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ASYMMETRY AND LONG MEMORY FEATURES IN VOLATILITY: EVIDENCE FROM KOREAN STOCK MARKET

윤성민|강상훈
한국경제학회 (The Korean Economic Association)|2008.12|The Korean Economic Review|제24권 제2호|pp. 383-412

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참고문헌

키워드

VolatilityLong MemoryAsymmetryKorean Stock MarketFIAPARCH
주제분류경제학

초록

We investigate the asymmetry and long memory features in the volatility of the Korean stock market. For this purpose, we examine some GARCH class models that can capture these volatility stylized factors in the KOSPI 200 Index return data. From the results of estimation and diagnostic tests, we find that the decrease in volatility asymmetry in the crisis period is due to the introduction of derivatives markets (index futures and option trading) and the market liberalization, and that the degree of long memory features becomes lower after the financial crisis, implying that the financial crisis has the efficiency of the Korean stock market.

Abstract

We investigate the asymmetry and long memory features in the volatility of the Korean stock market. For this purpose, we examine some GARCH class models that can capture these volatility stylized factors in the KOSPI 200 Index return data. From the results of estimation and diagnostic tests, we find that the decrease in volatility asymmetry in the crisis period is due to the introduction of derivatives markets (index futures and option trading) and the market liberalization, and that the degree of long memory features becomes lower after the financial crisis, implying that the financial crisis has the efficiency of the Korean stock market.

참고문헌 (44)

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