Am uneducated thought here ,, in one of the top 20 lists Colombo...

Am uneducated thought here ,, in one of the top 20 lists Colombo posted one of our top 20 shareholders were missing , or from what I can remember they had split into 3 accounts , why would they do this ?? To buy and sell to themselves day in day out to suppress the sp ? Is this why a lot of the one share trades are cross trades ?? or marked as xt or cxxt ?
Just a conspiracy theory of mine which I’m sure has a few holes in there so happy to be corrected ,