نتایج جستجو برای: بیثباتی volatility
تعداد نتایج: 19457 فیلتر نتایج به سال:
the emphasis of this paper is the role of volatility indices on improvement artificial neural networks (anns) forecasting models for the daily usd/eur and usd/gbp exchange rates two volatility indices are used. first; the realized volatility, which is based on intra-daily data, and second the garch volatility. they are applied into the model in two ways. firstly, the lagged volatility index is ...
in this paper, we have examined abrupt changes in volatility of tepix index in tehran stock exchange during august 23, 2010 to june 12, 2014. applying the iterated cumulative sum of squares (icss) algorithm proposed by inclan and tiao (1994) and the modified version of this algorithm consisting kappa 1 and kappa 2 test statistics developed by sansó et al. (2004), we have specified that the dete...
this paper investigates empirically the effect of volatility of the exchange rate of the u.s. dollar vis-à-vis the euro on u.s. stock market volatility while controlling for a number of drivers of stock return volatility. using a garch(1, 1) model and using weekly data covering the period from the week of january 1, 1999 through the week of january 25, 2010, it is found that the 9/11 terrorist ...
inflation has always been an economic problem and different solutions have been proposed to control it. although it is said that “higher output lowers inflation rate” but it is true when other factors are constant. this study searches the answer to the following question: “what is the effect of inflation rate and output in a case that inflation rate and output growth has a volatility trend?” to...
F orecasting the volatility of a financial asset has wide implications in finance. Conditional variance extracted from the GARCH framework could be a suitable proxy of financial asset volatility. Option pricing, portfolio optimization, and risk management are examples of implications of conditional variance forecasting. One of the most recent methods of volatility forecasting is Real...
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 ...
In this article the relationship between market return and volatility is examined by applying out- of- sample methodology and ARCH (M) class models in the Tehran Stock Exchange (TSE) and international stock exchanges. The results are inconsistent with portfolio theory implications in NASDAQ, ISE and TSE. However I found only negative relationship between unexpected volatility and monthly return...
This paper examines the role of different exchange rate regimes on relationship between exchange rate volatility and economic growth. To investigate this relationship, information of 53 countries with floating and fixed exchange rate regimes in the period of 1987-2016 are considered. GARCH technique is used to estimate exchange rate volatility and Difference GMM technique for estimating the mo...
Price shocks lead to oil price volatility in world oil markets. In response to this volatility, economic growth may take different regime and behavior patterns in different situation. Investigating this multi behavior patterns can be useful for policymakers to reduce the effect of oil price volatility. In this study, an EGARCH model has developed using the seasonal data of OPEC oil basket nomin...
درباره تحولات سوریه تفاسیر متفاوتی وجود دارد. برخی از تحلیلگران چنین فرایندی را ناشی از ارادة گروههای اجتماعی در سوریه میدانند. آنان در تحلیل خود، رویکرد مبتنی بر اقتدارگرایی سیاسی دولت سوریه را عامل اصلی بحران اجتماعی میدانند. گروه دیگری بر این اعتقادند که سوریه مرز ژئوپلتیکی رادیکالیسم سیاسی محافظهکاری جهان غرب محسوب میشود. بنابراین امریکا و کشورهای محافظهکار جهان عرب در صدد هستند تا زمینههای...
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