Auflistung LIF-SAFE Working Papers nach JEL-Klassifizierung "C58"

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    • A Modern Take on Market Efficiency: The Impact of Trump’s Tweets on Financial Markets 

      Abdi, Farshid; Kormanyos, Emily; Pelizzon, Loriana; Getmansky, Mila; Simon, Zorka (2021-05-06)
      We focus on the role of social media as a high-frequency, unfiltered mass information transmission channel and how its use for government communication affects the aggregate stock markets. To measure this effect, we ...

    • Estimation and Model-Based Combination of Causality Networks 

      Bonaccolto, Giovanni; Caporin, Massimiliano; Panzica, Roberto Calogero (2017-01-31)
      Causality is a widely-used concept in theoretical and empirical economics. The recent financial economics literature has used Granger causality to detect the presence of contemporaneous links between financial institutions ...

    • Market impact of government communication: The case of presidential tweets 

      Abdi, Farshid; Kormanyos, Emily; Pelizzon, Loriana; Getmansky, Mila; Simon, Zorka (2021-10-06)
      "We propose the ""President reacts to news"" channel of stock returns by studying the financial market impact of the Twitter account of the 45th president of the United States, Donald Trump. We use machine learning algorithms ...

    • Networks in Risk Spillovers: A Multivariate GARCH Perspective 

      Billio, Monica; Caporin, Massimiliano; Frattarolo, Lorenzo; Pelizzon, Loriana (2018-08-01)
      We propose a spatiotemporal approach for modeling risk spillovers using time-varying proximity matrices based on observable financial networks and introduce a new bilateral specification. We study covariance stationarity ...

    • Systemic Co-Jumps 

      Caporin, Massimiliano; Kolokolov, Alexey; Renò, Roberto (2016-10-10)
      The simultaneous occurrence of jumps in several stocks can be associated with major financial news, triggers short-term predictability in stock returns, is correlated with sudden spikes of the variance risk premium, and ...

    • 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 Impact of Network Connectivity on Factor Exposures, Asset Pricing and Portfolio Diversification 

      Billio, Monica; Caporin, Massimiliano; Panzica, Roberto Calogero; Pelizzon, Loriana (2016-10-01)
      We show that property damages from weather-related natural disasters significantly weaken the stability of banks with business activities in affected regions, as reflected in lower z-scores, higher probabilities of default, ...

    • Time-varying granger causality tests for applications in global crude oil markets: A study on the DCC-MGARCH Hong test 

      Caporina, Massimiliano; Costola, Michele (2021-10-14)
      Analysing causality among oil prices and, in general, among financial and economic variables is of central relevance in applied economics studies. The recent contribution of Lu et al. (2014) proposes a novel test for ...