英文标题:
《Observability of Market Daily Volatility》
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作者:
Filippo Petroni and Maurizio Serva
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最新提交年份:
2015
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英文摘要:
We study the price dynamics of 65 stocks from the Dow Jones Composite Average from 1973 until 2014. We show that it is possible to define a Daily Market Volatility $\\sigma(t)$ which is directly observable from data. This quantity is usually indirectly defined by $r(t)=\\sigma(t) \\omega(t)$ where the $r(t)$ are the daily returns of the market index and the $\\omega(t)$ are i.i.d. random variables with vanishing average and unitary variance. The relation $r(t)=\\sigma(t) \\omega(t)$ alone is unable to give an operative definition of the index volatility, which remains unobservable. On the contrary, we show that using the whole information available in the market, the index volatility can be operatively defined and detected.
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中文摘要:
我们研究了1973年至2014年道琼斯综合指数中65只股票的价格动态。我们证明,可以定义每日市场波动率$\\sigma(t)$,这是直接从数据中观察到的。该数量通常由$r(t)=\\sigma(t)\\omega(t)$间接定义,其中$r(t)$是市场指数的每日收益,$\\omega(t)$是具有消失平均值和单一方差的i.i.d.随机变量。单是$r(t)=\\sigma(t)\\omega(t)$的关系无法给出指数波动性的有效定义,这仍然是不可观察的。相反,我们表明,利用市场上可用的全部信息,可以对指数波动性进行操作性定义和检测。
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分类信息:
一级分类:Quantitative Finance 数量金融学
二级分类:Statistical Finance 统计金融
分类描述:Statistical, econometric and econophysics analyses with applications to financial markets and economic data
统计、计量经济学和经济物理学分析及其在金融市场和经济数据中的应用
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