Risk-neutral probabilitiesÄ 210We can rewrite (*) and (**) aswhere E’(.) denotes the expected value under p’ and q’.
Derivative securities: Options - Binomial asset pricing model
()
(
)
(
)
() ()
()
,
~ 1
1
~
~
&
~^1
1
~
~
11101110r
V
Er
T V q H V p V
r
S
Er
T S q H S p S
=
=
=
=