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计算公式我会,两个问题
1) arrival cost这里是不是buy就是+1,sell就是-1,一般按照解题的话 arrival cost和index算出来应该都是正数,然后market adjusted cost算出来可能有正有负,正的就是cost,负的就是saving?
2) 我记得另一道题关于MAC的解读是the MAC is significantly lower than the arrival cost, indicating most of the expenses associated with buying xx stock is due to the effect of buying it in a rising market as opposed to the buying pressure induced by the order itself. (MAC = 5bps >0)
正数我可以理解,因为大盘涨,所以成本高,扣掉大盘涨的部分剩下的部分很少,说明大部分trading cost都是因为大盘导致的,那么这道题负数怎么理解?区别是因为这是个sell order么?卖的过程中大盘跌所以卖亏了的部分是因为大盘跌导致的?