SECURITIES & EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------

                                  SCHEDULE 13G*
                                 (Rule 13d-102)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULES 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED
                              PURSUANT TO 13d-2(b)

                                (Amendment No. )

                           Prospect Acquisition Corp.
                                (Name of Issuer)

                    Common stock, par value $0.0001 per share
                         (Title of Class of Securities)

                                    74347T103
                                 (CUSIP Number)

                                  July 29, 2009
             (Date of event which requires filing of this statement)


     Check the appropriate box to designate the rule pursuant to which this
Schedule 13G is filed:
         [ ] Rule 13d-1(b)
         [X] Rule 13d-1(c)
         [ ] Rule 13d-1(d)





                               (Page 1 of 8 Pages)
----------------
         *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 purposes 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).





CUSIP No. 74347T103                13G                    Page 2 of 8 Pages

-----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO.
            OF ABOVE PERSONS (ENTITIES ONLY)
                                    Arrowgrass Capital Partners (US) LP
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [X]
                                                                  (b)  [ ]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
                                    Delaware
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                1,719,300
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                                                -0-
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                1,719,300
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                                1,719,300
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                                5.5%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
                                                PN
-----------------------------------------------------------------------------
                    ** SEE INSTRUCTIONS BEFORE FILLING OUT!





CUSIP No. 74347T103                13G                    Page 3 of 8 Pages

-----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO.
            OF ABOVE PERSONS (ENTITIES ONLY)
                                      Arrowgrass Capital Services (US) Inc.
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [X]
                                                                  (b)  [ ]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
                                    Delaware
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                1,719,300
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                                                -0-
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                1,719,300
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                                1,719,300
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                                5.5%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
                                                CO
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!





CUSIP No. 74347T103                13G                    Page 4 of 8 Pages

Item 1(a).     Name of Issuer:

     The name of the issuer is Prospect Acquisition Corp. (the "Company").

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

     The Company's principal executive offices are located at 9130 Galleria
Court, Suite 318, Naples, FL, 34109.


Item 2(a).     Name of Person Filing:

     This statement is filed by:
           (i)  Arrowgrass Capital Partners (US) LP, a Delaware limited
                partnership ("ACP"), with respect to the Common Stock
                directly owned by it; and
           (ii) Arrowgrass Capital Services (US) Inc., a Delaware
                corporation ("ACS"), with respect to the Common Stock
                directly owned by ACP.

     The foregoing persons are hereinafter sometimes collectively referred to as
the "Reporting Persons". Any disclosures herein with respect to persons other
than the Reporting Persons are made on information and belief after making
inquiry to the appropriate party.

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

     The address of the business office of each of the Reporting Persons is 245
Park Avenue, New York, New York 10167.

Item 2(c).     Citizenship:

     ACP is a limited partnership organized under the laws of the State of
Delaware. ACS is a corporation organized under the laws of the State of
Delaware.

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

     Common stock, par value $0.0001 per share (the "Common Stock").





CUSIP No. 74347T103                13G                    Page 5 of 8 Pages

Item 2(e).     CUSIP Number:

     74347T103

Item 3. If this statement is filed pursuant to Rules 13d-1(b) or 13d-2(b) or
(c), check whether the person filing is a:

          (a) [ ]  Broker or dealer registered under Section 15 of the Act,

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

          (c) [ ]  Insurance Company as defined in Section 3(a)(19) of
                   the Act,

          (d) [ ]  Investment Company registered under Section 8 of the
                   Investment Company Act of 1940,

          (e) [ ]  Investment Adviser registered under Section 203 of the
                   Investment Advisers Act of 1940,

          (f) [ ]  Employee Benefit Plan or Endowment Fund in accordance
                   with 13d-1 (b)(1)(ii)(F),

          (g) [ ]  Parent Holding Company or control person in accordance
                   with Rule 13d-1 (b)(ii)(G),

          (h) [ ]  Savings Associations as defined in Section 3(b) of the
                   Federal Deposit Insurance Act,

          (i) [ ]  Church Plan that is excluded from the definition of an
                   investment company under Section 3(c)(14) of the Investment
                   Company Act of 1940,

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

     If this statement is filed pursuant to 13d-1(c), check this box: [x]


Item 4.   Ownership.

      A. Arrowgrass Capital Partners (US) LP
              (a) Amount beneficially owned: 1,719,300
              (b) Percent of class: 5.5%. The percentages used herein and in
                  the rest of Item 4 are calculated based upon the 31,250,000
                  shares of Common Stock issued and outstanding as of April
                  20, 2009 as reported in the Form 10-Q for the quarterly
                  period ended March 31, 2009 filed by the Company on May 11,
                  2009.
              (c)(i) Sole power to vote or direct the vote: -0-
                (ii) Shared power to vote or direct the vote: 1,719,300
               (iii) Sole power to dispose or direct the disposition: -0-
                (iv) Shared power to dispose or direct the disposition:
                      1,719,300





CUSIP No. 74347T103                13G                    Page 6 of 8 Pages

      B.   Arrowgrass Capital Services (US) Inc.
              (a) Amount beneficially owned: 1,719,300
              (b) Percent of class: 5.5%
              (c)(i) Sole power to vote or direct the vote: -0-
                (ii) Shared power to vote or direct the vote: 1,719,300
               (iii) Sole power to dispose or direct the disposition: -0-
                (iv) Shared power to dispose or direct the disposition:
                      1,719,300

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

     Not applicable.


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

     ACS serves as the general partner of ACP. As such, it has the power to
direct the affairs of ACP, including decisions with respect to the disposition
of the proceeds from the sale of the shares of Common Stock.


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

     Not applicable.


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

     Not applicable.


Item 9.     Notice of Dissolution of Group.

     Not applicable.


Item 10.    Certification.

     Each of the Reporting Persons hereby makes the following certification:

          By signing below each Reporting Person certifies that, to the best of
its 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.





CUSIP No. 74347T103                13G                    Page 7 of 8 Pages

SIGNATURES

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


DATED:  July 31, 2009

                                 Arrowgrass Capital Partners (US) LP

                                     By:  Arrowgrass Capital Services (US) Inc.,
                                          its General Partner

                                          /s/ Sean Flynn
                                          ------------------------------
                                          Name:  Sean Flynn
                                          Title: Director


                                 Arrowgrass Capital Services (US) Inc.

                                     /s/ Sean Flynn
                                     ------------------------------
                                     Name:  Sean Flynn
                                     Title: Director





CUSIP No. 74347T103                13G                    Page 8 of 8 Pages

                                    EXHIBIT 1

                           JOINT ACQUISITION STATEMENT
                            PURSUANT TO RULE 13d-1(k)


     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
acquisition 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 or it contained therein, but
shall not be responsible for the completeness and accuracy of the information
concerning the others, except to the extent that he or it knows or has reason to
believe that such information is inaccurate.


DATED:  July 31, 2009

                                 Arrowgrass Capital Partners (US) LP

                                     By:  Arrowgrass Capital Services (US) Inc.,
                                          its General Partner

                                          /s/ Sean Flynn
                                          ------------------------------
                                          Name:  Sean Flynn
                                          Title: Director


                                 Arrowgrass Capital Services (US) Inc.

                                     /s/ Sean Flynn
                                     ------------------------------
                                     Name:  Sean Flynn
                                     Title: Director