Subject to Rule 4.5.4, a Trading Member may deal in securities or futures contracts for 1 or more of the following:—
  (1) customers;
  (2) its proprietary accounts; and
  (3) proprietary accounts of its related corporations or Associated Corporations.
Amended on 3 April 20083 April 2008, 19 May 201419 May 2014 and 8 October 20188 October 2018.