15****352022-08-28 15:42:46
role-return和calendar的原理一样吗
回答(1)
Essie2022-08-29 10:13:06
你好,不是一码事。roll return是转仓成本,即更新期货合约的成本。原理是因为短期合约交易比较活跃,当合约到期后,想要保持大宗商品敞口,需要续签下一段时间的合约,如果市场处于贴水状态,这时新签的合约成本会低一些,因此获得一个收益(结束了一个贵的合约,新签了一个便宜的合约)。站在long方的角度,当期货处于贴水状态时,roll return>0;当期货处于升水状态时,roll return<0。公式为:Roll return=[(Near term futures contract closing price – Farther term futures contract closing price)/(Near term futures contract closing price)]× Percentage of the position in the futures contract being rolled.
calendar spread更为简单,它就是日历价差,公式为:Calendar spread = near term futures contracts - longer term future contracts.
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