Quote from rtharp:
In and Long you get this question answered?
Direct Plus
Auto Ex
NX
are all the same thing
They refer to a route on the NYSE that is the fastest execution there is.
Limit of 1099 shares
limited to every 30 seconds in one direction
can't split up orders to keep under limit
It's turned off if bid or offer is only showing 100 shares
Hope that helps
Robert T