**Exhibit31.2**

 

CERTIFICATION OFPRINCIPAL EXECUTIVE OFFICER

 

I, Harvey Beker, certifythat:

 

1.  I have reviewed this annual report on Form 10-Kof Global Macro Trust (the “Trust”);

 

2.  Based on my knowledge, this annual reportdoes not contain any untrue statement of a material fact or omit to state amaterial fact necessary to make the statements made, in light of thecircumstances under which such statements were made, not misleading withrespect to the period covered by this annual report;

 

3.  Based on my knowledge, the financialstatements, and other financial information included in this annual report,fairly present in all material respects the financial condition, results ofoperations and cash flows of the Trust as of, and for, the periods presented inthis annual report;

 

4. The Trust’s othercertifying officers and I are responsible for establishing and maintainingdisclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and15d-15(e)) and internal control over financial reporting (as defined inExchange Act Rules 13a-15(f) and 15d-15(f)) for the Trust and wehave:

 

  (a)  designed such disclosure controlsand procedures, or caused such disclosure controls and procedures to bedesigned under our supervision, to ensure that material information relating tothe Trust, including its consolidated subsidiaries, is made known to us byothers within those entities, particularly during the period in which thisannual report is being prepared;

 

  (b)  designed such internal control overfinancial reporting, or caused such internal control over financial reportingto be designed under our supervision, to provide reasonable assurance regardingthe reliability of financial reporting and the preparation of financialstatements for external purposes in accordance with generally acceptedaccounting principals;

 

  (c) evaluated the effectiveness of theTrust’s disclosure controls and procedures and presented in this annual reportour conclusions about the effectiveness of the disclosure controls andprocedures, as of the end of the period covered by this report based on suchevaluation; and

 

  (d) disclosed in this report any changein the Trust’s internal control over financial reporting that occurred duringthe Trust’s fourth fiscal quarter that has materially affected, or isreasonably likely to materially affect, the Trust’s internal control overfinancial reporting;

 

5.  The Trust’s other certifying officers and Ihave disclosed, based on our most recent evaluation of internal control over financialreporting, to the Trust’s auditors and the audit committee of the Trust’s boardof directors (or persons performing the equivalent functions):

 

  (a) all significant deficiencies andmaterial weaknesses in the design or operation of internal control overfinancial reporting which are reasonably likely to adversely affect the Trust’sability to record, process, summarize and report financial information; and

 

  (b) any fraud, whether or not material,that involves management or other employees who have a significant role in theTrust’s internal control over financial reporting.

 

By:

 
| /s/ Harvey Beker                    |
|-------------------------------------|
| Harvey Beker                        |
| Co-Chief Executive  Officer         |
| Millburn Ridgefield  Corporation    |
| Managing Owner, Global  Macro Trust |
| March 28, 2008                 |

 

 

 

 

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