EXHIBIT 4.6


                                  HSBC USA INC.
                                          Issuer


                                       TO


                              BANKERS TRUST COMPANY
                                          Trustee

                              ---------------------

                             SUPPLEMENTAL INDENTURE

                          Dated as of February 25, 2000

                                       to

                                    INDENTURE

                          Dated as of October 24, 1996

                              ---------------------

                          SUBORDINATED DEBT SECURITIES


<PAGE>


         THIS SUPPLEMENTAL INDENTURE (the "Supplemental Indenture"), dated as of
February 25, 2000, between HSBC USA INC., a Maryland corporation previously
named Republic New York Corporation (hereinafter, the "Successor"), having its
principal office at 452 Fifth Avenue, New York, New York 10018 and BANKERS TRUST
COMPANY, a New York banking corporation, as trustee (hereinafter called the
"Trustee"), under the Indenture (as defined below), having its Corporate Trust
Office at 4 Albany Street, 4th Floor, New York, New York 10006. Capitalized
terms used but not defined herein shall have the meanings assigned to such terms
in the Indenture.

         WHEREAS, HSBC Americas, Inc. (the "Company") and the Trustee previously
duly executed, and the Company duly delivered to the Trustee, an Indenture for
Subordinated Debt Securities, dated as of October 24, 1996, as supplemented by a
Supplemental Indenture with respect thereto, dated as of December 12, 1996, and
a Supplemental Indenture with respect thereto, dated as of March 1, 1999
(collectively, the "Indenture");

         WHEREAS, the Company changed its name to HSBC USA Inc. by a Certificate
of Amendment of Restated Certificate of Incorporation filed with the Secretary
of State of the State of Delaware on May 27, 1999;

         WHEREAS, effective at 12:15 p.m., New York City Time on December 31,
1999 (the "Effective Time"), the Company merged with and into the Successor in
accordance with the General Corporation Law of the State of Maryland and the
General Corporation Law of the State of Delaware;

         WHEREAS, the Successor changed its name to HSBC USA Inc. by Articles of
Amendment filed with the State Department of Assessments and Taxation of the
State of Maryland on January 3, 2000;

         WHEREAS, pursuant to Section 1101(1) of the Indenture, this
Supplemental Indenture may be entered into without the consent of the Holders;

         WHEREAS, the Board of Directors of the Successor has authorized the
execution of this Supplemental Indenture and its delivery to the Trustee;

         WHEREAS, the Successor has delivered an Opinion of Counsel to the
Trustee pursuant to Section 1103 of the Indenture; and

         WHEREAS, all other actions necessary to make this Supplemental
Indenture a legal, valid and binding obligation of the parties hereto in
accordance with its terms and the terms of the Indenture have been performed;

         NOW, THEREFORE, in consideration of the promises contained herein and
for other good and valuable consideration, the receipt and sufficiency of which
is hereby acknowledged, the Successor and the Trustee hereby mutually covenant
and agree for the equal and proportionate benefit of all Holders of the Debt
Securities as follows:


<PAGE>


                                    ARTICLE I
                                   ASSUMPTION

         SECTION 1.1. From and after the Effective Time, the Successor hereby
expressly assumes the due and punctual payment of the principal of (and premium,
if any) and the interest on all the Debt Securities and the performance of every
covenant of the Indenture on the part of the Company to be performed or
observed.

                                   ARTICLE II
                                  MISCELLANEOUS

         SECTION 2.1. Upon execution of this Supplemental Indenture, the
Indenture shall be deemed to be modified as herein provided, but except as
expressly amended hereby, the Indenture shall continue in full force and effect.

         SECTION 2.2. Upon execution, this Supplemental Indenture shall form a
part of the Indenture and the Supplemental Indenture and the Indenture shall be
read, taken and construed as one and the same instrument for all purposes.

         SECTION 2.3. Debt Securities of any series authenticated and delivered
pursuant to the Indenture after the execution and delivery of this Supplemental
Indenture shall bear a notation that the Indenture has been supplemented by this
Supplemental Indenture. Any Global Security issued after the execution and
delivery of this Supplemental Indenture shall be in the form attached as Exhibit
A hereto.

         SECTION 2.4. THIS SUPPLEMENTAL INDENTURE SHALL BE DEEMED TO BE A
CONTRACT MADE AND TO BE PERFORMED ENTIRELY IN THE STATE OF NEW YORK, AND FOR ALL
PURPOSES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE
STATE OF NEW YORK WITHOUT REGARD TO THE CONFLICT OF LAWS PRINCIPLES OF THE STATE
OF NEW YORK.

         SECTION 2.5. This Supplemental Indenture may be executed in any number
of counterparts, each of which so executed shall be deemed to be an original,
but all of which together shall be deemed to constitute but one and the same
instrument.



<PAGE>


         IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be
duly executed, and their respective corporate seals to be hereunto affixed and
attested, all as of the day and year first above written.

                                          HSBC USA INC.

                                          By: /s/ Robert M. Butcher
                                             ----------------------
                                          Name:  Robert M. Butcher
                                          Title: Senior Executive Vice President
                                                 and Chief Financial Officer

Attest:

/s/ Philip S. Toohey
----------------------
Name: Philip S. Toohey
Title: Senior Executive
       Vice President
       And Secretary

SEAL

                                          BANKERS TRUST COMPANY, as Trustee

                                          By: /s/ Tara Netherton
                                             ----------------------
                                          Name: Tara Netherton
                                          Title: Associate

Attest:

/s/ Vincent Chordey
----------------------
Name: Vincent Chordey
Title: Assistant Vice
       President

SEAL


<PAGE>


STATE OF NEW YORK,         )
COUNTY OF Erie    )        ss.:

                  On the 25th day of February, 2000, before me personally came
Robert M. Butcher, to me known, who, being by me duly sworn, did depose and say
that he is the Senior Executive Vice President of HSBC USA Inc., one of the
corporations described in and which executed the foregoing instrument; that he
knows the seal of said corporation; that the seal affixed to said instrument is
such corporate seal; that is was so affixed by authority of the Board of
Directors of said corporation, and that he signed his name thereto by like
authority.


                                                             /s/ Vicki L. Barbus
                                                             -------------------
                                                             Notary Public


STATE OF NEW YORK,         )
COUNTY OF Kings   )        ss.:

                  On the 10th day of February, 2000, before me personally came
Tara Netherton, to me known, who, being by me duly sworn, did depose and say
that he is the Associate of Bankers Trust Company, one of the corporations
described in and which executed the foregoing instrument; that he knows the seal
of said corporation; that the seal affixed to said instrument is such corporate
seal; that is was so affixed by authority of the Board of Directors of said
corporation, and that he signed his name thereto by like authority.


                                                              /s/ Boris Treyger
                                                              -----------------
                                                              Notary Public


<PAGE>


                                                                       EXHIBIT A

                  UNLESS OR UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR THE
INDIVIDUAL NOTES REPRESENTED HEREBY, THIS GLOBAL CERTIFICATE MAY NOT BE
TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY
OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE
DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR
A NOMINEE OF SUCH SUCCESSOR DEPOSITARY.

                  UNLESS THIS GLOBAL CERTIFICATE IS PRESENTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITARY TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF
TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE
NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITARY (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO
SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITARY), ANY TRANSFER, PLEDGE OR OTHER USE THEREOF FOR VALUE OR OTHERWISE BY
OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE &
CO., HAS AN INTEREST HEREIN.

                  THE NOTES ARE NOT SAVINGS ACCOUNTS, DEPOSITS OR OTHER
OBLIGATIONS OF ANY BANK OR NONBANK SUBSIDIARY OF THE CORPORATION AND ARE NOT
INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, BANK INSURANCE FUND OR ANY
OTHER GOVERNMENT AGENCY.

                                $
                                 ----------------

                                  HSBC USA INC.

                            % SUBORDINATED NOTES DUE

                                 GLOBAL SECURITY

CUSIP NO.:                                                      PRINCIPAL AMOUNT
                                                                     REPRESENTED


No.                                                         $
                                                             -------------------


                  HSBC USA INC., a corporation duly organized and existing under
the laws of the State of Maryland (the "Company", which term includes any
successor corporation under the Indenture hereinafter referred to), for value
received, hereby promises to pay to _____________, as the nominee
of_______________________ (the "Depositary"), or registered assigns, the
principal sum of______________________ ($_____________________) on
_____________, ______ ("Maturity"), and to pay interest thereon semiannually in
arrears on each __________ and ____________ (each, an "Interest Payment Date"),
beginning ____________, and at maturity, from ____________, or from the most
recent Interest Payment Date to which interest has been paid or duly provided
for, at the rate of _____% per annum, until the principal hereof is paid or made
available for payment.

                  This security is one of the global certificates issued on the
date hereof, which, in the aggregate, represent 100% of the principal face
amount of the Company's _____% Subordinated Notes due ____________ (the
"Notes"), and is one of the duly authorized issues of securities of the Company
(the "Debt Securities"), issued or to be issued in one or more series under an
indenture, dated as of October 24, 1996, between HSBC Americas, Inc., a
corporation organized under the laws of the State of Delaware (as predecessor to
the Company, the "Predecessor"), and Bankers Trust Company, as trustee (the
"Trustee", which term includes any successor Trustee under the Indenture), to
which indenture and all indentures supplemental thereto, including the
Supplemental Indenture between the Predecessor and the Trustee, dated as of
December 12, 1996, the Supplemental Indenture between the Predecessor and the
Trustee, dated as of March 1, 1999 and the Supplemental Indenture between the
Company and the Trustee, dated as of February 25, 2000 (such indenture as so
supplemented being hereinafter referred to as the "Indenture"), reference is
hereby made for a statement of the respective rights, limitations of rights,
duties and immunities thereunder of the Company, the Trustee and each of the
Holders of the Debt Securities and of the terms upon which the Debt Securities
are, and are to be, authenticated and delivered.

                  The interest payable hereunder, and punctually paid or duly
provided for, on any Interest Payment Date will be paid to the Person in whose
name this Debt Security, or one or more Predecessor Securities, is registered at
the close of business on the fifteenth day prior to each Interest Payment Date
(each a "Regular Record Date"). "Business Day" when used with respect to any
Place of Payment specified pursuant to Section 301 of the Indenture means any
day that is not a Saturday, a Sunday or a day on which banking institutions or
trust companies in such Place of Payment are authorized or obligated by law or
executive order to close. Any such interest not so punctually paid or duly
provided for shall forthwith cease to be payable to the registered Holder on
such Regular Record Date by virtue of such Person having been such Holder, and
may either be paid to the Person in whose name this Note (or one or more
Predecessor Securities) is registered at the close of business on a Special
Record Date to be fixed by the Trustee in the manner provided for in Section 307
of the Indenture or be paid in any other lawful manner not inconsistent with the
requirements of any securities exchange on which the Notes may be listed, and
upon such notice as may be required by such exchange, if, after notice given by
the Company to the Trustee of the proposed payment pursuant to this clause, such
manner of payment shall be deemed practicable by the Trustee.

                  Payment of the principal of and interest on this Note will be
made by the Company to the Paying Agent, and if such payments are made by the
Company, the Paying Agent in turn will make such payments to the Depositary.

                  Interest on the Notes will be computed on the basis of a
360-day year of twelve 30-day months. If an Interest Payment Date falls on a day
that is not a Business Day, the interest payment to be made on such Interest
Payment Date will be made on the next succeeding Business Day with the same
force and effect as if made on such Interest Payment Date, and no additional
interest will accrue as a result of such delayed payment.

                  The Notes are not subject to redemption prior to maturity.

                  The indebtedness of the Company evidenced by the Notes,
including the principal thereof and interest thereon, is to the extent and in
the manner set forth in the Indenture, subordinate and junior in right of
payment to the Company's obligations to holders of Senior Indebtedness of the
Company, and each Holder of the Notes, by the acceptance thereof, agrees to and
shall be bound by such provisions of the Indenture.

                  If an Event of Default with respect to the Notes shall have
occurred and be continuing, the principal of all the Notes may be declared due
and payable in the manner and with the effect provided in the Indenture. There
is no right of acceleration of the payment of principal of the Notes upon a
default in the payment of interest on the Notes or in the performance of any
covenant of the Company in the Indenture or in the Notes.

                  If the Company does not pay any installment of interest on the
Notes on the applicable Interest Payment Date or all or any part of the
principal thereof at Maturity, the obligation to make such payment and such
Interest Payment Date or Maturity, as the case may be, shall be deferred until
(i) in the case of a payment of interest, the date upon which a dividend is paid
on any class of share capital of the Company and (ii) in the case of a payment
of principal, the first Business Day after the date that falls six months after
the original Maturity. Each payment so deferred will accrue interest at the rate
per annum set forth in the first paragraph hereof. Any payment so deferred shall
not be treated as due for any purpose. Any such deferral shall take place only
once with respect to any payment of interest or principal.

                  The Indenture permits, with certain exceptions as therein
provided, the amendment thereof and the modification of the rights and
obligations of the Company and the rights of the Holders of the Debt Securities
of each series to be affected under the Indenture by the Company and the Trustee
with the consent of the Holders of not less than 66 2/3 % in aggregate principal
amount of the Debt Securities at the time Outstanding of each series to be
affected. The Indenture also contains provisions permitting the Holders of
specified percentages in aggregate principal amount of the Debt Securities of
any series at the time Outstanding, on behalf of the Holders of all the Debt
Securities of such series, to waive, with respect to the Debt Securities of such
series, compliance by the Company with certain provisions of the Indenture and
certain past defaults under the Indenture and their consequences. Any such
consent or waiver by the Holder of this Note shall be conclusive and binding
upon such Holder and upon all future Holders of this Note and of any Note issued
upon registration of transfer hereof or in exchange for or in lieu hereof;
whether or not notation of such consent or waiver is made upon this Note.

                  Holders of the Notes may not enforce their rights pursuant to
the Indenture or the Notes except as provided in the Indenture. No reference
herein to the Indenture and no provision of this Note or of the Indenture shall
alter or impair the obligation of the Company, which is absolute and
unconditional, to pay the principal of (and premium, if any) and interest on
this Note at the times, place and rate, and in the coin or currency, herein
prescribed.

                  The Debt Securities of this series are issuable only in
registered form without coupons in denominations of $1,000 and integral
multiples thereof.

                  As provided in the Indenture, and subject to certain
limitations therein set forth, Notes are exchangeable for a like aggregate
principal amount of Notes of any authorized denominations and of like tenor, as
requested by the Holder surrendering the same.

                  No service charge shall be made for any registration of
transfer or exchange, but the Company may require payment of a sum sufficient to
cover any tax or other governmental charge payable in connection therewith and
any other expenses provided for in the Indenture in connection with the issuance
of any new Note in the event of the destruction, mutilation, loss, or theft of
any Note.

                  Prior to the due presentment of this Note for registration of
transfer, the Company, the Trustee and any agent of the Company or the Trustee
may treat the Person in whose name this Note is registered as the owner hereof
for all purposes, whether or not this Note be overdue, and neither the Company,
the Trustee nor any such agent shall be affected by notice to the contrary.

                  Unless the certificate of authentication hereon has been duly
executed by the Trustee by manual signature of one of its authorized officers,
this Note shall not be entitled to any benefit under the Indenture or be valid
or obligatory for any purposes.

                  All terms used in this Note which are not defined herein shall
have the meanings assigned to them in the Indenture.

                  This Note shall be construed in accordance with and governed
by the laws of the State of New York.


<PAGE>


                  IN WITNESS WHEREOF, the Company has caused this instrument to
be duly executed under its corporate seal.

Dated:

                                                          HSBC USA INC.


                                                        By:
                                                           -------------------
                                                           Name:
                                                           Title:


Corporate Seal
Attest:


By:
   -------------------
   Name:
   Title:



TRUSTEE'S CERTIFICATE OF AUTHENTICATION
  This is one of the Debt Securities of the
  series designated herein issued
  under the within-mentioned Indenture.



BANKERS TRUST COMPANY,
as Trustee



By:
   -------------------
   Authorized Officer