Abstract
In this study, we investigate whether public awareness of positive or negative possible incidents pertaining to the bitcoin ecosystem are related to bitcoin price and we model bitcoin price volatility taking into consideration public awareness. We take a middle-of-the-road approach, by using a simpler – and thus less data demanding - proxy for public awareness compared to studies that have used complex models that include many parameters to capture the relationships and factors in the ecosystem, but at the same time, a richer approach compared to approaches that simply use the volume of searches for “bitcoin” and its “price” as a proxy in their models. Specifically, we use six different Google Trends queries as proxies in our models: three searches for positive incidents, and three for negative ones. We employ a dataset with monthly price data that covers the time period from September 1st 2011 to December 31st 2019 and we use GARCH and EGARCH models to test whether public awareness of positive or negative possible incidents pertaining to the bitcoin ecosystem is related to bitcoin price and to model price volatility. Results show that majority of our proxies of public awareness are significantly related to price. Moreover, our EGARCH model has detected an asymmetry pertaining to the price volatility’s reaction to price news, specifically an “anti-leverage effect”, that is, the price volatility is more sensitive to good financial news rather to bad news. In addition, we detected a significant effect of both old and novel news.
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Google, according to Nielsen, collects more than 60% of online queries, which makes it the leader in search engines. People feel quite comfortable with Google, so they express themselves without hesitation, even for taboo ideas. The Google Trends tool can provide data related to Google search queries and in this way, intrinsic or specific people's interests can be easily retrieved compared to other research methods where researchers may not have such capabilities to achieve similar or same results. Therefore, Google Trends can serve as a research tool due to the reliability and leadership of Google in this field. Google Trends was introduced in 2006 by Google. However, it does contain data from 2004 onwards. It is open access and free to all people [31].
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Georgiou, I., Georgiadi, A., Sapuric, S. (2020). Positive and Negative Searches Related to the Bitcoin Ecosystem: Relationship with Bitcoin Price. In: Themistocleous, M., Papadaki, M., Kamal, M.M. (eds) Information Systems. EMCIS 2020. Lecture Notes in Business Information Processing, vol 402. Springer, Cham. https://doi.org/10.1007/978-3-030-63396-7_10
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