Is it better to leg into a credit spread OR enter the order as a credit spread if the comission is the same? Yesterday, I tried to get an spx credit spread. sell 10 spx 1440 calls bid/ask 5.4 / 6.2 buy 10 spx 1450 calls bid/ask 2.95 / 3.4 If we take the middle value, I would get a credit worth 2.6. I entered the order for 2.6. These b/a spreads did not change so much for a few hours and I found myself lowering the credit as time went by because my order wasn't filled. I finally had to lower it to 2.05, 5 cents away from market and still no fill. What did I do wrong?