No Participant or associated person may effect a transaction or carry an account for a Customer, whether a
Participant or non-Participant of NTX Options, without proper and adequate margin in accordance with this
Options 6D, Section 4 and Regulation T.
Adopted October 23, 2019 (SR-BX-2019-039).
The amount of margin required by this Options 6D, Section 4 shall be obtained as promptly as possible and in
any event within a reasonable time.
Adopted October 23, 2019 (SR-BX-2019-039).
(a) A Participant or associated person must be bound by the initial and maintenance margin requirements of
either the Cboe Exchange, Inc. ("CBOE") or the New York Stock Exchange ("NYSE") as the same may
be in effect from time to time.
(b) Such election shall be made in writing by a notice filed with NTX Regulation.
(c) Upon the filing of such election, a Participant or associated person shall be bound to comply with the
margin rules of the CBOE or the NYSE, as applicable, as though said rules were part of these Rules.
Adopted October 23, 2019 (SR-BX-2019-039); amended May 11, 2026 (SR-NasdaqTX-2026-024), operative Jun. 10, 2026.
Adopted October 23, 2019 (SR-BX-2019-039).
(a) The amount of margin prescribed by these Rules is the minimum which must be required initially and
subsequently maintained with respect to each account affected thereby: but nothing in these Rules shall be
construed to prevent a Participant or associated person from requiring margin in an amount greater than that
specified.
(b) NTX Options may at any time impose higher margin requirements with respect to such positions when it deems
such higher margin requirements to be advisable.
Adopted October 23, 2019 (SR-BX-2019-039).
Adopted October 23, 2019 (SR-BX-2019-039).
Adopted January 29, 2020 (SR-BX-2020-001).