Quote from polpolik:
Much like risk analysis, you have to multiply the probability of event happening to the payoff and compare based on the result.
Actually, payoff = probability*(reward/risk)
Typically, the higest payoffs involve the ATM or slightly ITM strikes. Calculate probabilities thusly:
stddev=(exp(future price/current price))/(volatility*sqrt(# days to expiry/252))
then in a spreadsheet use =normsdist(stddev) to get probability
Don Fishback was big into this with his ODDS software and claims of 90% winners several years ago. I wonder what he is doing these days?
