> Detecting the presence of large trades about to go through or going through and capitalizing on the price movements they cause Large trades move the market,

> Detecting the presence of large trades about to go through or going through and capitalizing on the price movements they cause Large trades move the market, full stop. That's a feature, not a bug. Moving a lot of size changes the market's estimate of the value of whatever you're moving. Splitting up large orders into smaller pieces is attempting to hide that information, why should that be a privileged operation?