Amscot stockbroking enables bulk trades on the same stock
"Trading on this fee structure is tailored specifically for active and very active clients.
Bulking refers to multiple trades in the same stock on any one day, all being aggregated to the one confirmation note. Any number of orders can be entered any number of times during the day, with only two notes being produced (one Buy and one Sell) and the brokerage charged based on the total value of each note.
Confirmation notes are issued at the end of each trading day."