• Impact of public news sentiment on stock market index return and volatility 

      Anese, Gianluca; Corazza, Marco; Costola, Michele; Pelizzon, Loriana (2021-10-11)
      Recent advances in natural language processing have contributed to the development of market sentiment measures through text content analysis in news providers and social media. The effectiveness of these sentiment variables ...
    • Momentum-managed equity factors 

      Flögel, Volker; Schlag, Christian; Zunft, Claudia (2019-07-22)
      Managed portfolios that exploit positive first-order autocorrelation in monthly excess returns of equity factor portfolios produce large alphas and gains in Sharpe ratios. We document this finding for factor portfolios ...
    • Option-Implied Information and Predictability of Extreme Returns 

      Vilkovz, Grigory; Xiaox, Yan (2013-01-28)
      We study whether prices of traded options contain information about future extreme market events. Our option-implied conditional expectation of market loss due to tail events, or tail loss measure, predicts future market ...
    • Systemic risk for financial institutions of major petroleum-based economies: The role of oil 

      Khalifa, Ahmed; Caporin, Massimiliano; Costola, Michele; Hammoudeh, Shawkat (2017-11-05)
      This paper examines the relationship between oil price movements and systemic risk of many financial institutions in major petroleum-based economies. We estimate ?CoVaR for those institutions and thereby observe the presence ...
    • The Effects of a Low Interest Rate Environment on Life Insurers 

      Berdin, Elia; Gründl, Helmut (2015-01-01)
      Low interest rates are becoming a threat to the stability of the life insurance industry, especially in countries such as Germany, where products with relatively high guaranteed returns sold in the past still represent a ...