Risk-neutral probabilitiesÄ 210
We can rewrite (*) and (**) aswhere E’(.) denotes the expected value under p’ and q’.
Derivative securities: Options - Binomial asset pricing model
()
(
)
(
)
() ()
()
,
~ 1
1
~
~
&
~^1
1
~
~
1
1
1
0
1
1
1
0
r
V
E
r
T V q H V p V
r
S
E
r
T S q H S p S
=
=
=
=