The impact of own-country and cross-border events on asset markets is an important subject. We examine the co-movement of conditional volatilities in Korean won, Chinese yuan and Taiwanese dollar NDF markets. Using a multivariate GARCH model, we test whether the announcement of Chinese yuan’s appreciation on 21st July, 2005 affects the co-movements of Asian NDF rates. Our findings show Japanese yen spot rate has influences on three Asian NDF markets. Furthermore the most liquid Korean NDF rate also affects Chinese yuan and Taiwanese NDF markets. Our results are consistent with the findings that Asian NDF markets also show strong co-movements, especially after the announcement date of Chinese yuan’s appreciation on 21st July, 2005.