https://tabbforum.com/opinions/from-beginning-to-n-what-the-history-of-regulations-from-reg-ats-to-form-ats-n-tells-us-about-the-future-of-dark-pools/

Craig Viani Liquidnet – “Based on the intensification of regulatory scrutiny in the past few years, it’s probable that the number of US dark venues will remain stagnant for a period of time. Additionally, with future rule changes such as proposed amendments to Rule 605 requiring greater granular statistical measures of execution quality¹⁷, we believe that it’s likely the competitive landscape will remain in a narrow band for the coming years.”