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): April 15, 2004

                            TradeStation Group, Inc.
             (Exact name of registrant as specified in its charter)

                                     FLORIDA
                 (State or other jurisdiction of incorporation)

        0-31049                                                  65-0977576
(Commission File Number)                                      (I.R.S. Employer
                                                             Identification No.)

          8050 S.W. 10th Street, Suite 4000, Plantation, Florida 33324
          (Address of principal executive offices)             (Zip Code)

       Registrant's telephone number, including area code: (954) 652-7000

                                 Not Applicable
          (Former name or former address, if changed since last report)


                                       1


Item 7. Financial Statements and Exhibits.

      (c)   Exhibits

            Exhibit No.          Exhibit Description
            -----------          -------------------

            99                   Press Release dated April 15, 2004.

Item 12. Results of Operations and Financial Condition.

      TradeStation  Group,  Inc. (the "Company")  reported its financial results
for its first quarter  ended March 31, 2004.  The Company also  released,  along
with its results,  a Business Outlook for the 2004 second quarter. A copy of the
Company's  press  release  issued on April 15,  2004  concerning  the  foregoing
results and the  Business  Outlook for the 2004 second  quarter is  furnished as
part of this report.

                                    SIGNATURE

      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 hereunto duly authorized.

                                     TRADESTATION GROUP, INC.

Date: April 15, 2004                 By: /s/ David H. Fleischman
                                         ---------------------------------------
                                         David H. Fleischman
                                         Chief Financial Officer,
                                         Vice President of Finance and Treasurer


                                       2


                                  EXHIBIT INDEX

              Exhibit No.                 Exhibit Description
              -----------                 -------------------

              99                          Press Release dated April 15, 2004.


                                       3