We use several measures to compare the performance of a large set of Dow Jones Islamic indexes to selected benchmarks. We test the performance over the whole period and then focus on extreme events. We identify extreme events as the 100 lowest and the 100 highest conventional World Indexes daily...

We prove a general version of the super-replication theorem, which applies to Kabanov’s model of foreign exchange markets under proportional transaction costs. The market is described by a matrix-valued càdlàg bid-ask process $$(\Pi_t)_{t\in [0,T]}$$ evolving in continuous time. We propose a...

In this paper we investigate whether the empirical regularities of stock returns are independent of each other or whether any one of them implies all the others. If such a regularity exists, it is called 'fundamental' and is usually thought of as a 'deductive explanation' of the others. We...

Garbade and Silber (1979) demonstrate that an asset will be liquid if it has (1) low price volatility and (2) a large number of public investors who trade it. Although these results match nicely with common notions of liquidity, one key element is missing: liquidity also depends on (3) an asset...

The relationship between uncertainty and managerial flexibility is particularly crucial in addressing capital projects. We consider a firm that can invest in a project in either a single (lumpy investment) or multiple stages (stepwise investment) under price uncertainty and has discretion over...

We provide a historical perspective focusing on Ziemba's experiences and research on the bond-stock earnings yield differential model (BSEYD) starting from when he first used it in Japan in 1988 through to the present in 2014. The model has called many but not all crashes. Those called have high...

The aim of this paper is to investigate the relationship of price changes in the southern European E.U. member states through their stock markets and especially among the exchange markets of Portugal, Italy, Ireland, Greece and Spain, known also as the PIIGS countries. More specifically, it is...

In this paper we study portfolios that investors hold to hedge economic risks.Using a model of state-dependent utility, we show that agents economic hedging portfolios can be obtained by an intuitively appealing, risk aversion-weighted approximate replication of the economic risk variables using...

This paper examines the extent to which individual investors provide liquidity to the stock market, and whether they are compensated for doing so.We show that the ability of aggregate retail order imbalances, contrarian in nature, to predict short-term future returns is significantly enhanced...

Based upon a Markowitz methodology, this paper considers use of commodities futures as assets to enhance portfolio diversification. A very simplistic methodological approach is chosen to allow various portfolio issues to be highlighted with data from the recent financial crisis. Naïve long-only...