Quote from schizo:
Not necessarily. Of course, you can't entirely rule out the human factor but you CAN enter trades without hesitating and you CAN place hard stops at the time of your entry. It just takes many years of experience.
But what makes you think ATS will have a better result?
This is true and I rarely hesitate anymore and I always place hard stops immediately.
But trading with an edge and making a decent profit requires you to take all valid setups. It's the probability factor that places the odds in your favor. One of my biggest problems to overcome (still) is picking and choosing from among valid setups. For example, I trade only 4 stocks. Sometimes they all set up at once based on overall market action. If I were to trade them all at once, 2 of them might move 2.00 in my favor, 1 of them might move 1.00 in my favor and 1 of them might move .15 cents in my favor. But instead of taking them all as valid setups I pick one of them to trade. It happens to be the .15 winner and I end up stopped out near break even, while watching the others run without me.
With an ATS, it would put on 4 trades and make a decent profit.
I just finished Trading in the Zone and a very good analogy is presented. Why do casinos make money? Because they have an edge (overall odds in their favor). But the edge only works in their favor because they take the other side of every game played. They don't pick and choose.
ADD: This is a human factor problem. I'm sure it's overcome all the time, as the many highly successful discretionary traders can affirm.

