I get asked often about my platform and what gives me an edge in trading. I think having an edge is something that puts you at least on a level playing field with the experts, in this case...the marketmaker. Option traders have difficulty seeing where the size is, who the buyer is and what is important in micro trades. Certainly having that information is sensitive, but quite valuable to those owning it.
Tag >> market maker
Did you see in the last 10/15 minutes of the normal trading day, they moved the SPY down from about 87.50 to right around 87? Well guess what, there was fairly heavy April SPY Open Interest at the 87 strike. It was basically the 2nd highest level of open interest near current levels (85 being higher).