You wrote exactly what is written between the line of my last post.

It is quite evident that ANON (001) switches stocks from one account to another and control SP on low volume days with lot of 100 shares transaction

JITNEY(099) switches stocks from one account to another and control SP on low volume days with bigger transaction than ANON

Also, as you just said: two or more brokers will rotate small lot trades to control SP

Lot of similarity with you, my average is below 1,75$ now, thanks to these.