I'm looking at AKAM, it has about 300 lots lit volume on the NBBO at any one time.
What's the average amount of hidden volume as a multiple of lit volume? 0.5? 1.5?
What's the average amount of hidden volume as a multiple of lit volume? 0.5? 1.5?

Has there been an academic study done on this? I'm sure it's been done I just can't find it