A pr 2 00 7 Stock market return distributions : from past to present
نویسنده
چکیده
We show that recent stock market fluctuations are characterized by the cumulative distributions whose tails on short, minute time scales exhibit power scaling with the scaling index α > 3 and this index tends to increase quickly with decreasing sampling frequency. Our study is based on high-frequency recordings of the S&P500, DAX and WIG20 indices over the interval May 2004 May 2006. Our findings suggest that dynamics of the contemporary market may differ from the one observed in the past. This effect indicates a constantly increasing efficiency of world markets.
منابع مشابه
Long Memory in Stock Returns: A Study of Emerging Markets
The present study aimed at investigating the existence of long memory properties in ten emerging stock markets across the globe. When return series exhibit long memory, it indicates that observed returns are not independent over time. If returns are not independent, past returns can help predict future returns, thereby violating the market efficiency hypothesis. It poses a serious challenge to ...
متن کاملInvestigation the impact of US Unilateral Withdraw from JCPOA on the Market Return of Export-Oriented Companies listed on Tehran Stock Exchange by Emphasis on herding Behavior (semi-parametric approach)
Today, export-oriented companies are very important. These companies need a lot of investment to expand their activities, which is one of the best ways to finance the stock market and since market return is one of the factors influencing people's decisions to direct their capital to this market return. Therefore, the analysis of factors affecting this market return is importants and hence the m...
متن کاملبررسی عوامل موثر بر بازده غیر عادی کوتاه مدت شرکتهای تازه پذیرفته شده در بورس اوراق بهادار تهران
The lack of sufficient information about the past and present performance of newly accepted companies at Tehran Stock Exchange, uncertainty in future perspective of these new companies, lack of precedent transactions for the stocks of these companies and also existence of information asymmetry between the suppliers of new stock and external investors have caused confusion in the process of pric...
متن کاملFundamentals and Stock Return in Pharmaceutical Companies: a Panel Data Model of Iranian Industry
Stock return is usually considered to be affected by firm’s financial ratios as well as economic variables. Fundamental method assume that stock returns is not solely related to the stock market. Most result come from the company condition , industry situation and whole economy. In this paper, this relationship between stock return and fundamentals is studied using the data for 22 pharmaceutica...
متن کاملModeling Stock Return Volatility Using Symmetric and Asymmetric Nonlinear State Space Models: Case of Tehran Stock Market
Volatility is a measure of uncertainty that plays a central role in financial theory, risk management, and pricing authority. Turbulence is the conditional variance of changes in asset prices that is not directly observable and is considered a hidden variable that is indirectly calculated using some approximations. To do this, two general approaches are presented in the literature of financial ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2007