Ok Thanks. The presence of the specialist explains the little edge. But if you find a valid strategy on NASDAQ opening prints, is it possible to obtain those prints? Is there a real auction for NASDAQ? I know I can check on the exchange website but I was hoping some people would have tried it as well and relate their experience.
What about ARCA?
NASDAQ auction happens without delay, unlike NYSE. And the opening print you see with websites/brokers is the one you'd get 99.99% of the time. Other than that, there aren't significant differences.