Quote from mksummny:
if you are trading listed then you need to read this carefully:
Securities listed on the NYSE, Amex, or a regional exchange (excluding ETFs)
Liquidity accessing fee FREE
Liquidity provider credit FREE
Routing between books, to ECNs or ITS destinations FREE
Routing to DOT with orders that attempt to execute in the Brut, INET or NMC books FREE
Routing to DOT with orders that do not attempt to execute in the Brut, INET or NMC books (per share executed) $0.0004
*********Any limit order delivered by NASDAQâs Brut Facility to the NYSE using the NYSEâs proprietary order delivery system if such an order is not an on-close order, is not executed in the opening, and remains at the NYSE for more than 5 minutes (per share executed) $0.009