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

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934
                                 (Amendment No.)

                           PIONEER FLOATING RATE TRUST
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                                (Name of Issuer)

                          Auction Rate Preferred Stock
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                         (Title of Class of Securities)

                                    72369J201
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                                 (CUSIP Number)

                                December 31, 2008
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             (Date of Event Which Requires Filing of this Statement)

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

            [X] 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 the disclosures provided in a prior cover page.

      The information required in 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 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).



                                  SCHEDULE 13G
CUSIP No. 72369J201

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1.    NAME OF REPORTING PERSONS
      I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

            MERRILL LYNCH & CO., INC. (MERRILL LYNCH)

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2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) [_]
                                                                         (b) [_]

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3.    SEC USE ONLY

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4.    CITIZENSHIP OR PLACE OF ORGANIZATION

                           Delaware

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  NUMBER OF    5.    SOLE VOTING POWER

   SHARES                  Disclaimed (See #9 below)
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BENEFICIALLY   6.    SHARED VOTING POWER

  OWNED BY                 Disclaimed (See #9 below)
               -----------------------------------------------------------------
    EACH       7.    SOLE DISPOSITIVE POWER

  REPORTING                Disclaimed (See #9 below)
               -----------------------------------------------------------------
   PERSON      8.    SHARED DISPOSITIVE POWER

    WITH                   Disclaimed (See #9 below)
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9.    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

      Merrill Lynch & Co., Inc. disclaims beneficial ownership in all Shares of
PIONEER FLOATING RATE TRUST, held by Merrill Lynch, Pierce Fenner and Smith,
Inc.

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10.   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                                             [_]

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11.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

                           Disclaimed (See #9 above)

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12.   TYPE OF REPORTING PERSON*

                           HC, CO

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                                  SCHEDULE 13G
CUSIP No. 72369J201

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1.    NAME OF REPORTING PERSONS
      I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

            MERRILL LYNCH, PIERCE FENNER & SMITH, INCORPORATED

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2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) [_]
                                                                         (b) [_]

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3.    SEC USE ONLY

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4.    CITIZENSHIP OR PLACE OF ORGANIZATION

                           Delaware

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  NUMBER OF    5.    SOLE VOTING POWER

   SHARES                  2,670
               -----------------------------------------------------------------
BENEFICIALLY   6.    SHARED VOTING POWER

  OWNED BY                 0
               -----------------------------------------------------------------
    EACH       7.    SOLE DISPOSITIVE POWER

  REPORTING                2,670
               -----------------------------------------------------------------
   PERSON      8.    SHARED DISPOSITIVE POWER

    WITH                   0
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9.    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                           2,670

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10.   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
                                                                             [_]

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11.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

                            31.1%

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12.   TYPE OF REPORTING PERSON*

                           BD, IA

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                                  SCHEDULE 13G
CUSIP No. 72369J201

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Item 1(a).  Name of Issuer:

            PIONEER FLOATING RATE TRUST

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Item 1(b).  Address of Issuer's Principal Executive Offices:

            60 STATE STREET
            BOSTON, MA 02109

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Item 2(a).  Name of Person Filing:

            MERRILL LYNCH & CO., INC. (ML&CO)
            MERRILL LYNCH, PIERCE FENNER & SMITH, INCORPORATED (MLPFS)

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Item 2(b).  Address of Principal Business Office, or if None, Residence:

The principal business office for Merrill Lynch & Co., Inc. and Merrill Lynch,
Pierce Fenner & Smith, Incorporated is 4 World Financial Center, 250 Vesey
Street, New York, NY 10080.

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Item 2(c).  Citizenship:

            SEE ITEM 4 OF COVER PAGES

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Item 2(d).  Title of Class of Securities:

            AUCTION RATE PREFERRED STOCK

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Item 2(e).  CUSIP Numbers:

            72369J201, 72369J300, 72369J409

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Item 3.     If This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b) or
            (c), Check Whether the Person Filing is a:

(a) [X]  Broker or dealer registered under Section 15 of the Exchange Act.

(b) [_]  Bank as defined in Section 3(a)(6) of the Exchange Act.

(c) [_]  Insurance company as defined in Section 3(a)19) of the Exchange Act.

(d) [_]  Investment company registered under Section 8 of the Investment Company
         Act.

(e) [X]  An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E)

(f) [_]  An employee benefit plan or endowment fund in accordance with Rule
         13d-1(b)(1)(ii)(F)

(g) [_]  A parent holding company or control person in accordance with Rule
         13d-1(b)(1)(ii)(G)

(h) [_]  A savings association as defined in Section 3(b) of the Federal Deposit
         Insurance Act

(i) [_]  A church plan that is excluded from the definition of an investment
         company under Section 3(c)(14) of the Investment Company Act

(j) [_]  Group, in accordance with Rule 13d-1(b)(1)(ii)(J).



                                  SCHEDULE 13G
CUSIP No. 72369J201

Item 4.     Ownership.

      Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.

The number of shares reported herein represents combined holdings in multiple
series of auction rate preferred securities of the issuer, which are treated
herein as one class of securities in accordance with the Securities and Exchange
Commission's Auction Rate Securities Global Exemptive Relief no action letter
issued on September 22, 2008.

(a) Amount beneficially owned:

            2,670 Shares Auction Rate Preferred Stock

(b) Percent of class:

            31.1%

(c) Number of shares as to which such person has:

      (i)   Sole power to vote or to direct the vote:

            SEE ITEM 5 OF COVER PAGES

      (ii)  Shared power to vote or to direct the vote:

            SEE ITEM 6 OF COVER PAGES

      (iii) Sole power to dispose or to direct the disposition of:

            SEE ITEM 7 OF COVER PAGES

      (iv)  Shared power to dispose or to direct the disposition of

            SEE ITEM 8 OF COVER PAGE

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Item 5.     Ownership of Five Percent or Less of a Class.

      If this statement is being filed to report the fact that as of the date
hereof the reporting person has ceased to be the beneficial owner of more than 5
percent of the class of securities, check the following [_]

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Item 6.     Ownership of More Than Five Percent on Behalf of Another Person.

            NOT APPLICABLE

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Item 7.     Identification and Classification of the Subsidiary Which Acquired
            the Security Being Reported on by the Parent Holding Company.

      Merrill Lynch, Pierce, Fenner & Smith, Incorporated is a wholly owned
subsidiary of Merrill Lynch & Co., Inc.

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Item 8.     Identification and Classification of Members of the Group.

            NOT APPLICABLE

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Item 9.     Notice of Dissolution of Group.

            NOT APPLICABLE

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                                  SCHEDULE 13G
CUSIP No. 72369J201

Item 10.    Certifications.

By signing below I certify that, to the best of my knowledge and belief, the
securities referred to above were acquired and are held in the ordinary course
of business and 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.

                                   SIGNATURES

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

January 12, 2009

MERRILL LYNCH & CO., INC.                MERRILL LYNCH, PIERCE FENNER & SMITH
                                         INCORPORATED


By: /s/ Pia Thompson                     By: /s/ Pia Thompson
-------------------------------------    ---------------------------------------
Name:   Pia Thompson                     Name:   Pia Thompson
Title:  Assistant Secretary              Title:  Assistant Secretary

* Executed pursuant to a Power of Attorney, dated November 17, 1995, a copy of
which is attached hereto as Exhibit A.



                                  Schedule 13G
                                    Exhibit A

                                Power of Attorney

      The undersigned, Merrill Lynch & Co., Inc. (the "Corporation"), a
corporation duly organized under the laws of Delaware, with its principal place
of business at World Financial Center, North Tower, 250 Vesey Street, New York,
New York 10281 does hereby make, constitute and appoint Richard B. Alsop,
Richard D. Kreuder, Andrea Lowenthal, Gregory T. Russo, or any individual from
time to time elected or appointed as secretary or an assistant secretary of the
Corporation, acting severally, each of whose address is Merrill Lynch & Co.,
Inc., World Financial Center, North Tower, 250 Vesey Street, New York, New York
10281, as its true and lawful attorneys- in-fact, for it and in its name, place
and stead (i) to execute on behalf of the Corporation and cause to be filed
and/or delivered, as required under Section 13(d) of the Securities Exchange Act
of 1934 (the "Act") and the regulations thereunder, any number, as appropriate,
of original, copies, or electronic filings of the Securities and Exchange
Commission Schedule 13D or Schedule 13G Beneficial Ownership Reports (together
with any amendments and joint filing agreements under Rule 13d-1(f)(1) of the
Act, as may be required thereto) to be filed and/or delivered with respect to
any equity security (as defined in Rule 13d-1(d) under the Act) beneficially
owned by the undersigned and which must be reported by the undersigned pursuant
to Section 13(d) of the Act and the regulations thereunder, (ii) to execute on
behalf of the Corporation and cause to be filed and/or delivered, any number, as
appropriate, of original, copies or electronic filings of any forms (including
without limitation), Securities and Exchange Commission Forms 3, 4 and 5)
required to be filed pursuant to Section 16(a) of the Act and the regulations
thereunder, and (iii) generally to take such other actions and perform such
other things necessary to effectuate the foregoing as fully in a all respects as
if the undersigned could do if personally present.

      This Power of Attorney shall remain in effect until revoked, in writing,
by the undersigned.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney,
this 17th day of November 1995.


                                  MERRILL LYNCH & CO., INC.


                                  By: /s/ David H. Komansky
                                  ----------------------------------------------
                                  Name:   David H. Komansky
                                  Title:  President and Chief Operating Officer