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Because implied volatility is essential for pricing options, analyzing derivative strategies and measuring risk in investment portfolios containing derivatives, understanding variations in implied volatility also becomes vital. Aside from a secular trend, volatility clustering and calendar...
Persistent link: https://www.econbiz.de/10013004111
How does emotional expression in online reviews affect sales? To answer this question, a model is constructed based on theories of sentiment. This model is tested experimentally. Controlling for online review valence online review emotionality affects product sales. The impact is moderated by...
Persistent link: https://www.econbiz.de/10014146352
A Granger Causality study is conducted to understand the causality loop between online reviews and consumer acquisition in YouTube. This paper aims to refute the long-lasting assumption that online reviews are exogenous to sales. By doing so, this paper posts a challenge in understanding the...
Persistent link: https://www.econbiz.de/10014035265