UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 8-K


                 CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D)
                     OF THE SECURITIES EXCHANGE ACT OF 1934


       Date of Report (Date of Earliest Event Reported): December 26, 2001


                         WINTRUST FINANCIAL CORPORATION
             (Exact Name of Registrant as Specified in its Charter)


                         Commission File Number 0-21923



                 Illinois                                        36-3873352
- ----------------------------------------------              --------------------
(State or other Jurisdiction of Incorporation)              (I.R.S. Employer
                                                             Identification No.)



                               727 North Bank Lane
                           Lake Forest, Illinois 60045
             -------------------------------------------------------
                    (Address of Principal Executive Offices)


                                 (847) 615-4096
      ---------------------------------------------------------------------
              (Registrant's Telephone Number, Including Area Code)







ITEM 5.  OTHER EVENTS AND REGULATION FD DISCLOSURE

On December 26, 2001, Wintrust Financial Corporation  ("Wintrust") announced the
signing of an  agreement  to purchase  100% of the  ownership  interest of Wayne
Hummer   Investments  LLC  (including  its  wholly-owned   subsidiary,   Focused
Investments LLC,) and Wayne Hummer Management Company (collectively,  the "Wayne
Hummer Companies").  Wayne Hummer Investments LLC is a registered  broker/dealer
and  investment  services firm that provides a full range of private  client and
brokerage  services to clients  located  primarily in the Midwest.  Wayne Hummer
Management is a registered investment adviser,  providing services to individual
accounts as well as four proprietary mutual funds managed by the firm. The Wayne
Hummer  Companies are based in Chicago,  Illinois and have over seventy years of
investment  experience.  The  acquisition  of the Wayne  Hummer  Companies  will
augment and diversify  Wintrust's revenue stream by adding brokerage services to
its fee based revenues as well as offering  traditional  banking products to the
customers of the Wayne Hummer Companies,  thereby providing a more comprehensive
menu of financial  products  and  services to the  customers of Wintrust and the
Wayne Hummer Companies.

The  initial  purchase  price for the Wayne  Hummer  Companies  is $28  million,
comprised of $8 million of cash,  $15 million of Wintrust's  common stock and $5
million of deferred cash  payments.  The common stock will be issued at the fair
market value as determined in accordance  with the agreement,  but not to exceed
555,556 shares. Wintrust could pay additional contingent  consideration upon the
attainment of certain performance measures over the next five years.

The  transaction  is subject to regulatory  approval and is expected to close in
the first quarter of 2002.






ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS.

(c)      Exhibit

December 26, 2001 Press Release - Wintrust Financial Corporation Announces Plans
to Acquire Wayne Hummer Investments LLC and Wayne Hummer Management Company.


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                                   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.


                         WINTRUST FINANCIAL CORPORATION
                                  (Registrant)


Date: December 26, 2001                                /s/ David A. Dykstra
                                                       --------------------
                                                       Executive Vice President
                                                       & Chief Financial Officer


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