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Taiwan's stocks have been declining since 2009, while futures, options and ETFs have been on a growing trend. This study focuses on whether the decline in Taiwan's stock trading in recent years is due to the shift in trading volume of other markets. The previous literatures on futures and options before and after the listing of the impact on the spot market, mostly focused on the impact of the volatility of the underlying assets, the volume of the study is scarce. In this paper, the general linear regression model is used to analyze the turnover factors of Taiwan index futures, Taiwan index options and ETF, and the multivariate regression model is established for the independent variable trading volume. Trading volume changes, and analyze the correlation between them and the ups and downs, the empirical results are as follows: 1. Individual point of view, Taiwan index futures, Taiwan index options, ETF market turnover of Taiwan stocks have a consistent effect on the replacement effect. 2. When the Taiwan index futures, Taiwan index options, ETF market exists at the same time, the option and the ETF still have a substitute relationship with the Taiwan stock. However, the trading volume of the index futures is significantly positively correlated with the trading volume of the Taiwan Stocks. That is, and Taiwan shares have a complementary relationship.
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