Can someone explain the logic of two brokerage sources(likely one individual) doing 500 and 1000 share transactions every minute or two. As soon as the ask gets used up they refill it and continue on.

All that really changes is the # of transactions but what would be the likely goal of whoever perpetuates this.

I get the point of last minute upticks or downticks because they influence the next days opening price but unless I am overlooking something obvious I just don't get this 500 and 1000 ad infinitum thing.

Thanks for any explanation tendered.

Onward and Upward