it's about the MM taking the other side of the high prob leg (your long leg == MM short leg) at a price designed to make them a profit higher than the .35 you anticipated in risk on that leg.
Huh??it's about the MM taking the other side of the high prob leg (your long leg == MM short leg) at a price designed to make them a profit higher than the .35 you anticipated in risk on that leg.
you completely missed the point of legging out of the trade -- that makes the spread irrelevant.
Let's say that I'm making the market and take the other side of the trade, after the fill, I can immediately close that short leg (customer long leg) for .35 and lock a profit of 4.50.
What about the other leg?
Legs are being managed separate for profits, right, that was the assumption.