Notices Regulatory Notice 16-21SEC Approves Rule to Require Registration of Associated Persons Involved in the Design, Development or Significant Modification of Algorithmic Trading StrategiesMonday, June 06, 2016 Regulatory Notice 15-09Guidance on Effective Supervision and Control Practices for Firms Engaging in Algorithmic Trading StrategiesThursday, March 26, 2015 Regulatory Notice 15-06FINRA Requests Comment on a Proposal to Require Registration of Associated Persons Involved in the Design, Development or Significant Modification of Algorithmic Trading StrategiesThursday, March 19, 2015 Regulatory Notice 14-51FINRA Requests Comment on Proposed FINRA Rules Requiring the Identification of Non-Member Broker-Dealers in Order Audit Trail System (OATS) Reports and the Reporting of Additional Order Information by Alternative Trading Systems (ATS)Friday, November 14, 2014