Quote from taowave:
Let me ask you,what good is it to know how it will affect your position?? By the time it affects your position,its too late...If you are managing vol its one thing,but if you are trading directionally its much much different..
I dont believe they have a rich mental map of the Greeks..They do have a very thorough understanding of the markets they trade and the probabilities of success/failure and magnitude of the directional move..
If I gave you a probability distribution of likey price moves,dont you think you would intuitively have a feel for how much you should pay for an option???
Just asking the question out of interest matey, not looking for an argument.
But to answer your questions.
1/ I find it helps in my trading.
2/ Yes, but again, I would map that out in my head and have a sense of what my risks and rewards were Greek-wise.
But that's just me. If others don't, no skin off my nose.