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Option has been a hot research subject at home and abroad because of its flexible trading strategies and reward patterns, and the application of seller strategy has been the focus of many studies in recent years. It has been pointed out in the literature that the option seller has a higher trading win rate than buyers’, so it is quite attractive for investors who pursue long-term stable returns. In this paper, we use the data of Taiwan index options published by Taiwan Futures Exchange to construct a backtracking test and dynamic trading system with SQL database and Python language. Under the proposed dynamic model, we verify whether the seller's high-frequency trading strategy can gain positive returns by entering the market at different dates before the settlement during 2018 and 2020. Also, we compare the returns of the proposed model with that of a hold-to-maturity strategy. In contrast to the previous literature, this paper uses a strategy of dynamic price adjustment and takes into account the night trading session. The empirical results show that the dynamic adjustment strategy outperforms the hold-to-maturity strategy when considering the maximum strategic loss. It is also found that the return of entering the market before the settlement date is significantly higher than that of the day-trade strategy. Finally, investors are reminded that the strangle strategy adopted in this paper has unlimited risk. Hence, attention should be paid to such characters of the risky strategy. |