We analyse questions of arbitrage in financial markets in which asset prices change in time as stationary stochastic processes. The main focus of the paper is on a model where the price vectors are independent and identically distributed. In the framework of this model, we find conditions that...

We develop a measure of how information events impact investors' perceptions of risk that is broadly applicable and simple to implement. We derive this measure from an option-pricing model where investors anticipate an announcement that simultaneously conveys information on the announcer's...

What is the market impact of predictable order flow? Leveraged exchange-traded products are useful for answering this question because they generate daily rebalancing flows whose size, sign and timing are predictable. This paper presents new evidence from the market for leveraged volatility...

Following the 2004 introduction of VIX futures, they have become an increasingly important hedging instrument and aid for portfolio diversification. We examine changes in the futures basis which, owing to their unique characteristics, can be interpreted as changes in expectations of future VIX...

Bitcoin has attracted a wealth of attention in the media and by investors alike and this paper investigates whether Bitcoin can act as a hedge or safe-haven against world currencies. Contrary to previous studies, we assess the relationship between Bitcoin and currencies at the hourly frequency...

At the dawn of a potential rise in rates triggered by Central Banks in both Europe and the United States, doubts are being raised about the ability of low-volatility portfolios to continue to deliver robust performance. We quantify this latent performance lag and provide empirical explanations,...

Algorithmic Trading (AT) and High Frequency (HF) trading, which are responsible for over 70\% of US stocks trading volume, have greatly changed the microstructure dynamics of tick-by-tick stock data. In this paper we employ a hidden Markov model to examine how the intra-day dynamics of the stock...

This paper examines the relationship between volatility and the probability of occurrence of expected extreme returns in the Canadian market. Four measures of volatility are examined: implied volatility from firm option prices, conditional volatility calculated using an EGARCH model,...

This paper proposes an alternative model to Brownian-type models for high frequency market price processes which is much closer to reality and thus more appropriate for use in process behavior and optimization research. The proposed model is a modified Poisson process

The relationship between gold and the stock market has attracted considerable attention in both the academic literature and financial media since gold is perceived a safe haven for equity. This describes the empirical phenomenon that gold holds its value or exhibits positive returns in a...