      Orders originating off the floor of the Exchange reach the post andpanel location where the stock is traded either electronically through theNYSE SuperDot system or is walked to the post by floor brokers. A recentstudy found that about 75 percent of orders reached the specialists viaSuperDot. These orders, however, accounted for only 28 percent of executedNYSE share volume.6 Floor brokers, therefore, tend to represent larger,more diffi-cult-to-execute orders.