Whether a company raising funds by issuing depositary receipts (DR) at abroad has different spillover effects due to the disparity of market efficiency and drives different arbitrage space and whether the stock prices between different countries have linkage effect are always the important factors to affect the decisionmaking of the investors. Taking the depositary receipts in Taiwan as an example, this paper makes analysis and comparison of average annual wages of the arbitrage between a parent company and depositary receipts by the application of quasiarbitrage operation and ARMA Prediction Model according to the stock price ratio of a parent company to depositary receipts, and the results show that the average annual wage ratio is all positive by quasiarbitrage operation mode and that quasiarbitrage strategy can harvest high wage and have less transaction times in the duration to decrease the transaction cost.