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  <TITLE> Chicago Mercantile Exchange Holdings Inc. (Form: 8-K) </TITLE>
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  		UNITED STATES<BR>
  	SECURITIES AND EXCHANGE COMMISSION
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  	WASHINGTON, D.C. 20549
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  	FORM 8-K
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  	CURRENT REPORT
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  	Pursuant to Section&nbsp;13 or 15(d) of the Securities Exchange Act of 1934
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  	Date of Report (Date of Earliest Event Reported):
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  	&nbsp;
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  	April 25, 2007
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  	Chicago Mercantile Exchange Holdings Inc.
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  <BR>__________________________________________<BR>
  	(Exact name of registrant as specified in its charter)
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  	Delaware
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  	000-33379
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  	36-4459170
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  _____________________<BR>
  	(State or other jurisdiction
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  _____________<BR>
  	(Commission
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  ______________<BR>
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  	of incorporation)
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  	File Number)
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  	Identification No.)
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  	&nbsp;&nbsp;
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  	20 South Wacker Drive, Chicago, Illinois
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  	60606
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  _________________________________<BR>
  	(Address of principal executive offices)
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  	&nbsp;
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  ___________<BR>
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  	Registrant&#146;s telephone number, including area code:
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  	&nbsp;
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  	312-930-1000
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  	Not Applicable
  <BR>______________________________________________<BR>
  	Former name or former address, if changed since last report
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  	&nbsp;
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  <!-- CoverPageRegistrant END --><P><FONT SIZE="2">
  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:</FONT>
  </P>
  <P><FONT SIZE="2">
  [&nbsp;&nbsp;]&nbsp;&nbsp;Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<br>
  [&nbsp;&nbsp;]&nbsp;&nbsp;Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<br>
  [&nbsp;&nbsp;]&nbsp;&nbsp;Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<br>
  [&nbsp;&nbsp;]&nbsp;&nbsp;Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<br>
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  	Item 1.01 Entry into a Material Definitive Agreement.
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  On April 25, 2007, the shareholders of Chicago Mercantile Exchange Holdings Inc. (the "Company") approved an amendment to the Chicago Mercantile Exchange Holdings Inc. Omnibus Stock Plan (the "Omnibus Stock Plan") and an amendment to the Chicago Mercantile Exchange Holdings Inc. Annual Incentive Plan (the "AIP"), pursuant to proposals that were submitted to the shareholders for approval at the Company&#x2019;s Annual Meeting of Shareholders. <br> <br>OMNIBUS STOCK PLAN<br><br>The following summary of the Omnibus Stock Plan is qualified in its entirely by reference to the complete text of the plan, a copy of which is filed as Exhibit 10.1 to this Report and is incorporated herein by reference.  <br><br>The Omnibus Stock Plan is administered by the Compensation Committee of the Board of Directors of the Company.  The plan has 4,045,975 shares authorized, subject to adjustment in the event of stock dividends, stock splits, combination of shares, recapitalizations or other changes in our outstanding common stock.  Under the plan, the Company may issue equity awards consisting of stock options, stock appreciation rights, stock awards and performance share awards.  Upon a change in control as defined in the plan, all outstanding awards will vest, become immediately exercisable or payable or have all restrictions lifted as may apply to the type of award granted.  Employees of the Company and its subsidiaries are eligible to be granted awards under the plan.  The plan will terminate on June 30, 2012, unless earlier terminated by the Board of Directors or extended by the Board with the approval of the shareholders.  <br><br>ANNUAL INCENTIVE PLAN<br><br>The following summary of the AIP is qualified in its entirely by reference to the complete text of the plan, a copy of which is filed as Exhibit 10.2 to this Report and is incorporated herein by reference.  <br><br>The AIP is administered by the Compensation Committee of the Board of Directors of the Company.  The purpose of the AIP is to award annual bonus compensation to our employees and to align the interests of our employees with those of our shareholders.  The AIP is designed to serve as a qualified performance-based compensation program under Section 162(m) of the Internal Revenue Code to preserve our tax deduction for compensation paid under the AIP to our most senior executive officers.  Any employee of the Company or its subsidiaries who is selected by the Compensation Committee may participate in the AIP for the designated plan year.  We use cash earnings as the performance metric for determining awards under the plan.  The maximum annual bonus under the AIP is $2,500,000.  The plan has a term of five years.  <br><br>On April 26, 2007, Compensation Committee of the Board of Directors of the Company approved an amendment to the AIP to delete the provision allowing participants to designate a beneficiary under the plan to correspond to the Company&#x2019;s administrative procedures.  Such amendment is reflected in Exhibit 10.2.  <br>
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  	SIGNATURES
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  	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.
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  	Chicago Mercantile Exchange Holdings Inc.
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  	&nbsp;&nbsp;
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  <I>
  	April 27, 2007
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  	By:
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  <I>
  	Kathleen M. Cronin
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  <I>
  	Name: Kathleen M. Cronin
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  <I>
  	Title: Managing Director, General Counsel and Corporate Secretary
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  	Exhibit&nbsp;Index
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  	Exhibit No.
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  	Description
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  	10.1
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  	&nbsp;
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  Amended and Restated Omnibus Stock Plan
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  	10.2
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  Amended and Restated Annual Incentive Plan
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metadata_documents: [{"type": "8-K", "sequence": "1", "filename": "htm_19888.htm", "description": "LIVE FILING", "secsgml_size_bytes": 12854}]
metadata_filer: {"company-data": {"conformed-name": "CHICAGO MERCANTILE EXCHANGE HOLDINGS INC", "cik": "0001156375", "assigned-sic": "6200", "irs-number": "364459170", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-33379", "film-number": "07799482"}, "business-address": {"street1": "20 S. WACKER DR.", "city": "CHICAGO", "state": "IL", "zip": "60606", "phone": "3129303011"}, "mail-address": {"street1": "20 S. WACKER DR.", "city": "CHICAGO", "state": "IL", "zip": "60606"}}
text: Chicago Mercantile Exchange Holdings Inc. (Form: 8-K)
  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 25, 2007
  Chicago Mercantile Exchange Holdings Inc.
  __________________________________________
  (Exact name of registrant as specified in its charter)
  Delaware
  000-33379
  36-4459170
  _____________________
  (State or other jurisdiction
  _____________
  (Commission
  ______________
  (I.R.S. Employer
  of incorporation)
  File Number)
  Identification No.)
  20 South Wacker Drive, Chicago, Illinois
  60606
  _________________________________
  (Address of principal executive offices)
  ___________
  (Zip Code)
  Registrant's telephone number, including area code:
  312-930-1000
  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:
  [  ]  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
  [  ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
  [  ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
  [  ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
  Top of the Form
  Item 1.01 Entry into a Material Definitive Agreement.
  On April 25, 2007, the shareholders of Chicago Mercantile Exchange Holdings Inc. (the "Company") approved an amendment to the Chicago Mercantile Exchange Holdings Inc. Omnibus Stock Plan (the "Omnibus Stock Plan") and an amendment to the Chicago Mercantile Exchange Holdings Inc. Annual Incentive Plan (the "AIP"), pursuant to proposals that were submitted to the shareholders for approval at the Company's Annual Meeting of Shareholders.
  OMNIBUS STOCK PLAN
  The following summary of the Omnibus Stock Plan is qualified in its entirely by reference to the complete text of the plan, a copy of which is filed as Exhibit 10.1 to this Report and is incorporated herein by reference.
  The Omnibus Stock Plan is administered by the Compensation Committee of the Board of Directors of the Company.  The plan has 4,045,975 shares authorized, subject to adjustment in the event of stock dividends, stock splits, combination of shares, recapitalizations or other changes in our outstanding common stock.  Under the plan, the Company may issue equity awards consisting of stock options, stock appreciation rights, stock awards and performance share awards.  Upon a change in control as defined in the plan, all outstanding awards will vest, become immediately exercisable or payable or have all restrictions lifted as may apply to the type of award granted.  Employees of the Company and its subsidiaries are eligible to be granted awards under the plan.  The plan will terminate on June 30, 2012, unless earlier terminated by the Board of Directors or extended by the Board with the approval of the shareholders.
  ANNUAL INCENTIVE PLAN
  The following summary of the AIP is qualified in its entirely by reference to the complete text of the plan, a copy of which is filed as Exhibit 10.2 to this Report and is incorporated herein by reference.
  The AIP is administered by the Compensation Committee of the Board of Directors of the Company.  The purpose of the AIP is to award annual bonus compensation to our employees and to align the interests of our employees with those of our shareholders.  The AIP is designed to serve as a qualified performance-based compensation program under Section 162(m) of the Internal Revenue Code to preserve our tax deduction for compensation paid under the AIP to our most senior executive officers.  Any employee of the Company or its subsidiaries who is selected by the Compensation Committee may participate in the AIP for the designated plan year.  We use cash earnings as the performance metric for determining awards under the plan.  The maximum annual bonus under the AIP is $2,500,000.  The plan has a term of five years.
  On April 26, 2007, Compensation Committee of the Board of Directors of the Company approved an amendment to the AIP to delete the provision allowing participants to designate a beneficiary under the plan to correspond to the Company's administrative procedures.  Such amendment is reflected in Exhibit 10.2.
  Top of the Form
  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 hereunto duly authorized.
  Chicago Mercantile Exchange Holdings Inc.
  April 27, 2007
  By:
  Kathleen M. Cronin
  Name: Kathleen M. Cronin
  Title: Managing Director, General Counsel and Corporate Secretary
  Top of the Form
  Exhibit Index
  Exhibit No.
  Description
  10.1
  Amended and Restated Omnibus Stock Plan
  10.2
  Amended and Restated Annual Incentive Plan