Exhibit10.19

May 31, 2005

Campbell & Company,Inc.Court Tower Building210 West PennsylvaniaAvenueSuite 770Towson, MD 21204

Attn: Ms.Terry  Becks

Re: Management AgreementRenewals

Dear Ms.  Becks:

We arewriting with respect to your management agreements concerning thecommodity pools to which reference is made below (the‘‘Management Agreements’’). We areextending the term of the Management Agreements through June30,  2006 and all other provisions of the Management Agreementswill remain unchanged.

|              |                                       |
|--------------|---------------------------------------|
| •  | Smith BarneyPotomac Futures Fund L.P. |

|              |                                          |
|--------------|------------------------------------------|
| •  | SmithBarney Diversified Futures FundL.P. |

|              |                                              |
|--------------|----------------------------------------------|
| •  | Smith Barney DiversifiedFutures Fund L.P. II |

|              |                                             |
|--------------|---------------------------------------------|
| •  | Smith BarneyGlobal Markets Futures FundL.P. |

|              |                                                 |
|--------------|-------------------------------------------------|
| •  | Smith Barney GlobalDiversified Futures FundL.P. |

|              |                                                       |
|--------------|-------------------------------------------------------|
| •  | Salomon Smith BarneyDiversified 2000 Futures FundL.P. |

|              |            |
|--------------|------------|
| •  | AURORA2001 |

|              |           |
|--------------|-----------|
| •  | AURORAIII |

|              |                              |
|--------------|------------------------------|
| •  | CMF Campbell Master FundL.P. |

Please acknowledge receipt of this modification bysigning one copy of this letter and returning it to the attention ofMr.  Daniel  McAuliffe at the address above or fax to212-793-1986. If you have any questions I can be reached at212-559-5043.

Very trulyyours,

CITIGROUP MANAGED FUTURESLLC

By: /s/ Daniel R. McAuliffe,Jr.         DanielR. McAuliffe, Jr.

Chief Financial Officer &Director

CAMPBELL & COMPANY,INC.

By: /s/ TheresaBecks             

PrintName: Theresa Becks                                        

DRMcA/sr

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June15,  2005

Aspect Capital ManagementLtd.Nations House — 8th Floor103 WigmoreStreetLondon W1U 1QS, U.K.

Attention:Mr.  Anthony  Todd

Re: ManagementAgreement Renewals

Dear Mr.  Todd:

Weare writing with respect to your management agreements concerning thecommodity pools to which reference is made below (the‘‘Management Agreements’’). We areextending the term of the Management Agreements through June30,  2006 and all other provisions of the Management Agreementswill remain unchanged.

|  |              |                                                         |
|--|--------------|---------------------------------------------------------|
|  | •  | Salomon SmithBarney Global Diversified Futures FundL.P. |

|  |              |                                                        |
|--|--------------|--------------------------------------------------------|
|  | •  | Salomon Smith Barney Diversified2000 Futures Fund L.P. |

|  |              |                                        |
|--|--------------|----------------------------------------|
|  | •  | CitigroupDiversified Futures Fund L.P. |

|  |              |          |
|--|--------------|----------|
|  | •  | Alera100 |

Please acknowledge receipt of this modification bysigning one copy of this letter and returning it to the attention ofMr.  Daniel  McAuliffe at the address above or fax to212-793-1986. If you have any questions I can be reached at212-559-5043.

Very truly yours,

CITIGROUPMANAGED FUTURES LLC

    

By: /s/ Daniel R.McAuliffe,Jr.                

Daniel R.McAuliffe, Jr.Chief Financial Officer &Director

    

By: /s/ AnthonyTodd                                   

PrintName: AnthonyTodd                        

DRMcA/sr

1

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June15,  2005

Altis PartnersLimited5th Fl. Sackville House40PiccadillyW1J0DR England

Attention: Mr.Stephen  Hedgecock

Re: ManagementAgreement Renewals

Dear Mr.Hedgecock:

We are writing with respect to your managementagreements concerning the commodity pools to which reference ismade below (the ‘‘Management Agreements’’).We are extending the term of the Management Agreements throughJune  30,  2006 and all other provisions of the ManagementAgreements will remain unchanged.

|  |              |                |
|--|--------------|----------------|
|  | •  | CTACapital LLC |

|  |              |                                                          |
|--|--------------|----------------------------------------------------------|
|  | •  | Salomon Smith Barney GlobalDiversified Futures Fund L.P. |

|  |              |                                      |
|--|--------------|--------------------------------------|
|  | •  | CitigroupEmerging CTA Portfolio L.P. |

Please acknowledge receipt ofthis modification by signing one copy of this letter and returning itto the attention of Mr.  Daniel  McAuliffe at the addressabove or fax to 212-793-1986. If you have any questions I can bereached at 212-559-5043.

Very trulyyours,

CITIGROUP MANAGED FUTURESLLC

By: /s/ Daniel R. McAuliffe,Jr.         

DanielR. McAuliffe, Jr.Chief Financial Officer &Director

By: /s/ StephenHedgecock                

PrintName: StephenHedgecock                                

DRMcA/sr

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