Quote from cohenmichaela:
1. This is an absurd question. It's equivelant to asking why throwing money away would matter to your profitability.
2. For the same reason as the answer to your first question. You're paying the B/A spread twice thus giving money to the MMs for no good reason.
You're instincts seem completely contrary to the goals of any trader, to make money and not give it away.
1. i don't think it's an absurd question, and if it were, you would not have responded, nor was this question directed at you. i don't believe i said commissions didn't matter. and i disagree. commissions are not throwing money away, and they marginally affect my profitablility. btw, equivalent is spelled with an a, not an e.
2. true, i am paying twice, but without it, my profitability would be lower, or in a loss position, so i'm actually making more this way than by not taking the position and just going long or short, and i'm limiting my downside risk.
i think you're thinking of the position as one trade, one pnl, and i don't, because they evolve and change as time moves forward. if this is about yesterday's question, i must not have answered it the way you wanted, must have pissed you off or something.
there are few, if any, market makers in a computerised markets. i'm not giving anything away to anyone. that's the most absurd comment i've ever read in my career as a trader.
actually, it's funny you say my goal is to give it away...you're the first one to guess correctly.
the bottom line is i am net profitable.
period.
who are you supposed to be, anyway?