Table 1 Summary of literature review
From: Whether and when did bitcoin sentiment matter for investors? Before and during the COVID-19 pandemic
Paper | Data Source | Data Period | Method | Findings |
|---|---|---|---|---|
Eom et al. (2019) | Google trend analytics | Oct2011-May2017 | VAR | Investor sentiment on Bitcoin can predict Bitcoin volatility |
Burggraf et al. (2020) | Google trend analytics | Apr2013-Feb2019 | OLS VAR | The FEAR index negatively related to Bitcoin returns |
Bouri et al. (2020) | Twitter feed data | 7Aug2015-11Mar2020 | GARCH | Investor happiness explains the volatility connectedness |
Chen et al. (2020) | Google trend analytics | 15Jan2020-24Apr2020 | VAR | Fear sentiment can explain negative Bitcoin returns |
Jo et al. (2020) | Google trend analytics | 18Jul2010-26Feb2018 | VAR | VIX and Bitcoin returns are negatively related |
Oad Rajput et al. (2020) | Google trend analytics | 2013–2018 | OLS GARCH | Bitcoin sentiment positively related to Bitcoin returns |
Subramaniam and Chakraborty (2020) | Google trend analytics | Jan2013-Mar2018 | VAR | Investors pay attention to the frequent news making and ranked cryptos at all phases |
Anamika et al. (2021) | Sentix index | Sep2017-Feb2020 | OLS VAR | Bitcoin returns positively react to the changes in Sentix |
Goodell and Goutte (2021) | Bitcoin prices | 31Dec2019-29Apr2020 | Wavelet | Levels of COVID-19 caused a rise in Bitcoin prices |
Guegan and Renault (2021) | Twitter feed data | Aug2017-Dec2019 | OLS VAR | Justify an existing causality between return and sentiment |
Guler (2021) | Google trend analytics | Feb2018-Aug2020 | GARCH VAR | Investor sentiment positively related to Bitcoin returns |