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<title>Prepared By R.R. Donnelley Financial -- Form 8-K</title>
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<b>UNITED STATES </b></font></div>

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<b>SECURITIES AND EXCHANGE COMMISSION </b></font></div>

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<b>Washington, D.C. 20549 </b></font></div>

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<b>Form 8-K </b></font></div> <div><font Size="1">&nbsp;</font></div>

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<b>Current Report </b></font></div>

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<b>Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 </b></font></div>

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<b>Date of Report (Date of earliest event reported):&nbsp;&nbsp;05/23/2007 </b></font></div>




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<b>NYSE Euronext </b></font></div>

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<b>(Exact name of registrant as specified in its charter)</b></font></div>

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<b>Commission File Number:&nbsp;&nbsp;001-33392</b></font></div>

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<div Align="center"><font Face="times New Roman" Size="3" Color="#000000"><b>Delaware</b></font>
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<b>(State or other jurisdiction of</b></font>
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<b>incorporation)</b></font>
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<b>Identification No.)</b></font>
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<b>11 Wall Street</div><div Align="center">New York, NY 10005</b></font></div>


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<b>(Address of principal executive offices, including zip code)</b></font>
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<b>212-656-3000 </b></font>
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<b>(Registrant&#146;s telephone number, including area code)</b></font>
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<b> </b></font>
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<b>(Former name or former address, if changed since last report) </b></font>
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<b>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:<BR><BR>
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<b>[&nbsp;&nbsp;]&nbsp;&nbsp;
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<BR><BR>

[&nbsp;&nbsp;]&nbsp;&nbsp;
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<BR><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><BR>


[&nbsp;&nbsp;]&nbsp;&nbsp;
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
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Information to be included in the report</b>
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<b>Item 2.02.&nbsp;&nbsp;&nbsp;&nbsp;Results of Operations and Financial Condition</b></font>
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On May 23, 2007, NYSE Euronext issued a press release announcing, on an unaudited pro forma condensed basis as if the merger between NYSE Group and Euronext had been consummated on January 1, 2007, the results of operations for the first quarter of 2007 of NYSE Euronext.&nbsp;&nbsp;&nbsp;<p>A copy of the press release is attached as Exhibit 99.1 to this report and is being furnished in this Form 8-K.  NYSE Euronext does not intend for this Item 2.02 or Exhibit 99.1 to be deemed "filed" for any purposes under the Securities Exchange Act of 1934, as amended, or to be incorporated by reference into any filings under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, amended.</font>
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<b>Item 9.01.&nbsp;&nbsp;&nbsp;&nbsp;Financial Statements and Exhibits</b></font>
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Exhibit 99.1 -- Press Release dated May 23, 2007, announcing the unaudited pro forma combined results of operations of NYSE Euronext, as if the merger between NYSE Group and Euronext had been consummated on January 1, 2007, for the three months ended March 31, 2007.</font>
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<b>Signature(s) </b></font>
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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. </font>
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	NYSE Euronext</font>
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	Date: May 23, 2007</font>
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	By:</font>
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	/s/&nbsp;&nbsp;&nbsp;&nbsp;Nelson Chai</font>
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	Nelson Chai</font>
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	<div><font Face="times New Roman" Size="2" Color="#000000">Chief Financial Officer</font>
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<b>Exhibit Index </b></font>
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	<b>Exhibit&nbsp;No.</b></font>
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	<b>Description</b></font>
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	EX-99.1</font>
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	Press Release dated May 23, 2007, announcing the unaudited pro forma combined results of operations of NYSE Euronext, as if the merger between NYSE Group and Euronext had been consummated on January 1, 2007, for the three months ended March 31, 2007 </font>
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Prepared By R.R. Donnelley Financial -- 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):  05/23/2007
NYSE Euronext
(Exact name of registrant as specified in its charter)
Commission File Number:  001-33392
Delaware
20-5110848
(State or other jurisdiction of
(IRS Employer
incorporation)
Identification No.)
11 Wall Street
New York, NY 10005
(Address of principal executive offices, including zip code)
212-656-3000
(Registrant's telephone number, including area code)
(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))
Information to be included in the report
Item 2.02.    Results of Operations and Financial Condition
On May 23, 2007, NYSE Euronext issued a press release announcing, on an unaudited pro forma condensed basis as if the merger between NYSE Group and Euronext had been consummated on January 1, 2007, the results of operations for the first quarter of 2007 of NYSE Euronext.
A copy of the press release is attached as Exhibit 99.1 to this report and is being furnished in this Form 8-K.  NYSE Euronext does not intend for this Item 2.02 or Exhibit 99.1 to be deemed "filed" for any purposes under the Securities Exchange Act of 1934, as amended, or to be incorporated by reference into any filings under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, amended.
Item 9.01.    Financial Statements and Exhibits
Exhibit 99.1 -- Press Release dated May 23, 2007, announcing the unaudited pro forma combined results of operations of NYSE Euronext, as if the merger between NYSE Group and Euronext had been consummated on January 1, 2007, for the three months ended March 31, 2007.
Signature(s)
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.
NYSE Euronext
Date: May 23, 2007
By:
/s/    Nelson Chai
Nelson Chai
Chief Financial Officer
Exhibit Index
Exhibit No.
Description
EX-99.1
Press Release dated May 23, 2007, announcing the unaudited pro forma combined results of operations of NYSE Euronext, as if the merger between NYSE Group and Euronext had been consummated on January 1, 2007, for the three months ended March 31, 2007