PurposeThe purpose of this study is to examine how the volatility interruption (VI) mechanisms affect idiosyncratic volatilities in Korean stock markets.Design/methodology/approachCollecting the South Korea Stock Market (KOSPI) data from June 15, 2015 to March 31, 2019, we collect each residual, εi,t, from three different estimated models: capital asset pricing model (CAPM), FF3 and FF5. To estimate the conditional idiosyncratic volatility, the authors employ two conditional time-varying measurements: GARCH and TGARCH.FindingsThe results show that the conditional idiosyncratic volatility increases when stock prices reach the upper and lower static limits, indicating the implementation of adopting static VI mechanism neither stabilize market conditions nor reduce excess volatility along with the existence of price limits.Originality/valueAlthough market regulators and policymakers improve market conditions with the advanced VI mechanism, the empirical results show the adverse effect of the mechanism. Not allowing investors to earn above average returns without accepting above average risks makes Korean stock markets inefficient along with advanced VI mechanisms.
Guided by the extreme value theory, this study empirically investigates the impact of tail risk measures on financial distress of publicly traded bank holding companies (BHCs) in the United States. Our results show that tail risk measures namely, value‐at‐risk and expected shortfall, are significantly and positively related to banks distress risk. Implying that BHCs with more frequent extreme negative daily equity returns induce higher tail risks, thereby increasing their likelihood of experiencing financial distress. Our results also show that tail risk measures enhance the explanatory power of traditional models explaining banks distress risk based on accounting information. These results indicate that market discipline is generally beneficial in managing and regulating banks, bolstering claims of the importance of macro‐prudential supervision of financial institutions.
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