very low confidence I wanted to say "yes." -- but from a cost-type pow (it's cheaper to transact off-exchanges, clearing trades internally in say a hedge fund or large bank). 

_Probably_ not what you're getting at. Educate me??

Easy to find out: Does your understanding imply that a person inside the Darkpool could make 💸💸 by simply buying/selling from the pool and arbitraging to the open market?

if yes, your understanding is probably incorrect

if no, at least the broad strokes are correct

kilianbuhn

econ

Dark Pools, Stock Trading, and Financial Markets (Bloomberg, Matt Levine)

denlillaapan

I'm _definitely_ in that 95% crowd. 

Have no clue—outside of Michael Lewis' _Flash Boys_ that I read, much belatedly, a few years 