NO.PZ2018091706000059
问题如下：
Six months ago, a dealer sold CHF 1 million forward
against the GBP for a 180-dayterm at an all-in rate of 1.4850 (CHF/GBP). Today,
the dealer wants to roll this positionforward for another six months (i.e., the
dealer will use an FX swap to roll the positionforward).The following are the
current spot rate and forward points being quoted for theCHF/GBP currency pair:
The cash flow that the dealer will realize on
the settlement date is closest to an:
选项：
A. inflow
of GBP 4,057
inflow
of GBP 8,100
outflow
of GBP 5,422
解释：
180
days ago, the dealer sold 1 million CHF against the GBP for1.4850. Today, the
dealer will have to buy CHF 1 million to settle the maturing forwardcontract,
so the CHF amounts will net to zero on settlement day. Because these CHFamounts
net to zero, the cash flow on settlement day is measured in GBP. The GBPamount
is calculated as follows: 180 days ago, the dealer sold CHF 1 million against
theGBP at a rate of 1.4850, which is equivalent to buying GBP
673,400.67(1,000,000/1.4850). That is, based on the forward contract, the
dealer will receive GBP673,400.67 on settlement day. Today, the dealer is
buying CHF 1 million at a spot rateof 1.4940 (the mid-market spot rate, because
this is an FX swap). This transaction isequivalent to selling GBP 669,344.04
(1,000,000/1.4940). That is, based on the spottransaction, the dealer will pay
out GBP 669,344.04 on settlement day. Combining thesetwo legs of the swap
transaction, we have:
(1,000,000/1.4850)-
(1,000,000/1.4940) = GBP 4,056.63
解析：180天前，该交易商以1英镑兑1.4850瑞郎的价格卖出了100万瑞郎。那么现在，经销商必须购买100万瑞士法郎来结算到期的远期合约，那么结算日的瑞士法郎净额将为零。由于这些瑞士法郎的净值为零，所以结算日的现金流以英镑计算。英镑金额计算如下:180天前，经销商以1.4850的汇率卖出100万瑞郎兑1英镑，相当于买入673,400.67英镑(100万/1.4850)。也就是说，根据远期合同，经销商在结算日收到GBP 673,400.67。今天，该交易商以1.4940瑞郎的即期利率(中间市场即期利率，因为这是一种外汇互换)买入100万瑞郎。这笔交易相当于卖出669,344.04英镑(1,000,000英镑/1.4940)。也就是说，基于现货交易，该交易商将在结算日支付669,344.04英镑。清算这两部分，可以得到:
(1000000/1.4850)-(1000000/1.4940)=
4056 .63英镑
给的答案并没有考虑rolling contract， 如果考虑rolling contract， 在不考虑有没有正确选项的情况下应该怎么做？
What Is Roll Forward?
Roll forward refers to extending the expiration or maturity of an option, futures contract, or forward by closing the initial contract and opening a new longer-term contract for the same underlying asset at the then-current market price.
Basics of Roll Forward
A roll forward includes two steps. First, the initial contract is exited. Then, a new position with a later expiry is initiated. These two steps are usually executed simultaneously in order to reduce slippage or profit erosion due to a change in the price of the underlying asset.
