Download PDF Introduction When managing a portfolio, the fundamental problem is to find investments with excess risk-adjusted expected rates of return. Once the manager has identified some favourable opportunities and is ready to assemble the portfolio, they still need to decide how much capital, as a fraction of the value Read more…
Download PDF Introduction In this article, we discuss an equity Pairs Trading strategy using the S&P 500 index components. Pairs Trading is a statistical arbitrage strategy that involves simultaneously taking long and short positions in two financial assets, expecting their spread to converge to the mean. However, the process of Read more…
Differences between historical realized volatility and option implied volatility has for long been known as a potential indicator for volatility mispricing. To our knowledge, the first well-known academic study on the topic was conducted by Goyal and Saretto in 2009 and published as the paper ‘Cross-section of Option Returns and Read more…
In finance, a covariance matrix can be a useful tool to estimate the cross correlations between different stocks. However, historical data contains random noise, which can alter the underlying information. Here we illustrate how Random Matrix Theory can be used to filter a diagonalisable matrix and how information about the market Read more…