Measures have recently been proposed to restrict trading in crude oil and gasoline. This proposal is based on the presumption that market speculators are artificially raising the prices of these products; in other words, that the market is being manipulated. In this short note I will review the...

Exploiting cross-sectional and time-series variations in European regulations during the July 2008–June 2009 period, we show that: (1) prohibition on covered short selling raises bid-ask spread and reduces trading volume, (2) prohibition on naked short selling raises both volatility and...

High-frequency trading has become a dominant force in the U.S. capital market, accounting for over 70% of dollar trading volume. This study examines the implication of high-frequency trading for stock price volatility and price discovery. I find that high-frequency trading is positively...

This paper, explores devaluation as a reason for the lack of long term foreign capital investments in countries such as Turkey. It touches the application of International Accounting Standards in Turkish Capital Market as Turkey's being a candidate for European Union. The detrimental...

We examine the relationship between firms' quarterly earnings report timing and uncertainty before quarterly earnings announcements. Prior research provides conflicting predictions on how investor uncertainty and report timing are related. Using implied volatilities from equity options and the...

In this article, the Universal Approximation Theorem of Artificial Neural Networks (ANNs) is applied to the SABR stochastic volatility model in order to construct highly efficient representations. Initially, the SABR approximation of Hagan et al. [2002] is considered, then a more accurate...

This study addresses whether an auditor change (a resignation or a dismissal) mitigates information asymmetry as measured by market liquidity or trading activity. For auditor dismissals our results show no effect on our sample firms' market liquidity or trading activity. By contrast, for auditor...

ROE of firm is known to revert to its mean level in the future. In this study we will show that speed of mean reversion of ROE depends on historical volatility of ROE from data of Japanese equity. It indicates that (low) volatility of historical ROE is important factor for earnings quality in Japan