Does anybody know of a systematic approach to optimally scalp gamma when long a straddle? Say I buy an ATM call and put ( straddle) on stock XYZ. My goal is to trade the stock in a delta neutral way to take advantage of the long gamma and cover the daily time decay at a minimum. Are there any simulation approaches that someone could run on XYZ , that would provide some guidance as to the most desirable increment on each side of the stock price to go long and short? It seems to me that taking into account the average true daily range and beta of the stock â variables that are not taken into account when options are priced using B-S â there should be some optimal range for scalping. I realize that the actual price history of the stock going forward is not known but may be there is something better than totally discretionary.