Good Evening,
I've seen a few posts from 2015 and 2016 requesting access to real-time Level 2 data for use in algorithms. Now that we're near the end of 2017, any update on this?
Having used NASDAQ BookViewer previously, something as simple as a datafeed from my personal BookViewer subscription would be sufficient in my opinion, as long as the algorithm could input the ticker to research, "read" the orders being displayed in real-time, and process decisions based on how I code it to react.