A call option with an exercise price of $50 expires in six months, has a stock price of $54, and has a standard deviation of 80 percent. The risk-free rate is 9.2 percent per year annually compounded. Calculate the value of d1.and d2
Calculate the value of d1
0.3 |
||
0.7214 |
||
-0.7214 |
||
0.4967 |
calculate the value of d2
+0.0690
-0.0690
+0.5657
-0.5657
Part A:
Step 1:
Ln (S/ X)
= Ln ( 54 / 50 )
= Ln ( 1.08)
= 0.0770
Step 2 :
d1 =[ Ln ( S/X) + [ (SD^2 / 2) + Rf ] * t ] ] / [ SD * SQRT (Time ) ]
d1 =[ 0.0770 + [ (0.8^2 / 2) + 0.092 ] * (6/12) ] ] / [ 0.8 * SQRT (6/12 ) ]
= [ 0.0770 + [ (0.64 / 2) + 0.092 ] * (6/12) ] ] / [ 0.8 * SQRT (0.5 ) ]
= [ 0.0770 + [ 0.32 + 0.092 ] * (6/12) ] ] / [ 0.8 * 0.7071 ]
= [ 0.0770 + [ 0.412 ] * (6/12) ] ] / [ 0.8 * 0.7071 ]
= [ 0.0770 + 0.206 ] / [ 0.8 * 0.7071 ]
= 0.9131 / 0.5657
= 1.6142
Part B:
d2 = d1 - [ SD * SQRT [ TIme ]
= 1.6142 - 0.5657
= 1.0485
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