Özet:

The main purpose of this study is to investigate price bubbles in various asset prices, which have a significant impact on economic indicators and have been frequently emphasized recently. In this context, the paper aims to investigate the presence of price bubbles in Brent crude oil (XBR) as commodity, Gold (XAU) as precious metal and GameStop Corp. (GME) as stock prices with GSADF tests, as well as to determine date stamps of the price bubbles. For this purpose, the existence and development periods of price bubbles were determined by estimating a recursive Right Tailed Generalized Supremum Augmented Dickey Fuller Test (GSADF) developed by Phillips, Shi and Yu (2015). Daily closing prices of Brent crude oil (XBR), Gold (XAU) and Game Stop Corp (GME) stocks on USD basis between 02.01.2020-27.10.2021 were used in the study. In line with the empirical findings obtained, it has been determined that there is a price bubble in Gold (XAU) prices only in the period of 21.07.2020-11.08.2020. As of the analysis period, a price bubble has been observed in Brent Oil (XBR) prices, especially in March every year. It has been understood that the speculative price bubble in GameStop Corp (GME) stock prices as of January 2021 is the longest and most severe. There is no common date and/or date range for the price bubbles in the asset prices subject to the analysis.

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