The narrative of a Bitcoin is a bubble is very common. We employ statistical techniques to
empirically evaluate such claim. A branch of literature links the existence of a bubble in …

This article reviews the theoretical literature on asset price bubbles, with an emphasis on the
martingale theory of bubbles. The key questions studied are as follows: First, under what …

Over the last 10 years or so a mathematical theory of bubbles has emerged, in the spirit of a
martingale theory based on an absence of arbitrage, as opposed to an equilibrium theory …

Along with the advancement of the Internet in the last decade, researchers have increasingly
identified the web as a research platform and a data source, pointing out its value for labour …

We inspect the price volatility before, during, and after financial asset bubbles in order to
uncover possible commonalities and check empirically whether volatility might be used as …

At odds with the common “rational expectations” framework for bubbles, economists like
Hyman Minsky, Charles Kindleberger and Robert Shiller have documented that irrational …

Financial bubbles arise when the underlying asset's market price deviates from its
fundamental value. Unlike other bubble tests that use time series data and assume a …

We extend the literature on crash prediction models in three main ways. First, we explicitly
relate crash prediction measures and asset pricing models. Second, we present a statistical …

In this paper we employ deep learning techniques to detect financial asset bubbles by using
observed call option prices. The proposed algorithm is widely applicable and model …

1. Background The second author started using the bond stock earnings yield differential
(BSEYD) model while in Tokyo consulting at the Yamaichi Research Institute in 1988. The …