Quote from ogarbitrage:
Cut losses immediately, let winners run.
It's a naturally tendency to take your profits too soon and not cover your losses quickly enough (loss aversion). But if you never have an edge to begin with, this principle is irrelevant. ES are basically the most liquid future there is, and I sincerely doubt the OP has a leg up on the 100s of algos out there he is competing with.
Try a little experiment. Buy 10 ES at the market, regardless of where it is. Offer 10 ES 5 bucks higher. 90% of the time, you will get filled that day, making at tidy profit. 10% of the time you won't, and will lose big. Such is the nature of scalping futures. It has nothing to do with your view of the markets.
