好處是最後的結果接近buy and hold,中間需要的決策很少,很難犯錯
壞處是沒有利用上股價的波動給的機會
好處是最後的結果接近buy and hold,中間需要的決策很少,很難犯錯
壞處是沒有利用上股價的波動給的機會
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