UNITED STATES
                             SECURITIES AND EXCHANGE COMMISSION
                                   WASHINGTON, D.C. 20549



                                          FORM 10-K


  (Mark one)

  /X/ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
      EXCHANGE ACT OF 1934
      For the fiscal year ended December 31, 2004

      OR



  / / TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
      EXCHANGE ACT OF 1934


      Commission File Number:  333-112231-09


        Merrill Lynch Mortgage Investors, Inc.
        Mortgage Loan Asset-Backed Certificates
        Series 2004-WM4

     (Exact name of registrant as specified in its charter)


   New York                                         54-2155154
  (State or other jurisdiction of                   54-2155155
  incorporation or organization)                    54-2155156
                                                    54-6621666
                                                    54-6621667
                                                    54-6621668
                                                    (I.R.S. Employer
                                                    Identification No.)


   c/o Wells Fargo Bank, N.A.
   9062 Old Annapolis Road
   Columbia, Maryland                                21045
  (Address of principal executive offices)     (Zip Code)


  Registrant's telephone number, including area code: (410) 884-2000


  Securities registered pursuant to Section 12(b) of the Act:

        NONE.


  Securities registered pursuant to Section 12(g) of the Act:

        NONE.


  Indicate by check mark whether the registrant (1) has filed all reports
  required to be filed by Section 13 or 15(d) of the Securities Exchange
  Act of 1934 during the preceding 12 months (or for such shorter period
  that the registrant was required to file such reports), and (2) has been
  subject to such filing requirements for the past 90 days.

        Yes  X       No ___


  Indicate by check mark if disclosure of delinquent filers pursuant to
  Item 405 of Regulation S-K ( 229.405 of this chapter) is not contained
  herein, and will not be contained, to the best of registrant's knowledge,
  in definitive proxy or information statements incorporated by reference
  in Part III of this Form 10-K or any amendment to this Form 10-K.

        Not applicable.


  Indicate by check mark whether the registrant is an accelerated filer
  (as defined in Exchange Act Rule 12b-2).

        Yes  ___     No  X


  State the aggregate market value of the voting and non-voting common
  equity held by non-affiliates computed by reference to the price at which
  the common equity was last sold, or the average bid and asked price of
  such common equity, as of the last business day of the registrant's most
  recently completed second fiscal quarter.

        Not applicable.


  Indicate the number of shares outstanding of each of the registrant's
  classes of common stock, as of the latest practicable date.

        Not applicable.


     Documents Incorporated by Reference

  List hereunder the following documents if incorporated by reference and
  the Part of the Form 10-K (e.g. Part I, Part II, etc.) into which the
  document is incorporated: (1)Any annual report to security holders; (2)
  Any proxy or information statement; and (3)Any prospectus filed pursuant
  to Rule 424(b) or (c) under the Securities Act of 1933. The listed
  documents should be clearly described for identification purposes (e.g.
  annual report to security holders for fiscal year ended December 24, 1980).

        Not applicable.


                                   PART I

  Item 1.  Business.

            Omitted.

  Item 2.  Properties.

            See Item 15(a), Exhibits 99.1, 99.2, and 99.3, for information
            provided in lieu of information required by Item 102 of
            Regulation S-K.


  Item 3.  Legal Proceedings.

            The registrant knows of no material pending legal proceedings
            involving the trust created under the Pooling and Servicing
            Agreement (the Trust), the Trustee, the Servicer or the
            registrant with respect to the Trust other than routine
            litigation incidental to the duties of the respective parties.


  Item 4.  Submission of Matters to a Vote of Security Holders.

            None.


                                PART II

  Item 5.  Market for registrant's Common Equity and Related Stockholder
           Matters and Issuer Purchases of Equity Securities.

            No established public trading market for the Certificates exists.

            Records provided to the Trust by the DTC and the Trustee
            indicate that as of December 31, 2004, the total number of holders
            of record for the Series of Certificates is 33.


  Item 6.  Selected Financial Data.

            Omitted.


  Item 7.  Management's Discussion and Analysis of Financial Condition and
           Results of Operation.

            Omitted.


  Item 7A. Quantitative and Qualitative Disclosures about Market Risk.

            Not applicable.


  Item 8.  Financial Statements and Supplementary Data.

            See Item 15(a), Exhibits 99.1, 99.2, 99.3, for information
            provided in lieu of information required by Item 302 of
            Regulation S-K.


  Item 9.  Changes in and Disagreements with Accountants on Accounting and
           Financial Disclosure.

            None.


  Item 9A. Controls and Procedures.

            Not applicable.


  Item 9B. Other Information.

            None.


                                PART III

  Item 10. Directors and Executive Officers of the Registrant.

            Not applicable.


  Item 11. Executive Compensation.

            Not applicable.


  Item 12. Security Ownership of Certain Beneficial Owners and Management.

            Not applicable.

  Item 13. Certain Relationships and Related Transactions.

            Not applicable.


  Item 14. Principal Accounting Fees and Services.

            Not applicable.


                                PART IV

  Item 15. Exhibits, Financial Statement Schedules.

   (a) Exhibits

     (31.1) Rule 13a-14(a)/15d-14(a) Certification

     (99.1) Annual Independent Accountants' Servicing Reports concerning
            servicing activities.

      <TABLE>

      
         <c>
      a) HomeQ Servicing Corporation, as Servicer <F1>

      </TABLE>

     (99.2) Report of Management as to Compliance with Minimum Servicing
            Standards.

      <TABLE>

      
        <c>
      a) HomeQ Servicing Corporation, as Servicer <F1>

      </TABLE>

     (99.3) Annual Statements of Compliance under the Pooling and Servicing
            Agreements.

      <TABLE>

      
         <c>
      a) HomeQ Servicing Corporation, as Servicer <F1>

      </TABLE>


     (99.4) Aggregate Statement of Principal and Interest Distributions to
            Certificate Holders.


   (b) Not applicable.

   (c) Omitted.


  <F1> Filed herewith.


                                SIGNATURES

  Pursuant to the requirements of Section 13 or 15(d) of the Securities
  Exchange Act of 1934, the registrant has duly caused this report to be
  signed on its behalf by the undersigned, thereunto duly authorized:



    Merrill Lynch Mortgage Investors, Inc.
    Mortgage Loan Asset-Backed Certificates
    Series 2004-WM4
    (Registrant)


  Signed: Merrill Lynch Mortgage Investors Inc. as Depositor

  By:     Matthew Whalen, President

  By: /s/ Matthew Whalen, President

  Dated:  March 31, 2005


  SUPPLEMENTAL INFORMATION TO BE FURNISHED WITH REPORTS FILED PURSUANT TO
  SECTION 15(d) OF THE ACT BY REGISTRANTS WHICH HAVE NOT REGISTERED
  SECURITIES PURSUANT TO SECTION 12 OF THE ACT.


  (a)(i) No annual report is provided to the Certificateholders other than
  with respect to aggregate principal and interest distributions.


  (a)(ii) No proxy statement, form of proxy or other proxy soliciting
  material has been sent to any Certificateholder with respect to any
  annual or other meeting of Certificateholders.



  Exhibit Index

  Exhibit No.

  Ex-31.1 Rule 13a-14(a)/15d-14(a) Certification

  I, Matthew Whalen, certify that:

  1. I have reviewed this annual report on Form 10-K, and all reports on
     Form 8-K containing distribution or servicing reports filed in
     respect of periods included in the year covered by this annual report
     , of Merrill Lynch Mortgage Investors, Inc. Mortgage Loan
     Asset-Backed Certificates, Series 2004-WM4 Trust;

  2. Based on my knowledge, the information in these reports, taken as a
     whole, does not contain any untrue statement of a material fact or
     omit to state a material fact necessary to make the statements made,
     in light of the circumstances under which such statements were made,
     not misleading as of the last day of the period covered by this
     annual report;

  3. Based on my knowledge, the distribution or servicing information
     required to be provided to the Trustee by the Servicer under the
     Pooling and Servicing or similar, agreement, for inclusion in these
     reports is included in these reports;

  4. Based on my knowledge and upon the annual compliance statement
     included in the report and required to be delivered to the trustee in
     accordance with the terms of the pooling and servicing, or similar,
     agreement, and except as disclosed in the reports, the servicer has
     fulfilled its obligations under the servicing agreement; and

  5. The reports disclose all significant deficiencies relating to the
     servicer's compliance with the minimum servicing standards based upon
     the report provided by an independent public accountant, after
     conducting a review in compliance with the Uniform Single Attestation
     Program for Mortgage Bankers or similar procedure, as set forth in
     the pooling and servicing, or similar, agreement, that is included in
     these reports.

     In giving the certifications above, I have reasonably relied on
     information provided to me by the following unaffiliated parties:
     HomeQ Servicing Corporation as Servicer, Wells Fargo Bank Minnesota,
     N.A. as Trustee.

     Date:  March 31, 2005

     /s/ Matthew Whalen
     Signature

     President
     Title


  EX-99.1
(logo) KPMG

KPMG LLP
Suite 2300
Three Wachovia Center
401 South Tryon Street
Charlotte, NC 28202-1911


Independent Accountants' Report


The Board of Directors
HomEq Servicing Corporation

We have examined management's assertion, included in the accompanying
Management's Assertion, that Homeq Servicing Corporation (the Company) complied
in all material respects with the minimum servicing standards set forth in the
Mortgage Bankers Association of America's Uniform Single Attestation Program for
Mortgage Bankers, as of and for the year ended December 31, 2004. Management is
responsible for the Company's compliance with those minimum servicing standards.
Our responsibility is to express an opinion on management's assertion about the
Company's compliance based on our examination.

Our examination was conducted in accordance with attestation standards
established by the American Institute of Certified Public Accountants and,
accordingly, included examining, on a test basis, evidence about the Company's
compliance with the minimum servicing standards specified above and performing
such other procedures as we considered necessary in the circumstances. We
believe that our examination provides a reasonable basis for our opinion. Our
examination does not provide a legal determination on the Company's compliance
with the minimum servicing standards.

In our opinion, management's assertion that the Company complied with the
aforementioned minimum servicing standards as of and for the year ended December
31, 2004 is fairly stated, in all material respects.

/s/ KPMG LLP


February 25, 2005





KPMG LLP a U.S. limited liability partnership in the U.S.
member firm KPMG international a Swiss cooperative





  EX-99.2
(logo) HOMEQ SERVICING


MANAGEMENT'S ASSERTION


As of and for the year ended December 31, 2004, HomEq Servicing Corporation
(the "Company") complied in all material respects with the minimum servicing
standards set forth in the Mortgage Bankers Association of America's Uniform
Single Attestation Program for Mortgage Bankers. As of and for this same
period, the Company had in effect a fidelity bond and errors and omissions
policy in the amounts of $200 million and $20 million, respectively.


HomEq Servicing Corporation


/s/ Arthur Q. Lyon
Arthur Q. Lyon
President

February 25, 2005
Date


/s/ Keith G. Becher
Keith G. Becher Date
Chief Operating Officer

February 25, 2005
Date



(logo)Wachovia





  EX-99.3
(logo) HOMEQ SERVICING


Exhibit "A"



Wells Fargo Bank Minnesota, N.A.
9062 Old Annapolis Road
Columbia, MD 21045
Attention: Servicer Oversight Group

RE: Officer's Certificate

Dear Master Servicer:

The undersigned Officer certifies the following for the 2004 fiscal year:

A review of the activities of the Servicer during the 2004 calendar year and the
Servicer's performance under the Servicing Agreement has been made under my
supervision, the Servicer has complied with the Servicing Agreement in all
material respects and, to the best of my knowledge, based on such review, the
Servicer has materially fulfilled all of its obligations under the Servicing
Agreement throughout such calendar year.


/s/ Arthur Q. Lyon
Officer-Arthur Q. Lyon
Title - President
Date March 16, 2005







(Logo) WACHOVIA





  Ex-99.4

   Schedule of Year-To-Date Principal and Interest Distributions to
   Certificateholders


   <TABLE>

   Class                              Interest             Principal               Losses             Ending Balance
   
                       <c>                    <c>                  <c>                 <c>
   A-1A                           5,857,170.23        138,110,919.97                 0.00             447,474,080.04
   A-1B                             323,587.44          7,268,933.71                 0.00              23,551,066.28
   A-2B1                          1,721,859.21        131,677,869.19                 0.00              96,721,130.81
   A-2B2                          1,720,745.37                  0.00                 0.00             162,516,000.00
   A-2B3                            402,304.63                  0.00                 0.00              34,152,000.00
   B-1                              388,854.58                  0.00                 0.00              19,589,000.00
   B-2                              278,328.56                  0.00                 0.00              13,059,000.00
   B-3                              576,664.12                  0.00                 0.00              19,589,000.00
   B-4                              440,749.98                  0.00                 0.00              17,630,000.00
   C                             21,935,487.43                  0.00             7,205.68              11,753,292.00
   M-1                            1,090,914.40                  0.00                 0.00              88,150,000.00
   M-2                            1,141,781.50                  0.00                 0.00              71,826,000.00
   M-3                              385,581.11                  0.00                 0.00              22,854,000.00
   R                                      0.18                100.00                 0.00                       0.00
   S                              3,739,222.35                  0.00                 0.00             999,481,277.13
   </TABLE>