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(lu) #1
Present value for a FPƒ 133

Suppose you want to close out a FP at time

t, t0<t<T.

ƒ

At time

t

: close out a FP by adding a FS for the same

T

ƒ

At time

T:

ƒ

Payoff from FP:

ST

-F

t0,T

You will buy one unit of the underlying and pay

Ft0,T

for it.

ƒ

Payoff from FS:

Ft,T

-S

T

You will sell one unit of

the underlying and receive

Ft,T

for it.

ƒ

Sum of the payoffs:

ST

-F

t0,T

+F

t,T

-S

=FT

t,T

-F

t0,T

ƒ

Discounting with the risk-free rate

gives the present value for a FP:

ƒ

Note:

(

)

rT

T
t

Tt

t

e

F

F

PV



=

, 0

,

()

T T t T T t T T T

rT

T
t

T
t

t

CF

F

S

F

F

PV

e

F

F

PV

=


=


=

=


=


, 0

, 0

,

, 0

, 0

0

0

Derivative securities: Forwards - Introduction

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