Hi, What kind of position sizing methods do (time) premium sellers here use? By premium sellers I mean you trade things like credit spreads, iron condors, calendars, etc. How long have you used this method, and how successful has it been for your trading? Two methods I've come across that may be applicable to premium sellers, are the fixed risk method, and the Kelly Formula. I've also read the book on Fixed Ratio and tried to model it on my past trades, but I think it's too risky, as I think it makes me trade far too many contracts. I'm currently leaning towards risking a fixed % of total portfolio per trade. Let's say I risk 3% per trade, but I have 3-4 possible trades I could take, what is a reasonable cap on market exposure at any one time, assuming my trades are diversified into non-correlated instruments? Althought the instruments are not highly correlated, I'm aware that doesn't mean they can't all take a loss at the same time. So for this reason, how much of your capital will you put at risk, at any one time? Lastly, besides Van Tharp's book, is there any other *good* resource that covers money management, aka position sizing, in detail and at length? Thanks.