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Generalized supADF (GSADF) test procedure developed by Phillips et al. (Testing for multiple bubbles: Historical episodes of …
Persistent link: https://www.econbiz.de/10011812671
Generalized sup ADF (GSADF) test procedure developed by Phillips, Shi, and Yu (Testing for Multiple Bubbles: Historical Episodes …
Persistent link: https://www.econbiz.de/10011674010
This review discusses methods of testing for explosive bubbles in a time series. A large number of recently developed … for dating the explosive (bubble) regimes. Special attention is devoted to time-varying volatility in the errors. Also …
Persistent link: https://www.econbiz.de/10013236082
The scaling properties of two alternative fractal models recently proposed to characterize the dynamics of stock market prices are compared. The former is the Multifractal Model of Asset Return (MMAR) introduced in 1997 by Mandelbrot, Calvet and Fisher in three companion papers. The latter is...
Persistent link: https://www.econbiz.de/10013122371
It is well known that intraday volatilities and trading volumes exhibit strong seasonal features. These seasonalities are usually modeled using dummy variables or deterministic functions. Here, we propose a test for seasonal long memory with a known frequency. Using this test, we show that...
Persistent link: https://www.econbiz.de/10011673153
important question of how oil market uncertainty affects stock market bubbles remains unanswered. In this paper, we first use … negative bubbles in the short-, medium- and long-term stock markets of the G7 countries. While detecting major crashes and … of oil price uncertainty on the bubbles indicators. After controlling for the impacts of output growth, inflation, and …
Persistent link: https://www.econbiz.de/10015210403
This paper deals with cryptocurrency bubbles. First, it points out that a number of recent papers on cryptocurrency … bubbles are awed due to an insufficient consideration of the fundamental value of cryptocurrencies. As even fiat money is said … to exhibit features of bubbles, the same applies to cryptocurrencies. Thus, any empirical investigation into either the …
Persistent link: https://www.econbiz.de/10012033146
In this study, we consider a four-regime bubble model under the assumption of time-varying volatility and propose the … algorithm of estimating the break dates with volatility correction: First, we estimate the emerging date of the explosive bubble …
Persistent link: https://www.econbiz.de/10014354236
hypothesis of a rational bubble. -- Fractional integration ; bubbles ; changing persistence …
Persistent link: https://www.econbiz.de/10003672198
This study examines the price explosiveness of stocks whose purchase Robinhood restricted during the GameStop episode. We find that those “meme stocks” comprise multiple periods of explosiveness, indicating that they are unlikely to be an epiphenomenon. We also document evidence of price...
Persistent link: https://www.econbiz.de/10013404321