We examine the existence and dates of pricing bubbles in Bitcoin and Ethereum, two popular cryptocurrencies using the Phillips et al. (2011) methodology. In contrast to previous papers, we examine the fundamental drivers of the price. Having derived ratios that are economically and...

We assess whether two classes of bubbles occur in the spot price of gold, rational speculative and periodically bursting bubbles, using gold’s lease rates for the first time in the literature as a measure of its fundamental value. This question is of particular significance as these are the...

We assess whether two classes of bubbles occur in the spot price of gold, rational speculative and periodically bursting bubbles, using gold's' lease rates for the first time in the literature as a measures of its fundamental value. This question is of particular significance as these are the...