See here:
Summary of the SEC’s Proposed Changes to the National Market System
highlights:
* Create Multiple Regional SIPs
* Eliminate the Unified (centralized) NBBO
* Expand “Core” Data to include Full Depth of Book, Auction Data (nearly all exchange data)
* Create “Round Lots” of Fewer Than 100 Shares
* Require Order Display Without Protection
* Expand the Authority of the NMS Plans to Set Prices for Exchange Data
* Change the Voting Structure of Equity NMS Plans
This thread is for comments and discussion
Summary of the SEC’s Proposed Changes to the National Market System
highlights:
* Create Multiple Regional SIPs
* Eliminate the Unified (centralized) NBBO
* Expand “Core” Data to include Full Depth of Book, Auction Data (nearly all exchange data)
* Create “Round Lots” of Fewer Than 100 Shares
* Require Order Display Without Protection
* Expand the Authority of the NMS Plans to Set Prices for Exchange Data
* Change the Voting Structure of Equity NMS Plans
This thread is for comments and discussion