This thesis consists out of three essays on systemic risk in the banking system and stock market contagion. The first essay (Trapp and Wewel, 2013, "Transatlantic systemic risk") investigates which type of systemic risk – common shocks or contagion – dominated in the US and European
banking systems at the onset of the Subprime Crisis. The second essay (Döring, Hartmann-Wendels, and Wewel, 2013, "What can systemic risk measures predict?") contributes to the literature on the assessment of systemic risk measures implementing three prominent systemic risk measures in a common framework and evaluating the latter as a tool for banking regulation. The third essay (Wewel, 2013, "Are earthquakes less contagious than bank failures? Comparative impact assessment of the Tohoku earthquake 2011 and the Lehman bankruptcy 2008") contributes to the literature on international stock market contagion investigating pre-and post-event cross-market correlation on national and international stock markets following the Japanese Tohoku earthquake on March 11, 2011