Order Instituting Proceedings To Determine Whether To Approve or Disapprove a Proposed Rule Change, as Modified by Amendments No. 1 and 2, Allowing the Exchange To Trade Pursuant to Unlisted Trading Privileges Any NMS Stock Listed on Another National Securities Exchange; Establishing Listing and Trading Requirements for Exchange Traded Products; and Adopting New Equity Trading Rules Relating to Trading Halts of Securities Traded Pursuant to UTP on the Pillar Platform