TY - UNPD A1 - Claessen, Holger A1 - Mittnik, Stefan T1 - Forecasting stock market volatility and the informational efficiency of the DAX-index options market T2 - Center for Financial Studies (Frankfurt am Main): CFS working paper series ; No. 2002,04 N2 - Alternative strategies for predicting stock market volatility are examined. In out-of-sample forecasting experiments implied-volatility information, derived from contemporaneously observed option prices or history-based volatility predictors, such as GARCH models, are investigated, to determine if they are more appropriate for predicting future return volatility. Employing German DAX-index return data it is found that past returns do not contain useful information beyond the volatility expectations already reflected in option prices. This supports the efficient market hypothesis for the DAX-index options market. T3 - CFS working paper series - 2002, 04 KW - market efficiency KW - implied volatility KW - GARCH KW - combined forecasting KW - Deutschland KW - Börsenkurs KW - Volatilität KW - Prognoseverfahren KW - Exponential smoothing KW - Zeitreihenanalyse KW - Index-Futures KW - Kapitalmarkteffizienz KW - ARCH-Prozess KW - GARCH-Prozess Y1 - 2002 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/4499 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30-9948 N1 - Revised edition published in: European Journal of Finance, 8, 2002, 302-321. ER -