Gen1 vs Gen3 delays


I saw in a closed form thread between Sergey Groshunov (Stock’s fundementals) and yourself, where you inferred that Gen1 AutoTrade subscribers are at a disadvantage as far as obtaining comparable fills that a Gen3 subscriber might expect. You lead one to believe that Gen1 endorsers have delays in fills that Gen3 participants do not, and thus, this contributes to data peculiarity. Would you explain in laymen’s terms what all of this means? I have used both Gen1 and Gen3 platforms and have found advantages and drawbacks to both.