1. 賣一個買權 short a call option
收取權利金 $0.01*50,000=$500
即期匯率-履約價=$0.76-$0.82= -$0.06
-$0.06*50,000= -$3000
淨損益: -$3000+$500= -$2,500
Answer: -$2,500
3. 買一個賣權 long a put option
支付權利金 -$0.04*31,250= -$1,250
履約價-即期匯率=$1.80-$1.59= $0.21
$0.21*31,250=$6562.5
淨損益: $6562.5-$1,250= $5,312.5
Answer: $5,312.5
4. 賣賣權 short put options
收取權利金 $0.01 per unit
(1) if the spot rate is $0.72
$0.01+$0.72-$0.76= -$0.03
(2) if the spot rate is $0.73
$0.01+$0.73-$0.76= -$0.02
(3) if the spot rate is $0.74
$0.01+$0.74-$0.76= -$0.01
(4) if the spot rate is $0.75
$0.01+$0.75-$0.76= $0
(5) if the spot rate is $0.76
$0.01+$0.76-$0.76= $0.01
5. 買一個買權 long a call option
支付權利金 -$0.02*31,250= -$625
$1.46-$1.45=$0.01
$0.01*31,250=$312.5
淨損益: $312.5-$625= -$312.5
Answer: -$312.5
8. 買賣權 long put options
(1) if the spot rate is $0.76
-$0.02+$0.86-$0.76= $0.08
(2) if the spot rate is $0.79
-$0.02+$0.86-$0.79= $0.05
(3) if the spot rate is $0.84
-$0.02+$0.86-$0.84= $0
(4) if the spot rate is $0.87
-$0.02+Max{$0.86-$0.87 , $0} = -$0.02
(5) if the spot rate is $0.89
-$0.02+Max{$0.86-$0.89 , $0}= -$0.02
(6) if the spot rate is $0.91
-$0.02+Max{$0.86-$0.91 , $0}= -$0.02