Reliable estimates of variances and covariances are crucial for portfolio management and risk controlling. This paper investigates alternative methods to estimate time varying variance-covariance matrices: ordinary estimates and exponentially weighted moving averages in comparison to Markov...

Business managers will gain a basic understanding of the complex world of finance with Introduction to Finance: Markets, Investments, and Financial Management, 15th Edition. This text presents a balanced survey of the three main areas of finance: institutions and markets, investments, and...