Based on Johnson and So [11], we construct a portfolio based on the ratio of trading volume of the stock option to its underlying stock (O/S). We compare the profitability of the OS strategy with those of 52-week highs, trading volume, and price momentum strategies to examine whether OS investment returns are more profitable. We find that the longer holding period is associated with the better the OS strategy to earn returns. | The performance of trading strategies based on the ratio of option and stock volume
