如题

NO.PZ2018111501000017 问题如下 Raymon a US analyst, is managing a funwith EUR-nominateassets. The USEUR spot rate is 1.1338, one-yeforwarexchange rate is 1.1369, while Raymond forecasts the expectespot rate is 1.1315. Assume the funperformanis measurein US the roll yielis: 0.27% -0.27% -0.20% A is correct. 考点roll yiel 解析“Assume the funperformanis measurein US的意思是衡量业绩使用的是US即本币是US目前Raymon有外币EUR计价的资产，将来要卖EUR，因此是short EUR forwarshort 外币EUR forwarroll yiel= F-S/S=(1.1369-1.1338)/1.1338=0.27% 我理解是short EUR forwar头寸，用（f-s）/s=roll yiel进行计算但是说这个funperformanis measurein US话是否要把S 和 F转换成 EUR/US进行计算，如果转换了是否是变成long forwaron US头寸能整体梳理一下这道题么？谢谢

NO.PZ2018111501000017问题如下 Raymon a US analyst, is managing a funwith EUR-nominateassets. The USEUR spot rate is 1.1338, one-yeforwarexchange rate is 1.1369, while Raymond forecasts the expectespot rate is 1.1315. Assume the funperformanis measurein US the roll yielis: 0.27% -0.27% -0.20% A is correct. 考点roll yiel 解析“Assume the funperformanis measurein US的意思是衡量业绩使用的是US即本币是US目前Raymon有外币EUR计价的资产，将来要卖EUR，因此是short EUR forwarshort 外币EUR forwarroll yiel= F-S/S=(1.1369-1.1338)/1.1338=0.27% 题目并没有说short 还是 long fw 所以ROLL YIEL的正负 怎么判断啊？或者是说分子应该F-S 还是S-F?

NO.PZ2018111501000017问题如下 Raymon a US analyst, is managing a funwith EUR-nominateassets. The USEUR spot rate is 1.1338, one-yeforwarexchange rate is 1.1369, while Raymond forecasts the expectespot rate is 1.1315. Assume the funperformanis measurein US the roll yielis: 0.27% -0.27% -0.20% A is correct. 考点roll yiel 解析“Assume the funperformanis measurein US的意思是衡量业绩使用的是US即本币是US目前Raymon有外币EUR计价的资产，将来要卖EUR，因此是short EUR forwarshort 外币EUR forwarroll yiel= F-S/S=(1.1369-1.1338)/1.1338=0.27% 请问老师既然问的是美元的roll yiel为什么不能用[1/1.1369-1/1/1338]/(1/1.1338)来算呢？

NO.PZ2018111501000017 Q1 f-s/s 这里的s指的是现在的spoter不是将来预期的spot是么 Q2 这个rolling yiel是没怎么理解 能讲解一下么