Diana Roman Editor

Gautam Mitra is founder and MD of Optirisk Systems. He is internationally renowned research scientist in the field of Operational Research in general and computational optimization and modeling in particular. He is an alumni of UCL and currently a visiting professor at UCL. In 2004 he was awarded the title of ‘distinguished professor’ by Brunel University in recognition of his contributions in the domain of computational optimization, risk analytics and modeling. Professor Mitra is also the founder and chairman of the sister company UNICOM seminars.

Christina Erlwein-Sayer is a consultant and associate researcher at OptiRisk Systems. Her research interests lie in financial analytics, portfolio optimisation and risk management with sentiment analysis, involving time series modelling and machine learning techniques. She holds a professorship in Financial Mathematics and Statistics at HTW University of Applied Sciences, Berlin. She completed her PhD in Mathematics at Brunel University, London in 2008. She was then a researcher and consultant in the Financial Mathematics Department at Fraunhofer ITWM, Kaiserslautern, Germany. Between 2015 and 2018, prior to joining HTW Berlin in 2019, she was a full-time senior quantitative analyst and researcher at OptiRisk Systems, London, UK. She teaches modules on statistics, machine learning and financial mathematics and is part of the CSAF faculty. Christina is an experienced presenter at conferences and workshops: amongst others, she presented at workshops in London, IIM Calcutta in Kolkata and Mumbai and in Washington to World Bank.

Kieu Thi Hoang is a Financial Analyst and Relationship Manager at OptiRisk Systems. Kieu has a bachelor’s degree (with high distinction) in International Economics from Foreign Trade University, Hanoi, Vietnam. She was among the top 10% of all the global candidates in her CFA level 2 examination (December 2020). Kieu has a strong foundation in advanced financial analysis and work experience in the finance industry. She has years of experience working at different renowned BFSI firms in Vietnam. Joining OptiRisk Systems as a Financial Analyst and Relationship Manager, she has done a lot of thorough research on alternative data in company projects. She also works with a variety of alternative data providers who are partners of her firm.

Diana Roman is a Consultant and Research Associate at OptiRisk Systems. After completing her PhD at Brunel University under late Professor Darby-Dowman and Professor Mitra, Dr Roman joined OptiRisk Systems as a software developer. She had designed the scenario-generator library which was used inSPInEthe first version of the SP Tool developed by OptiRisk Systems. Together with Professor Mitra she has written a few seminal papers on the topic of portfolio construction with downside risk control in general and use of Second Order Stochastic Dominance (SSD) in particular. Dr Roman is a senior lecturer in the Department of Mathematics at Brunel University London.

Zryan Sadik is a senior Quantitative Analyst and Researcher at OptiRisk Systems. Dr Sadik has a bachelor’s degree in Mathematics from Salahaddin University – Erbil in the Kurdistan region of Iraq. After working as an IT technician, he pursued an MSc Degree in Computational Mathematics with Modelling at Brunel University, London (2012). Dr Sadik completed his PhD in Applied Mathematics with a thesis on the ‘Asset Price and Volatility Forecasting Using News Sentiment’ at Brunel University, London (2018). His research interests include news sentiment analysis, macroeconomic sentiment analysis, stochastic volatility models, filtering in linear and nonlinear time series applying Kalman filters, volatility forecasting as well as optimization and risk assessment. His current research interests lie in the areas of empirical finance and quantitative methods, and the role of Alternative data in financial markets. He has been involved in developing predictive models of sentiment analysis, and sentiment-based trading strategies for the last seven years. These models and strategies are developed in C, C++, MATLAB, Python and R as appropriate. His prior studies include the impact of macroeconomic news on the spot and futures prices of crude oil, and the impact of firm-specific news on the movement of asset prices and on the volatility of asset price returns. Dr Sadik is fluent in Kurdish (his native language), as well as in English and Arabic.