Quote from Bernard111:
Out of curiosity, how do they front run your orders om CME NYMEX electronically (Globex)?
Quote from BPtrader:
electronically, some computer program "sees" the order and takes an action before it, that moves the price by a penny or a fraction of a penny.
I used to think I got a fair fill at the bid or ask price (depending whether I was short or long), but they can actually front-run you in a sub-penny way. In other words, you don't even notice it at the bid/ask prices.