Waggie, could you explain your earlier comment about not using volume?
When I was on the floor (ags), it made a huge difference whether, say, ADM was bid for 1000, or whether mainly the locals were bid for 50 here, 20 there, 35, somewhere else.
Also, the locals were famous for running up the price on one lots to draw out paper from someone sitting behind a screen who didn't know how much real buying (in this case none) was behind the move.
One of the challenges I've faced is trying to figure out how to trade off the floor without this kind of info. Maybe in a big, liquid market like the S&P this matters less?
Thanks for any comments!