Quote from JoshDance:
While I'm bored..
Do any of you watch intraday volume on SPY to get a different picture from what ES is doing?
I am considering monitoring all 500 SP symbols and doing a minute-by-minute summation of their volume to get an accurate representation of true volume. I'm curious as to how this would compare with the SPY volume.
you could watch 1 minute charts on spy, pay attention when 1 million shares are printed in a minute.