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SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No.________)*

Greektown Superholdings, Inc.

(Name of Issuer)

Series A-1 Common Stock

(Title of Class of Securities)

392485108

(CUSIP Number)

June 30, 2010

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

Page 1 of 10 pages

CUSIP No. 392485108

1)	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (entities only) Regiment Capital Ltd.
2)	Check the Appropriate Box if a Member of a Group (See Instructions)
	(a) o (b) x
3)	SEC Use Only
4)	Citizenship or Place of Organization Cayman Islands

Number of Shares Beneficially Owned by Each Reporting Person With	5)	Sole Voting Power 0
	6)	Shared Voting Power 0
	7)	Sole Dispositive Power 0
	8)	Shared Dispositive Power 0

9)	Aggregate Amount Beneficially Owned by Each Reporting Person 8,261 shares owned by Regiment Capital Ltd.
10)	Check if the Aggregate Amount in Row (9) ExcludesCertain Shares (See Instructions) o
11)	Percent of Class Represented by Amount in Item 9 5.9%
12)	Type of Reporting Person (See Instructions) CO

Page 2 of 10 pages

CUSIP No. 392485108

1)	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (entities only) Regiment Capital Management, LLC
2)	Check the Appropriate Box if a Member of a Group (See Instructions)
	(a) o (b) x
3)	SEC Use Only
4)	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With	5)	Sole Voting Power 11,334
	6)	Shared Voting Power 0
	7)	Sole Dispositive Power 17,886
	8)	Shared Dispositive Power 0

9)	Aggregate Amount Beneficially Owned by Each Reporting Person 17,886
10)	Check if the Aggregate Amount in Row (9) ExcludesCertain Shares (See Instructions) o
11)	Percent of Class Represented by Amount in Item 9 12.8%
12)	Type of Reporting Person (See Instructions) OO

Page 3 of 10 pages

CUSIP No. 392485108

1)	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (entities only) Regiment Capital Advisors, LP
2)	Check the Appropriate Box if a Member of a Group (See Instructions)
	(a) o (b) x
3)	SEC Use Only
4)	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With	5)	Sole Voting Power 0
	6)	Shared Voting Power 0
	7)	Sole Dispositive Power 0
	8)	Shared Dispositive Power 0

9)	Aggregate Amount Beneficially Owned by Each Reporting Person None, except indirectly through its wholly owned subsidiary, Regiment Capital Management, LLC
10)	Check if the Aggregate Amount in Row (9) ExcludesCertain Shares (See Instructions) o
11)	Percent of Class Represented by Amount in Item 9 See line 9 above
12)	Type of Reporting Person (See Instructions) OO

Page 4 of 10 pages

CUSIP No. 392485108

1)	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (entities only) Regiment Capital Advisors, LLC
2)	Check the Appropriate Box if a Member of a Group (See Instructions)
	(a) o (b) x
3)	SEC Use Only
4)	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With	5)	Sole Voting Power 0
	6)	Shared Voting Power 0
	7)	Sole Dispositive Power 0
	8)	Shared Dispositive Power 0

9)	Aggregate Amount Beneficially Owned by Each Reporting Person None, except indirectly through an entity for which it serves as general partner, Regiment Capital Advisors, LP
10)	Check if the Aggregate Amount in Row (9) ExcludesCertain Shares (See Instructions) o
11)	Percent of Class Represented by Amount in Item 9 See line 9 above
12)	Type of Reporting Person (See Instructions) OO

Page 5 of 10 pages

CUSIP No. 392485108

1)	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (entities only) Timothy Peterson
2)	Check the Appropriate Box if a Member of a Group (See Instructions)
	(a) o (b) x
3)	SEC Use Only
4)	Citizenship or Place of Organization USA

Number of Shares Beneficially Owned by Each Reporting Person With	5)	Sole Voting Power 0
	6)	Shared Voting Power 0
	7)	Sole Dispositive Power 0
	8)	Shared Dispositive Power 0

9)	Aggregate Amount Beneficially Owned by Each Reporting Person None, except indirectly through Regiment Capital Advisors, LLC
10)	Check if the Aggregate Amount in Row (9) ExcludesCertain Shares (See Instructions) o
11)	Percent of Class Represented by Amount in Item 9 See line 9 above
12)	Type of Reporting Person (See Instructions) IN

Page 6 of 10 pages

Item 1(a)

Name of Issuer

Greektown Superholdings, Inc. (the “Issuer”)

Item 1(b)

Address of Issuer's Principal Executive Offices:

555 East Lafayette

Detroit, Michigan 48226

Item 2(a)

Name of Person Filing:

This filing is made by Regiment Capital Management, LLC (“RCM”), RCM’s parent company, Regiment Capital Advisors, LP (“LP”), LP’s general partner, Regiment Capital Advisors, LLC (“LLC”), and LLC’s managing member, Timothy Peterson with respect to shares of Series A-1 Common Stock of the Issuer that are directly owned by Regiment Capital Ltd. (“RCL”) and other accounts managed by RCM. This filing is also made by RCL with respect to the shares of Series A-1 Common Stock of the Issuer that it owns directly (which are included in the totals reflected in the filings for each other person named herein).

Item 2(b)

Address of Principal Business Office:

Address for RCM, LP, LLC, and Timothy Peterson:

c/o Regiment Capital Advisors, LP

222 Berkeley Street, 12th Floor

Boston, MA 02116

Address for RCL:

Regiment Capital Ltd.

c/o Maples and Calder

Ugland House

South Church Street

George Town, Grand Cayman

Cayman Islands

Item 2(c)

Citizenship:

RCM – Delaware

LP – Delaware

LLC – Delaware

Timothy Peterson – United States

RCL – Cayman Islands

Item 2(d)

Title of Class of Securities:

Series A-1 Common Stock

Item 2(e)

CUSIP Number:

392485108

Page 7 of 10 pages

Item 3

N/A

Item 4

Ownership:

(a)

Amount Beneficially Owned: RCM has beneficial ownership of 17,886 shares of Series A-1 Common Stock, of which RCL holds direct ownership of 8,261 shares. LP, LLC, and Timothy Peterson hold indirect beneficial ownership through their relationship with RCM as more fully described in Item 2(a) above.

(b)

Percent of Class:

RCM, LP, LLC and Timothy Peterson shares – 12.8%

RCL shares – 5.9%

(c)

Number of shares as to which the person has:

(i)

sole power to vote or to direct the vote:

RCM, LP, LLC and Timothy Peterson have sole power to vote or to direct the voting of 11,334 of the shares of Series A-1 Common Stock that they beneficially own (they do not have power to vote or direct the voting of the remaining shares that they beneficially own). RCL has no voting power over the shares of Series A-1 Common Stock that it beneficially owns.

(ii)

shared power to vote or to direct the vote:

None

(iii)

sole power to dispose or to direct the disposition of:

RCM, LP, LLC and Timothy Peterson have sole power to dispose or to direct the disposition of 17,886 shares of Series A-1 Common Stock. RCL has no power to dispose or to direct the disposition of shares.

(iv)

shared power to dispose or to direct the disposition of:

None

Item 5

Ownership of Five Percent or Less of a Class:

N/A

Item 6

Ownership of More than Five Percent on Behalf of Another Person:

The shares of Series A-1 Common Stock are directly owned by RCL and other accounts managed by RCM. RCM is the investment manager for RCL and each such account. Each of LP, LLC and Timothy Peterson has the power to direct the dividends from or the proceeds of the sale of the Series A-1 Common Stock owned by RCL and such accounts.

Page 8 of 10 pages

Item 7

Identification and Classification of the Subsidiary which Acquired the Security Being Reported on by the Parent Holding Company or Control Person:

N/A

Item 8

Identification and Classification of Members of the Group:

RCL, RCM, LP, LLC and Timothy Peterson constitute a group. Each disclaims beneficial ownership of securities beneficially owned by the others.

Item 9

Notice of Dissolution of Group:

N/A

Page 9 of 10 pages

Item 10

Certification:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

Signature

After reasonable inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

	Regiment Capital Management, LLC

	By:
	Name:	Derek Meisner
	Dated:	January 3, 2011
	Title:	Authorized Signatory


	Regiment Capital Ltd.

	By:
	Name:	Don Seymour
	Dated:	January 3, 2011
	Title:	Director


	Regiment Capital Advisors, LP

	By:
	Name:	Marc Volpe
	Dated:	January 3, 2011
	Title:	Chief Compliance Officer


	Regiment Capital Advisors, LLC

	By:
	Name:	Timothy Peterson
	Dated:	January 3, 2011
	Title:	Managing Member


	Timothy Peterson

	By:
	Dated:	January 3, 2011

Page 10 of 10 pages

JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)(1)

The undersigned acknowledge and agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13G shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing statements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him, her or it contained herein, but shall not be responsible for the completeness and accuracy of the information concerning the other entities or persons, except to the extent that he, she or it knows or has reason to believe such information is inaccurate.

	Regiment Capital Management, LLC

	By:
	Name:	Derek Meisner
	Dated:	January 3, 2011
	Title:	Authorized Signatory


	Regiment Capital Ltd.

	By:
	Name:	Don Seymour
	Dated:	January 3, 2011
	Title:	Director


	Regiment Capital Advisors, LP

	By:
	Name:	Marc Volpe
	Dated:	January 3, 2011
	Title:	Chief Compliance Officer


	Regiment Capital Advisors, LLC

	By:
	Name:	Timothy Peterson
	Dated:	January 3, 2011
	Title:	Managing Member


	Timothy Peterson

	By:
	Dated:	January 3, 2011

Page 11 of 10 pages