<PAGE>
<PAGE>
                           UNITED STATES
                 SECURITIES AND EXCHANGE COMMISSION
                       WASHINGTON, DC 20549

                             FORM 10-Q/A


     (X)  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                   SECURITIES EXCHANGE ACT OF 1934

      For the quarterly period ended     SEPTEMBER 30, 1998
                                     -----------------------------------

                                OR

   ( )  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE
                  SECURITIES EXCHANGE ACT OF 1934

For the transition period from                    to
                               ------------------    -------------------

Commission file number                  0-26350
                       -------------------------------------------------

                         ALLEGIANT BANCORP, INC.
------------------------------------------------------------------------
        (Exact name of registrant as specified in its charter)

              MISSOURI                         43-1519382
----------------------------------  ------------------------------------
   (State or other jurisdiction     (I.R.S. Employer Identification No.)
        of incorporation or
           organization)

                           2122 KRATKY ROAD
                      ST. LOUIS, MISSOURI 63114
------------------------------------------------------------------------
               (Address of principal executive offices)
                              (Zip Code)

                            (314) 692-8200
------------------------------------------------------------------------
        (Registrant's telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange
Act of 1934 during the preceding 12 months (or for such shorter period
that the registrant was required to file such reports), and (2) has
been subject to such filing requirements for the past 90 days.
                                                     /x/ Yes  / / No

           Title of class of                Number of shares
              common stock          outstanding as of October 31, 1998
    -----------------------------   ----------------------------------
    Common stock, $0.01 par value              5,318,251


<PAGE>
<PAGE>
                             SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of
1934, the registrant has duly caused this report to be signed on its
behalf by the undersigned thereunto duly authorized.  The undersigned
signs this report in her dual responsibilities as a duly authorized
officer of the registrant and also as the registrant's Chief Financial
Officer.



                                  ALLEGIANT BANCORP, INC.
                                    (Registrant)


                                  By: /s/ Sandra L. Friedman
November 23, 1998                     ---------------------------
                                      Sandra L. Friedman,
                                      Senior Vice President and
                                      Chief Financial Officer



                                   20