Dest "bought 5 lots of" "231P fly or a 132C fly", "neutral to SPX 3130", so I assume for each lot, he bought 3 SPX 3130 puts, sold 1 lower strike puts, say 3110 or 3120, and sold 2 higher strike puts, say, 3150.
Alternatively, he could have bought 3 SPX 3130 calls, sold 2 higher strike calls, say 3150, and sold 1 lower strike calls, say, 3120 or 3110.
Am I correct @Dest?
I usually sell the body and buy the wings, but since Dest said he bought, I am assuming he bought the body and sell the wings for a debit.
I believe the edge is not in setting up these structures, it is in how one close/roll/convert in steps the different legs to finally flatten these structures that makes the profit.
I'm super dense. Where does 231P come from in your explanation?