漲跌幅限制效應(yīng)的實證研究
本文關(guān)鍵詞: 漲跌幅限制 波動 價格發(fā)現(xiàn) 流動性 廣義矩估計 回歸分析 出處:《天津大學》2013年碩士論文 論文類型:學位論文
【摘要】:本文為充分了解漲跌幅限制給中國整個股票市場以及個股帶來的影響,在事件研究法的基礎(chǔ)上,把對上海A股市場的實證研究分為兩個方面展開。第一方面,本文運用ARCH模型族和多種統(tǒng)計檢驗等方法對1996年12月16日重新設(shè)立漲跌幅限制前后兩階段的個股價格行為的變化進行分析,利用GARCH模型估計股價長期波動,用自相關(guān)函數(shù)揭示股價依賴性,并綜合比較多種流動性指標,從而深刻理解漲跌幅限制設(shè)立給股市帶來的整體效應(yīng)。研究發(fā)現(xiàn)在設(shè)立漲跌幅限制后,市場波動降低了,股票均衡價格的發(fā)現(xiàn)并未被延遲,,但對流動性產(chǎn)生了一定的不利影響。第二方面,本文運用廣義矩估計(GMM)對股價觸發(fā)漲跌停的頻率和股價影響因素進行回歸分析,并以2010年1月1日前后兩階段作為對比,對各個變量的變化率同樣進行回歸分析,以驗證是否存在某些股票特征可以明顯影響股價觸發(fā)漲跌停的次數(shù),并且了解這些因素的變化對于股價觸發(fā)漲跌停頻率變化的影響。研究發(fā)現(xiàn)公司規(guī)模、市盈率與股價觸發(fā)漲跌停頻率顯著正相關(guān),系統(tǒng)風險與股價觸發(fā)漲跌停頻率顯著負相關(guān),交易頻率的變化情況對股價觸發(fā)漲跌停的次數(shù)變化有顯著的正向影響。
[Abstract]:In order to fully understand the impact of price limit on the whole stock market and individual stocks in China, the empirical research on Shanghai A-share market is divided into two aspects on the basis of incident study. In this paper, ARCH model family and various statistical tests are used to analyze the changes of price behavior of individual stock in two stages before and after the re-establishment of the price limit in December 16th 1996, and the GARCH model is used to estimate the long-term fluctuation of stock price. Using autocorrelation function to reveal stock price dependence, and compare various liquidity indexes synthetically, so as to deeply understand the overall effect on stock market caused by setting up the limit of price and decline, the study found that after the establishment of the limit of price and decline, the volatility of the market decreased. The discovery of stock equilibrium price is not delayed, but it has a certain adverse effect on liquidity. Secondly, this paper uses generalized moment estimation (GMMM) to analyze the frequency of stock price triggering fluctuation and the influencing factors of stock price. Taking the two stages before and after January 1st 2010 as a comparison, regression analysis is carried out on the rate of change of each variable to verify whether there are some stock characteristics that can significantly affect the number of times that the stock price triggers the fluctuation limit. It is found that the company size, price-to-earnings ratio and the frequency of price rise and fall limit are significantly positively correlated, while the systemic risk is negatively correlated with the frequency of price rise and fall limit. Changes in trading frequency have a significant positive effect on the number of times a stock price triggers a limit.
【學位授予單位】:天津大學
【學位級別】:碩士
【學位授予年份】:2013
【分類號】:F832.51;F224
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