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Essays on Finance and Risk
Kowalczyk, Dorota ; Zemčík, Petr (advisor) ; Poghosyan, Tigran (referee) ; Vecer, Jan (referee)
Dorota Kowalczyk: Essays on Finance and Risk Abstract This dissertation consists of three chapters that empirically investigate questions of increasing relevance in the banking risk and financial economics literature. The first chapter studies bank risk in the context of its joint determination with bank liquidity and capital in the Eurozone. The second chapter examines the banks' appetite for risk using the comprehensive credit register of the Czech National Bank. Finally, the last chapter refers to model risk and analyzes the ability of the selected term structure models to value the interest rate swaps in the Polish market. The first chapter analyzes the coordination of bank risk, liquidity and capital in the presence of securitization. Its outcome contributes to the debate on the effectiveness of the banking regulations. My findings with regard to the simultaneity of capital and risk decisions are consistent with previous empirical studies. Incorporation of bank liquidity permits me to establish the presence of the coordination of risk and liquidity decisions. At the same time, I find no evidence of the direct joint determination of capital and liquidity. Finally, the first chapter partially confirms the theoretical implications of Repullo (2005). The second chapter, coauthored with Adam Geršl, Petr...
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Essays on International Currency Markets
Poghosyan, Tigran ; Kočenda, Evžen (advisor) ; Orlowski, Lucjan (referee) ; Kutan, Ali M. (referee)
1 ABSTRACT Essays on International Currency Markets By Tigran Poghosyan This dissertation consists of three essays on foreign exchange risks in international financial markets and financial integration in the new EU member countries. The first essay focuses on the determinants of foreign exchange risks in post-transition economies. Using a unique dataset on foreign and domestic currency denominated deposit rates in Armenia, we estimate excess returns on foreign exchange operations, which are free from the impact of country risk and transaction costs. The calculated excess returns are largely positive (existence of the premium for risk) and exhibit substantial variation over time. The two-currency interdependent factor affine term structure model captures the time- variability of the risk premium and predicts that the Central Bank interventions in the foreign exchange market and ratio of volumes of foreign and domestic currency denominated deposits (proxy for external shocks) are important explanatory variables driving the premium. The GARCH-in-Mean approach supports the previous conclusion and suggests that the Central Bank interventions (policy factor) are significant for the premium on the short horizon, while deposit ratios (fundamental factor) are more influential on the long horizon. It was also found...
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