By Irene Aldridge Selling volatility has been a popular trading strategy among hedge funds over the past couple of years. At the core of the strategy’s popularity is the observation that volatility becomes considerably more severe when the markets are moving down rather than when they are rising up (see, for example, “The Cross-Section of Volatility and Expected Returns” by Ang, Hodrick, Xing and Zhang, Journal of Finance, 2005). In other words, selling volatility is a complicated way of betting on the rise of the market. During the current administration’s tenure, the U.S. markets have consistently risen, while dampening volatility in the process and generating excitement amongRead More →

Abstract In the classic portfolio management theory by Markowitz (1952), the weights of the optimized portfolios are directly proportional to the inverse of the asset correlation matrix. However, most of contemporary portfolio optimization research focuses on optimizing the correlation matrix itself, and not its inverse. We show that this is a mistake. Specifically, from the Big Data perspective, we prove that the inverse of the correlation matrix is much more unstable and sensitive to random perturbations than the correlation matrix itself. As such, optimization of the inverse of the correlation matrix adds more value to optimal portfolio selection than that of the correlation matrix. WeRead More →

In the next five years, big data analysis is poised to become one of the most important and competitive skill sets around. Portfolio analysis in particular is where pension funds are focusing their big data investments. Big data is a set of techniques embedded in the latest, most sophisticated technologies: social media analytics, digital video recognition, 5G cellular technology and much more. The capabilities of big data are incredibly powerful and extend far beyond traditional systems. Supported as a spying technology in the World War II and later, the Cold War, core big data techniques were developed in the 1940s, 1960s and 1980s and areRead More →

By Irene Aldridge The history of Finance is full of Mathematical and technological revolutions. With the expansion of computer technology, mathematical innovations are not only abstractly interesting, but also very fast and profitable. Most recently, mathematical innovations in Finance first generated opportunities in quant techniques that were followed by the revolution of high-frequency trading, Now, the opportunity expands as Big Data techniques are implemented within Finance. Many people are still puzzled by what is so special about Big Data. After all, Econometrics and other data processing tools have been used in Finance for decades. It is true that Econometrics comprises a part of Big DataRead More →

Irene Aldridge’s latest paper on Big Data optimization in portfolio management is the first to show that spectral decomposition of an inverse of the correlation matrix delivers 400% improvement over the equally-weighted and other common portfolio optimization schemes. Read more here: More →

By Irene Aldridge The word on the street is that no indicator is more reliable about one’s beliefs of future economic conditions than one’s trading activity. It is fascinating to observe institutional investor activity immediately before and after the announcement that the U.S. Senate has conditionally passed the proposed new tax law in the context of understanding the thoughts and beliefs of institutional investors as expressed by their often billion-dollar investing decisions. The new tax regime slashes corporate tax rates from 35% down to 21%, potentially resulting in direct increase in after-tax earnings, and, therefore, stock prices in 2018. From a cursory analysis, it wouldRead More →

By Irene Aldridge This article first came out on Huffington Post: Understanding the capabilities and disruptive threats of big data is a must for all sophisticated finance professionals today. This article considers the development and current state of Big Data Finance, as it relates to innovation in investment management, intermediation (broking), insurance, risk management, and most other aspects of Finance. Big Data Finance is a revolution as well as an evolution that has come prominence several decades. Chartists and other technical analysts since at least the 1920s have utilized market data to derive upcoming patterns of prices. Perhaps the first formal breakthrough in BigRead More →

Only investors that harness Big Data and track risks in real-time survive, an interview with Irene Aldridge. By PlanetCompliance, July 28, 2017 Everything changes. Financial Services. Markets. Risk. Technology and innovation transform an entire industry and if you want to survive, you need to change, too. In order to change though, a profound understanding of the new technologies is necessary. PlanetCompliance spoke to Irene Aldridge, the author of the bestseller “Real-Time Risk” about what investors and finance professionals need to know about Fintech and the way Big Data is transforming the world we live in. There are without doubt not enough women in finance. Not in traditional banking,Read More →

This article first appeared in the European Financial Review, By Irene Aldridge With all the changes happening to the markets the past several years, author Irene Aldridge discusses how technology has significantly shaped the execution quality for portfolio managers. The article emphasises the realities of a data-driven industry wherein better information means better success.   Investment managers are increasingly concerned about the quality of their execution. Indeed, how you execute the orders in today’s markets may make or break investment profitability. Changes to the markets over the past several years place execution quality at the top the priority list for investment managers. Most ofRead More →