Quote from rdemyan:
Thanks for the explanation, Mark.
I do not understand what curvature really means.
Just call it positive gamma. You want to be getting longer when the market rallies and shorter when it falls. IC and DD are negative gamma positions.
But now that you have indicated what you have done I can set up some theoretical positions in ToS and model the risk profile and look at the greeks to see what this all really means. I just needed something to help me get started. I should have been more clear that I didn't necessarily need the strikes just the general idea that you are buying more Feb calls than selling Jan calls.
Keep in mind that 11 x 10 spreads are not going to help much. I suggest a minimum ratio of 3:2. And 2:1 is better. Warning: do not do this with all positions. Just need some curvature to protect yourself if the short strike is breached. If you have the right position, you will not only be protected, but you will make extra money.