Hsiao-Fen Hsiao, Szu-Hsien Lin* and Ai-Chi Hsu
This study investigated the co-movement in stock indices between Taiwan business group members to find investment arbitrage portfolios. Two investment strategies, called co-integration model and quasi-arbitrage model to arbitrage, were developed and thus allowed excess return in Taiwan capital market to be obtained. Finally, the proposed quasi-arbitrage strategy was compared with the co-integration model to identify which had the higher annual return. The empirical results showed that the co-movement in stock indices between Taiwan business group members did exist. The predicted investment annual return of the quasi-arbitrage model was higher than that of the co-integration model. Therefore, the quasi-arbitrage model was the better investment strategy.
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