolution of external economic conditions, with a strong reduction in both idiosyncratic and systematic risks during periods of stable conditions. Despite this, we fail to find any significant change in the traditional measures of stock price synchronicity developed in the R² literature in our sample. We argue that these measures neglect the relationship between stock prices and fundamentals and find that the strength of the association between prices and fundamentals changes during our sample period, being much stronger during times of stable external conditions and diminished stock price volatility.     

股价信息、价格运动特征与资源配置效率

行为金融学的研究表明,股价不仅受到公司基本价值有关信息的影响,而且还受到市场公共信息的影响。通过研究股票价格运动特征可以有效地判断股价所包含的信息特征,解释股票市场的资源配置效率状况以及市场发育程度。现阶段我国股价还不能传递足够多的企业特定信息,引导资源配置的信号功能较弱,这一结论和对资源配置效率的实证结果相吻合,即股市对金融资源的低效配置问题还相当突出。