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Speed of Price Adjustment in Indian Stock Market: A Paradox

机译:价格调整的速度在印度股市:悖论

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This paper compares how fast the information and news flows are incorporated into the stock index and prices of its constituent stocks. We follow the empirical framework provided by Kayal and Maheswaran (J Emerg Mark Finance 30, S112-S135, 2018a) using the extreme value volatility estimators over rolling window multiple days' horizon to compare the speed of price adjustment to the market information flows. This study uses the daily price data of Nifty index and the individual stock prices of the fifty constituent stocks of this index. We observe a paradox in the speed of price adjustment as the stock index exhibit continuous random walk while many of the constituent stocks exhibit excess volatility in the same time frame. We run our analysis for two different time periods. Both the time periods exhibit a similar finding.
机译:本文比较了信息和新闻流量纳入其组成股的股票指数和价格的速度。我们遵循Kayal和Maheswaran提供的经验框架(J HERMERMARC MITANCE 30,S112-S135,2018a)使用滚动窗口的极值波动率估计数多天的视野,以比较对市场信息流量的价格调整速度。本研究采用了漂亮指数的日常价格数据和本指数的五十个组成股的个人股票价格。当股指表现出连续随机步行时,我们遵守价格调整速度的悖论,而许多组成股在同一时间框架中表现出过多的波动性。我们对两个不同的时间段进行了分析。时间段都表现出类似的发现。

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