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  <p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">UNITED STATES</font></b></p>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">SECURITIES AND EXCHANGE
  COMMISSION</font></b></p>
  
  <p style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">WASHINGTON,
  D.C. 20549</font></b></p>
  
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">FORM&nbsp;8-K</font></b></p>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;">CURRENT REPORT<br>
  Pursuant to Section&nbsp;13 or 15(d)&nbsp;of the<br>
  Securities Exchange Act of 1934</font></b></p>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>
  
  <p style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date
  of Report (Date of Earliest Event Reported):&#160;
  <b>April&nbsp;24, 2008</b></font></p>
  
  <p style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">INTERACTIVE BROKERS GROUP,
  INC.</font></b></p>
  
  <p style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact
  Name of Registrant as Specified in its Charter)</font></p>
  
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div align="center">
  
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   <tr>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Delaware</font></b></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">001-33440</font></b></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">30-0390693</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or Other
    Jurisdiction<br>
    of Incorporation)</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Commission File
    Number)</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(I.R.S. Employer<br>
    Identification Number)</font></p>
    </td>
   </tr>
  </table>
  
  </div>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">One Pickwick Plaza, Greenwich, CT 06830</font></b></p>
  
  <p style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address
  of Principal Executive Offices) (Zip Code)</font></p>
  
  <p style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">(203) 618-5800</font></b></p>
  
  <p style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Registrant&#146;s
  Telephone Number, Including Area Code)</font></p>
  
  <p style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Not Applicable</font></b></p>
  
  <p style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Former
  Name or Former Address, if Changed Since Last Report)</font></p>
  
  <p style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the appropriate box below if the Form&nbsp;8-K filing is intended
  to simultaneously satisfy the filing obligation of the registrant under any of
  the following provisions:</font></p>
  
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="2%" valign="top" style="padding:0in 0in 0in 0in;width:2.92%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.26%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.82%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Written communications pursuant to Rule&nbsp;425
    under the Securities Act (17 CFR 230.425)</font></p>
    </td>
   </tr>
   <tr>
    <td width="2%" valign="top" style="padding:0in 0in 0in 0in;width:2.92%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.26%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.82%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Soliciting material pursuant to Rule&nbsp;14a-12
    under the Exchange Act (17 CFR 240.14a-12)</font></p>
    </td>
   </tr>
   <tr>
    <td width="2%" valign="top" style="padding:0in 0in 0in 0in;width:2.92%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.26%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.82%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pre-commencement communications pursuant to
    Rule&nbsp;14d-2(b)&nbsp;under the Exchange Act (17 CFR 240.14d-2(b))</font></p>
    </td>
   </tr>
   <tr>
    <td width="2%" valign="top" style="padding:0in 0in 0in 0in;width:2.92%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.26%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.82%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pre-commencement communications pursuant to
    Rule&nbsp;13e-4(c)&nbsp;under the Exchange Act (17 CFR 240.13e-4(c))</font></p>
    </td>
   </tr>
  </table>
  
  <div style="border:none;border-bottom:double windowtext 6.0pt;padding:0in 0in 0in 0in;">
  
  <p style="border:none;margin:0in 0in .0001pt;padding:0in;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  </div>
  
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div style="margin:0in 0in .0001pt;text-autospace:none;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
  
  </div>
  <!-- SEQ.=1,FOLIO='',FILE='C:\JMS\105627\08-12427-1\task2888156\12427-1-ba.htm',USER='105627',CD='Apr 24 08:10 2008' -->
  
  
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  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 2.02.
  Results of Operations and Financial Condition.</font></b></p>
  
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.45in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On April&nbsp;24, 2008, the
  Registrant issued a press release reporting its financial results for the first
  quarter ended March&nbsp;31, 2008. A copy of the press release is furnished as Exhibit&nbsp;99.1
  to this report and incorporated herein by reference.</font></p>
  
  <p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">All of the information
  furnished in this report (including Exhibit&nbsp;99.1 hereto) shall not be
  deemed to be &#147;filed&#148; for purposes of Section&nbsp;18 of the Securities Exchange
  Act of 1934, as amended, and unless expressly set forth by specific reference
  in such filings, shall not be incorporated by reference in any filing under the
  Securities Act of 1933, as amended, whether made before or after the date
  hereof and regardless of any general incorporation language in such filings.</font></p>
  
  <p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Item 9.01. Financial Statements and Exhibits.</font></b></p>
  
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="69" valign="top" style="padding:0in 0in 0in 0in;width:51.75pt;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(d)</font></p>
    </td>
    <td width="651" valign="top" style="padding:0in 0in 0in 0in;width:488.25pt;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Exhibits.</font></p>
    </td>
   </tr>
   <tr>
    <td width="69" valign="top" style="padding:0in 0in 0in 0in;width:51.75pt;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1</font></p>
    </td>
    <td width="651" valign="top" style="padding:0in 0in 0in 0in;width:488.25pt;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Press Release dated April&nbsp;24, 2008.</font></p>
    </td>
   </tr>
  </table>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2</font></p>
  
  <div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
  
  </div>
  <!-- SEQ.=1,FOLIO='2',FILE='C:\JMS\105627\08-12427-1\task2888156\12427-1-ba.htm',USER='105627',CD='Apr 24 08:10 2008' -->
  
  
  <br clear="all" style="page-break-before:always;">
  
  
  <div>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">SIGNATURE</font></b></p>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>
  
  <p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">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.</font></p>
  
  <p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="42%" valign="top" style="padding:0in 0in 0in 0in;width:42.5%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Dated:&nbsp;&nbsp;April&nbsp;24,
    2008</font></p>
    </td>
    <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.92%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.58%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="42%" valign="top" style="padding:0in 0in 0in 0in;width:42.5%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.92%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.58%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="42%" valign="top" style="padding:0in 0in 0in 0in;width:42.5%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="57%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:57.5%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">INTERACTIVE BROKERS
    GROUP, INC.</font></p>
    </td>
   </tr>
   <tr>
    <td width="42%" valign="top" style="padding:0in 0in 0in 0in;width:42.5%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.92%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.58%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="42%" valign="top" style="padding:0in 0in 0in 0in;width:42.5%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.92%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.58%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="42%" valign="top" style="padding:0in 0in 0in 0in;width:42.5%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.92%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
    </td>
    <td width="50%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:50.58%;">
    <p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;/s/
    Paul J. Brody</font></p>
    </td>
   </tr>
   <tr>
    <td width="42%" valign="top" style="padding:0in 0in 0in 0in;width:42.5%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.92%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
    </td>
    <td width="50%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:50.58%;">
    <p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;Paul
    J. Brody</font></p>
    </td>
   </tr>
   <tr>
    <td width="42%" valign="top" style="padding:0in 0in 0in 0in;width:42.5%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.92%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
    </td>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.58%;">
    <p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;Chief
    Financial Officer,</font></p>
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    <td width="42%" valign="top" style="padding:0in 0in 0in 0in;width:42.5%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.92%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.58%;">
    <p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;Treasurer
    and Secretary</font></p>
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  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3</font></p>
  
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  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">EXHIBIT
  INDEX</font></b></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>
  
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    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1</font></p>
    </td>
    <td width="91%" valign="bottom" style="padding:0in 0in 0in 0in;width:91.26%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Press Release dated April&nbsp;24, 2008.</font></p>
    </td>
   </tr>
  </table>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4</font></p>
  
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metadata_documents: [{"type": "8-K", "sequence": "1", "filename": "a08-12427_18k.htm", "description": "8-K", "secsgml_size_bytes": 23757}]
metadata_filer: {"company-data": {"conformed-name": "Interactive Brokers Group, Inc.", "cik": "0001381197", "assigned-sic": "6211", "irs-number": "000000000", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-33440", "film-number": "08774456"}, "business-address": {"street1": "ONE PICKWICK PLAZA", "city": "GREENWICH", "state": "CT", "zip": "06830", "phone": "203-618-5800"}, "mail-address": {"street1": "ONE PICKWICK PLAZA", "city": "GREENWICH", "state": "CT", "zip": "06830"}}
text: 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 24, 2008
  INTERACTIVE BROKERS GROUP,
  INC.
  (Exact
  Name of Registrant as Specified in its Charter)
  Delaware
  001-33440
  30-0390693
  (State or Other
    Jurisdiction
  of Incorporation)
  (Commission File
    Number)
  (I.R.S. Employer
  Identification Number)
  One Pickwick Plaza, Greenwich, CT 06830
  (Address
  of Principal Executive Offices) (Zip Code)
  (203) 618-5800
  (Registrant's
  Telephone Number, Including Area Code)
  Not Applicable
  (Former
  Name or Former Address, if Changed Since Last Report)
  Check the appropriate box below if the Form 8-K filing is intended
  to simultaneously satisfy the filing obligation of the registrant under any of
  the following provisions:
  o
  Written communications pursuant to Rule 425
    under the Securities Act (17 CFR 230.425)
  o
  Soliciting material pursuant to Rule 14a-12
    under the Exchange Act (17 CFR 240.14a-12)
  o
  Pre-commencement communications pursuant to
    Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
  o
  Pre-commencement communications pursuant to
    Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
  Item 2.02.
  Results of Operations and Financial Condition.
  On April 24, 2008, the
  Registrant issued a press release reporting its financial results for the first
  quarter ended March 31, 2008. A copy of the press release is furnished as Exhibit 99.1
  to this report and incorporated herein by reference.
  All of the information
  furnished in this report (including Exhibit 99.1 hereto) shall not be
  deemed to be "filed" for purposes of Section 18 of the Securities Exchange
  Act of 1934, as amended, and unless expressly set forth by specific reference
  in such filings, shall not be incorporated by reference in any filing under the
  Securities Act of 1933, as amended, whether made before or after the date
  hereof and regardless of any general incorporation language in such filings.
  Item 9.01. Financial Statements and Exhibits.
  (d)
  Exhibits.
  99.1
  Press Release dated April 24, 2008.
  2
  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.
  Dated:  April 24,
    2008
  INTERACTIVE BROKERS
    GROUP, INC.
  By:
  /s/
    Paul J. Brody
  Name:
  Paul
    J. Brody
  Title:
  Chief
    Financial Officer,
  Treasurer
    and Secretary
  3
  EXHIBIT
  INDEX
  99.1
  Press Release dated April 24, 2008.
  4