Fitness function ?

[Alvin Lee]

Dear all ;)

my name is alvin, i'm a student of Widya Kartika University
Surabaya-Indonesia
for my theses / final assignment i choose the GAs for predicting the
movement of stock. i used the technical analysis(with moving average) to
predict it, so i used the historical data like closing, high, and low weekly
price.

now i have difficulty to find the right objective function / fitness
function for this problem. i need help how to build it or the steps or any
informations 'bout it.

thank you very much for your attentions
God bless you

Alvin