You assume so because you have trouble with basic reading comprehension.
From post 54 My words:"Oh you mean they do it all for free? Hahahaha Tell me how they make no money on trading derivatives they just do so from the kindness of their hearts.
That's silly, of course banks usually make money when trading derivatives.
You assume so because you have trouble with basic reading comprehension.
Your confusion comes thru loud and clear, no assumption involved.