Hi: I am new to to ES day trading. I was trying out scalping with an ask at the best ask price. My order got filled and then less than 0.05 seconds later(I logged price actions on my computer), the ES bid, and ask rose by 0.75 points. And less than 0.1 seconds later, the SP bid and ask also rose. This leads me to believe that there is something else out there that is a leading indicator. Thanks.