Worth the read - especially comments about data costs. https://www.sec.gov/news/speech/clayton-redfearn-equity-market-structure-2019
Market data costs are a big deal. I would like to see the SEC and FINRA be the one to determine the definition of what a professional user is and not the NYSE/NASDAQ. I'd also like them to provide more exemptions for those high non-display fees. A sole member LLC with $50,000 and an open API should not be charged the same as a large prop firm with a hosted solution getting raw market data. The NYSE should not have the right to search social media for ones description of their work or use your work email address as a reason to charge more. The SIP feeds have a monopoly and think they can proceed as they wish without consequence. The result is a lack of access for smaller players when they should be encouraging access. ajacobson-Thank you for the post. Bob