PIMCO ADVISORS HOLDINGS LP
8-K, 1999-11-01
INVESTORS, NEC
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<PAGE>

                      SECURITIES AND EXCHANGE COMMISSION


                            Washington, D.C. 20549

                                 _____________

                                   FORM 8-K

                                CURRENT REPORT

                    PURSUANT TO SECTION 13 OR 15(D) OF THE
                      SECURITIES AND EXCHANGE ACT OF 1934

                               October 31, 1999
               Date of Report (Date of earliest event reported)

                                 _____________

                         PIMCO ADVISORS HOLDINGS L.P.

            (Exact name of registrant as specified in its charter)

          Delaware                     001-9597                13-3412614
(State or other Jurisdiction       (Commission File          (IRS Employer
     of Incorporation)                  Number)          Identification Number)


     800 Newport Center Drive                                     92660
     Newport Beach, California                                 (Zip Code)
(Address of principal executive offices)


                                (949) 219-2200
             (Registrant's telephone number, including area code)

                                      N/A
         (Former Name or Former Address, if Changed Since Last Report)
<PAGE>

Item 5. Other Events.

     On October 31, 1999, PIMCO Advisors Holdings L.P. (the "Partnership")
entered into an Implementation and Merger Agreement by and among the
Partnership, Allianz of America Inc., a Delaware corporation, Pacific Asset
Management LLC, a Delaware limited liability company, PIMCO Advisors L.P., a
Delaware limited partnership, PIMCO Partners G.P., a California general
partnership, PIMCO Partners LLC, a California limited liability company,
PIMCO Holding LLC, a Delaware limited liability company and certain other
affiliated parties. The agreement is attached as Exhibit 2.1. hereto. On the
same date, the Partnership issued a press release regarding such agreement which
is attached as Exhibit 99.1 hereto.

Item 7(c). Exhibits.

   See Exhibit Index.

                                       2
<PAGE>

                                  SIGNATURES


     Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                        PIMCO Advisors Holdings L.P.


Date:  October 31, 1999                 By:     /s/   ROBERT FITZGERALD
                                                -------------------------
                                        Name:   Robert Fitzgerald
                                        Title:  Chief Financial Officer

                                       3
<PAGE>

EXHIBIT INDEX

2.1     Implementation and Merger Agreement dated as of October 31, 1999 by and
        among Allianz of America Inc., Pacific Asset Management LLC, PIMCO
        Advisors L.P., PIMCO Advisors Holdings L.P., PIMCO Partners G.P., PIMCO
        Partners LLC, PIMCO Holding LLC and certain other affiliated parties.

99.1    Press release dated October 31, 1999.

                                       4

<PAGE>

                                                                     Exhibit 2.1




================================================================================



                      IMPLEMENTATION AND MERGER AGREEMENT

                                    by and
                                     among

                           Allianz of America, Inc.,

                         Pacific Asset Management LLC,

                             PIMCO Advisors L.P.,

                         PIMCO Advisors Holdings L.P.,

                              PIMCO Partners LLC,

                              PIMCO Holding LLC,

                             PIMCO Partners G.P.,

                             and the Other Parties
                                 Named Herein



                         Dated as of October 31, 1999


================================================================================
<PAGE>

                               TABLE OF CONTENTS


<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
<S>                                                                         <C>
RECITALS...................................................................    1
A.     The Parties.........................................................    1
B.     The Transactions....................................................    2
C.     PIMCO MD Agreement..................................................    3
D.     Agreement of Merger.................................................    3

                                   ARTICLE I

                              Certain Definitions

1.01   Certain Definitions.................................................    3
1.02   Terms Generally.....................................................   20

                                   ARTICLE II

                                The Transactions

2.01   The Holdings LP Merger..............................................   20
2.02   The Acquisitions, Distributions and Contributions...................   24
2.03   The Advisors LP Merger..............................................   25
2.04   Treatment of Other Equity Interests.................................   27
2.05   Closing.............................................................   28
2.06   Organization of AZOA Subsidiaries...................................   28

                                  ARTICLE III

                         Representations and Warranties

3.01   Disclosure Schedules................................................   29
3.02   Standards...........................................................   29
3.03   Representations and Warranties of the Sellers.......................   30
3.04   Representations and Warranties of AZOA..............................   58

                                   ARTICLE IV

                                   Covenants

4.01   Conduct Prior to Closing............................................   61
</TABLE>

                                     -ii-
<PAGE>

<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
<S>                                                                         <C>
4.02   Acquisition Proposals...............................................   63
4.03   Retention and Bonus Programs........................................   64
4.04   Filings, Other Actions; Notification................................   64
4.05   Investment Company Matters..........................................   66
4.06   Advisory Agreements.................................................   67
4.07   Taxation............................................................   67
4.08   Access; Information.................................................   68
4.09   Publicity...........................................................   69
4.10   Effect of Investigations............................................   69
4.11   Takeover Statutes...................................................   69
4.12   Reasonable Best Efforts.............................................   70
4.13   Other Agreements....................................................   70
4.14   Organization of PacPartners.........................................   71
4.15   Disposition of Subsidiaries.........................................   71
4.16   Restructurings......................................................   71
4.17   Expenses............................................................   71
4.18   Subsidiary Action...................................................   71
4.19   Holdings LP Unitholder Approval.....................................   72
4.20   Proxy Statement.....................................................   72
4.21   Indemnification; Directors' and Officers' Insurance.................   73
4.22   Further Assurances..................................................   73

                                   ARTICLE V

                                   Conditions

5.01   Conditions to Each Party's Obligation to Effect the Transactions....   74
5.02   Conditions to Obligations of AZOA...................................   74
5.03   Conditions to Obligations of the Sellers............................   78

                                   ARTICLE VI

                                  Termination

6.01   Termination by Mutual Consent.......................................   78
6.02   Termination by Either AZOA or the Sellers...........................   78
6.03   Termination by AZOA.................................................   79
6.04   Termination by the Sellers..........................................   79
6.05   Effect of Termination and Abandonment...............................   80
6.06   Termination Fee.....................................................   80
</TABLE>

                                     -iii-
<PAGE>

<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
<S>                                                                         <C>
                                  ARTICLE VII

                           Miscellaneous and General

7.01   Survival............................................................   81
7.02   Waiver; Amendment...................................................   82
7.03   Governing Law and Venue; Waiver of Jury Trial.......................   82
7.04   Notices.............................................................   82
7.05   Entire Understanding; No Third Party Beneficiaries..................   84
7.06   Obligations of AZOA.................................................   84
7.07   Transfer Taxes......................................................   85
7.08   Interpretation......................................................   85
7.09   Assignment..........................................................   85
7.10   Counterparts........................................................   85
</TABLE>

                                    ANNEXES

Annex A     Acquisitions, Distributions and Contributions
Annex B     Disclosure Document List:  Financial Information and Assets Under
            Management
Annex C     Actions (Taxation)



                                    EXHIBITS

Exhibit A   Form of Amendment to Unit Incentive Plan
Exhibit B   Form of Allianz Guarantee
Exhibit C   Form of New Advisors LP Partnership Agreement
Exhibit D   Form of Supplement
Exhibit E   Terms of PIMCO Non-Qualified Profit Sharing Plan
Exhibit F   Terms of PIMCO Advisors LP Transition and Retention Plan
Exhibit G   Terms of PIMCO Advisors LP Retention Plan for Executives of Pacific
            Investment Management Company
Exhibit H   Terms of PIMCO Class B Unit Purchase Plan
Exhibit I   Form of Kenneth Poovey Employment Agreement
Exhibit J   Form of Other Advisors LP Executive Employment Agreements
Exhibit K   Terms of New Class B Units

                                     -iv-
<PAGE>

Exhibit L   Form of Continuing Investment Agreement
Exhibit M   Form of Indemnification Agreement
Exhibit N   Form of PIMCO LLC Agreement
Exhibit O   Terms of Written Consent of Advisors LP
Exhibit P   Form of Employment Agreement
Exhibit Q   Form of Amendment to Unit Option Agreements
Exhibit R   Form of Opinion of Latham & Watkins

                                      -v-

<PAGE>

     This IMPLEMENTATION AND MERGER AGREEMENT, dated as of October 31, 1999
(this "Agreement"), by and among Allianz of America, Inc., a corporation
       ---------
organized under the laws of Delaware, Pacific Asset Management LLC, a limited
liability company organized under the laws of Delaware, PIMCO Advisors L.P., a
limited partnership organized under the laws of Delaware, PIMCO Advisors
Holdings L.P., a limited partnership organized under the laws of Delaware, PIMCO
Partners G.P., a general partnership organized under the laws of California,
PIMCO Partners LLC, a limited liability company organized under the laws of
California, PIMCO Holding LLC, a limited liability company organized under the
laws of Delaware, and all of the other parties listed in Recital A hereof (each,
a "Party" and collectively, the "Parties").
   -----                         -------

                                   RECITALS

      A.  The Parties.  The Parties to this Agreement are as follows:
          -----------

          Advisors LP Merger Sub LLC is a limited liability company to be
     organized under the laws of Delaware and is referred to herein as "Advisors
                                                                        --------
     LP Merger Sub".
     -------------

          Allianz Asset Management Incorporated is a corporation organized under
     the laws of Delaware, is the sole member of Allianz GP Sub and is referred
     to herein as "Allianz Asset Management."
                   ------------------------

          Allianz GP Sub LLC is a limited liability company to be organized
     under the laws of Delaware, is the sole member of Advisors LP Merger Sub
     and Holdings LP General Partner is the sole limited partner of Holdings LP
     Merger Sub and is referred to herein as "Allianz GP Sub".
                                              --------------

          Allianz of America, Inc. is a corporation organized under the laws of
     Delaware, is the sole stockholder of Allianz Asset Management and is
     referred to herein as "AZOA".
                            ----

          Holdings LP General Partner LLC is a limited liability company to be
     organized under the laws of Delaware, is the sole general partner of
     Holdings LP Merger Sub and is referred to herein as "Holdings LP General
                                                          -------------------
     Partner."
     -------

          Holdings LP Merger Sub L.P. is a limited partnership to be organized
     under the laws of Delaware and is referred to herein as "Holdings LP Merger
                                                              ------------------
     Sub".
     ---
<PAGE>

          Pacific-Allianz Partners LLC is a limited liability company to be
     organized under the laws of Delaware and is referred to herein as
     "PacPartners LLC".
      ---------------

          Pacific Asset Management LLC is a limited liability company organized
     under the laws of Delaware, is the managing and sole member of Holding LLC,
     a limited partner of Advisors LP and the managing member of each of NFJ
     LLC, PPA LLC and CCM LLC, and will be at the Closing the sole stockholder
     of PacFin, and is referred to herein as "PacMan".
                                              ------

          Pacific Investment Management Company is a general partnership
     organized under the laws of Delaware and is a wholly-owned Subsidiary of
     Advisors LP and is referred to herein as "PIMCO".
                                               -----

          PIMCO Advisors Holdings L.P. is a limited partnership organized under
     the laws of Delaware, is a general partner of Advisors LP and is referred
     to herein as "Holdings LP".
                   -----------

          PIMCO Advisors L.P. is a limited partnership organized under the laws
     of Delaware, is a general partner of PIMCO and is referred to herein as
     "Advisors LP".
      -----------

          PIMCO Holding LLC is a limited liability company organized under the
     laws of Delaware, is a general partner of Partners GP and is referred to
     herein as "Holding LLC".
                -----------

          PIMCO Partners G.P. is a general partnership organized under the laws
     of California, is a general partner and a limited partner of Advisors LP
     and the sole general partner of Holdings LP and is referred to herein as
     "Partners GP".
      -----------

          PIMCO Partners LLC is a limited liability company organized under the
     laws of California, is the managing general partner of Partners GP and a
     limited partner of Advisors LP and is referred to herein as "Partners LLC".
                                                                  ------------

     B.   The Transactions.  The Parties desire and intend to engage in a series
          ----------------
of transactions, which will include (i) a merger of Holdings LP Merger Sub with
and into Holdings LP, (ii) a merger of Advisors LP Merger Sub with and into
Advisors LP and (ii) certain other related transactions as more fully set forth
in Annex A, all on the terms and conditions set forth herein.

                                      -2-
<PAGE>

     C.   PIMCO MD Agreement.  As a condition to and in furtherance of the
          ------------------
Transactions, each of the PIMCO MDs who is an ETA Holder has entered into the
PIMCO MD Agreement concurrently with the execution of this Agreement.

     D.   Agreement of Merger.  This Agreement constitutes an agreement of
          -------------------
merger within the meaning of Section 17-211 of the DE Partnership Law with
respect to each of the Holdings LP Merger and the Advisors LP Merger and within
the meaning of Section 18-209 of DE LLC Law with respect to the Advisors LP
Merger.

     NOW, THEREFORE, in consideration of the premises, and of the covenants,
representations, warranties and agreements contained herein and in the other
Transaction Documents, the Parties agree as follows:


                                   ARTICLE I

                              Certain Definitions

     1.01 Certain Definitions.  The following terms are used in this Agreement
          -------------------
with the meanings set forth below:

          "1994 Profit Sharing Plan" means the 1994 Non-Qualified Profit Sharing
           ------------------------
     Plan, effective November 16, 1994, adopted by PIMCO.

          "1998 Unit Incentive Plan" means the 1998 Unit Incentive Plan,
           ------------------------
     effective January 1, 1998, adopted by Holdings LP and Advisors LP.

          "12b-1 Plan" has the meaning set forth in Section 3.03(aa).
           ----------

          "Acquired Entities" has the meaning set forth in Section 4.07(a).
           -----------------

          "Acquisition Proposal" has the meaning set forth in Section 4.02.
           --------------------

          "Acquisitions, Distributions and Contributions" means, collectively,
           ---------------------------------------------
     the transactions contemplated by Annex A.

          "Adjusted Assets Under Management" has the meaning set forth in
           --------------------------------
     Section 2.01(d).

          "Advisors GP Units" means the general partner units of Advisors LP.
           -----------------

          "Advisors LP" has the meaning set forth in Recital A.
           -----------

                                      -3-
<PAGE>

          "Advisors LP Certificate of Merger" has the meaning set forth in
           ---------------------------------
     Section 2.03(b).

          "Advisors LP Excluded Unit" has the meaning set forth in Section
           -------------------------
     2.03(d).

          "Advisors LP Merger" has the meaning set forth in Section 2.03(a).
           ------------------

          "Advisors LP Merger Sub" has the meaning set forth in Recital A.
           ----------------------

          "Advisors LP Surviving Partnership" has the meaning set forth in
           ---------------------------------
     Section 2.03(a).

          "Advisors LP Units" means, collectively, the Class A Units, the Class
           -----------------
     C Units and the Class D Units.

          "Advisory Agreement" means, with respect to any Person, each Contract
           ------------------
     relating to its rendering of investment management, investment advisory,
     management, administration or any other services to a Client, including any
     sub-advisory or similar agreement.

          "Affiliate" means, with respect to any specified Person, any other
           ---------
     Person directly or indirectly controlling, controlled by or under common
     control with such specified Person.  For the purposes of this definition,
     "control", when used with respect to any specified Person, means the
      -------
     possession, directly or indirectly, of the power to direct or cause the
     direction of  the management and policies of such Person, whether through
     the ownership of Equity Interests, by Contract or otherwise; and the terms
     "controlling" and "controlled" have correlative meanings to the foregoing.
      -----------       ----------
     For purposes of the definition of "control", a general partner or managing
                                        -------
     member of a Person shall always be considered to control such Person.

          "Allianz" means Allianz AG, a German Aktiengesellschaft, the
           -------
     controlling shareholder of AZOA.

          "Allianz Asset Management" has the meaning set forth in Recital A.
           ------------------------

          "Allianz GP Sub" has the meaning set forth in Recital A.
           --------------

          "Allianz Guarantee" means the Guarantee entered into by AZOA and
           -----------------
     Allianz, substantially in the form attached hereto as Exhibit B.

          "Allianz Representatives" has the meaning set forth in Section
           -----------------------
     4.08(a).

                                      -4-
<PAGE>

          "Allianz Share Recipients" means William H. Gross, John L. Hague,
           ------------------------
     Brent R. Harris, James F. Muzzy, William C. Powers and William S. Thompson.

          "Allianz Shares" has the meaning specified in Annex A.
           --------------

          "Amendment to Unit Incentive Plan" means the Second Amendment to the
           --------------------------------
     1998 Unit Incentive Plan, substantially in the form attached hereto as
     Exhibit A, unless otherwise agreed by Advisors LP, Holdings LP and AZOA.

          "Applicable Law" means any domestic or foreign federal or state
           --------------
     statute, law, ordinance, rule, administrative interpretation, regulation,
     order, writ, injunction, directive, judgment, decree, policy, guideline or
     other requirement (including those of any Self-Regulatory Organization)
     applicable to any of the Parties or any of each of their respective
     Subsidiaries, properties or assets, as the case may be.

          "Audit Date" has the meaning set forth in Section 3.03(i).
           ----------

          "Authority" means any Governmental Authority or Self-Regulatory
           ---------
     Organization.

          "AZOA" has the meaning set forth in Recital A.
           ----

          "AZOA Unvested Deferred Payment Note" has the meaning set forth in
           -----------------------------------
     Section 2.04(b).

          "Bankruptcy and Equity Exception" has the meaning set forth in Section
           -------------------------------
     3.03(b).

          "Cadence Capital Management" means Cadence Capital Management, a
           --------------------------
     general partnership organized under the laws of Delaware.

          "Cadence LP" means Cadence Partners L.P., a limited partnership
           ----------
     organized under the laws of California.

          "Cadence Management" means Cadence Capital Management Inc., a
           ------------------
     corporation organized under the laws of Delaware and a wholly-owned
     subsidiary of Advisors LP.

          "California Uniform Partnership Act" means the Uniform Partnership Act
           ----------------------------------
     of the State of California.

                                      -5-
<PAGE>

          "CCM LLC" means CCM LLC, a limited liability company organized under
           -------
     the laws of Delaware, the sole general partner of Cadence LP and a limited
     partner of Advisors LP.

          "Class A Units" means the Class A limited partner units of Advisors
           -------------
     LP.

          "Class C Units" means the Class C limited partner units of Advisors
           -------------
     LP.

          "Class D Units" means the Class D limited partner units of Advisors
           -------------
     LP.

          "Client" means, with respect to any Person, each Investment Company
           ------
     and each other Person for which such Person or any of its Subsidiaries is a
     Service Provider.

          "Client Contracts" has the meaning set forth in Section 3.03(aa).
           ----------------

          "Closing" has the meaning set forth in Section 2.05.
           -------

          "Closing Date" has the meaning set forth in Section 2.05.
           ------------

          "Code" means the Internal Revenue Code of 1986, as amended.
           ----

          "Columbus Circle Trust Company" means Columbus Circle Trust Company, a
           -----------------------------
     Connecticut state-chartered trust company.

          "Compensation and Benefit Plan" means, with respect to any Person, any
           -----------------------------
     and all existing bonus, incentive, deferred compensation, pension,
     retirement, profit-sharing, thrift, savings, employee stock ownership,
     stock bonus, stock appreciation rights, stock purchase, restricted stock,
     stock option, severance, welfare and fringe benefit plans, including but
     not limited to "employee benefit plans" within the meaning of Section 3(3)
     of ERISA, and employment or severance agreements and all similar practices,
     policies and arrangements in which any employee, former employee,
     consultant, former consultant, director or former director, member or
     former member, stockholder or former stockholder, partner or former
     partner, of such Person or any of its Subsidiaries participates or to which
     any such employees, former employees, consultants, former consultants,
     directors, former directors, members, former members, stockholders, former
     stockholders, partners or former partners are parties or beneficiaries.

          "Compensation Deferral Account" has the meaning set forth in the
           -----------------------------
     Deferred Compensation Plan.

                                      -6-
<PAGE>

          "Consents" has the meaning set forth in Section 5.01(a).
           --------

          "Constituent Documents" means, with respect to any corporation, its
           ---------------------
     charter and by-laws; with respect to any partnership, its certificate of
     partnership and partnership agreement; with respect to any limited
     liability company, its certificate of formation and limited liability
     company or operating agreement; with respect to any trust, its declaration
     or agreement of trust; and with respect to each other Person, its
     comparable constitutional instruments or documents; together in each case,
     with all material consents and other instruments delegating authority
     pursuant to such Constituent Documents.

          "Continuing Investment Agreement" has the meaning set forth in Section
           -------------------------------
     4.13(b).

          "Contract" means, with respect to any Person, any agreement,
           --------
     indenture, undertaking, debt instrument, contract, guarantee, loan, note,
     mortgage, arrangement, license, lease or other commitment, whether oral or
     written, to which such Person or any of its Subsidiaries is a party or by
     which any of them is bound or to which any of their assets or properties is
     subject.

          "Controlled Affiliate" has the meaning set forth in Section 3.03(f).
           --------------------

          "D&O Insurance" has the meaning set forth in Section 4.21(b).
           -------------

          "DE LLC Law" means the Delaware Limited Liability Company Act, 6 Del.
           ----------                                                      ----
     C. (S) 18-101, et seq., as amended from time to time.
     --             -- ---

          "DE Partnership Law" means the Delaware Revised Uniform Limited
           ------------------
     Partnership Act, 6 Del. C. (S) 17-101, et seq., as amended from time to
                        -------             -- ---
     time.

          "Deferred Compensation Plan" means the Executive Deferred Compensation
           --------------------------
     Plan of Holdings LP and Advisors LP, effective as of December 1, 1996, and
     amended and restated as of January 1, 1998, adopted by Advisors LP.

          "Deferred Compensation Unit" means, at any time of determination, any
           --------------------------
     Class A Unit held by the Trustee under the Deferred Compensation Plan and
     credited to a Participant's Compensation Deferral Account with respect to
     which such Participant has not forfeited and otherwise retains his or her
     interest at such time.

          "Deferred Restricted Unit" means, at any time of determination, any
           ------------------------
     Class A Unit held by the Trustee under the Deferred Compensation Plan and

                                      -7-
<PAGE>

     credited to a Participant's Unit Award Deferral Account with respect to
     which such Participant has not forfeited and otherwise retains his or her
     interest at such time.

          "Deferred Restricted Unit Agreement" means each Deferred Restricted
           ----------------------------------
     Unit Agreement entered into pursuant to the terms of the 1998 Unit
     Incentive Plan.

          "Deferred Unit" means a Deferred Unit Award within the meaning of the
           -------------
     1998 Unit Incentive Plan.

          "Derivative Contract" means any exchange-traded, over-the-counter or
           -------------------
     other swap, cap, floor, collar, option agreement, futures or forward
     contract and each other similar arrangement or Contract.

          "Determination Date" has the meaning set forth in Section 2.01(d).
           ------------------

          "Disclosure Schedule" has the meaning set forth in Section 3.01.
           -------------------

          "Effective Time" has the meaning set forth in Section 2.03(b).
           --------------

          "Employment Agreement" has the meaning set forth in Section 5.02(e).
           --------------------

          "Encumbrance" means any lien, encumbrance, mortgage, restriction,
           -----------
     pledge, security interest, right of first refusal, claim or other
     encumbrance.

          "Environmental Law" means any federal, state, local or foreign
           -----------------
     statute, law, regulation, order, decree, permit, authorization, opinion,
     common law or agency requirement relating to (a) the protection,
     investigation or restoration of the environment, health, safety, or natural
     resources, (b) the handling, use, presence, disposal, release or threatened
     release of any Hazardous Substance or (c) noise, odor, indoor air, employee
     exposure, wetlands, pollution, contamination or any injury or threat of
     injury to persons or property relating to any Hazardous Substance.

          "Equity Interest" means, with respect to any Person, any share of
           ---------------
     capital stock of, general, limited or other partnership interest,
     membership interest or similar ownership interest under the laws of a
     jurisdiction outside the United States, in such Person.

          "ERISA" means the Employee Retirement Income Security Act of 1974, as
           -----
     amended.

                                      -8-
<PAGE>

          "ETA" means each of those certain employment termination and non-
           ---
     competition agreements Previously Disclosed.

          "ETA Amendment" has the meaning set forth in Section 4.13(a).
           -------------

          "ETA Holder" means any natural person who is a party to an ETA as
           ----------
     Previously Disclosed.

          "Exchange Act" means the Securities Exchange Act of 1934, as amended,
           ------------
     and the rules and regulations promulgated thereunder.

          "Excluded Holdings LP Unit" has the meaning set forth in Section 2.04.
           -------------------------

          "Federal Reserve" means the Board of Governors of the Federal Reserve
           ---------------
     System.

          "Fee Triggering Event" has the meaning set forth in Section 6.06(b).
           --------------------

          "GAAP" means generally accepted accounting principles in the United
           ----
     States of America as in effect at the time any applicable financial
     statements were prepared.

          "Governmental Authority" means any United States or foreign
           ----------------------
     government, any state or other political subdivision thereof, any entity
     exercising executive, legislative, judicial, regulatory or administrative
     functions of or pertaining to government, including the SEC, the securities
     commission or other authority of any state or foreign jurisdiction, the
     Federal Reserve or any other government authority, agency, department,
     board, commission or instrumentality of any such government, state or
     political subdivision thereof, and any court, tribunal or arbitrator(s) of
     competent jurisdiction, and any governmental organization, agency or
     authority.

          "Hazardous Substance" means any substance that is (a) listed,
           -------------------
     classified or regulated pursuant to any Environmental Law; (b) any
     petroleum product or by-product, asbestos-containing material, lead-
     containing paint or plumbing, polychlorinated biphenyls, radioactive
     material or radon; and (c) any other substance which may be the subject of
     regulatory action by any Government Authority in connection with any
     Environmental Law.

          "Holding LLC" has the meaning set forth in Recital A.
           -----------

          "Holding LLC ETA" means each ETA to which Holding LLC is a party.
           ---------------

                                      -9-
<PAGE>

          "Holdings LP" has the meaning set forth in Recital A.
           -----------

          "Holdings LP Certificate of Merger" has the meaning set forth in
           ---------------------------------
     Section 2.01(b).

          "Holdings LP Effective Time" has the meaning set forth in Section
           --------------------------
     2.01(d)(i).

          "Holdings LP General Partner" has the meaning set forth in Recital A.
           ---------------------------

          "Holdings LP GP Units" has the meaning set forth in Section 2.01(d).
           --------------------

          "Holdings LP Merger" has the meaning set forth in Section 2.01(a).
           ------------------

          "Holdings LP Merger Sub" has the meaning set forth in Recital A.
           ----------------------

          "Holdings LP Partnership Agreement" means the Amended and Restated
           ---------------------------------
     Agreement of Limited Partnership of PIMCO Advisors Holdings L.P., dated
     June 30, 1998.

          "Holdings LP Surviving Partnership" has the meaning set forth in
           ---------------------------------
     Section 2.01(a).

          "Holdings LP Unit" has the meaning set forth in Section 2.01(d).
           ----------------

          "Holdings LP Unitholders" has the meaning set forth in Section
           -----------------------
     2.01(a).

          "Holdings LP Unitholders Meeting" has the meaning set forth in Section
           -------------------------------
     4.19.

          "HSR Act" means the Hart-Scott-Rodino Antitrust Improvements Act of
           -------
     1976, as amended.

          "Indemnification Agreement" has the meaning set forth in Section
           -------------------------
     4.13(d).

          "Insurance Policies" has the meaning set forth in Section 3.03(y).
           ------------------

          "Intellectual Property" means (a) all trademarks, service marks, logos
           ---------------------
     and trade names together with all adaptations, derivations, and
     combinations thereof, and any applications, registrations, and renewals in
     connection therewith, (b)  all copyrights, and all applications,
     registrations, and renewals in connection therewith; in each case, in
     whatever form or medium.

                                      -10-
<PAGE>

          "Intellectual Property Rights" has the meaning set forth in Section
           ----------------------------
     3.03(w).

          "Investment Advisers Act" means the Investment Advisers Act of 1940,
           -----------------------
     as amended, and the rules and regulations promulgated thereunder.

          "Investment Company" means an investment company, as such term is
           ------------------
     defined in the Investment Company Act (including any entity that, although
     an investment company, is exempt from registration as an investment company
     under such Act).  When used herein without such a reference to a specified
     Person, "Investment Company" refers to any Investment Company for which
     Advisors LP or any Subsidiary of Advisors LP acts as a Service Provider.

          "Investment Company Act" means the Investment Company Act of 1940, as
           ----------------------
     amended, and the rules and regulations promulgated thereunder.

          "Investment Company Advisory Agreement" means any Advisory Agreement
           -------------------------------------
     to which an Investment Company is a party.

          "Investment Company Board" or "Board" means the board of directors or
           ------------------------      -----
     trustees (or Persons performing similar functions) of an Investment
     Company.

          "IRS" means the Internal Revenue Service, and any successor thereto.
           ---

          "Key Contracts" means, with respect to any Person, the following
           -------------
     Contracts of such Person or any Subsidiary, division or business of such
     Person:

               (A) any partnership, joint venture or other similar Contract
          other than that of a Non-Registered Investment Company;

               (B) any Contract relating to the acquisition or disposition of
          any business or operations (whether by merger, sale of stock, sale of
          assets, outsourcing or otherwise) of or by such Person since November
          15, 1994;

               (C) any indenture, mortgage, promissory note, loan, guarantee or
          other Contract for the borrowing of money or the deferred purchase
          price of property in excess of $10,000,000 (in either case, whether
          incurred, assumed, guaranteed or secured by any asset);

                                      -11-
<PAGE>

               (D) any Contract that creates future payment or purchase
          obligations of such Person for either (x) annual payments of
          $1,000,000 or more or (y) future aggregate payment obligations in
          excess of $5,000,000;

               (E) any Contract which constitutes a repurchase agreement,
          reverse repurchase agreement, swap, hedge or Derivative Contract of
          any type with respect to which such Person acts as a principal;

               (F) any Contract with any former or current general partner,
          managing member or managing director of such Person or any executive
          officer or director of Advisors LP or Holdings LP or any holder of
          five percent (5%) or more of the Equity Interests in such Person or,
          with respect to any Seller, with any Person in which, to the knowledge
          of such Seller, any of the foregoing Persons holds a controlling
          interest;

               (G) any Contract establishing or evidencing a Profit Interest in
          such Person;

               (H) any license, franchise or similar Contract material to its
          business and operations or any agreement relating to any Intellectual
          Property that is material to its assets or business; and

               (I) any Contract that limits the freedom of such Person or any of
          its Affiliates to compete in any line of business or with any Person
          or which involve any restriction of geographical area in which, or
          method by which it may carry on its business or that would so limit
          their freedom after the Closing Date;

excluding, in each case, (I) any agreement made with respect to Sponsored
- ---------
Investment Companies in the retail division of PIMCO in the ordinary course of
business, (II) any Contract between Advisors LP and its Subsidiaries or among
such Subsidiaries which evidence inter-company debt, advances or transfers,
(III) any arrangement by which commission or trail payments are made, (IV)
Compensation and Benefit Plans and (V) with respect to the Contracts listed in
clauses (A) through (H) only, any Constituent Documents and Advisory Agreements.

          "knowledge" means, with respect to any Person or its Subsidiaries, the
           ---------
     actual knowledge of its Chief Executive Officer, Chief Operating Officer,
     Chief Financial Officer, Chief Investment Officer or Chief Legal Officer
     (as applicable), after, in the case of any Seller, conduct by such Person
     of reasonable due inquiry of the Chief Executive Officer, Chief Operating
     Officer, Chief Financial Officer,

                                      -12-
<PAGE>

     Chief Investment Officer and Chief Legal Officer (as applicable) of each of
     its Subsidiaries.

          "Lease Agreements" has the meaning set forth in Section 3.03(m).
           ----------------

          "Long-Term Credit Agreement" means the Long-Term Credit Agreement,
           --------------------------
     dated as of May 12, 1998, among Advisors LP, NationsBank N.A., Deutsche
     Bank AG, New York Branch, Union Bank of California, N.A., Citibank, N.A.
     and the Banks as such term is defined therein.

          "Material Adverse Effect" means, with respect to any Person, any
           -----------------------
     effect that is material and adverse to the financial condition, assets,
     properties, management, business or results of operations of Holdings LP
     and its Subsidiaries taken as a whole or, with respect to AZOA, of AZOA and
     its Subsidiaries, taken as a whole; provided, that (i) any such effect
                                         --------
     which results from changes in securities markets shall be disregarded, and
     (ii) any such effect which includes a reduction in the Revenue Run-Rate
     shall be disregarded to the extent of such reduction as of the time of
     determination.

          "MD Representatives" means the members of the executive committee of
           ------------------
     PIMCO.

          "Merger Sub Class A Units" means the Class A limited partner units of
           ------------------------
     Advisors LP Merger Sub issued to Allianz GP Sub pursuant to Section
     2.03(d).

          "Merger Sub Class E Units" means the Class E limited partner units of
           ------------------------
     Advisors LP Merger Sub issued to PacMan pursuant to Section 2.03(d).

          "Merger Sub GP Unit" has the meaning set forth in Section 2.03(d).
           ------------------

          "NASD" means the National Association of Securities Dealers, Inc., and
           ----
     any successor thereto.

          "New Advisors LP Partnership Agreement" has the meaning set forth in
           -------------------------------------
     Section 2.03(c).

          "New Class A Units" has the meaning set forth in Section 2.03(d).
           -----------------

          "New Class B Units" has the meaning set forth in Section 2.03(d).
           -----------------

          "New Class E Units" has the meaning set forth in Section 2.03(d).
           -----------------

                                      -13-
<PAGE>

          "NFJ Investment Group" means NFJ Investment Group, a general
          ---------------------
     partnership organized under the laws of Delaware.

          "NFJ LLC" means NFJ LLC, a limited liability company organized under
           -------
     the laws of Delaware, the sole general partner of NFJ LP and a limited
     partner of Advisors LP.

          "NFJ LP" means NFJ Partners L.P., a limited partnership organized
           ------
     under the laws of California and a limited partner of Advisors LP.

          "NFJ Management" means NFJ Management Inc., a corporation organized
           --------------
     under the laws of Delaware and a wholly-owned subsidiary of Advisors LP.

          "Non-Registered Investment Company" means an Investment Company that
           ---------------------------------
     is not registered under the Investment Company Act.

          "Oppenheimer Capital" means Oppenheimer Capital, a general partnership
           -------------------
     organized under the laws of Delaware.

          "Option Modification Agreement" has the meaning set forth in Section
           -----------------------------
     5.02(h).

          "Order" has the meaning set forth in Section 5.01(c).
           -----

          "Owned Real Property" has the meaning set forth in Section 3.03(m).
           -------------------

          "PacFin" means Pacific Financial Products, Inc., a corporation
           ------
     organized under the laws of Delaware, a wholly-owned subsidiary of PacMan
     and a limited partner of Advisors LP.

          "PacLife" means Pacific Life Insurance Company, a stock life insurance
           -------
     company organized under the laws of California and the sole member of
     PacMan.

          "PacMan" has the meaning set forth in Recital A.
           ------

          "PacPartners LLC" has the meaning set forth in Recital A.
           ---------------

          "PacPartners LLC Agreement" has the meaning set forth in Section 4.14.
           -------------------------

          "PacPartners LLC Class A Units" means the Class A Units of PacPartners
           -----------------------------
     LLC.

                                      -14-
<PAGE>

          "PacPartners LLC Class B Units" means the Class B Units of PacPartners
           -----------------------------
     LLC.

          "Parametric LP" means Parametric Partners L.P., a limited partnership
           -------------
     organized under the laws of California and a limited partner of Advisors
     L.P.

          "Parametric Management" means Parametric Management Inc., a
           ---------------------
     corporation organized under the laws of Delaware and a wholly-owned
     subsidiary of Advisors LP.

          "Parametric Portfolio Associates" means Parametric Portfolio
           -------------------------------
     Associates, a general partnership organized under the laws of Delaware.

          "Participant" means any Person who is a "Participant" in the Deferred
           -----------
     Compensation Plan within the meaning of the Deferred Compensation Plan.

          "Partners GP" has the meaning set forth in Recital A.
           -----------

          "Partners LLC" has the meaning set forth in Recital A.
           ------------

          "Paying Agent" has the meaning set forth in Section 2.01(f).
           ------------

          "Pension Plan" means an "employee pension benefit plan" within the
           ------------
     meaning of Section 3(2) of ERISA.

          "Person" means any individual, bank, corporation, company, partnership
           ------
     (limited or general), limited liability company, association, joint
     venture, trust, stock insurance company, unincorporated organization or
     other entity or similar contractual arrangement or relationship.

          "PIMCO" has the meaning set forth in Recital A.
           -----

          "PIMCO Class B Unit Purchase Plan" has the meaning set forth in
           --------------------------------
     Section 4.03.

          "PIMCO Equity Advisors" means PIMCO Equity Advisors, a division of
           ---------------------
     Advisors LP.

          "PIMCO LLC Agreement" has the meaning set forth in Section 4.13(d).
           -------------------

                                      -15-
<PAGE>

          "PIMCO Management" means PIMCO Management Inc., a corporation formed
           ----------------
     under the laws of Delaware and a wholly-owned subsidiary of Advisors LP.

          "PIMCO MD" means each of William R. Benz, Robert Wesley Burns, Chris
           --------
     P. Dialynas, William H. Gross, John L. Hague, Brent R. Harris, Margaret E.
     Isberg, Dean S. Meiling, James F. Muzzy, William F. Podlich, III, William
     C. Powers, Lee R. Thomas, William S. Thompson and Benjamin L. Trosky.

          "PIMCO MD Agreement" means the Managing Director Agreement entered
           ------------------
     into as of the date hereof among all of the PIMCO MDs who are ETA Holders,
     Allianz Asset Management, Advisors LP, PIMCO and AZOA.

          "PIMCO Non-Qualified Profit Sharing Plan" has the meaning set forth in
           ---------------------------------------
     Section 4.03.

          "PIMCO Trust Company" means PIMCO Trust Company, a trust company
           -------------------
     formed under the laws of New York.

          "PIMCO Written Consent" has the meaning set forth in Section 4.13.
           ---------------------

          "PPA LLC" means PPA LLC, a limited liability company organized under
           -------
     the laws of Delaware, is the sole general partner of Parametric LP.

          "PPGP Note Agreement" means the Amended and Restated Note Agreement,
           -------------------
     dated as of September 26, 1997, between Partners GP and each of the
     Noteholders as such term is defined therein, as amended as of October 31,
     1997.

          "Previously Disclosed" by a Party or Parties means information set
           --------------------
     forth in its or their Disclosure Schedule.

          "Profit Interest" means, with respect to any Person, any right
           ---------------
     (whether represented by a security or other instrument or Contract)
     directly or indirectly to participate in the revenues, profits or losses,
     realized or unrealized gains or liquidation value of, such Person or any
     Subsidiary, division or business of such Person, but excluding, in each
                                                      --- ---------
     case, any Contract for trail payments, commissions, or fee-based
     compensation entered into in the ordinary course of business of such Person
     or any Subsidiary, division or business of such Person and any ETA, Equity
     Interest, or Compensation and Benefit Plan.

          "Proxy Statement" has the meaning set forth in Section 4.19.
           ---------------

          "PTE 84-14" has the meaning set forth in Section 3.04(i).
           ---------

                                      -16-
<PAGE>

          "Registered Investment Company" means an Investment Company registered
           -----------------------------
     under the Investment Company Act.

          "Retention Plan" has the meaning set forth in Section 4.03.
           --------------

          "Revenue Run-Rate" has the meaning set forth in Section 2.01(d).
           ----------------

          "SEC" means the Securities and Exchange Commission, and any successor
           ---
     thereto.

          "SEC Reports" has the meaning set forth in Section 3.03(i).
           -----------

          "Securities Act" means the Securities Act of 1933, as amended, and the
           --------------
     rules and regulations promulgated thereunder.

          "Securities Laws" means the Securities Act, the Exchange Act, the
           ---------------
     Investment Company Act, the Advisors Act and the state "blue sky" laws, and
     the rules and regulations promulgated thereunder.

          "Self-Regulatory Organization" means the NASD, the MSRB, the National
           ----------------------------
     Futures Association, each national securities exchange in the United States
     and each or other commission, board, agency or body, whether United States
     or foreign, that is charged with the supervision or regulation of brokers,
     dealers, securities underwriting or trading, stock exchanges, commodities
     exchanges, insurance companies or agents, investment companies or
     investment advisers, or to the jurisdiction of which it is otherwise
     subject.

          "Sellers" means, collectively, Advisors LP, Holdings LP, PacMan,
           -------
     Partners GP, Partners LLC and Holding LLC.

          "Service Provider" means any Person who acts as investment manager,
           ----------------
     administrator, general partner, managing member or similar controlling
     Person, investment advisor, subadviser or distributor or provider of other
     services.

          "Shortfall Ratio" has the meaning set forth in Section 2.03(d)(i).
           ---------------

          "Short-Term Credit Agreement" means the Short-Term Credit Agreement,
           ---------------------------
     dated as of May 12, 1998, as amended as of May 11, 1999, among Advisors LP,
     NationsBank N.A., Deutsche Bank AG, New York Branch, Union Bank of
     California, N.A., Citibank, N.A. and the Banks as such term is defined
     therein.

                                      -17-
<PAGE>

          "Sponsored" means, with respect to any Investment Company, an
           ---------
     Investment Company which has a majority of its officers who are employees
     of Advisors LP or any of its Subsidiaries or of which Advisors LP or any of
     its Subsidiaries holds itself out as the "Sponsor".

          "Subsidiary" of any Person (the "subject Person") means any Person,
           ----------
     whether incorporated or unincorporated, of which (i) at least fifty percent
     (50%) of the securities or ownership interests having by their terms
     ordinary voting power to elect a majority of the board of directors or
     managers or other Persons performing similar functions, (ii) a general
     partner interest or (iii) a managing membership interest, is directly or
     indirectly owned or controlled by the subject Person or by one or more of
     its respective Subsidiaries; provided, however, that the term Subsidiary
                                  --------  -------
     shall not apply to any Sponsored Non-Registered Investment Company.

          "Superior Proposal" has the meaning set forth in Section 4.02.
           -----------------

          "Supplement" has the meaning set forth in Section 2.06.
           ----------

          "Takeover Statute" means any "fair price," "moratorium," "control
           ----------------
     share acquisition" or other similar anti-takeover statute or regulation.

          "Tax" and "Taxes" means any and all federal, state, local or foreign
           ---       -----
     taxes, charges, fees, levies or other assessments, however denominated,
     including, without limitation, all net income, gross income, gross
     receipts, gains, sales, use, ad valorem, goods and services, capital,
     production, transfer, franchise, windfall profits, license, withholding,
     payroll, employment, disability, employer health, excise, estimated,
     severance, stamp, occupation, property, environmental, unemployment or
     other taxes, custom duties, fees, assessments or charges of any kind
     whatsoever, together with any interest and any penalties, additions to tax
     or additional amounts imposed by any taxing authority whether arising
     before, on or after the Closing Date.

          "Tax Returns" means any return, amended return or other report
           -----------
     (including, without limitations elections, declarations, disclosures,
     schedules, estimates and information returns) required to be filed with
     respect to any Tax.

          "Termination Date" has the meaning set forth in Section 6.02.
           ----------------

          "Termination Fee" has the meaning set forth in Section 6.06(a).
           ---------------

          "Termination Notice" has the meaning set forth in Section 6.03(b).
           ------------------

                                      -18-
<PAGE>

          "Terminating Sellers" has the meaning set forth in Section 6.04.
           -------------------

          "Third-Party Intellectual Property Rights" has the meaning set forth
           ----------------------------------------
     in Section 3.03(w).

          "Transaction Documents" means this Agreement, the Continuing
           ---------------------
     Investment Agreement, the Indemnification Agreement, the Option
     Modification Agreement, the ETA Amendments, each Supplement, the PIMCO MD
     Agreement, the PIMCO LLC Agreement, the New Advisors LP Partnership
     Agreement, the PacPartners LLC Agreement, the AZOA Unvested Deferred
     Payment Note, the Deferred Compensation Plan Amendment, the Employment
     Agreements, the PIMCO Non-Qualified Profit Sharing Plan, the PIMCO Class B
     Unit Purchase Plan, the Transition Retention Plan, the Retention Plan, the
     Allianz Guarantee, the Letter Agreement, dated October 31, 1999, from AZOA
     to PIMCO, relating to the delegation to be effected by the PIMCO Written
     Consent and any other Contract which Partners LLC, AZOA and PacMan may
     agree in writing shall be a Transaction Document.

          "Transactions" means, collectively, the Advisors LP Merger, the
           ------------
     Holdings LP Merger, the Acquisitions, Distributions and Contributions, and
     each other transaction contemplated by Sections 4.13, 4.14 and 4.19 of this
     Agreement.

          "Transition Retention Plan" has the meaning set forth in Section 4.03.
           -------------------------

          "Trustee" means US Trust, as Trustee under the rabbi trust established
           -------
     by Advisors LP and the other Participating Employees under a trust dated as
     of December 1, 1996 for purposes of the Deferred Compensation Plan.

          "Unit Award Deferral Account" has the meaning set forth in the
           ---------------------------
     Deferred Compensation Plan.

          "Unit Option" means an option to purchase units awarded under the 1998
           -----------
     Unit Incentive Plan.

          "Unit Option Agreement" has the meaning set forth in the 1998 Unit
           ---------------------
     Incentive Plan.

          "Unit Price" has the meaning set forth in Section 2.01(d).
           ----------

          "Written Consent" means, with respect to a specified Person, the
           ---------------
     written consent of the board of directors, members, managing members,
     general partners,

                                      -19-
<PAGE>

     or other governing body or group of Persons given under authority of such
     specified Person's Constituent Documents.

           "Y2K Compliant" has the meaning set forth in Section 3.03(z).
            -------------

     1.02 Terms Generally.  For all purposes of this Agreement, except as
           ---------------
otherwise expressly provided or unless the context otherwise requires:

           (a) the terms defined in this Agreement include both the plural and
     the singular;

           (b) the words "herein," "hereof" and "hereunder" and other words of
     similar import refer to this Agreement as a whole and not to any particular
     Article, Section or other subdivision;

           (c) the words "including" and "include" and other words of similar
     import shall be deemed to be followed by the phrase "without limitation";
     and

           (d) the term "reasonable best efforts" of any Party with respect to
     any specified action or result shall mean efforts that a reasonable Person
     would make to take such action or accomplish such result in light of the
     present intentions of such Party with respect to the Transactions and the
     benefits to be obtained by such Party upon the consummation of the
     transactions contemplated by the Transaction Documents.


                                  ARTICLE II

                               The Transactions

     2.01 The Holdings LP Merger.
           ----------------------

           (a) The Holdings LP Merger.  Upon the terms and subject to the
               ----------------------
     conditions set forth in this Agreement, at the Holdings LP Effective Time,
     Holdings LP Merger Sub shall be merged with and into Holdings LP and the
     separate partnership existence of Holdings LP Merger Sub shall thereupon
     cease (the "Holdings LP Merger").  Holdings LP shall be the surviving
                 ------------------
     entity in the Holdings LP Merger (sometimes hereinafter referred to as the
     "Holdings LP Surviving Partnership"), and the separate partnership
      ---------------------------------
     existence of Holdings LP, with all its rights, privileges, immunities,
     powers and franchises, shall continue unaffected by the Holdings LP Merger,
     except as set forth in Section 2.01(c).  The

                                      -20-
<PAGE>

     Holdings LP Merger shall have the effects specified in Section 17-211(h) of
     the DE Partnership Law.

          (b)  Holdings LP Effective Time.  On the Closing Date, immediately
               --------------------------
     following the satisfaction of all the conditions set forth in Article V,
     Holdings LP and Holdings LP Merger Sub shall cause a Certificate of Merger
     (the "Holdings LP Certificate of Merger") to be executed, acknowledged and
           ---------------------------------
     filed with the Secretary of State of Delaware as provided in Section 17-
     211(c) of the DE Partnership Law.  The Holdings LP Merger shall become
     effective at the time specified in the Holdings LP Certificate of Merger
     (the "Holdings LP Effective Time").
           --------------------------

          (c)  The Holdings LP Surviving Partnership Agreement.  Effective as of
               -----------------------------------------------
     the Holdings LP Effective Time, the Holdings LP Partnership Agreement shall
     be amended and restated in its entirety and a new partnership agreement
     shall be adopted which limited partnership agreement shall be in a form to
     be determined by AZOA or Holdings LP General Partner prior to the Closing.

          (d)  Effect on Partnership Interests.  At the Holdings LP Effective
               -------------------------------
     Time, as a result of the Holdings LP Merger and without any action on the
     part of the holders of any partnership interest in Holdings LP:

               (i)  Holdings LP Merger Consideration.  Each unit of limited
                    --------------------------------
          partnership interest of Holdings LP issued and outstanding immediately
          prior to the Holdings LP Effective Time (a "Holdings LP Unit"), shall
                                                      ----------------
          be converted into the right to receive, without interest, an amount in
          cash equal to $38.75 (such amount, as it may be adjusted in accordance
          with this Section 2.01(d)(i), the "Unit Price"), provided, that in the
                                             ----------    --------
          event that the Revenue Run-Rate as of the most recent calendar month-
          end prior to the Closing Date (the "Determination Date") is less than
                                              ------------------
          85% of the Revenue Run-Rate as of September 30, 1999 ($780,837,226),
          then the Unit Price shall be reduced by an amount equal to the Unit
          Price multiplied by the Shortfall Ratio; provided, further, that the
                                                   --------  -------
          Unit Price as so adjusted shall not be less than $31.00.  The
          "Shortfall Ratio" shall be equal to:
          ----------------


                         Revenue Run - Rate as of the Determination Date
             2 x  .85 -  -----------------------------------------------
                                        $780,837,226

                                      -21-
<PAGE>

          All such Holdings LP Units, by virtue of the Holdings LP Merger and
          without any action on the part of the holders thereof, shall no longer
          be outstanding and shall be canceled and retired and shall cease to
          exist, and each holder of a certificate representing any such Holdings
          LP Units shall thereafter cease to have any rights with respect to
          such Holdings LP Units, except the right to receive the Unit Price for
          each Holdings LP Unit upon the surrender of such certificate in
          accordance with Section 2.01(f).

          "Revenue Run-Rate" shall mean, on any date, the aggregate annualized
           ----------------
          investment advisory and subadvisory fees for all accounts managed by
          Advisors LP and its Subsidiaries, determined by multiplying the
          Adjusted Assets Under Management for each such account by the
          applicable annual fee rate for such account at such date (excluding
          any performance-based fees). The calculation of the Revenue Run-Rate
          as of the Determination Date shall be made using substantially the
          same methodology as the calculation of the Revenue Run-Rate as of
          September 30, 1999, as Previously Disclosed.

          "Adjusted Assets Under Management" shall mean for any account at a
           --------------------------------
          particular date, the amount of assets under management by Advisors LP
          or its Subsidiaries in that account at September 30, 1999, as adjusted
          for net cash flows (additions, withdrawals and reinvestments), new
          accounts and terminated accounts from and after September 30, 1999;
          provided however, that assets shall be treated as withdrawn at the
          -------- -------
          date Advisors LP or any of its Subsidiaries receives a written notice
          communicating an intention to withdraw such assets (unless such notice
          has been revoked) or, in the case of a Registered Investment Company,
          the shareholders of such Registered Investment Company shall have
          failed to approve the transfer of an Advisory Agreement at such
          particular date.

               (ii) Holdings LP GP Units.  Each general partnership unit in
                    --------------------
          Holdings LP issued and outstanding immediately prior to the Holdings
          LP Effective Time ("Holdings LP GP Units") shall be converted into the
                              --------------------
          right to receive the Unit Price.

          (e) Holdings LP Merger Sub.  At the Holdings LP Effective Time, each
              ----------------------
     limited partnership interest in Holdings LP Merger Sub issued and
     outstanding immediately prior to the Holdings LP Effective Time shall be
     converted into and become exchangeable for one Holdings LP Unit and each
     general partner interest in Holdings LP Merger Sub issued and outstanding
     immediately prior to the Holdings LP Effective Time shall be converted into
     one general partner interest in Holdings LP Surviving Partnership.

                                      -22-
<PAGE>

          (f)  Payment for Holdings LP Units.
               -----------------------------

               (i) Paying Agent.  As of the Holdings LP Effective Time, Holdings
                   ------------
          LP Surviving Partnership shall deposit, or shall cause to be
          deposited, with a paying agent selected by Holdings LP with AZOA's
          prior approval, which approval shall not be unreasonably withheld (the
          "Paying Agent"), amounts sufficient in the aggregate to provide all
           ------------
          funds necessary for the Paying Agent to make payments pursuant to
          Section 2.01(d)(i) to holders of Holdings LP Units issued and
          outstanding immediately prior to the Holdings LP Effective Time
          ("Holdings LP Unitholders").
            -----------------------

               (ii) Payment Procedures.  Promptly after the Holdings LP
                    ------------------
          Effective Time, Holdings LP Surviving Partnership shall cause to be
          mailed to each Person who was, at the Holdings LP Effective Time, a
          holder of record of issued and outstanding Holdings LP Units (i) a
          letter of transmittal specifying that delivery shall be effected, and
          the risk of loss and title to each certificate representing Holdings
          LP Units shall pass, only upon delivery of such certificate (or
          affidavits of loss in lieu thereof) to the Paying Agent, such letter
          of transmittal to be in such form and have such other provisions as
          AZOA and Holdings LP may reasonably agree, and (ii) instructions for
          use in effecting the surrender of such certificates. Upon surrender to
          the Paying Agent of any such certificate, together with such letter of
          transmittal, duly executed and completed in accordance with the
          instructions thereto, Holdings LP Surviving Partnership shall promptly
          cause to be paid to the Person(s) entitled thereto, by check, the
          amount to which such Person(s) are entitled pursuant to Section
          2.01(d)(i), after giving effect to any required tax withholding. No
          interest will be paid or will accrue on the amount payable upon the
          surrender of any such certificate. If payment is to be made to a
          Person other than the registered holder of a certificate surrendered,
          it shall be a condition of such payment that the certificate so
          surrendered shall be properly endorsed or otherwise in proper form for
          transfer and that the Person requesting such payment shall pay any
          transfer or other taxes required by reason of the payment to a Person
          other than the registered holder of the certificate surrendered or
          establish to the satisfaction of Holdings LP Surviving Partnership or
          the Paying Agent that such tax has been paid or is not applicable.

               (iii)  Transfers.  After the Holdings LP Effective Time, there
                      ---------
          shall be no transfers on the books and records of Holdings LP of the
          Holdings LP Units that were outstanding immediately prior to the
          Holdings LP Effective Time.

                                      -23-
<PAGE>

               (iv) Termination of Payment Fund.  Three hundred and sixty five
                    ---------------------------
          (365) days following the Holdings LP Effective Time, Holdings LP
          Surviving Partnership or its successor shall be entitled to cause the
          Paying Agent to deliver to it any funds (including any interest
          received with respect thereto) made available to the Paying Agent
          which have not been disbursed to Holdings LP Unitholders at the
          Holdings LP Effective Time, and thereafter such holders shall be
          entitled to look to Holdings LP Surviving Partnership only as general
          creditors thereof with respect to the cash payable upon due surrender
          of such certificates.  Notwithstanding the foregoing, neither the
          Paying Agent nor any party hereto shall be liable to any holder of
          such certificates for any amount paid to a public official pursuant to
          any applicable abandoned property, escheat or similar law. Holdings LP
          Surviving Partnership shall pay all charges and expenses, including
          those of the Paying Agent, in connection with the payment of cash in
          exchange for Holdings LP Units.

               (v) Lost, Stolen or Destroyed Holdings LP Certificates.  In the
                   --------------------------------------------------
          event any certificate representing Holdings LP Units shall have been
          lost, stolen or destroyed, upon the making of an affidavit of that
          fact by the Person claiming such certificate to be lost, stolen or
          destroyed and, if required by Holdings LP, the posting by such Person
          of a bond in customary amount as indemnity against any claim that may
          be made against it with respect to such certificate, the Paying Agent
          will pay in exchange for such lost, stolen or destroyed certificate
          the merger consideration due to such holder pursuant to Section
          2.01(d)(i) upon due surrender of the Holdings LP Units represented by
          such certificate.

          (g) Dissenters' or Appraisal Rights.  Holdings LP Unitholders shall
              -------------------------------
     not be entitled to any dissenters' rights or rights of appraisal with
     respect to such holders' Holdings LP Units.

          (h) Adjustments to Prevent Dilution.  In the event that Holdings LP
              -------------------------------
     changes the number of Holdings LP Units or Holdings GP Units issued and
     outstanding prior to the Holdings LP Effective Time, by means of a unit
     split, recapitalization, unit consolidation or similar transaction, the
     Unit Price shall be appropriately adjusted.

     2.02 The Acquisitions, Distributions and Contributions.  Upon the terms and
          -------------------------------------------------
subject to the conditions of this Agreement, at the Closing, immediately prior
to the Effective Time, the Parties will take all actions required to consummate
the transactions contemplated in Annex A to this Agreement, in the order set
forth therein.

                                      -24-
<PAGE>

     2.03 The Advisors LP Merger.
          ----------------------

          (a) The Advisors LP Merger.  Upon the terms and subject to the
              ----------------------
     conditions set forth in this Agreement, at the Effective Time, Advisors LP
     Merger Sub shall be merged with and into Advisors LP and the separate
     limited liability company existence of Advisors LP Merger Sub shall
     thereupon cease (the "Advisors LP Merger").  Advisors LP shall be the
                           ------------------
     surviving entity in the Advisors LP Merger (sometimes hereinafter referred
     to as the "Advisors LP Surviving Partnership"), and the separate
                ---------------------------------
     partnership existence of Advisors LP, with all its rights, privileges,
     immunities, powers and franchises, shall continue unaffected by the
     Advisors LP Merger, except as set forth in Section 2.02(c).  The Advisors
     LP Merger shall have the effects specified in Section 17-211(h) of the DE
     Partnership Law and Section 18-209(g) of the DE LLC Law.

          (b) Effective Time.  Immediately following the consummation of all of
              --------------
     the transactions contemplated by Sections 2.01 and 2.02, Advisors LP and
     Advisors LP Merger Sub will cause a Certificate of Merger (the "Advisors LP
                                                                     -----------
     Certificate of Merger") to be executed, acknowledged and filed with the
     ---------------------
     Secretary of State of Delaware as provided in Section 17-211(c) of the DE
     Partnership Law and Section 18-209(c) of the DE LLC Law.  The Advisors LP
     Merger shall become effective at the time specified in the Advisors LP
     Certificate of Merger (the "Effective Time"), provided, however, that the
                                 --------------    --------  -------
     Advisors LP Merger shall not become effective and the provisions of this
     Section 2.03 shall have no effect unless the Holdings LP Merger shall have
     become effective prior thereto.

          (c) The Advisors LP Surviving Partnership Agreement.  Effective as of
              -----------------------------------------------
     the Effective Time, the Advisors LP Limited Partnership Agreement shall be
     amended and restated substantially in the form attached hereto as Exhibit
     C, with such further amendments and modifications as PacMan and AZOA may
     agree prior to the Effective Time (the "New Advisors LP Partnership
                                             ---------------------------
     Agreement") and such New Advisors LP Partnership Agreement shall be the
     ---------
     partnership agreement of Advisors LP Surviving Partnership, until duly
     amended as provided therein or by Applicable Law.  Effective as of the
     Effective Time, PacPartners shall be admitted as the general partner of the
     Advisors LP Surviving Partnership.

          (d) Effect on Partnership Interests.  At the Effective Time, as a
              -------------------------------
     result of the Advisors LP Merger and without any action on the part of the
     holders of any partnership interest in Advisors LP or Advisors LP Merger
     Sub:

               (i) Advisors LP Merger Consideration.  (A) Class A Units. Each
                   --------------------------------       -------------
          Class A Unit (including each Advisors GP Unit) issued and outstanding
          immediately prior to the Effective Time (other than each Class

                                      -25-
<PAGE>

          A Unit held by Advisors LP Merger Sub or Partners GP, if any (an
          "Advisors LP Excluded Unit"), shall be converted into the right to
           -------------------------
          receive, without interest, an amount in cash equal to the Unit Price.

               (B) Class C Units and Class D Units.  Each Class C Unit and Class
                   -------------------------------
          D Unit issued and outstanding immediately prior to the Effective Time
          shall remain outstanding and unaffected by the Advisors LP Merger.

               (ii) Conversion of Advisors LP Merger Sub Units.
                    ------------------------------------------

               (A) Each Merger Sub Class A Unit issued and outstanding
                   immediately prior to the Effective Time shall be converted
                   into and become exchangeable for one new Class A Unit of
                   Advisors LP ("New Class A Unit").
                                 ----------------

               (B) Each Merger Sub Class E Unit issued and outstanding
                   immediately prior to the Effective Time shall be converted
                   into and become exchangeable for one new Class E Unit of
                   Advisors LP ("New Class E Unit").
                                 ----------------

               (C) Each general partner unit of Advisors LP Merger Sub ("Merger
                                                                         ------
                   Sub GP Unit") held by PacPartners immediately prior to the
                   -----------
                   Effective Time shall be converted into one new Advisors GP
                   Unit.

               (D) Excluded Units.  Each Class A Unit issued and outstanding
                   --------------
                   immediately prior to the Effective Time and held of record by
                   Partners GP, if any, shall be converted into and become
                   exchangeable for one new Class B Unit of Advisors LP (a "New
                                                                            ---
                   Class B Unit").  Each Class A Unit issued and outstanding
                   ------------
                   immediately prior to the Effective Time and held by Advisors
                   LP Merger Sub shall be cancelled.

          (e)  Cancellation of Units. All Class A Units outstanding immediately
               ---------------------
     prior to the Advisors LP Merger (other than the Advisors LP Excluded
     Units), by virtue of the Advisors LP Merger and without any action on the
     part of the holders thereof, shall no longer be outstanding and shall be
     canceled and retired and shall cease to exist, and each holder of a
     certificate representing any such units shall thereafter cease to have any
     rights with respect to such units, except the right to receive the Unit
     Price provided in Section 2.03(d)(i) for each Class A Unit or Advisors GP
     Unit, as the case may be, upon the surrender of such certificate in
     accordance with Section 2.03(f).

                                      -26-
<PAGE>

          (f) Payment and Exchange Procedures.  Upon surrender of a certificate
              -------------------------------
     formerly representing any Class A Units at the Closing, Advisors LP shall
     pay to the holder of any such certificate formerly representing Class A
     Units converted in accordance with Section 2.03(d)(ii) the cash that such
     holder is entitled to receive in accordance with this Section 2.03, by wire
     transfer of immediately available funds to an account to be designated by
     each such holder by written notice to Advisors LP at least five business
     days prior to the Effective Time, or, if no such notice is so delivered, by
     check to be delivered by registered mail to the address shown on the books
     and records of Advisors LP as the address of the record holder of such
     Class A Units.

          (g) Transfers.  After the Effective Time, there shall be no transfers
              ---------
     on the books and records of Advisors LP of the Advisors LP Units or
     Advisors GP Units that were outstanding immediately prior to the Effective
     Time.

          (h) Dissenters' or Appraisal Rights.  Holders of Advisors LP Units and
              -------------------------------
     Advisors GP Units shall not be entitled to any dissenters' rights or rights
     of appraisal with respect to such holders' Advisors LP Units or Advisors GP
     Units, as the case may be.

          (i) Adjustments to Prevent Dilution.  In the event that Advisors LP
              -------------------------------
     changes the number of any class of Advisors LP Units or Advisors GP Units,
     as the case may be, issued and outstanding prior to the Effective Time, by
     means of a unit split, recapitalization, unit consolidation or similar
     transaction, the Unit Price shall be appropriately adjusted.

      2.04 Treatment of Other Equity Interests.
           -----------------------------------

           (a) Unit Options and Deferred Units.
               -------------------------------

               (i) Option Cancellation.  In accordance with the provisions of
                   -------------------
           the Amended Unit Incentive Plan, at the Effective Time, each Unit
           Option then outstanding shall, whether or not then exercisable, be
           canceled and each Unit Option Agreement evidencing such Unit Option
           shall no longer have any force or effect, and the holder of such Unit
           Option shall have the right to receive the consideration therefor
           provided in the Amendment to the Unit Incentive Plan.

               (ii) Deferred Units.  In accordance with the provisions of the
                    --------------
           Amended Unit Incentive Plan, at the Effective Time, each Deferred
           Unit shall thereafter represent the rights set forth in the Amendment
           to the Unit Incentive Plan.

                                      -27-
<PAGE>

           (b) Advisors LP Deferred Compensation Plan.
               --------------------------------------

               (i) Deferred Compensation Units and Vested Deferred Restricted
                   ----------------------------------------------------------
           Units. At the Effective Time, the Deferred Compensation Units and the
           -----
           Deferred Restricted Units then vested shall be converted into an
           amount of cash, delivered by AZOA to the Trustee, equal to the Unit
           Price multiplied by the number of Deferred Compensation Units and
           vested Deferred Restricted Units in the Deferred Compensation Plan as
           of the Effective Time. Such cash shall be invested by the Trustee in
           accordance with the terms of the Deferred Compensation Plan, as
           amended.

               (ii) Unvested Deferred Restricted Units.  At the Effective Time,
                    ----------------------------------
           the Deferred Restricted Units then unvested shall be converted into a
           deferred payment note of AZOA, in a form agreed by AZOA, Advisors LP
           and Partners LP (the "AZOA Unvested Deferred Payment Note"),
                                 -----------------------------------
           delivered by AZOA to the Trustee, in a principal amount equal to the
           Unit Price multiplied by the number of such unvested Deferred
           Restricted Units in the Deferred Compensation Plan as of the Advisors
           LP Effective Time. Such AZOA Unvested Deferred Payment Note (i) shall
           be payable as and when Deferred Restricted Units vest on the original
           vesting schedule set forth in the relevant Deferred Restricted Unit
           Agreement, (ii) shall continue to be subject to the forfeiture
           provisions of the relevant Deferred Restricted Unit Agreement, and
           (iii) shall be subject to the terms of the Deferred Compensation
           Plan, as amended.

     2.05  Closing.  The closing of the Transactions (the "Closing") shall take
           -------                                         -------
place (i) at the offices of Sullivan & Cromwell, 125 Broad Street, New York, New
York at 9:00 A.M. on the fifth business day after the first calendar month-end
on which the last to be fulfilled or waived of the conditions set forth in
Article V (other than those conditions that by their nature are to be satisfied
at the Closing, but subject to the fulfillment or waiver of those conditions)
shall have been satisfied or waived in accordance with this Agreement or (ii) at
such other place and time and/or on such other date as AZOA, Partners LLC,
Partners GP and PacMan may agree in writing (the "Closing Date").
                                                  ------------
Notwithstanding anything to the contrary contained in this Article II, the
consummation of each of the transactions set forth in Sections 2.01, 2.02 and
2.03 shall be contingent on the fulfillment of all conditions to the
consummation of each other transaction.

     2.06  Organization of AZOA Subsidiaries.  Prior to the Closing Date, AZOA
           ---------------------------------
will or will cause Allianz Asset Management to (a) organize Holdings LP Merger
Sub as a Delaware limited partnership, (b) organize Allianz GP Sub, Holdings LP
General Partner and Advisors LP Merger Sub, each as a Delaware limited liability
company and (c) cause each of Holdings LP Merger Sub, Allianz GP Sub, Holdings
LP General

                                      -28-
<PAGE>

Partner, Advisors LP Merger Sub and, after the organization of PacPartners LLC
in accordance with Section 4.14, PacPartners LLC, to become a party to this
Agreement, to be evidenced by the execution by each such Person of a supplement
to this Agreement, in substantially the form of Exhibit D (a "Supplement"), and
                                                              ----------
delivery of such Supplement to Advisors LP and PacLife.

                                  ARTICLE III

                         Representations and Warranties

     3.01 Disclosure Schedules.  On or prior to the date hereof, (i) AZOA and
          --------------------
(ii) Partners LLC, PacMan, Holdings LP, Advisors LP and its Subsidiaries, has
delivered to Sellers, in the case of AZOA, and to AZOA, in the case of the
Parties listed in clause (ii), a disclosure schedule (with respect to each such
delivering Party or Parties, its "Disclosure Schedule") setting forth, among
                                  -------------------
other things, items the disclosure of which is necessary or appropriate either
in response to an express disclosure requirement contained in a provision hereof
or as an exception to one or more representations or warranties made pursuant to
Section 3.03 or 3.04, as the case may be; provided that the mere inclusion of an
                                          --------
item in a Disclosure Schedule as an exception to a representation or warranty
shall not be deemed an admission by a Party that such item represents such an
exception or fact, event or circumstance or that such item is reasonably likely
to result in a Material Adverse Effect with respect to such Party.

     3.02 Standards.  For purposes of the conditions set forth in Sections
          ---------
5.02(a) and 5.03(a), respectively, no representation or warranty contained in
Section 3.03 (excluding paragraph (k)(D) thereof, in the case of each Seller,
and Section 3.04 (excluding paragraph (h) thereof), in the case of AZOA, shall
be deemed untrue or incorrect, and no Party shall be deemed to have breached
such a representation or warranty, as a consequence of the existence of any
fact, event or circumstance unless:

          (a) in the case of each representation and warranty contained in
paragraphs (b), (c), (d), (e), (g), (h)(ii), (i), (j), (o)(iii) and (ix), (t),
(z), (bb) and (cc) of Section 3.03, and paragraphs (b), (c), (d), (f) and (g) of
Section 3.04, such fact, circumstance or event would cause any such
representation and warranty to fail to be true and correct in all material
respects; and

          (b) in the case of each other representation and warranty contained in
Section 3.03 and Section 3.04 such fact, circumstance or event, individually or
taken together with all other facts, events or circumstances inconsistent with
such representation or warranty contained in Section 3.03 or 3.04 (other than
those set forth in

                                      -29-
<PAGE>

Section 3.02(a)) has had or is reasonably likely to have a Material Adverse
Effect with respect to such Party.

     3.03 Representations and Warranties of the Sellers.  Subject to Sections
          ---------------------------------------------
3.01 and 3.02 and except as Previously Disclosed, each of the Sellers makes each
of the following representations and warranties; provided, however, that, unless
                                                 --------  -------
otherwise indicated, none of the representations and warranties shall be made
with respect to any of PacMan's Subsidiaries other than Holding LLC and each of
its Subsidiaries.

     (a)  Organization, Standing and Authority.  Each of the Sellers hereby
          ------------------------------------
represents and warrants that:

          (i) it and each of its Subsidiaries is duly organized, validly
     existing and in good standing under the laws of its jurisdiction of
     organization, as Previously Disclosed, with full power and authority to
     own, lease or operate its assets and to carry on its business as currently
     conducted;

          (ii) it and each of its Subsidiaries is duly qualified to do business
     and is in good standing in each state of the United States and any
     jurisdiction outside the United States where its ownership or leasing of
     property or assets or the conduct of its business requires it to be so
     qualified; and

          (iii)  prior to the date hereof, it has made available to AZOA a
     complete and correct copy, as of the date hereof, of its Constituent
     Documents and the Constituent Documents of each of its Subsidiaries, in
     each case as amended to such date.  As of the date hereof, each such
     Constituent Document is in full force and effect.

     (b)  ETA Holders.  Each of the Sellers hereby represents and warrants that
          -----------
(i) Previously Disclosed is a complete and correct list of each ETA (including
all amendments thereto) in force and to which it or any of its Subsidiaries is a
party and there are no employment termination and non-competition agreements to
which it or any of its Subsidiaries is a party other than the ETAs; each such
ETA was duly authorized, executed and delivered by such party and to such
Seller's knowledge, by the other party thereto, and, as of the date hereof, is a
valid and binding agreement, enforceable against such party, and, to such
Seller's knowledge, the other party thereto, in each case subject to bankruptcy,
insolvency, fraudulent transfer, reorganization, moratorium and similar laws of
general applicability relating to or affecting creditors' rights, any
restrictions under Applicable Law on the enforceability of any covenant or
restriction regarding competition and to general equity principles (the
"Bankruptcy and Equity Exception") and (ii) neither such Party nor, to such
 -------------------------------
Seller's knowledge, the other party thereto is in default or in breach under the
terms of any such agreement and there has been no event

                                      -30-
<PAGE>

which, with notice or lapse of time or both, has resulted or would be reasonably
likely to result in any such breach, violation or event of default.

     (c) Capitalization of Advisors LP; Equity Interests.  Each of the Sellers
         -----------------------------------------------
hereby represents and warrants that:

         (i) as of October 31, 1999, there were 113,976,477 Class A Units, of
     which 50,364,070 were Advisors GP Units, 6,000,000 Class C Units and 600
     Class D Units issued and outstanding;

         (ii) as of October 31, 1999, all of the outstanding Class A Units,
     Class C Units and Class D Units were held of record by the Persons
     Previously Disclosed, which sets forth the number of Class A Units
     (including the Class A Units which are classified as Advisors GP Units),
     Class C Units and Class D Units held by each such Person;

         (iii) as of October 31, 1999, each of the outstanding Advisors LP Units
     and Advisors GP Units was duly authorized and validly issued, is fully
     paid, and, subject to Applicable Law, nonassessable, is not subject to
     preemptive rights and was not issued in violation of any preemptive rights;

         (iv) Previously Disclosed is a list, as of October 31, 1999, of any
     Equity Interests in Advisors LP or any of its Subsidiaries, businesses or
     divisions to be received by any Person pursuant to any Contract or
     Compensation and Benefit Plan, indicating the name of each such Person, the
     Contract or Compensation and Benefit Plan pursuant to which it is entitled
     or will be entitled to receive such Equity Interests, the type, class and
     number of Equity Interests the Person is or will be entitled to receive
     thereunder, the equivalent amount of Class A Units such Equity Interests
     represent and the purchase price, if any, to be paid by such Person in
     consideration for such Equity Interests;

         (v) except as Previously Disclosed, as of October 31, 1999, there were
     no outstanding rights, options, warrants, conversion rights, redemption
     rights, repurchase rights, or agreements, arrangements or commitments to
     issue or sell any Advisors LP Units, Advisors GP Units or other Equity
     Interests or Profit Interests in Advisors LP or securities of Advisors LP
     or any securities or obligations convertible or exchangeable into or
     exercisable for, or giving any Person a right to subscribe for or acquire,
     any such Advisors LP Units, Advisors GP Units or other Equity Interests,
     Profit Interests or securities of Advisors LP and no securities or
     obligations evidencing such rights are authorized, issued or outstanding;
     and

                                      -31-
<PAGE>

          (vi) except as Previously Disclosed, neither Advisors LP nor any of
     its Subsidiaries has outstanding any bonds, debentures, notes or other
     obligations for borrowed money the holders of which have the right to vote
     or which are convertible into or exercisable for securities having the
     right to vote, with the holders of Advisors LP Units or Advisors GP Units
     on any matter.

          (vii) as of the Closing Date, the Class A Units to be contributed to
     PacPartners LLC by PacMan or any of its Subsidiaries will be owned by such
     Person, free and clear of all Encumbrances.

     (d) Holdings LP Capitalization.  Each of the Sellers hereby represents and
         --------------------------
warrants that:

         (i) as of October 31, 1999, there were 49,558,972 Holdings LP Units and
     5,099 Holdings GP Units issued and outstanding;

         (ii) each Holdings GP Unit is held of record and beneficially by
     Partners GP free and clear of all Encumbrances;

         (iii) each of the outstanding Holdings LP Units and Holdings GP Units
     was duly authorized and validly issued, is fully paid and, subject to
     Applicable Law, nonassessable, is not subject to preemptive rights, and was
     not issued in violation of any preemptive rights;

         (iv) except as Previously Disclosed, as of October 31, 1999, there were
     no outstanding rights, options, warrants, conversion rights, redemption
     rights, repurchase rights, or agreements, arrangements or commitments to
     issue or sell any Holdings LP Units, Holdings GP Units or other Equity
     Interests or Profit Interests in Holdings LP or securities of Holdings LP
     or any securities or obliga tions convertible or exchangeable into or
     exercisable for, or giving any Person a right to subscribe for or acquire,
     any such Holdings LP Units, Holdings GP Units or other Equity Interests,
     Profit Interests or securities of Holdings LP and no securities or
     obligations evidencing such rights are authorized, issued or outstanding;
     and

         (v) except as Previously Disclosed, neither Holdings LP nor any of its
     Subsidiaries has outstanding any bonds, debentures, notes or other
     obligations for borrowed money the holders of which have the right to vote,
     or are convertible into or exercisable for securities having the right to
     vote, with the holders of Holdings LP Units or Holdings GP Units on any
     matter.

                                      -32-
<PAGE>

     (e)  Capitalization and Operations of Other Acquired Entities.  PacMan
          --------------------------------------------------------
hereby represents and warrants as to Holding LLC and Partners GP; Holding LLC
hereby represents and warrants as to itself and Partners GP; Partners LLC hereby
represents and warrants as to Partners GP; and Partners GP hereby represents and
warrants as to itself that:

          (i)    Previously Disclosed is a complete and correct list of each
     Equity Interest in such Person that was issued and outstanding or
     authorized for issuance as of October 31, 1999, and the name of each Person
     that owns any such Equity Interest, and each such Equity Interest is held
     by such Person free and clear of all Encumbrances;

          (ii)   each of the outstanding Equity Interests in such Person was
     duly authorized and validly issued, is fully paid, and, subject to
     Applicable Law, nonassessable, and was not issued in violation of any
     preemptive rights;

          (iii)  except as Previously Disclosed, as of October 31, 1999, there
     were no preemptive or other outstanding rights, options, warrants,
     conversion rights, redemption rights, repurchase rights, or agreements,
     arrangements or commitments to issue or sell any Equity Interests or Profit
     Interests or other securities of any such Person or any securities or
     obligations convertible or exchangeable into or exercisable for, or giving
     any Person a right to subscribe for or acquire, any such Equity Interests
     or Profit Interests or other securities, and no securities or obligations
     evidencing such rights are authorized, issued or outstanding;

          (iv)   except as Previously Disclosed, no such Person has outstanding
     any bonds, debentures, notes or other obligations for borrowed money the
     holders of which have the right to vote (or which are convertible into or
     exercisable for securities having the right to vote) with the holders of
     any Equity Interests Previously Disclosed on any matter; and

          (v)    each such Person (A) does not own, beneficially or of record,
     any Equity Interests in any Person other than any such ownership Previously
     Disclosed; and (B) has conducted and conducts no business or operations
     other than activities necessary to maintain its corporate, partnership or
     other legal existence or to comply with its Constituent Documents and
     activities conducted in its role as limited partner, general partner, or
     managing member, as the case may be, of its direct Subsidiaries and
     activities conducted in connection with or contemplated by this Agreement
     and the other Transaction Documents.

                                      -33-
<PAGE>

     (f)  Subsidiaries and Controlled Affiliates of Advisors LP.  Each of the
          -----------------------------------------------------
Sellers hereby represents and warrants that:

          (i)    Previously Disclosed is a complete and correct list of all of
     the Subsidiaries of Advisors LP and each Affiliate of Advisors LP
     controlled by Advisors LP or any of its Subsidiaries (a "Controlled
                                                              ----------
     Affiliate"), together with the jurisdiction of organization of each such
     ---------
     Subsidiary;

          (ii)   except as Previously Disclosed, Advisors LP owns, directly or
     indirectly, all of the issued and outstanding Equity Interests in and other
     securities of each of its Subsidiaries, free and clear of any Encumbrances;

          (iii)  except as Previously Disclosed, each of the outstanding Equity
     Interests in and each other security of each of its Subsidiaries was duly
     authorized and validly issued, is fully paid and, subject to Applicable
     Law, nonassessable, and was not issued in violation of any preemptive
     rights;

          (iv)   except as Previously Disclosed, as of October 31, 1999, there
     were no preemptive or other outstanding rights, options, warrants,
     conversion rights, redemption rights, repurchase rights, or agreements,
     arrangements or commitments to issue or sell any Equity Interests or Profit
     Interests of any such Subsidiary or any securities or obligations
     convertible or exchangeable into or exercisable for, or giving any Person a
     right to subscribe for or acquire, any such Equity Interests or Profit
     Interests, and no securities or obligations evidencing such rights are
     authorized, issued or outstanding;

          (v)    except as Previously Disclosed, there are no Contracts by which
     Advisors LP or any Subsidiary thereof is or may be bound to sell or
     otherwise transfer any Equity Interest in such Subsidiary; and

          (vi)   except as Previously Disclosed, there are no Contracts relating
     to the rights of Advisors LP or any Subsidiary thereof to vote or to
     dispose of any such Equity Interests.

     (g)  Authority; Approval and Fairness.
          --------------------------------

          (i)   Each of the Sellers hereby represents and warrants as to itself
     and each of its Subsidiaries that is a Party hereto that:

                (A) each such Person has all requisite corporate, partnership or
          limited liability company power and authority and has taken all
          corporate, partnership or limited liability company action necessary
          in order to

                                      -34-
<PAGE>

          execute, deliver and perform its obligations under each of the
          Transaction Documents to which it is or will be a party and to
          consummate, subject to the adoption of the Merger Agreement by the
          Holdings LP Unitholders in accordance with the Holdings LP Partnership
          Agreement and the DE Partnership Law and any other vote or consent of
          stockholders, limited partners, members or other owners of Equity
          Interests therein Previously Disclosed, the transactions contemplated
          by such Transaction Documents;

               (B)  except as Previously Disclosed, no Person has any
          dissenter's, appraisal  or similar right with respect to the
          consummation of the Transactions contemplated by this Agreement or the
          other Transaction Documents by it or any of its Subsidiaries; and

               (C)  each Transaction Document to which such Person is a party is
          or, when executed and delivered in accordance with the terms thereof
          or of this Agreement and assuming the due authorization, execution and
          delivery by each other Person who is a party thereto, will be a valid
          and binding agreement of such Person, enforceable against such Person
          in accordance with its respective terms, subject to the Bankruptcy and
          Equity Exception.

          (ii) Holdings LP and Advisors LP have previously delivered to AZOA
     copies of the fairness opinion of Salomon Smith Barney received by them.

     (h)  Regulatory Filings; No Defaults. Each of the Sellers hereby represents
          -------------------------------
and warrants as to itself and each of its Subsidiaries that:

          (i)   except as Previously Disclosed, no consents, registrations,
     approvals, permits or authorizations of, or notices, reports, registrations
     or other filings with, any Authority are required to be made or obtained by
     any such Person in connection with the execution, delivery or performance
     by it or any of its Subsidiaries of this Agreement or any other Transaction
     Document to which it or any of its Subsidiaries is a party, or to
     consummate the transactions hereunder or thereunder except for filings to
     be made under the HSR Act and the filings required pursuant to Sections
     2.01(b) and 2.03(b); and

          (ii)  the execution and delivery by it and each of its Subsidiaries
     that is a party to a Transaction Document of each of the Transaction
     Documents to which such Person is a party does not, and, subject to the
     satisfaction of Section 3.03(g)(i) and 3.03(h)(i) above, the consummation
     of the transactions thereunder will not, constitute or result in (A) a
     breach or violation of, or a default under, its Constituent Documents or
     those of any of its Subsidiaries, (B) except as

                                      -35-
<PAGE>

     Previously Disclosed, a breach or violation of, or a default under, the
     acceleration of any obligations or the creation of an Encumbrance on its
     assets or those of its Subsidiaries (with or without notice, lapse of time
     or both) pursuant to any Key Contract or any Contract that is or would be
     required to be filed as an exhibit to a periodic report filed under the
     Exchange Act in accordance with Regulation S-K thereunder binding upon it
     or any of its Subsidiaries or any Applicable Law or any governmental permit
     or license held by it or any of its Subsidiaries or to which any such
     Person is subject or (C) except as Previously Disclosed, any change in the
     rights or obligations of any party under any of such Contracts; and
     Previously Disclosed is a complete and correct list of Contracts to which
     it or any of its Subsidiaries is a party pursuant to which consents or
     waivers are or may be required prior to or in connection with the
     consummation of the Transactions.

     (i)  Holdings LP Financial Statements; SEC Reports.  Each of the Sellers
          ---------------------------------------------
hereby represents and warrants that:

          (i)    Holdings LP has made available to AZOA a copy of its Annual
     Report on Form 10-K for the fiscal year ended December 31, 1998, and a
     complete and correct list of all other reports, registration statements,
     proxy statements or information statements filed with the SEC by Holdings
     LP or any of its Subsidiaries since December 31, 1998 (the "Audit Date"),
                                                                 ----------
     under the Securities Act, or under Section 13(a), 13(c), 14 or 15(d) of the
     Exchange Act (collectively with any such reports filed subsequent to the
     date hereof and as amended, the "SEC Reports");
                                      -----------

          (ii)   as of their respective dates (or, if amended, as of the date of
     such amendment), the SEC Reports did not, and any SEC Reports filed with
     the SEC subsequent to the date hereof will not, contain any untrue
     statement of a material fact or omit to state a material fact required to
     be stated therein or necessary to make the statements made therein, in the
     light of the circumstances in which they were made, not misleading;

          (iii)  each of the statements of financial condition of Holdings LP
     and the consolidated statements of financial condition of Advisors LP and
     Oppenheimer Capital included in or incorporated by reference into the SEC
     Reports (including the related notes and schedules) fairly presents, or
     will fairly present, the financial condition of Holdings LP, Advisors LP
     and Oppenheimer Capital, respectively, as of its respective date, and each
     of the statements of operations, cash flows and changes in partners'
     capital of Holdings LP and each of the consolidated statements of
     operations, cash flows and changes in partners' capital of Advisors LP and
     Oppenheimer Capital included in or incorporated by reference into the SEC
     Reports (including the related notes, statements and

                                      -36-
<PAGE>

     schedules) fairly presents, or will fairly present, the results of
     operations, cash flow or changes in partners' capital, as the case may be,
     of Holdings LP, Advisors LP and Oppenheimer Capital, respectively, for the
     periods set forth therein (subject, in the case of unaudited statements, to
     the absence of notes and normal year-end audit adjustments that will not be
     material in amount or effect), in each case in accordance with GAAP
     consistently applied during the periods involved, except as may be noted
     therein; and

          (iv)  except as disclosed in the SEC Reports or as Previously
     Disclosed, since December 31, 1998, none of Holdings LP, Advisors LP,
     Oppenheimer Capital or their respective Subsidiaries has incurred any
     material liability (accrued, contingent or otherwise) other than (A) in the
     ordinary course of business consistent with past practice or (B) as
     contemplated by or in connection with the Transaction Documents.

     (j)  Other Financial Statements.  Each of the Sellers hereby represents and
          --------------------------
warrants, that:

          (i)   it has previously made available or caused to be made available
     to AZOA complete and correct copies of audited financial statements for the
     fiscal years ended December 31, 1996, 1997 and 1998 of PIMCO, OpCap and PFD
     and each of such audited financial statements (including any related notes,
     statements and schedules thereto) fairly presents results of operations,
     changes in partners' capital, changes in members' equity or changes in cash
     flows, as the case may be, of the Person to which they relate and those of
     its Subsidiaries, if any, for the periods set forth therein, in each case
     in accordance with GAAP consistently applied during the periods involved,
     except as may be noted therein; and

          (ii)  Annex B to this Agreement sets forth two lists of supplementary
     financial reports and other materials provided to AZOA by Advisors LP.

                (A) The reports cited in items 2 and 5 through 11 of the
          Financial Information and Document List in Annex B constitute special
          reports prepared without review at the request of AZOA from the
          internal financial records of Advisors LP and its Subsidiaries, by the
          Chief Financial Officer of Advisors LP.  The Sellers have no reason to
          believe that such information is not correct in all material respects.

                (B) The reports cited on the Assets Under Management and
          Document List in Annex B constitute true and correct copies of
          internal management reports prepared in the ordinary course, and, to
          the

                                      -37-
<PAGE>

          knowledge of the Sellers, such information is correct in all material
          respects.

               (C) The report cited in item 4 of the Financial Information and
          Document List in Annex B (1999 Budget Review) is a true and correct
          copy of materials provided to the Management Board of Advisors LP.

     (k)  Absence of Certain Changes.  Each of the Sellers hereby represents and
          --------------------------
warrants that, except as disclosed in the SEC Reports filed prior to the date
hereof or as contemplated by the Transaction Documents, since the Audit Date,
Holdings LP and its Subsidiaries have conducted their respective businesses in
the ordinary course and (A) there has not been, as of the date hereof, any
declaration, setting aside or payment of any dividend or other distribution in
respect of its Equity Interests, except for distributions on Holdings LP Units
publicly announced prior to the date hereof and, with respect to each other such
Person except for ordinary distributions not in excess of Operating Profit
Available for Distributions plus prior reserves; (B) there has not been any
change by any such Persons in accounting principles, practices or methods other
than any change required by a change in GAAP; (C) there has not been any
increase in the compensation payable by Holdings LP or any of its Subsidiaries
to any managing directors, officers or employees or any amendment of any of the
Compensation and Benefit Plans of any such Person other than increases in
compensation in the ordinary course of business or as contemplated under the
Transaction Documents; and (D) there has occurred no event which has resulted in
or could reasonably be expected to result in a Material Adverse Effect.

     (l)  Litigation.  Each of the Sellers hereby represents and warrants that,
          ----------
except as Previously Disclosed, there are no civil, criminal or administrative
actions, suits, claims, hearings, investigations or proceedings pending or, to
the knowledge of such Seller, threatened against it or any of its Subsidiaries
(other than PacMan or Partners LLC) except for any such action, suit, claim,
hearing, investigation or proceeding that is not reasonably likely to give rise
to damages or other losses in excess of $5,000,000.

     (m)  Title to Properties.  Each of the Sellers hereby represents and
          -------------------
warrants that:

          (i)  Previously Disclosed is a complete and correct list of (I) all
     leases requiring annual payments in excess of $1,000,000 to which Holdings
     LP or any of its Subsidiaries is a party as of the date hereof (the "Lease
                                                                          -----
     Agreements"), setting forth in the case of any such lease covering real
     ----------
     property, the location of such real property, and (II) all real properties
     owned by Holdings LP or any of its Subsidiaries as of the date hereof (the
     "Owned Real Property").  Each of Holdings LP and its Subsidiaries has good
      -------------------
     and valid and, in the case of its Owned Real

                                      -38-
<PAGE>

     Property, insurable title to, or a valid and binding leasehold interest in,
     all of the properties and assets owned or leased by it or any of its
     Subsidiaries, free and clear of all Encumbrances, except for (x) any
     Encumbrances for taxes, assessments and other governmental charges not yet
     due and payable or due but not delinquent or due and being contested in
     good faith by appropriate proceedings or (y) any Encumbrances that do not
     materially impair the value of any such property or asset for its current
     use;

          (ii)   each of the Lease Agreements was duly authorized and is valid,
     binding and enforceable against each of Holdings LP or any of its
     Subsidiaries which is a party thereto and, to such Seller's knowledge,
     against each other party thereto, and is in full force and effect.  There
     exists no material breach, violation or event of default by Holdings LP or
     any of its Subsidiaries under any such leases or, to the knowledge of such
     Seller, by any third party thereto, nor, to the knowledge of such Seller,
     any breach, violation or event which with notice or lapse of time or both
     would reasonably be expected to result in an event of default; and

          (iii)  The reserves established by Advisors LP with respect to the
     termination and abandonment of the leases with respect to properties at One
     World Financial Center, Two World Financial Center and 33 Maiden Lane, all
     in the Borough of Manhattan, New York, correctly reflect in accordance with
     GAAP the liability of OpCap under those leases.

     (n)  Contracts.  Each of the Sellers hereby represents and warrants that:
          ---------

          (i)    Previously Disclosed is a list of each of the Key Contracts to
     which such Seller (other than PacMan and Partners LLC) or any of its
     Subsidiaries is a party, or by which any of them is bound as of September
     30, 1999;

          (ii)   it has made available to AZOA complete and correct copies of
     each such Key Contract; each such Key Contract was duly authorized by such
     Seller or such Subsidiaries, as applicable, which is a party thereto, and
     is valid, binding and enforceable against such Seller or such Subsidiary,
     as the case may be, and to such Seller's knowledge, each other party
     thereto, subject in each case to the Bankruptcy and Equity Exception, and
     neither such Seller nor any such Subsidiary, nor, to the knowledge of such
     Seller, any other party thereto is in default or in breach in any material
     respect under the terms of any such Key Contract and, to such Seller's
     knowledge, there has been no event which, with notice or lapse of time or
     both, would reasonably be expected to result in any such breach or
     violation or an event of default under any such Key Contract; and

                                      -39-
<PAGE>

          (iii)  as of the Closing Date, no Seller (other than PacMan and
     Partners LLC) will have any Key Contracts other than as Previously
     Disclosed and such other Key Contracts entered into after September 30,
     1999 as would be permitted to be entered into in accordance with Section
     4.01.

     (o)  Compliance with Applicable Laws; Permits.  PacMan and Partners LLC as
          ----------------------------------------
to their respective Subsidiaries and each other Seller as to itself and its
Subsidiaries, hereby represents and warrants that:

          (i)    it and each of its Subsidiaries is in substantial compliance
     with all Applicable Laws;

          (ii)   it and each of its Subsidiaries is in substantial compliance
     with all requirements under Applicable Law for permits, licenses,
     authorizations, orders and approvals of all Authorities that are required
     in order to permit such Person to own or lease its properties and assets
     and to conduct its business as presently conducted; and all of such
     Person's material permits, licenses, certificates of authority, orders and
     approvals are in full force and effect and are current and, to such
     Seller's knowledge, no suspension or cancellation of any of them is
     threatened or is reasonably likely;

          (iii)  (A) it and each of its Subsidiaries which is required to be,
     registered as a broker/dealer, an investment adviser, a registered
     representative, a commodity trading advisor, commodity pool operator,
     futures commission merchant or transfer agent (or in a similar capacity)
     with any Authority, is duly registered or, in the case of any officer or
     employee, in the process of being duly registered as such, and each such
     registration is in full force and effect; and (B) each of the officers,
     employees and Affiliates of it and its Subsidiaries which is required to be
     registered as a broker/dealer, an investment adviser, a registered
     representative, a commodity trading advisor, commodity pool operator,
     futures commission merchant, transfer agent or a sales person (or in a
     similar capacity) with any Authority, is duly registered or, in the case of
     any officer or employee, in the process of being duly registered as such,
     and each such registration is in full force and effect; except, in the case
                                                             ------
     of any officer or employee, for any failure to be so registered that,
     individually or in the aggregate, does not and would not be reasonably
     likely to, materially affect the business conducted by Advisors LP and its
     Subsidiaries taken as a whole;

          (iv)   neither it nor any of its Subsidiaries has received, since
     January 1, 1998, any notification or communication in writing, from any
     Authority (A) threatening to revoke or condition the continuation of any
     material license, franchise, seat on any exchange, permit, or governmental
     authorization or

                                      -40-
<PAGE>

     (B) restricting or disqualifying their activities (except for restrictions
     generally imposed by rule, regulation or administrative policy on similarly
     regulated Persons generally);

          (v)     to its knowledge, there are no pending or threatened
     investigations, examinations, audits, reviews or disciplinary proceedings
     by any Authority, other than investigations, examinations, audits and
     reviews conducted in the ordinary course of it, any of its Subsidiaries or
     any director, managing director, officer or employee of any Seller or any
     such Subsidiary;

          (vi)    Advisors LP and its Subsidiaries have adopted and implemented
     and have in place as of the date hereof compliance procedures designed to
     preclude it and its Affiliates from engaging in any "prohibited
     transaction" within the meaning of Section 406 of ERISA or Section 4975(c)
     of the Code which would subject it to liability, penalty or taxes under
     Sections 409 or 502(i) of ERISA or Section 4975 of the Code in connection
     with any Compensation and Benefit Plan with respect to which it or any of
     its Affiliates is a "party in interest" within the meaning of Section 3(14)
     of ERISA;

          (vii)   Advisors LP and each of its Subsidiaries has administered all
     accounts for which such Person acts as a fiduciary or agent, including but
     not limited to accounts for which it serves as a trustee, agent, custodian,
     personal representative, guardian or conservator, in substantial compliance
     with the terms of the governing documents and Applicable Law;

          (viii)  except as Previously Disclosed, neither any Seller nor any
     Subsidiary thereof nor any of their respective directors, managing
     directors or executive officers is subject to any cease and desist, censure
     or other disciplinary or similar order issued by, or is a party to any
     written agreement, consent agreement, memorandum of understanding or
     disciplinary agreement with, or is a party to any commitment letter or
     similar undertaking to, or subject to any order or directive by, or a
     recipient of any supervisory letter from, any Authority with respect to the
     business of such Person;

          (ix)    neither any Seller nor any Subsidiary thereof is registered
     as, or is required to be registered as, an investment company under the
     Investment Company Act; and

          (x)     each Form ADV filed by Advisors LP and each of its
     Subsidiaries that is a registered investment adviser under the Investment
     Advisers Act, in its most recent form filed with the SEC, including any
     amendments thereto filed with

                                      -41-
<PAGE>

     the SEC, is complete and correct in all significant respects and omits no
     material facts required to be stated therein.

     (p)  Brokers and Finders.  (i)  PacMan hereby represents and warrants that
          -------------------
neither it, its Subsidiaries nor any of their respective general partners,
managing members, directors, managing directors, officers, or employees, if any,
has employed any broker or finder or incurred any liability for any brokerage
fees, commissions or finders fees in connection with this Agreement or any of
the Transactions other than Goldman Sachs & Co., employed as a financial advisor
to PacMan, the arrangements with which have been disclosed to AZOA prior to the
date hereof.

          (ii)  Holdings LP hereby represents and warrants that neither it, its
     Subsidiaries nor any of their respective general partners, managing
     members, directors, managing directors, officers, or employees, if any, has
     employed any broker or finder or incurred any liability for any brokerage
     fees, commissions or finders fees in connection with this Agreement or any
     of the Transactions other than Lazard Freres & Co. LLC and Salomon Smith
     Barney, in each case employed as a financial advisor to Advisors LP, the
     arrangements with which have been disclosed to AZOA prior to the date
     hereof.

     (q)  Employee Benefit Plans.  Each of the Sellers hereby represents and
          ----------------------
warrants that:

          (i)   Previously Disclosed is a complete and correct list of all
     Compensation and Benefit Plans of Holdings LP or any Subsidiary thereof
     excluding offer letters made in the ordinary course of business.  A
     complete and correct copy of each such Compensation and Benefit Plan has
     been provided or made available to AZOA prior to the date hereof.  Except
     as Previously Disclosed, contemplated by the Transaction Documents or as
     required under Applicable Law, neither Holdings LP nor any of its
     Subsidiaries has any commitment to create any additional Compensation and
     Benefit Plan or to modify or change any existing Compensation and Benefit
     Plan;

          (ii)  each such Compensation and Benefit Plan has been operated and
     administered substantially in accordance with its terms and in substantial
     compliance with Applicable Law, including, but not limited to, ERISA and
     the Code, and any regulations or rules promulgated thereunder, and all
     filings, disclosures and notices required by ERISA and the Code, or any
     other Applicable Law have been timely made.  Each such Compensation and
     Benefit Plan which is a Pension Plan and which is intended to be qualified
     under Section 401(a) of the Code has received a favorable determination
     letter from the IRS with respect to "TRA" (as defined in Section 1 of Rev.
     Proc. 93-39), and it is not aware of any

                                      -42-
<PAGE>

     circumstances likely to result in revocation of any such favorable
     determination letter from the IRS with respect to "TRA" (as defined in
     Section 1 of Rev. Proc. 93-39). There is no pending or, to its knowledge,
     threatened legal action, suit or claim relating to such Compensation and
     Benefit Plans, other than routine claims for benefits. Neither Advisors LP
     nor any of its Subsidiaries has engaged in a transaction, or omitted to
     take any action, with respect to any such Compensation and Benefit Plan
     that could reasonably be expected to subject it or any of its Subsidiaries
     to a tax or penalty imposed by either Section 4975 of the Code or Section
     502 of ERISA, assuming for purposes of Section 4975 of the Code that the
     taxable period of any such transaction expired as of the date hereof;

          (iii)  neither Holdings LP nor any of its Subsidiaries has ever
     maintained any Compensation and Benefit Plan subject to Title IV of ERISA;

          (iv)   neither Holdings LP nor any of its Subsidiaries has any
     obligation to provide retiree health and life insurance or other retiree
     death benefits under any Compensation and Benefit Plan, other than benefits
     mandated by Section 4980B of the Code or other Applicable Law, and each
     such Compensation and Benefit Plan may be amended or terminated in
     accordance with its terms without incurring liability thereunder;

          (v)    except as Previously Disclosed, as provided under any
     Compensation and Benefit Plan Previously Disclosed as in effect on the date
     hereof or as contemplated by a Transaction Document, the consummation of
     the Transactions would not, directly or indirectly (including, without
     limitation, as a result of any termination of employment prior to or
     following the Closing Date) (A) entitle any present or former employee,
     consultant or director, member, stockholder or partner to any payment
     (including severance pay or similar compensation) or any increase in
     compensation, (B) result in the vesting or acceleration of any benefits
     under any such Compensation and Benefit Plan or trigger any payment or
     funding (through a grantor trust or otherwise) of compensation or benefits
     under any such Compensation and Benefit Plan, (C) result in any increase in
     benefits payable under any such Compensation and Benefit Plan, or (D)
     result in any breach or violation of, or a default under, any such
     Compensation and Benefit Plans.

     (r)  Labor Matters.  Each of the Sellers hereby represents and warrants
          -------------
that:

          (i) neither Advisors LP nor any of its Subsidiaries is a party to or
     is bound by any collective bargaining agreement or Contract (other than
     Advisory Agreements) with a labor union or labor organization; and

                                      -43-
<PAGE>

          (ii) as of the date hereof, neither Holdings LP nor any of its
     Subsidiaries is or, to such Seller's knowledge, is threatened to be, the
     subject of a proceeding seeking to compel Advisors LP or any of its
     Subsidiaries to bargain with any labor union or labor organization nor is
     there pending or, to its knowledge, threatened, nor has there been for the
     past five years, any strike, walk-out, work stoppage, slow-down, lockout or
     other labor dispute involving Advisors LP or any of its Subsidiaries nor is
     Advisors LP aware of any activity involving its or any of its Subsidiaries'
     employees seeking to certify a collective bargaining unit or engaging in
     other organizational activity.

     (s)  Employees.  (i) As of the date hereof, each of the Sellers hereby
          ---------
represents and warrants that none of Advisors LP's, Holdings LP's, OpCap's or
PIMCO's employees or group of employees who is or are responsible for a material
business operation of either Advisors LP, Holdings LP, OpCap or PIMCO has or
have delivered any written notice of termination and (ii) except as Previously
Disclosed, each Seller hereby represents and warrants that neither it nor any of
its Subsidiaries, other than Holdings LP and its Subsidiaries, has any employees
other than the officers thereof.

     (t)  Tax Matters.
          -----------

          (i)  Each Seller hereby represents and warrants that except as
     Previously Disclosed:

               (A)  all material Tax Returns required to be filed or furnished
          to any Person (including its owners) on or before the Closing Date by
          Advisors LP and each of its Subsidiaries have been, or will be, duly
          and timely filed or furnished, the information reflected on those Tax
          Returns was, or when filed or furnished will be, accurate and complete
          in all material respects, and Advisors LP and each of its Subsidiaries
          have, or will have, timely paid all material Taxes for which they are
          responsible that are due on or before the Closing Date, and through
          the Closing Date will have maintained adequate reserves on their books
          in accordance with their normal practices for all Taxes payable by
          them that have accrued but are not yet due;

               (B)  no assessments, claims or deficiencies for any material
          Taxes of Advisors LP or any of its Subsidiaries have been proposed,
          asserted, assessed, or threatened in writing, and no Tax Authority has
          stated in writing that any are forthcoming or threatened;

                                      -44-
<PAGE>

               (C)  there are no outstanding waivers or agreements extending the
          applicable statute of limitations for any period with respect to any
          material Taxes of Advisors LP or any of its Subsidiaries;

               (D)  to the Sellers' knowledge, neither Advisors LP nor any of
          its Subsidiaries will be required, as a result of (A) a change in
          accounting method for a Tax period beginning on or before the Closing
          Date, to include any adjustment under Section 481(c) of the Code (or
          any similar provision of state, local or foreign law) in taxable
          income for any Tax period beginning on or after the Closing Date, or
          (B) any "closing agreement" as described in Section 7121 of the Code
          (or any similar provision of state, local or foreign law), to include
          any item of income in or exclude any item of deduction from any Tax
          period beginning on or after the Closing Date;

               (E)  to the Sellers' knowledge, no claim has ever been made by a
          taxing authority in writing that Advisors LP or any of its
          Subsidiaries may be subject to taxation or required to file a Tax
          Return in a jurisdiction where it does not file Tax Returns and
          neither Advisors LP nor any Subsidiary is aware of any jurisdiction
          that could properly make such a claim;

               (F)  there are no Tax allocation, Tax sharing or Tax indemnity
          agreements to which Advisors LP or any of its Subsidiaries is a party
          as to which Advisors LP or any of its Subsidiaries would have any
          liability after the Closing Date;

               (G)  none of Advisors LP's Subsidiaries is or has been a member
          of an affiliated group within the meaning of Section 1504 of the Code
          or similar provisions of state, local or foreign law;

               (H)  (1) Each of the Sponsored Registered Investment Companies
          has elected to be treated as a "regulated investment company" under
          Subchapter M of Chapter 1 of Subtitle A of the Code, and each of such
          Investment Companies has, except for any taxable year of such
          Investment Companies that has been closed and for which the statute of
          limitations for assessments has expired, qualified as a "regulated
          investment company" and each of such Investment Companies has complied
          with all applicable provisions of law necessary to preserve and retain
          such Investment Company's election and status as a regulated
          investment company; (2) each Sponsored Investment Company which is a
          Non-Registered Investment Company has elected to be treated as a

                                      -45-
<PAGE>

          "partnership" for U.S. federal income tax purposes (unless such
          partnership tax status is not contemplated for its operations) and
          has, except for any taxable year of such Sponsored Investment Company
          that has been closed and for which the statute of limitations for
          assessments has expired, qualified as a "partnership" and each of such
          Sponsored Investment Companies has complied with all applicable
          provisions of law necessary to preserve and retain its elections and
          status as a partnership for U.S. federal income tax purposes;  (3)
          each Sponsored Investment Company has timely filed all federal, state,
          local and foreign income and other Tax Returns and reports that it is
          required to file and all such Tax Returns and reports are accurate and
          complete in all material respects; and (4) each Sponsored Investment
          Company has timely paid, or reserved for, Taxes that it is required to
          pay and has paid or reserved for any deficiencies or other Tax
          assessments, including but not limited to all estimated Taxes and
          interest or penalties owed by it; (5) each Sponsored Investment
          Company has complied with all required tax information reporting
          requirements to which it is subject; and (6) such tax information
          reporting returns and reports have been timely filed and are accurate
          and complete in all material respects.

               (I)  each Sponsored Registered Investment Company with variable
          insurance trust portfolios has complied with the diversification
          requirements of Section 817 of the Code;

               (J)  each Sponsored Registered Investment Company has for each
          taxable year distributed at least ninety percent (90%) of its taxable
          income and tax-exempt interest income;

               (K)  no Sponsored Registered Investment Company has been or is
          subject to the excise tax imposed under Section 4982 of the Code;

               (L)  Advisors LP and each of its Subsidiaries that is treated as
          a partnership for U.S. federal income tax purposes has made a valid
          election under Section 754 of the Code and such election remains in
          full effect, and will remain in full force and effect, through the
          Closing Date; and

               (M)  it has delivered or caused to be delivered or has made
          available to AZOA complete and accurate copies of all material Tax
          Returns (including attachments thereto other than any Forms K-1
          attached to such Advisors LP Tax Returns filed with respect to any
          taxable year beginning prior to January 1, 1998) filed or furnished to
          any person by Advisors LP and each of its Subsidiaries during or with
          respect to the last

                                      -46-
<PAGE>

          three years, and complete and accurate copies of all closing
          agreements, private letter rulings, technical advice memoranda or
          similar agreements or rulings (if any) entered into with or issued by
          any taxing authority, by or with respect to Advisors LP or any of its
          Subsidiaries.

          (ii) Each Seller hereby represents and warrants that except as
     Previously Disclosed:

               (A)  all material Tax Returns required to be filed or furnished
          to any person (including its partners) on or before the Closing Date
          by Holdings LP have been, or will be, duly and timely filed or
          furnished, the information reflected on those Tax Returns was, or when
          filed or furnished will be, accurate and complete in all material
          respects, and Holdings LP has, or will have, timely paid all material
          Taxes for which it is responsible that are due on or before the
          Closing Date, and through the Closing Date will have maintained
          adequate reserves on their books in accordance with its normal
          practices for all Taxes payable that have accrued but are not yet due;

               (B)  no assessments, claims or deficiencies for any material
          Taxes of Holdings LP have been proposed, asserted, assessed, or
          threatened in writing, and no tax authority has stated in writing that
          any are forthcoming or threatened;

               (C)  there are no outstanding waivers or agreements extending the
          applicable statute of limitations for any period with respect to any
          material Taxes of Holdings LP;

               (D)  to the Sellers' knowledge, no claim has ever been made by a
          taxing authority in writing that Holdings LP may be subject to
          taxation or required to file a Tax Return in a jurisdiction where it
          does not file Tax Returns and Holdings LP is not aware of any
          jurisdiction that could properly make such a claim;

               (E)  there are no Tax allocation, Tax sharing or Tax indemnity
          agreements to which Holdings LP is a party as to which Holdings LP
          would have liability after the Closing Date;

               (F)  Holdings LP has made a valid election pursuant to Section
          7704(g) of the Code, and such election remains in full effect, and
          will remain in full force and effect through the Closing Date;

                                      -47-
<PAGE>

                 (G)  Holdings LP has made a valid election under Section 754 of
          the Code and such election remains in full effect, and will remain in
          full effect, through the Closing Date; and

                 (H)  it has delivered or caused to be delivered or made
          available to AZOA complete and accurate copies of all material Tax
          Returns (including attachments thereto other than any Forms K-1
          attached thereto) filed or furnished to any person by Holdings LP
          during or with respect to the last three years, and complete and
          accurate copies of all closing agreements, private letter rulings,
          technical advice memoranda or similar agreements or rulings (if any)
          entered into with or issued by any taxing authority, by or with
          respect to Holdings LP.

          (iii)  PacMan hereby represents and warrants as to Holding LLC and
     Partners GP; Partners LLC hereby represents and warrants as to itself and
     Partners GP; Holding LLC hereby represents and warrants to itself and
     Partners GP; that, except as Previously Disclosed:

                 (A) all material Tax Returns required to be filed or furnished
          to any Person (including its owners) on or before the Closing Date by
          it or any of its Subsidiaries have been, or will be, duly and timely
          filed or furnished, the information reflected on those Tax Returns
          was, or when filed or furnished will be, accurate and complete in all
          material respects, and it or any of its Subsidiaries has, or will
          have, timely paid all material Taxes for which they are responsible
          that are due on or before the Closing Date, and through the Closing
          Date will have maintained adequate reserves on their books in
          accordance with their normal practices for all Taxes payable by them
          that have accrued but are not yet due;

                 (B) no assessments, claims or deficiencies for any material
          Taxes of it or any of its Subsidiaries have been proposed, asserted,
          assessed, or threatened in writing, and no tax authority has stated in
          writing that any are forthcoming or threatened;

                 (C) there are no outstanding waivers or agreements extending
          the applicable statute of limitations for any period with respect to
          any material Taxes of it or any of its Subsidiaries;

                 (D) to the knowledge of PacMan, Partners LLC and Holding LLC,
          no claim has ever been made by a taxing authority in writing that it
          or any of its Subsidiaries may be subject to taxation or required to
          file a Tax Return in a jurisdiction where it does not file Tax Returns
          and it or

                                      -48-
<PAGE>

          any of its Subsidiaries is not aware of any jurisdiction that could
          properly make such a claim;

               (E)  there are no Tax allocation, Tax sharing or Tax indemnity
          agreements to which it or any of its Subsidiaries is a party;

               (F)  for U.S. federal income tax purposes each of Partners GP and
          Partners LLC, is, and through the Closing Date will be, treated as a
          partnership;

               (G)  for U.S. federal income tax purposes, Holding LLC is treated
          as a division of PacLife pursuant to Treasury Regulations (S)
          301.7701-2(c)(2) and not as a separate taxable entity;

               (H)  each of Partners GP and Partners LLC has made a valid
          election under Section 754 of the Code, and each such election remains
          in full force and effect and will remain in full force and effect
          through the Closing Date; and

               (I)  it has delivered or caused to be delivered or made available
          to AZOA complete and accurate copies of all material Tax Returns
          (including attachments thereto) filed or furnished to any person by or
          with respect to Partners GP and Partners LLC during or with respect to
          the last three years, and complete and accurate copies of all closing
          agreements, private letter rulings, technical advice memoranda or
          similar agreements or rulings (if any) entered into with or issued by
          any taxing authority, by or with respect to Partners GP and Partners
          LLC.

     (u)  Internal Controls.  Each of the Sellers hereby represents and warrants
          -----------------
as to Holdings LP, Advisors LP, PIMCO and Oppenheimer Capital that each such
Person has devised and maintained a system of internal accounting controls
sufficient to provide reasonable assurances that (A) transactions are executed
in accordance with management's general or specific authorizations, (B)
transactions are recorded as necessary to permit preparation of financial
statements in conformity with GAAP and to maintain accountability for assets,
(C) access to assets is permitted only in accordance with management's general
or specific authorization and (D) the recorded accountability for assets is
compared with the existing assets at reasonable intervals and appropriate action
is taken with respect to any differences.

     (v)  Derivatives, Etc.  Each of the Sellers hereby represents and warrants
          -----------------
that:

                                      -49-
<PAGE>

          (i)    all Derivative Contracts entered into for Advisors LP's own
     account or for the account of any of its Subsidiaries were entered into in
     substantial compliance with Applicable Law and with counterparties
     reasonably believed to be financially responsible at the time; and each of
     them constitutes the valid and legally binding obligation of it or one of
     its Subsidiaries, enforceable in accordance with its terms (except as
     enforceability may be limited by the Bankruptcy and Equity Exception), and,
     to such Seller's knowledge, are in full force and effect; and

          (ii)   neither Advisors LP nor any of its Subsidiaries, nor, to the
     knowledge of Advisors LP or any of its Subsidiaries, as the case may be,
     any other party thereto, is in breach in any material respect of any of its
     obligations under any such Derivative Contract.

     (w)  Intellectual Property.  Each of the Sellers for which Advisors LP is a
          ---------------------
Subsidiary hereby represents and warrants that:

          (i)    Previously Disclosed is a complete and correct list of all
     Intellectual Property used in and material to the business of Holdings LP,
     Advisors LP, PIMCO or OpCap indicating (A) whether it is owned by Holdings
     LP or any of its Subsidiaries (collectively, the "Intellectual Property
                                                       ---------------------
     Rights") or used pursuant to a license, sublicense or other agreement
     ------
     authorizing Holdings LP, Advisors LP or such Subsidiary, as the case may
     be, to use such third-party Intellectual Property (collectively, the
     "Third-Party Intellectual Property Rights") and (B) which entity owns or is
     -----------------------------------------
     authorized to use such Intellectual Property Right or Third-Party
     Intellectual Property Right, as the case may be.

          (ii)   Advisors LP and each of its Subsidiaries owns, or is licensed
     or otherwise possesses the right to use all such Intellectual Property
     Rights and, to the knowledge of Advisors LP or any of its Subsidiaries, all
     Intellectual Property Rights of Advisors LP and/or its Subsidiaries are
     valid and subsisting; and

          (iii)  except as Previously Disclosed:

                 (A) to such Seller's knowledge, neither Advisors LP nor any of
          its Subsidiaries is, nor will be as a result of the execution and
          delivery of any of the Transaction Documents to which such Person is a
          party or the performance of its obligations hereunder and thereunder,
          in violation of any Third-Party Intellectual Property Rights;

                 (B) no claims with respect to (1) the Intellectual Property
          Rights or (2) Third-Party Intellectual Property Rights are currently

                                      -50-
<PAGE>

          pending or, to the knowledge of Advisors LP or its Subsidiaries, are
          threatened by any Person;

                 (C) to the knowledge of Advisors LP or its Subsidiaries, there
          are no valid grounds for any bona fide claims (1) to the effect that
          the distribution, licensing or use of any product as now used, sold or
          licensed or proposed for use, sale or license by Advisors LP or any of
          its Subsidiaries, infringes on any Intellectual Property of any
          Person; (2) against the use by Advisors LP or any of its Subsidiaries
          of any Intellectual Property Right or Third-Party Intellectual
          Property Right; (3) challenging the ownership, validity or
          enforceability of any of the Intellectual Property Rights; or (4)
          challenging the license of or the right to use the Third-Party
          Intellectual Property Rights.

     (x)  Books and Records.  PacMan and Partners LLC as to their respective
          -----------------
Subsidiaries and each other Seller as to itself and its Subsidiaries hereby
represents and warrants that each its books and records have been maintained, as
required to permit each such Person to prepare and present its financial
statements in accordance with GAAP (or generally accepted accounting principles
applicable to such Person, where applicable).

     (y)  Insurance.  PacMan and Partners LLC as to their respective
          ---------
Subsidiaries and each other Seller as to itself and its Subsidiaries hereby
represents and warrants that:

          (i)    Previously Disclosed is a correct and complete list of all of
     the insurance policies, binders or bonds maintained by it or its
     Subsidiaries or under which it or any of its Subsidiaries pays the premiums
     ("Insurance Policies");
       ------------------

          (ii)   it and its Subsidiaries are insured with reputable insurers
     against such risks and in such amounts as its management reasonably has
     determined to be prudent in accordance with industry practices; and

          (iii)  to its knowledge, all the Insurance Policies are in full force
     and effect.

     (z)  Year 2000 Compliance.  Except as Previously Disclosed, PacMan and
          --------------------
Partners LLC as to their respective Subsidiaries and each other Seller as to
itself and its Subsidiaries, hereby represents and warrants that, to its
knowledge:

                 (A) any and all software and hardware operated by Advisors LP
          or its Subsidiaries is capable of providing uninterrupted
          functionality to recognize, record, store, process and present
          calendar dates falling on or after December 31, 1999 and date-
          dependent data in substantially the same

                                      -51-
<PAGE>

          manner and with the same functionality as such software and hardware
          recognizes, records, stores, processes and presents calendar dates
          prior to December 31, 1999 and date-dependent data ("Y2K Compliant")
                                                               --------------
          as of the date hereof; and


               (B)  other than any Clients, each supplier, vendor, financial
          institution or other organization with which Advisors LP or any of its
          Subsidiaries conducts business has remedied or will remedy on a timely
          basis its own Year 2000 issues and will be Y2K Compliant.

     (aa) Investment Advisory Activities.  Each of the Sellers hereby represents
          ------------------------------
and warrants that:

          (i)  Advisory Agreements, Investment Companies and Other Clients. (A)
               -----------------------------------------------------------
     Previously Disclosed in Advisors LP's Disclosure Schedule is a complete and
     correct list, as of September 30, 1999, of (1) all of the Sponsored
     Registered Investment Companies, (2) all Sponsored Non-Registered
     Investment Companies, (3) to Seller's knowledge, all Registered Investment
     Companies other than Sponsored Registered Investment Companies which are a
     party to Advisory Agreements with Advisors LP or its Subsidiaries and (4)
     other Clients, in each case (2), (3) AND (4) having assets under management
     of $100 million or more with one of Advisors LP or its Subsidiaries as of
     such date and in each case, showing the aggregate amount of assets under
     management with Advisors LP and its Subsidiaries as of such date;

               (B)  it has previously made available to AZOA complete and
     correct copies of each Advisory Agreement with any of the Clients listed on
     the Disclosure Schedule of Advisors LP with reference to Section (aa)(i)
     (the "Client Contracts");

               (C)  each Client Contract and any subsequent renewal has been
     duly authorized, executed and delivered by Advisors LP or the applicable
     Subsidiary of Advisors LP and, to the knowledge of such Seller, each other
     party thereto, and is a valid and legally binding agreement, enforceable
     against Advisors LP or such Subsidiary and, to the knowledge of such
     Seller, each other party thereto, subject to the Bankruptcy and Equity
     Exception;

               (D)  each of Advisors LP and its Subsidiaries and, to the
     knowledge of such Seller, each other party thereto, is in substantial
     compliance with the terms of each Client Contract to which it is a party,
     and is not currently in default under any of the terms of any such Client
     Contract; there does not exist under any Client Contract any event or
     condition that, after notice or lapse of time

                                      -52-
<PAGE>

     or both, would constitute an event of default thereunder on the part of
     Advisors LP or such Subsidiary, or, to the knowledge of such Seller, any
     other party thereto;

               (E)  each commodity trading advisor disclosure document provided
     by Advisors LP or any of its Subsidiaries to any Client did not contain any
     untrue statement of a material fact or omit to state a material fact
     necessary in order to make the statements made therein, in light of the
     circumstances under which they were made, not misleading;

               (F)  neither Advisors LP, any of its Subsidiaries, or to such
     Seller's knowledge, any other person "associated" (as defined under the
     Investment Advisers Act) with Advisors LP or any of its Subsidiaries, has
     been convicted of any crime or has been subject to any disqualification
     that would be a basis for denial, suspension, or revocation of registration
     of an investment adviser under Section 203(e) of the Investment Advisers
     Act or Rule 206(4) - 4(b) thereunder or of a broker-dealer under Section 15
     of the Exchange Act during the five-year period immediately preceding the
     date hereof; and, to the knowledge of such Seller, there is no basis for,
     or proceeding or investigation that could reasonably be expected to become
     the basis for, any such disqualification, denial, suspension or revocation;

          (ii) Sponsored Non-Registered Investment Companies.
               ---------------------------------------------

               (A)(1) each Sponsored Non-Registered Investment Company that is a
     juridical entity has been duly organized, and is validly existing and in
     good standing under the laws of the jurisdiction of its organization and
     has all requisite corporate partnership, limited liability company, or
     similar power and authority, and possesses all rights, licenses,
     authorizations and approvals necessary to entitle it to use its name, to
     own, lease or otherwise hold its properties and assets and to carry on its
     business as it is now conducted, and is duly qualified, licensed or
     registered to do business in each jurisdiction where it is required to do
     so under Applicable Law (except where the failure to do so is not material
     to its business) and (2) each Sponsored Non-Registered Investment Company
     is in substantial compliance with the terms and conditions of its
     Constituent Documents;

               (B)(1) all outstanding shares or units of each Sponsored Non-
     Registered Investment Company have been issued and sold in substantial
     compliance with Applicable Law; and (2) each Sponsored Non-Registered
     Investment Company, since inception of operations, has been operated and is
     currently operating in substantial compliance with its respective
     investment objectives and policies and Applicable Law;

                                      -53-
<PAGE>

               (C)  it has delivered or made available to AZOA complete and
     correct copies of the audited financial statements for each of the
     Sponsored Non-Registered Investment Companies for each of their respective
     fiscal years ending in 1997 and 1998, and will deliver to AZOA complete and
     correct copies of any financial statements (whether quarterly or annual)
     prepared in the ordinary course for periods ending after the date hereof
     and before the Closing Date promptly upon such financial statements
     becoming available (the "Sponsored Non-Registered Investment Company
                              -------------------------------------------
     Financial Statements").  None of such Sponsored Non-Registered Investment
     --------------------
     Companies has incurred any obligation or liability (contingent or other)
     that, individually or in the aggregate, is or would be, when accrued,
     material to the financial condition or results of operations of such
     Sponsored Non-Registered Investment Company, except as reflected in the
     Sponsored Non-Registered Investment Company Financial Statements or as may
     be incurred in the ordinary course of investment operations, consistent
     with past practice, since the date of the most recent Sponsored Non-
     Registered Investment Company Financial Statement;

               (D)  each of the Sponsored Non-Registered Investment Companies
     has timely filed any documents required to be filed with applicable
     regulatory or other Governmental Authorities (except where the failure to
     timely file would not have a material adverse effect on its business or
     operations), and such documents have been prepared in substantial
     compliance with Applicable Law;

               (E)  none of the Sponsored Non-Registered Investment Companies
     has been enjoined, indicted, convicted or made the subject of disciplinary
     proceedings, consent decrees or administrative orders on account of any
     violation of the Securities Laws;

               (F)  each Investment Company Board of any Sponsored Non-
     Registered Investment Company having such a Board operates in substantial
     conformity with all requirements and restrictions applicable to such
     Sponsored Non-Registered Investment Company under all Applicable Laws to
     which such Sponsored Non-Registered Investment Company is subject;

               (G)  as of the Closing Date, the resolutions of each Board of a
     Sponsored Non-Registered Investment Company, including approval of new
     Advisory Agreements or transfer of existing Advisory Agreements, were duly
     adopted by each such Board by the requisite affirmative vote, and such
     resolutions remain in full force and effect;

                                      -54-
<PAGE>

                 (H)  as of the Closing Date, no further action by the Board of
     any Sponsored Non-Registered Investment Company or by the shareholders of
     any such Sponsored Non-Registered Investment Company is required in
     connection with the transactions contemplated by this Agreement and the
     other Transaction Documents;

          (iii)  Sponsored Registered Investment Companies.
                 -----------------------------------------

                 (A)  each Sponsored Registered Investment Company is, and at
     all times required under the Securities Laws has been, duly registered with
     the SEC as an investment company under the Investment Company Act; and each
     Sponsored Registered Investment Company is in substantial compliance with
     the terms and conditions of its Constituent Documents.

                 (B)  Advisors LP has delivered or made available to AZOA
     complete and correct copies of the audited financial statements for each of
     the Sponsored Registered Investment Companies for each of their respective
     fiscal years ending in 1997 and 1998, and will deliver or make available to
     AZOA complete and correct copies of any interim financial statements
     (whether quarterly or annual) prepared in the ordinary course for periods
     ending after the date hereof and before the Closing Date promptly upon such
     financial statements becoming available (the "Sponsored Registered
                                                   --------------------
     Investment Company Financial Statements").  None of the Sponsored
     ---------------------------------------
     Registered Investment Companies has incurred any obligation or liability
     (contingent or other) that, individually or in the aggregate, is or when
     accrued, would be, material to the financial condition or results of
     obligations of such Sponsored Registered Investment Company, except as
     reflected in its Investment Company Financial Statements or as may be
     incurred in the ordinary course of its investment operations, since the
     date of the most recent Sponsored Registered Investment Company Financial
     Statement;

                 (C)(1) it has delivered or made available to AZOA complete and
     correct copies of each Advisory Agreement in effect on the date hereof
     between Advisors LP or any of its Subsidiaries and a Sponsored Registered
     Investment Company or any other Registered Investment Company; (2) each
     such Advisory Agreement and any subsequent renewal has been duly
     authorized, executed and delivered by Advisors LP or such Subsidiary, as
     the case may be, the Registered Investment Company and, to the knowledge of
     such Seller, as the case may be, each other party thereto, if any; and is a
     valid and legally binding agreement, enforceable against Advisors LP or
     such Subsidiary, as the case may be, and, to the knowledge of each Seller,
     each other party thereto (subject to the Bankruptcy and Equity Exception);
     and (3) in the case of each Advisory Agreement with a Sponsored Registered
     Investment Company has been adopted in compliance with

                                      -55-
<PAGE>

     Section 15 of the Investment Company Act, and if applicable, Rule 12b-1
     thereunder;

               (D)  each current prospectus (which term, as used in this
     Agreement, shall include any related statement of additional information),
     as amended or supplemented, relating to each Sponsored Registered
     Investment Company has been supplied or made available to AZOA; each such
     prospectus, as amended or supplemented, is in substantial compliance with
     the requirements of the Securities Act and the Investment Company Act,
     applicable state laws and, where applicable, the rules of the NASD.  None
     of such prospectuses, amendments or supplements, as of their respective
     dates, includes or included an untrue statement of a material fact or omits
     or omitted to state a material fact necessary in order to make the
     statements made therein, in the light of the circumstances under which they
     were made, not misleading;

               (E)  none of the Advisory Agreements with a Sponsored Registered
     Investment Company and Advisors LP or any Subsidiary of Advisors LP
     contains any undertaking by such entity to cap fees or to reimburse any or
     all fees thereunder, except as of the date hereof, (i) as may be disclosed
     in the applicable Investment Company Financial Statements or (ii) as has
     been Previously Disclosed, and except, as of any other date on or prior to
     the Closing Date as may be agreed from time to time with the Board of any
     Sponsored Registered Investment Company on terms deemed to be in the best
     interests of such Sponsored Registered Investment Company and its
     shareholders;

               (F)  a complete and correct copy of each distribution plan
     adopted by the Board of a Sponsored Registered Investment Company under
     Rule 12b-1 under the Investment Company Act ("12b-1 Plan") (or form of 12b-
                                                   ----------
     1 Plan adopted by similar series or classes of shares offered by more than
     one Investment Company) has been provided or made available to AZOA; and
     all payments due since December 31, 1997 under each distribution or
     principal underwriting agreement to which any Sponsored Registered
     Investment Company is a party have been made in compliance with the related
     12b-1 Plan; and the operation of each such 12b-1 Plan currently complies
     with Rule 12b-1.

               (G)  each of the Sponsored Registered Investment Companies has
     issued its shares, units or other interests and operated in substantial
     compliance with its investment objectives and policies and with Applicable
     Law, including Section 17 of the Investment Company Act; and each Board of
     a Sponsored Registered Investment Company has been established and operates
     in conformity with the requirements and restrictions of Sections 10 and 16
     of the Investment Company Act;

                                      -56-
<PAGE>

               (H)  as of the Closing Date, each Board of a Sponsored Registered
     Investment Company has taken such action required to be taken to approve
     new Advisory Agreements and to constitute itself in each case so as to
     comply with the provisions of Section 15 of the Investment Company Act and
     Rule 12b-1 thereunder;

               (I)  except as contemplated by Section 4.04(e), no further action
     of the Board of any Sponsored Registered Investment Company or of the
     shareholders of any such Sponsored Registered Investment Company is
     required in connection with the transactions contemplated by this Agreement
     and the other Transaction Documents;

               (J)  each of (1) the proxy solicitation materials to be
     distributed to the shareholders of each Sponsored Registered Investment
     Company in connection with the approvals described in Section 4.04(e) and
     (2) the materials provided to the Boards of the Sponsored Registered
     Investment Companies in connection with the approvals of the Board
     Resolutions have provided and will provide all information necessary in
     order to make the disclosure of information therein satisfy the
     requirements of Section 14 of the Exchange Act, Sections 15 and 20 of the
     Investment Company Act and the rules and regulations thereunder and such
     materials and information (except to the extent supplied by AZOA or its
     Affiliates) will be complete in all respects and will not contain (at the
     time such materials or information are distributed, filed or provided, as
     the case may be) any untrue statement of a material fact or omit to state
     any material fact necessary in order to make the statements made therein,
     in the light of the circumstances under which they were made, not
     misleading or necessary to correct any statement or any earlier
     communication with respect to the solicitation of a proxy for the same
     meeting or subject matter which has become false or misleading;

               (K)  except as Previously Disclosed and made available to AZOA,
     as of the date hereof, no exemptive orders have been obtained, nor are any
     requests pending therefor, with respect to any Sponsored Registered
     Investment Company under any of the Securities Laws;

               (L)  each of Advisors LP and any Subsidiary of Advisors LP that
     acts as an investment adviser or distributor to a Registered Investment
     Company has adopted a formal code of ethics and a written policy regarding
     insider trading, a complete and accurate copy of each of which has been
     provided or made available to AZOA and each of which substantially complies
     with Applicable Law.  The policies of Advisors LP and each such Subsidiary
     with respect to avoiding conflicts of interest are as set forth in the most
     recent Forms ADV thereof, as amended, complete and correct copies of which
     have been

                                      -57-
<PAGE>

     provided or made available to AZOA; and to such Seller's knowledge, there
     have been no material violations or allegations of violations of such
     policies that have occurred or been made that have not been addressed in
     accordance with these procedures;

               (M)  neither Advisors LP nor any of its Subsidiaries or
     Affiliates has any express or implied understanding or arrangement which
     would impose an unfair burden on any of the Sponsored Registered Investment
     Companies or would in any way violate Section 15(f) of the Investment
     Company Act as a result of any of the Transactions;

               (N)  neither Advisors LP, any of its Subsidiaries, the Sponsored
     Investment Companies or to the best of such Seller's knowledge, any other
     person "associated" (as defined under the Investment Advisers Act) with
     Advisors LP, any of its Subsidiaries or any of the Sponsored Registered
     Investment Companies, has for a period not less than five (5) years prior
     to the date hereof been convicted of any crime or is or has been subject to
     any disqualification that would be a basis for disqualification as an
     investment adviser to any Investment Company pursuant to Section 9(a) of
     the Investment Company Act, and to such Seller's knowledge there is no
     basis for, or proceeding or investigation that could become the basis for,
     any such disqualification.

     (bb) Environmental Matters.  PacMan and Partners LLC as to their respective
          ---------------------
Subsidiaries and each other Seller as to itself and its Subsidiaries hereby
represents and warrants that (i) it and each of its Subsidiaries is in
substantial compliance with applicable Environmental Laws; and (ii) neither it
nor any of its Subsidiaries has received any written claims or notices alleging
liability under any Environmental Law.

     (cc) Revenue Run-Rate.  Each Seller hereby represents and warrants that
          ----------------
Previously Disclosed is a complete and accurate calculation of the Revenue Run-
Rate as of September 30, 1999.


     3.04 Representations and Warranties of AZOA.  Subject to Sections 3.01 and
          --------------------------------------
3.02 and except as Previously Disclosed in a paragraph of its Disclosure
Schedule corresponding to the relevant paragraph in this Section 3.04, unless
otherwise provided herein, AZOA makes each of the following representations and
warranties as to itself, Allianz, Allianz GP Sub, Holdings LP Merger Sub and
Advisors LP Merger Sub, provided, however that no representation or warranty
                        --------
made pursuant to this Section 3.04 with respect or relating to either Holdings
LP Merger Sub, Allianz GP Sub, Holdings LP General Partner or Advisors LP Merger
Sub, as the case may be, will be deemed made

                                      -58-
<PAGE>

until the date on which such Person executes and delivers to Advisors LP the
Supplement to this Agreement contemplated by Section 2.06:

          (a)  Organization, Standing and Authority.
               ------------------------------------

               (i)   It is duly organized, validly existing and, if organized in
          a jurisdiction recognizing the concept of good standing, in good
          standing under the laws of its jurisdiction of organization, as
          Previously Disclosed, with full power and authority to own, lease or
          operate its assets and to carry on its business as currently
          conducted;

               (ii)  it is duly qualified to do business and is in good standing
          in each state of the United States where its ownership or leasing of
          property or assets or the conduct of its business requires it to be so
          qualified; and

               (iii) prior to the date hereof, AZOA has made available to
          Sellers a complete and correct copy, as of the date hereof, of the
          Constituent Documents of each such Person other than Allianz and, in
          the case of Allianz, will make available promptly after the date
          hereof its satzung, in each case as amended to such date.  As of the
          date hereof, each such Constituent Document and satzung is in full
          force and effect.

          (b)  Authority; Approval and Fairness.
               --------------------------------

               (i)   It has all requisite corporate, partnership or limited
          liability company power and authority and has taken all corporate,
          partnership or limited liability company action necessary in order to
          execute, deliver and perform its obligations under each of the
          Transaction Documents to which it is or will be a party and to
          consummate the transactions contemplated thereby; and

               (ii)  each Transaction Document to which it is a party is or,
          when executed and delivered in accordance with the terms thereof or of
          this Agreement and assuming the due authorization, execution and
          delivery by each other Person who is a party thereto, will be a valid
          and binding agreement of it, enforceable against it in accordance with
          its respective terms, subject to the Bankruptcy and Equity Exception.

          (c)  Regulatory Filings; No Defaults.
               -------------------------------

               (i)   Except as Previously Disclosed, no consents, registrations,
          approvals, permits or authorizations of, or notices, reports,
          registrations or

                                      -59-
<PAGE>

          other filings with, any Authority are required to be made or obtained
          by it in connection with the execution, delivery or performance by any
          such Person of this Agreement or any other Transaction Document to
          which it is a party, or to consummate the transactions hereunder or
          thereunder except for filings to be made under the HSR Act and the
          filings required pursuant to Sections 2.01(b) and 2.03(b); and

               (ii)  except as Previously Disclosed, the execution and delivery
          by it of each of the Transaction Documents to which it is a party does
          not, and, subject to the satisfaction of Section 3.04(c)(i) above, the
          consummation of the transactions thereunder will not, constitute or
          result in a breach or violation of, or a default under, the
          Constituent Documents of any such Person.

          (d)  Capitalization of Allianz.
               -------------------------

               (a)  As of September 15, 1999, the capital stock of Allianz
          amounted to (Euro) 627,891,200, subdivided into 245,270,000 registered
          no-par-value shares issued and outstanding which are only transferable
          with the approval of Allianz;

               (b)  as of September 15, 1999, the authorized unissued capital
          and the conditionally authorized capital of Allianz were as follows:
          authorized unissued capital I of (Euro) 135,492,348.52; authorized
          unissued capital II of (Euro) 30,677,512.87; authorized unissued
          capital III of (Euro) 51,129,188.12; authorized unissued capital IV of
          (Euro) 2,469,521.77; authorized unissued capital V of (Euro)
          2,556,459.41; and conditionally increased capital of (Euro)
          10,240,000; and

               (c)  each of the outstanding Allianz shares was duly authorized
          and validly issued, and is fully paid, nonassessable and subject to no
          preemptive rights and was not issued in violation of any preemptive
          rights.

          (e)  Allianz Financial Statements.  Each of the audited consolidated
               ----------------------------
     financial statements of Allianz for the fiscal years ended December 31,
     1996, 1997 and 1998 as reported in Allianz's Annual Report for 1996, 1997
     and 1998, respectively, and the unaudited financial statement for the first
     half year of 1999 has been made available to Advisors LP.  Each of the
     consolidated balance sheets included therein (including the related notes)
     fairly presents the financial condition of Allianz, as of its date, and
     each of the consolidated income statements and cash flow statements
     included therein (including the related notes) fairly presents the results
     of operations and cash flow, respectively, of Allianz, for

                                      -60-
<PAGE>

     the periods set forth therein, in each case in accordance with the
     applicable German accounting rules and, in the case of the audited
     consolidated financial statements for the fiscal year ended December 31,
     1998, also in accordance with the standards set by the International
     Accounting Standards Committee consistently applied during the periods
     involved, except as may be noted therein.

          (f)  Qualifications.  Neither it, nor, to its knowledge, any person
               --------------
     "associated" (as defined in the Investment Advisers Act) with it, is, as of
     the date hereof, ineligible to serve as an investment adviser to any
     Investment Company pursuant to Section 9(a) of the Investment Company Act
     or is subject to potential disqualification to serve as an investment
     adviser pursuant to Section 203 of the Investment Advisers Act or as an
     associated person to a registered investment adviser, or under Rule 206(4)-
     3 or is the subject of a rebuttable presumption under Rule 206(4)-4(b) of
     the Investment Advisers Act.

          (g)  Investment Company Act.  As of the date hereof, except as
               ----------------------
     Previously Disclosed, neither Allianz nor, to the knowledge of AZOA, any
     Subsidiary of Allianz that is part of the Asset Management Division of
     Allianz has entered into any Contract (disregarding for this purpose any of
     the Transaction Documents) which would impose an "unfair burden" on any of
     the Sponsored Investment Companies of Advisors LP after the Closing.

          (h)  Absence of Certain Changes.  Since December 31, 1998, as of the
               --------------------------
     date hereof, no event which has resulted in or could reasonably be expected
     to result in a Material Adverse Effect has occurred.

          (i)  ERISA.  No person who is an "affiliate" of AZOA within the
               -----
     meaning of Section V(c)(i) of Department of Labor Prohibited Transaction
     Exemption 84-14 ("PTE 84-14") has been convicted of, or pleaded guilty to,
                       ---------
     a crime described in Section I(g) of PTE 84-14.


                                  ARTICLE IV

                                   Covenants

      4.01 Conduct Prior to Closing.  Each Seller other than PacMan and Partners
           ------------------------
LLC as to themselves shall, and each Seller shall cause each of its Subsidiaries
to, conduct its business and each of their respective businesses, as the case
may be, in the ordinary and usual course and to preserve its business
organization and their respective business organizations and assets intact and
maintain existing relations and goodwill with customers, suppliers,
distributors, creditors, lessors, employees and business associates.

                                      -61-
<PAGE>

Without limiting the generality of the foregoing, from the date hereof until the
Effective Time, except as contemplated in any other Transaction Document or as
Previously Disclosed, each such Seller other than PacMan and Partners LLC as to
themselves, shall not, and each Seller shall cause each of its Subsidiaries (as
to PacMan, only including Holding LLC and its Subsidiaries) not to, do any of
the following without the prior written consent of AZOA, which shall not be
unreasonably withheld:

          (a)  issue, sell, pledge, grant, allocate, dispose of or encumber any
     Equity Interests in it or any of its Subsidiaries or any options, warrants,
     conversion or other rights or understandings of any kind, contingent or
     otherwise, to purchase any such Equity Interests;

          (b)  admit any new partner or member;

          (c)  directly or indirectly, adjust, split, combine or reclassify any
     of its Equity Interests;

          (d)  declare, set aside, make or pay any dividend or other
     distribution in cash, stock or property in respect of its Equity Interests,
     or repurchase, redeem or otherwise acquire, directly or indirectly, any of
     its Equity Interests;

          (e)  other than in the ordinary course of its business transfer,
     lease, license, guarantee, sell, mortgage, pledge, dispose of or encumber
     any of its or their material property or assets, tangible or intangible, or
     incur or modify any material indebtedness or other liability;

          (f)  make, authorize or commit for any capital expenditures other than
     in the ordinary course of business or their respective businesses, as the
     case may be, or, by any means, make any acquisition of, or investment in,
     assets or stock of any other Person or entity, provided that the investment
                                                    --------
     restrictions contained in this clause (f) shall not apply to capital
     expenditures or investments made in the ordinary course of business;

          (g)  subject to its fiduciary duties, propose that any action be taken
     by the Board of a Sponsored Investment Company, other than actions in the
     ordinary course of business that are not adverse to the interests of
     Advisors LP or Subsidiaries;

          (h)  terminate, establish, adopt, enter into, make any new grants or
     awards under, amend or otherwise modify any Compensation and Benefit Plan,
     including any agreement entered into pursuant to any Compensation and
     Benefit Plan;

                                      -62-
<PAGE>

           (i)  amend, supplement or restate its or any of its Subsidiaries'
     Constituent Documents, as the case may be, or enter into any Written
     Consents which in effect amend, supplement or restate such Constituent
     Documents;

           (j)  implement or adopt any change in any respect of its accounting
     practices, policies or principles other than as may be required by GAAP;

           (k)  make or revoke any Tax election;

           (l)  enter into any Contract that would constitute a Key Contract
     with any other Seller or any Affiliate or Subsidiary of any Seller, or make
     any amendment or modification to any such agreement except in the ordinary
     course of business; or

           (m)  authorize or enter into an agreement to do any of the foregoing.

      4.02 Acquisition Proposals.  Each of the Sellers agrees that it will not
           ---------------------
and will cause each of its Subsidiaries, if any, and its and any such
Subsidiaries' respective executive officers and directors not to, and each such
Seller agrees to direct its and any such Subsidiaries' employees, agents and
representatives (including, without limitation, any investment banker, attorney
or accountant retained by it or any of its Subsidiaries not to initiate or
solicit directly or indirectly, any inquiries or the making of any proposal or
offer (including, without limitation, any proposal or offer to stockholders,
members or unitholders) with respect to a merger, reorganization, share
exchange, consolidation or similar transaction involving, or any purchase of all
or any significant portion of the assets or any Equity Interests in, any Seller
or any of its Subsidiaries (in the case of PacMan, only including Holding LLC
and its Subsidiaries) other than PIMCO Trust Company and Columbus Circle Trust
Company (each such Person being referred to in this Section 4.02(a) as a
"subject Person" and any such proposal or offer being hereinafter referred to as
 --------------
an "Acquisition Proposal") or directly or indirectly engage in any negotiations
    --------------------
concerning, or provide any confidential information or data to, or have any
discussions with, any Person relating to an Acquisition Proposal, or otherwise
facilitate any effort or attempt to make or implement an Acquisition Proposal;
provided, however, that nothing contained in this Section 4.02 shall prevent any
- --------  -------
Seller or its managing member, general partner or management board from (A) in
the case of Holdings LP or its management board or representatives, complying
with Rule 14e-2 promulgated under the Exchange Act with regard to an Acquisition
Proposal or providing any other legally required disclosure to the partners of
Advisors LP and Holdings LP; (B) providing information to, or engaging in any
negotiations or discussions with, any Person who has made an unsolicited bona
                                                                         ----
fide written Acquisition Proposal; or (C) recommending such an Acquisition
- ----
Proposal to the members, partners or unitholders of such Seller and withdrawing
the prior recommendation of this Agreement, if and only to the extent that,

                                      -63-
<PAGE>

in each such case referred to in clause (B) or (C) above, such managing member,
general partner or board determines in good faith, after consultation with its
advisers, including its outside counsel, that such Acquisition Proposal, if
accepted, is reasonably capable of being consummated, taking into account all
legal, financial and regulatory aspects of the proposal and would, if
consummated, result in a transaction more favorable to such Seller's members or
unitholders, as the case may be, from a financial point of view than the
transactions contemplated by this Agreement (any such more favorable Acquisition
Proposal being referred to in this Agreement as a "Superior Proposal"). Each
                                                   -----------------
Seller agrees that it will notify Allianz and AZOA promptly (within one business
day of receipt) if any such inquiries, proposals or offers are received by, any
such information is requested from, or any such discussions or negotiations are
sought to be initiated or continued with, any of its representatives indicating,
in connection with such notice, the name of such Person and the material terms
and conditions of any proposals or offers and thereafter shall keep Allianz and
AZOA reasonably informed on the status and terms of any such proposals or offers
and the status of any such discussions or negotiations.  Each such Seller shall,
and shall cause each Subsidiary to, immediately cease and cause to be terminated
any activities, discussions or negotiations conducted prior to the date of this
Agreement with any parties other than Allianz and AZOA with respect to any of
the foregoing and shall use its reasonable best efforts to enforce any
confidentiality or similar agreement relating to an Acquisition Proposal.

      4.03 Retention and Bonus Programs.  In connection with the Closing, (a)
           ----------------------------
PIMCO shall establish the PIMCO Non-Qualified Profit Sharing Plan, amending the
1994 Profit Sharing Plan, substantially on the terms described in Exhibit E, or
as otherwise agreed by AZOA and Partners LLC (the "PIMCO Non-Qualified Profit
                                                   --------------------------
Sharing Plan"; (b) Advisors LP shall establish the PIMCO Advisors LP Transition
- ------------
and Retention Plan and the PIMCO Advisors LP Retention Plan for Executives of
Pacific Investment Management Company, each substantially on the terms set forth
in Exhibits F and G, respectively, or as otherwise agreed by AZOA and Partners
LLC (the "Transition Retention Plan" and the "Retention Plan", respectively) (c)
          -------------------------           --------------
PIMCO and Advisors LP shall establish the PIMCO Class B Unit Purchase Plan,
substantially on the terms described in Exhibit H hereto (the "PIMCO Class B
                                                               -------------
Unit Purchase Plan") and (d) Advisors LP shall enter into employment contracts
- ------------------
substantially in the form of Exhibit I with Mr. Poovey and Exhibit J with
Messrs. Weil, Fitzgerald, Ward and Treadway.

      4.04 Filings, Other Actions; Notification.  (a)  Each of the Sellers and
           ------------------------------------
AZOA shall cooperate with each other and shall cause their respective
Subsidiaries to use, their respective reasonable best efforts to, and propose to
the Sponsored Investment Companies that they, take or cause to be taken all
actions, and do or cause to be done all things necessary, proper or advisable on
its part under the Transaction Documents and Applicable Laws to consummate and
make effective the Transactions as soon as

                                      -64-
<PAGE>

practicable, including preparing and filing as promptly as practicable all
documentation to effect all necessary notices, reports and other filings and to
obtain as promptly as practicable all consents, registrations, approvals,
permits and authorizations necessary or advisable to be obtained from any third
party and/or any Authority in order to consummate the Transactions. Subject to
Applicable Laws relating to the exchange of information, AZOA, Advisors LP,
Partners GP and PacLife shall, to the extent practicable, consult the other on
and obtain consent with respect to all the information relating to AZOA or the
Sellers, as the case may be, and any of their respective Subsidiaries that
appear in any filing made with, or written materials submitted to, any Authority
in connection with the Transactions. In exercising the foregoing right, AZOA and
the Sellers shall act reasonably and as promptly as practicable.

          (b)  AZOA and each of the Sellers shall, upon request by another
Party, cooperate with and furnish to such Party all information concerning
itself, its Subsidiaries, general partners, members, directors, officers and
unitholders and such other matters as may be reasonably necessary or advisable
in connection with any statement, filing, notice or application required to be
made by or on behalf of any of Allianz, AZOA, the Sellers, or any of their
respective Subsidiaries to any Authority in connection with the Transactions.

          (c)  AZOA and the Sellers shall keep the other apprised of the status
of matters relating to completion of the Transactions, including promptly
furnishing the other Party or Parties with copies of any material written
notices or other material communications received by AZOA, the Sellers or any of
their respective Subsidiaries, from any Authority with respect to the
Transactions.

          (d)  Each of the Sellers shall give prompt notice to AZOA and AZOA
shall give prompt notice to each of the Sellers of (a) any event or condition
that would cause any of the representations and warranties made by such Person
or any of its Subsidiaries party hereto contained herein no longer to be
complete and accurate in any material respect as of any date on or before the
Closing Date, (b) any failure on the part of such Person or such Subsidiaries to
comply with any of its material covenants or agreements contained herein at any
time on or before the Closing Date, (c) any notice of, or other communication
relating to, a material default or other event, which with notice or the lapse
of time or both would become a material default, received by such Person or any
of such Subsidiaries subsequent to the date of this Agreement and prior to the
Closing Date, under any Key Contract of any of them, (d) any material written
notice or other material communication from any third party alleging that the
consent of such third party is or may be required in connection with the
Transactions, and (e) any change that is reasonably likely to result in a
Material Adverse Effect.

                                      -65-
<PAGE>

          (e)  To the extent that the rights of any Seller, any Subsidiary
thereof or any Client under any agreement, including any Advisory Agreement, may
not be assigned by operation of law without the consent or approval of another
party thereto or terminates upon any assignment, each of the Sellers shall use
its reasonable best efforts to obtain, and to cause its Subsidiaries, if any, to
obtain, any such consent and its reasonable best efforts to obtain such
consents, in the aggregate, as are necessary to satisfy the condition set forth
in Section 5.02(c). Without limiting the generality of the foregoing, Advisors
LP and each of Partners GP and Holdings LP, as general partners of Advisors LP
as promptly as practicable shall (a) use, and use its reasonable best efforts to
cause each Sponsored Investment Company to use, its reasonable best efforts to
obtain, or cause to be obtained, all consents necessary to be obtained by
Advisors LP, any of its Subsidiaries or any of the Sponsored Investment
Companies in order to consummate the Transactions (including, to the extent
required by Applicable Law or Contract, the approval of each Investment Company
Board and shareholders or unitholders of each of the Sponsored Investment
Companies), (b) use its reasonable best efforts to cause each Registered
Investment Company to prepare, file with and cause to be cleared by the SEC and
all other Authorities having jurisdiction thereover, as promptly as practicable
after the date hereof, all proxy solicitation materials required to be
distributed to shareholders of the Registered Investment Companies with respect
to the actions recommended for shareholder approval by the Investment Company
Boards and (c) use its reasonable best efforts to cause each Registered
Investment Company to mail such proxy solicitation materials to such
shareholders promptly after clearance by the SEC and cause to be submitted to a
meeting of shareholders of such Registered Investment Company as soon as
practicable after such mailing the proposals described in clause (ii), above,
all such consents and such proxy solicitation, to be in form and substance
reasonably satisfactory to AZOA and in compliance with Section 3.03(aa).

     4.05 Investment Company Matters.
          --------------------------

          (a)  Prior to the Closing, each of the Parties  shall use its
reasonable best efforts to ensure compliance with Section 15(f) of the
Investment Company Act, so that the transactions contemplated by this Agreement
will be in compliance at the Closing with such Section 15(f), including, to
assure that on the Closing Date at least 75% of the board of directors or
trustees of each Registered Investment Company are not "interested persons" (as
defined in the Investment Company Act) of Advisors LP or Allianz.

          (b)  Each of the Parties agrees following the Closing to use their
respective reasonable best efforts to assure compliance with the conditions of
Section 15(f) of the Investment Company Act as it applies to the Transactions.
Notwithstanding anything to the contrary contained herein, the covenants of the
Parties contained in this Section 4.05(b) are intended only for the benefit of
the Parties and holders of their

                                      -66-
<PAGE>

respective Equity Interests immediately prior to the Effective Time and for no
other Person.

          (c)  Advisors LP and each of Partners GP and Holdings LP, as general
partners of Advisors LP, shall use, and shall cause Advisors LP's Subsidiaries
to use, subject to any fiduciary requirements to the Sponsored Registered
Investment Companies, their reasonable best efforts to ensure that the Sponsored
Registered Investment Companies take no action that would (a) prevent any
Sponsored Registered Investment Company from qualifying as a "regulated
investment company," within the meaning of Section 851 of the Code, (b) with
respect to the Sponsored Non-Registered Investment Companies that are currently
taxed as partnerships, take no action that would cause such a Sponsored Non-
Registered Investment Company to be subject to taxation on a net income basis
under the Code or (c) be inconsistent with any Sponsored Registered Investment
Company's prospectus or other offering document and other offering, advertising
and marketing materials.

     4.06 Advisory Agreements.  Unless otherwise previously agreed to by AZOA,
          -------------------
Advisors LP shall and shall cause each Subsidiary of Advisors LP that is a
registered investment adviser to notify each Client, subject to Section 4.04(e)
with respect to the Registered Investment Companies, of the Transactions and to
use its reasonable best efforts to obtain, prior to the Closing Date, the
consent of each such Client (whether by affirmative consent or negative consent,
as applicable) to the "assignment" (as such term is used in the Investment
Advisers Act) of its Advisory Agreement as a result of the Transactions in
accordance with the Investment Advisers Act.  Each of the Sellers shall
cooperate and consult with AZOA regarding material written communications with
Clients concerning the obtaining of such consents.

     4.07 Taxation.
          --------

          (a)  From and after the Closing Date, all Tax examinations, audits and
contests relating to periods or partial periods ending prior to or on the
Closing Date relating to Advisors LP or any of its Subsidiaries, Holdings LP,
Partners GP or Holding LLC (such entities, the "Acquired Entities"), shall be
                                                -----------------
controlled jointly by PacMan and the MD Representatives.

          (b)  AZOA will prepare and file, or cause to be prepared and filed,
all Tax Returns that include the business and operations of the Acquired
Entities for any period or partial period ending prior to or on the Closing
Date; provided, however, that (i) PacMan and the MD Representatives shall have
the right to review and approve such Tax Returns prior to filing and (ii) all
such Tax Returns shall, to the extent not prohibited by applicable Tax law, be
prepared and filed on a basis consistent in all material respects with the Tax
Returns of the applicable Acquired Entity as prepared and filed in prior

                                      -67-
<PAGE>

periods. Prior to filing such Tax Returns, AZOA will make any changes to such
Tax Returns as are reasonably requested by PacMan or the MD Representatives, and
for such purposes any such request shall be deemed reasonable to the extent it
requests conformity to prior Tax Return positions as required under clause (ii)
of the preceding sentence.

          (c)  Each of Advisors LP, any Subsidiary of Advisors LP that is
treated as a partnership for U.S. federal income tax purposes, Holdings LP,
Partners GP, Partners LLC, NFJ LP, Parametric LP and Cadence LP, shall make an
election, or continue in effect any election previously made, under Section 754
of the Code and any comparable provision of any other Tax law for the year in
which the Closing occurs.

          (d)  None of the Acquired Entities will make any Tax election, or
revoke any Tax election previously made, without the prior written consent of
AZOA.

          (e)  Each Seller agrees to take all actions described in Annex C.

     4.08 Access; Information.
          -------------------

          (a)  Each of Partners GP, Holdings LP, and Advisors LP agrees that
upon reasonable notice and subject to Applicable Laws relating to the exchange
of information, it shall afford or cause its Subsidiaries to afford Allianz,
AZOA and the officers, employees, counsel, financial advisors, auditors,
accountants and other authorized representatives of Allianz and AZOA
(collectively, the "Allianz Representatives"), such access throughout the period
                    -----------------------
prior to the Effective Time to the books, records (including, without
limitation, any Tax Returns and work papers of independent auditors), offices,
properties and personnel of such Person, its Subsidiaries and any Sponsored
Investment Company and to such other information as an Allianz Representative
may reasonably request and, during such period, it shall furnish promptly to
Allianz and AZOA and, at the request of Allianz or AZOA, to any Allianz
Representatives (i) a copy of each report, schedule and other document filed by
it, its Subsidiaries or any such Sponsored Investment Company pursuant to the
requirements of federal or state securities laws, and (ii) all other financial
and operating data and other information concerning the business, properties,
assets and personnel of it, its Subsidiaries or any Sponsored Investment Company
as an Allianz Representative may reasonably request.

          (b)  Each of the Parties agrees that it will not, and will cause its
representatives not to, use any information obtained pursuant to this Section
4.08 (as well as any other information obtained in connection with its
consideration or consummation of any of the transactions contemplated by any of
the Transaction Documents, including any information obtained prior to the date
hereof) for any purpose unrelated to the consummation of the Transactions or the
Transaction Documents. Subject to the

                                      -68-
<PAGE>

requirements of law, each Party shall keep confidential, and shall cause its
representatives to keep confidential, all information and documents obtained
pursuant to this Section 4.08 (as well as any other information obtained in
connection with its consideration or consummation of any of the transactions
contemplated by any of the Transaction Documents) unless such information (1)
was already known to such Party, (2) becomes available to such Party from other
sources not known by such Party to be bound by a confidentiality obligation, (3)
is disclosed with the prior written approval of the Party to which such
information pertains or (4) is or becomes readily ascertainable from published
information or trade sources. In the event that this Agreement is terminated or
the Transactions shall otherwise fail to be consummated, each Party shall
promptly cause all copies of documents or extracts thereof containing
information and data as to any of the other Parties to be returned to the
appropriate Party. No investigation by any Party of the business and affairs of
any of the Parties and their respective Subsidiaries shall affect or be deemed
to modify or waive any representation, warranty, covenant or agreement in this
Agreement or any of the other Transaction Documents, or the conditions to any
Party's obligation to consummate any of the transactions contemplated by any of
the Transaction Documents.

     4.09  Publicity. The initial press release announcing the execution of this
           ---------
Agreement shall be a joint press release and thereafter PacMan, Advisors LP,
Partners LLC and AZOA shall consult with each other, to the extent practicable,
as applicable, prior to issuing any press releases or otherwise making public
announcements with respect to the Transactions or the Transaction Documents and
prior to making any filings with any Authority with respect thereto, except as
may be required by law or by obligations pursuant to any listing agreement with
or rules of any national securities exchange.

     4.10  Effect of Investigations.  No investigation by the Parties made
           ------------------------
heretofore or hereafter, or the provision of any documents, whether pursuant to
this Agreement or otherwise (including without limitation, any action taken by
or information provided to AZOA pursuant to the provisions of Section 4.08)
shall affect or be deemed to modify any of the representations and warranties of
any of the Parties which are contained herein and each such representation and
warranty shall survive such investigation.

     4.11  Takeover Statutes.  If any Takeover Statute is or may become
           -----------------
applicable to any of the Transactions, each of the Sellers and their respective
boards of directors, general partners, managing members or managing boards, as
applicable, shall grant such approvals and take such actions as are necessary so
that such transactions may be consummated as promptly as practicable on the
terms contemplated by the Transaction Documents, and otherwise act to eliminate
or minimize the effects of such statute or regulation on such Transactions.

                                      -69-
<PAGE>

     4.12  Reasonable Best Efforts.
           -----------------------

           (a) Subject to the terms and conditions of this Agreement, each of
the Sellers shall, shall use its reasonable best efforts to cause each of its
Subsidiaries, if any, and shall use its reasonable best efforts to cause each of
the Sponsored Investment Companies, to take, and AZOA shall, and shall use its
reasonable best efforts to cause each of its Subsidiaries that is a party hereto
to, take, or cause to be taken, all actions, and shall do, or cause to be done,
all things necessary, proper or desirable, or advisable under Applicable Laws,
so as to fulfill all conditions and obligations on its part to be performed or
fulfilled under the Transaction Documents, to permit consummation of the
Transactions as promptly as practicable and otherwise to enable consummation of
the Transactions, and shall cooperate fully with each of the other Parties to
that end.

           (b) To the extent that any consent, waiver or agreement of a Party is
necessary to permit or effect any transaction contemplated by this Agreement and
the other Transaction Documents, each Party hereby grants or provides such
consent, waiver or agreement.

     4.13  Other Agreements.  Prior to or in connection with the Closing each of
           ----------------
the Sellers and AZOA shall, and shall cause their respective Subsidiaries to,
take the following actions, to the extent applicable:

           (a) Each Seller shall cooperate with the other Sellers and use its
     reasonable best efforts to cause the arrangements for New Class B Units of
     Advisors LP, substantially in the terms set forth on Exhibit K, to be
     offered as provided therein and to cause such arrangements to be accepted;
     and Holdings LLC (as of such time a Subsidiary of AZOA) shall enter into an
     amendment to each ETA of Holdings LLC with each consenting PIMCO MD who is
     an ETA Holder (each, an "ETA Amendment").
                              -------------

           (b) AZOA and PacMan shall enter into the Continuing Investment
     Agreement in the form of Exhibit L hereto or as otherwise agreed by AZOA
     and PacMan (the "Continuing Investment Agreement");
                      -------------------------------

           (c) AZOA, Advisors LP and PacMan shall enter into the Indemnification
     Agreement in the form of Exhibit M hereto or as otherwise agreed by AZOA,
     Advisors LP and PacMan (the "Indemnification Agreement"); and
                                  -------------------------

           (d) (i) Advisors LP and PIMCO shall enter into a limited liability
     company agreement of Pacific Investment Management Company in the form of
     Exhibit N hereto or as otherwise agreed by AZOA and Advisors LP (the "PIMCO
                                                                           -----

                                      -70-
<PAGE>

     LLC Agreement") in connection with the conversion of PIMCO into a Delaware
     -------------
     limited liability Company and Advisors LP and PIMCO Management shall obtain
     all requisite consents to enter into the PIMCO LLC Agreement and (ii)
     Advisors LP shall execute a written consent substantially on the terms set
     forth in Exhibit O hereto, or as otherwise agreed by AZOA and PIMCO (the
     "PIMCO Written Consent").
      ---------------------

     4.14 Organization of PacPartners.  Prior to Closing, Allianz GP Sub, as
          ---------------------------
managing member, and PacMan shall (i) organize PacPartners LLC as a limited
liability company under the DE LLC Law, pursuant to an operating agreement that
shall be reasonably acceptable to PacMan (the "PacPartners LLC Agreement"), or
                                               -------------------------
as otherwise agreed to by Allianz GP Sub and PacMan, pursuant to which each of
Allianz GP Sub and PacMan shall be a founding managing member, (ii) make an
initial capital contribution of $100 in exchange for one Class A LLC Unit to be
issued to Allianz Advisors LP Sub and one Class B LLC Unit to be issued to
PacMan and (iii) shall file of cause to be filed with the Secretary of State of
Delaware a Certificate of Formation in accordance with Section 18-201 of the DE
LLC Law.

     4.15 Disposition of Subsidiaries.  The Sellers shall use their reasonable
          ---------------------------
best efforts to cause Advisors LP and each other Seller, and each of their
respective Subsidiaries, to dispose of control of, and control of all of its
Equity Interests in, each of Columbus Circle Trust Company and PIMCO Trust
Company as soon as practicable, on terms that are reasonable in light of the
circumstances of the sale.  "Control" means control for applicable regulatory
                             -------
purposes.

     4.16 Restructurings.  Each of the Sellers shall cooperate with AZOA to
          --------------
restructure each of NFJ Investment Group, Parametric Portfolio Associates, and
Cadence Capital Management in a manner satisfactory to AZOA.

     4.17 Expenses.  Each Party will bear all expenses incurred by it in
          --------
connection with this Agreement and the Transactions; provided, however that (i)
                                                     --------  -------
AZOA shall bear 50% of the expenses incurred by Advisors LP in connection with
the solicitation of shareholders of Registered Investment Companies contemplated
by Section 4.01(e) and (ii) PacMan and AZOA shall each bear 50% of the expenses
incurred by Holdings LP in connection with the solicitation of Holdings LP
Unitholders.

     4.18 Subsidiary Action.  Whenever a Party has an obligation under this
          -----------------
Agreement to "cause" a Subsidiary of such Party or any of such Subsidiary's
managing directors, officers, directors or employees, to take any action, if and
to the extent that such Party's power and authority to cause such action to be
taken is limited by the terms of such Subsidiary's Constituent Documents, such
obligation of a Party shall be deemed an undertaking by such Party only to use
such Party's reasonable best efforts to cause

                                      -71-
<PAGE>

such action to be taken. To the extent that action on the part of a Subsidiary
of a Party is necessary in order for such Party to fulfill any of its
obligations under this Agreement, then each such obligation shall be deemed to
include an undertaking on the part of such Party to cause such Subsidiary to
take such necessary action.

     4.19 Holdings LP Unitholder Approval.  Each of the Sellers shall take, in
          -------------------------------
accordance with Applicable Law and each of their and Holdings LP's Constituent
Documents, all action necessary to convene an appropriate meeting of Holdings LP
Unitholders to consider and vote upon the approval and adoption of this
Agreement and the Holdings LP Merger and any other matters required to be
approved by Holdings LP Unitholders for consummation of the Holdings LP Merger
(including any adjournment or postponement thereof, the "Holdings LP Unitholders
                                                         -----------------------
Meeting") as promptly as practicable after the Proxy Statement is cleared by the
- -------
SEC.  Partners GP, as General Partner of Holdings LP, shall recommend (subject
only to its making a good faith recommendation in favor of a Superior Proposal
permitted under Section 4.02(C) and, in connection therewith, withdrawing any
prior recommendation in connection with the Holdings LP Merger) and Holdings LP
shall take all reasonable, lawful action to solicit, such approval by Holdings
LP Unitholders.

     4.20 Proxy Statement.  (a) Each of the Sellers shall cooperate with
          ---------------
Holdings LP to, and Holdings LP shall, prepare a proxy statement to be filed by
Holdings LP with the SEC in connection with the Holdings LP Merger (including
all other proxy solicitation materials of Holdings LP, the "Proxy Statement").
                                                            ---------------
Each of the Parties agrees to cooperate, and to cause its Subsidiaries to
cooperate, with the other, its counsel and its accountants, in preparation of
the Proxy Statement; and, promptly after clearance by the SEC, Holdings LP shall
mail the Proxy Statement to the Holdings LP Unitholders.

     (b)  Each of the Parties agrees, as to itself and its Subsidiaries, that
none of the information supplied or to be supplied by it for inclusion or
incorporation by reference in the Proxy Statement and any amendment or
supplement thereto will, at the date of mailing to Holdings LP Unitholders and
at the time of the Holdings LP Unitholders Meeting, contain any statement,
which, at the time and in the light of the circumstances under which it is made,
is false or misleading with respect to any material fact, or which omits to
state any material fact necessary in order to make the statements therein not
false or misleading or necessary to correct any statement in any earlier
statement in the Proxy Statement or any amendment or supplement thereto. Each of
the Parties further agrees that if it shall become aware prior to the Effective
Date of any information furnished by it that would cause any of the statements
in the Proxy Statement to be false or misleading with respect to any material
fact, or to omit to state any material fact necessary to make the statements
therein not false or misleading, to promptly inform the other party thereof and
to take the necessary steps to amend or supplement the Proxy Statement.

                                      -72-
<PAGE>

     (c)   AZOA shall have the right to review in advance and to approve all the
information relating to AZOA and any of its Affiliates proposed to appear in the
Proxy Statement or any amendment or supplement thereto submitted to, the SEC in
connection with the Transactions contemplated by this Agreement.  In exercising
the foregoing right, AZOA shall act reasonably and as promptly as practicable.

     4.21  Indemnification; Directors' and Officers' Insurance.
           ---------------------------------------------------

     (a)   AZOA agrees that from the Effective Time, and for a period of six (6)
years thereafter, AZOA shall not, and shall cause each of its Subsidiaries not
to, amend or modify any provision of any partnership, limited liability company
or indemnification agreement pursuant to which any Seller or any of its
directors, officers, members, partners or other controlling persons is or may be
entitled to exculpation or indemnification; and AZOA shall cause Advisors LP to
honor any such provision and to pay any amounts to which such Seller or any of
such affiliates of such Seller would properly be entitled thereunder.

     (b)   AZOA acknowledges that Advisors LP intends to obtain an extension of
directors' and officers' liability insurance for partners, members, managing
members, directors and officers of Advisors LP , Partners LLC, Holdings LLC,
Holdings LP, PacMan and Partners GP  prior to the Effective Time (the "D&O
                                                                       ---
Insurance") for a premium of not more than $150,000 per annum and AZOA agrees
- ---------
that, for a period of six (6) years following the Closing, AZOA shall not take
any affirmative action which causes the termination or cancellation of such
extension policy unless AZOA shall replace such policy with comparable insurance
coverage.

     4.22  Further Assurances.  As of the Effective Time and following the
           ------------------
Closing Date, consistent with the terms and conditions hereof, AZOA shall, and
each of the Sellers shall and shall cause each of their respective Subsidiaries
to, and shall use reasonable best efforts to cause its Affiliates (including for
this purpose any Sponsored Investment Company) to, promptly execute, acknowledge
and deliver such instruments, certificates and other documents and take such
other action as a Party may reasonably require in order to carry out any of the
transactions contemplated by the Transaction Documents or for a Party to obtain
the benefits contemplated by any of the Transaction Documents. Following the
Closing Date, the Parties shall cooperate with one another to prepare and file
all documents and forms and amendments thereto as may be required by Applicable
Law with respect to the Transactions.

                                      -73-
<PAGE>

                                   ARTICLE V

                                  Conditions

     5.01 Conditions to Each Party's Obligation to Effect the Transactions.  The
          ----------------------------------------------------------------
respective obligation of each Party to effect the Transactions is subject to the
satisfaction or waiver at or prior to the Closing Date of each of the following
conditions:

          (a)  Governmental and Regulatory Consents.  The waiting period
               ------------------------------------
     applicable to the consummation of the Transactions under the HSR Act shall
     have expired or been terminated and, other than the filings provided for in
     Sections 2.03(b) and 2.04(b), all notices, reports, registrations and other
     filings required to be made prior to the Effective Time by the Sellers or
     Allianz or any of their respective Subsidiaries with, and all material
     consents, registrations, approvals, permits and authorizations required to
     be obtained prior to the Effective Time by the Sellers or Allianz or any of
     their respective Subsidiaries from, any Governmental Authority
     (collectively, "Consents") in connection with the execution and delivery of
                     --------
     this Agreement and the consummation of the Transactions by the Sellers and
     AZOA shall have been made or obtained, and all associated waiting periods
     shall have lapsed; and none of the foregoing shall contain any conditions,
     restrictions or requirements which would, following the Effective Time,
     have a Material Adverse Effect with respect to Advisors LP.

          (b)  Holdings LP Unitholder Approval.  This Agreement shall have been
               -------------------------------
     duly adopted by the affirmative vote of Holdings LP Unitholders required in
     accordance with Section 17-211 of the DE Partnership Law, other Applicable
     Laws and the Constituent Documents of Holdings LP.

          (c)  No Injunction.  No court or other Authority of competent
               -------------
     jurisdiction shall have enacted, issued, promulgated, enforced or entered
     any statute, law, ordinance, rule, regulation, judgment, decree, injunction
     or other order (whether temporary, preliminary or permanent) that is in
     effect and restrains, enjoins or otherwise prohibits consummation of the
     Transactions (collectively, an "Order").
                                     -----

     5.02 Conditions to Obligations of AZOA.  The obligations of AZOA, Allianz
          ---------------------------------
Asset Management, Allianz Advisors LP Sub and Allianz GP Sub to effect the
Transactions are also subject to the satisfaction or waiver by AZOA at or prior
to the Closing Date of the following conditions:

          (a)  Representations and Warranties. Subject to the standard set forth
               ------------------------------
     in Section 3.02, each of the representations and warranties of each of the
     Sellers

                                      -74-
<PAGE>

     set forth in Section 3.03, shall be true and correct as of the date of this
     Agreement and as of the Closing Date as though made on and as of the
     Closing Date (except that representations and warranties that by their
     terms speak as of the date of this Agreement or some other date shall be
     true and correct as of such date) and AZOA shall have received a
     certificate of an executive officer or manager of each of the Sellers to
     such effect.

          (b)  Performance of Obligations of the Sellers.  Each of the Sellers
               -----------------------------------------
     shall have performed in all material respects all obligations required to
     be performed by it under this Agreement and the Transaction Documents at or
     prior to the Closing Date, and AZOA shall have received a certificate of an
     executive officer or managing director of each of the Sellers to such
     effect.

          (c)  Consents Under Agreements.  The Sellers shall have obtained the
               -------------------------
     consent or approval of each Person whose consent or approval shall be
     required under any Contract to which any of the Sellers or any of their
     Subsidiaries is a party, except for (i) Advisory Agreements and (ii) such
     Contracts for which the failure to obtain such consent or approval,
     individually or in the aggregate, is not reasonably likely to have a
     Material Adverse Effect.

          (d)  Compliance with Section 15(f) of the Investment Company Act. At
               -----------------------------------------------------------
     the Effective Time: (i) at least seventy-five percent (75%) of the members
     of the Investment Company Boards of each Sponsored Registered Investment
     Company which has approved a new investment advisory contract shall not be
     "interested persons" (as such term is defined in the Investment Company
     Act) of that Subsidiary of Advisors LP that will act as investment adviser
     to such Investment Companies following the Effective Time), of Advisors LP
     or of any Affiliate of Advisors LP that was the investment adviser of any
     such Investment Company immediately preceding the Effective Time; and (ii)
     the requirements of Section 15(f)(1)(B) of the Investment Company Act shall
     have been complied with in that no "unfair burden" shall have been imposed
     on any of the Sponsored Registered Investment Companies as a result of this
     Agreement, the transactions contemplated hereunder, new Investment Company
     Advisory Agreements or otherwise.

          (e)  Continued Employment.  At the Effective Time, (i) (A) William H.
               --------------------
     Gross and William S. Thompson, and (B) at least 60% of the PIMCO MDs other
     than William H. Gross and William S. Thompson shall be employees of
     Advisors LP or its Affiliates or Subsidiaries, as the case may be, with
     executive responsibilities, and (ii) PIMCO shall have entered into
     Employment Agreements, substantially in the form attached hereto as Exhibit
     P, with each of William H. Gross and William S. Thompson (each an
     "Employment Agreement") and each
      --------------------

                                      -75-
<PAGE>

     such Employment Agreement shall be in full force and effect and shall not
     have been amended or modified without the prior written consent of AZOA.

          (f)  Revenue Run-Rate.  As of the Determination Date, the Revenue Run-
               ----------------
     Rate shall not be less than 75% of the Revenue Run-Rate at September 30,
     1999.

          (g)  Employee Benefit Plans.  (i) Each of the PIMCO Class B Unit
               ----------------------
     Purchase Plan and the PIMCO Non-Qualified Profit Sharing Plan shall have
     been established by PIMCO, (ii) the Transition Retention Plan shall have
     been established by Advisors LP; and (iii) the PIMCO Written Consent shall
     have been executed by PIMCO.

          (h)  Other Agreements; Consents and Waivers.
               --------------------------------------

               (a) Each PIMCO MD who is an ETA Holder shall have entered into an
          amendment to his ETA as contemplated by the MD Agreement and such
          amendment shall not have been terminated;

               (b) AZOA and PacMan shall have entered into the Continuing
          Investment Agreement and such Continuing Investment Agreement shall
          not have been terminated;

               (c) PacMan and AZOA shall have entered into the Indemnification
          Agreement and such Indemnification Agreement shall not have been
          terminated;

               (d) Advisors LP shall have entered into an Amendment to Unit
          Options Agreements with all of the PIMCO MDs who hold Unit Options
          under the Unit Incentive Plan, substantially in the form attached
          hereto as Exhibit Q the ("Option Modification Agreement") and such
                                    -----------------------------
          Option Modification Agreement shall not have been terminated;

               (e) Advisors LP and PIMCO Management shall have entered into the
          PIMCO LLC Agreement and Advisors LP and PIMCO Management shall have
          obtained all requisite consents to enter into the PIMCO LLC Agreement
          and eliminate the rights of third parties therein, and such PIMCO LLC
          Agreement shall not have been terminated;

               (f) PacMan and Allianz GP Sub shall have entered into the
          PacPartners LLC Agreement and PacMan and Allianz GP Sub shall have
          obtained all requisite consents to enter into the PacPartners LLC

                                      -76-
<PAGE>

          Agreement, and such PacPartners LLC Agreement shall not have been
          terminated;

               (g)  Advisors LP shall have either paid down, fully satisfied or
          obtained a waiver of the terms of Section 6.5(d) (Notice of Change of
          Control), Section 7.1 (Disposition of Assets; Mergers and
          Reorganizations), and Sections 10.1(c)(i) and (l) (Events of Default
          and Acceleration) of, the Long-Term Credit Agreement; and

               (h)  Advisors LP shall have fully prepaid or refinanced its
          obligations under, or obtained a waiver of the terms of Section 6.5(d)
          (Notice of Change of Control), Section 7.1 (Disposition of Assets;
          Mergers and Reorganizations), and Section 10.1(c)(i) and (l) (Events
          of Default and Acceleration) of, the Short-Term Credit Agreement.

          (i)  Disposition of Subsidiaries.  Each of the Sellers and each of
               ---------------------------
     their Subsidiaries shall have disposed of control of, and control of all of
     its Equity Interests in, each of Columbus Circle Trust Company and PIMCO
     Trust Company as set forth in Section 4.15.  "Control" means control for
     applicable regulatory purposes.

          (j)  Resignations.  At the request of AZOA, each Seller shall use its
               ------------
     reasonable best efforts to cause each managing director to resign as member
     of any management or executive committee or board of Advisors LP, Holdings
     LP, Partners GP and Holding LLC, each resignation to be effective at or
     prior to the Closing Date.

          (k)  Legal Opinion.  AZOA shall have received an opinion of Latham &
               -------------
     Watkins, dated the Closing Date, in a form reasonably satisfactory to AZOA,
     to the effect that (i) subject to the qualifications substantially similar
     to those contained in the opinion of Latham & Watkins to Advisors LP dated
     April 24, 1998 attached hereto as Exhibit R, Advisors LP is classified as a
     partnership for U.S. federal income tax purposes, (ii) Advisors LP was, for
     all relevant taxable periods prior to January 1, 1998, classified as an
     "existing partnership" within the meaning of Section 10211(c) of the
     Revenue Reconciliation Act of 1987 and Treasury Regulations Section 1.7704-
     2(b) and (iii) Holdings LP is classified as an "electing 1987 partnership"
     within the meaning of Section 7704(g)(2) of the Code.  In rendering such
     opinion, Latham & Watkins may rely on representations and warranties of
     Advisors LP and Holdings LP.

                                      -77-
<PAGE>

     5.03 Conditions to Obligations of the Sellers.  The obligation of the
Sellers to effect the Transactions is also subject to the satisfaction or waiver
by both PacMan and Partners LLC at or prior to the Effective Time of the
following conditions:

          (a)  Representations and Warranties.  The representations and
               ------------------------------
     warranties of AZOA set forth in Section 3.04, subject to the standard set
     forth in Section 3.02, shall be true and correct as of the date of this
     Agreement and as of the Closing Date as though made on and as of the
     Closing Date (except that representations and warranties that by their
     terms speak as of the date of this Agreement or some other date shall be
     true and correct as of such date) and Advisors LP shall have received a
     certificate of an executive officer of AZOA to such effect.

          (b)  Performance of Obligations of AZOA.  AZOA shall have performed in
               ----------------------------------
     all material respects all obligations required to be performed by it under
     this Agreement and the Transaction Documents at or prior to the Closing
     Date, and an officer of the Sellers shall have received a certificate of an
     executive officer to such effect.

          (c)  Support Agreements.  Allianz shall have delivered the Allianz
               ------------------
     Guarantee and the Allianz Guarantee shall not have been terminated or
     withdrawn.


                                  ARTICLE VI

                                  Termination

     6.01 Termination by Mutual Consent.  This Agreement may be terminated and
          -----------------------------
the Transactions may be abandoned at any time prior to the Effective Time by
mutual written consent of AZOA, PacMan and Partners LLC.

     6.02 Termination by Either AZOA or the Sellers.  This Agreement may be
          -----------------------------------------
terminated and the Transactions may be abandoned at any time prior to the
Effective Time by (i) AZOA or by (ii) Advisors LP, Holdings LP, PacMan and
Partners LLC if (a) the Transactions shall not have been consummated by
September 30, 2000 (the "Termination Date"), whether such date is before or
                         ----------------
after the date of approval by the Holdings LP Unitholders, (b) the approval of
the Holdings LP Unitholders required by Section 5.01(b) shall not have been
obtained at a meeting duly convened therefor or at any adjournment or
postponement thereof, or (c) any Order permanently restraining, enjoining or
otherwise prohibiting consummation of the Transaction shall become final and
non-appealable; provided that the right to terminate this Agreement pursuant to
                --------

                                      -78-
<PAGE>

clause (a) above shall not be available to any Party that has breached in any
material respect its obligations under this Agreement in any manner that shall
have proximately and substantially contributed to the occurrence of the failure
of the Transactions to be consummated.

     6.03 Termination by AZOA.  This Agreement may be terminated by AZOA and the
          -------------------
Transactions may be abandoned at any time prior to the Effective Time, whether
before or after the approval by the Holdings LP Unitholders referred to in
Section 5.01(b),

          (a)  if (i) Partners GP shall have failed to recommend or shall have
     withdrawn or adversely modified its approval or recommendation of this
     Agreement, failed to reconfirm its recommendation of this Agreement or the
     Holdings LP Merger within five business days after a written request by
     Holdings LP to do so, or recommended to Holdings LP Unitholders a Superior
     Proposal or (ii) there has been a breach by any Seller of any
     representation, warranty, covenant or agreement contained in this Agreement
     that (x) would entitle AZOA to assert that the conditions to its
     obligations hereunder set forth in Section 5.02(a) or (b) have not been
     satisfied and (y) is not curable or, if curable, is not cured within 30
     days after written notice of such breach is given by AZOA to the Party
     committing such breach; or

          (b)  if the Revenue Run-Rate is less than 75% of the Revenue Run-Rate
     as of September 30, 1999 at the end of two consecutive calendar months,
     provided, however, that if AZOA elects to exercise its termination right
     --------  -------
     pursuant to this clause (b), it shall give PacMan and Partners LLC prompt
     written notice of its intention to terminate (the "Termination Notice"),
                                                        ------------------
     which termination shall be effective upon receipt of the Termination
     Notice, provided, further, that if AZOA shall elect not to exercise its
             --------  -------
     termination right pursuant to this clause (b) this Agreement shall not
     terminate and shall remain in full force and effect and the provisions of
     Section 2.01(d)(i) shall be unaffected by such failure to exercise.

     6.04 Termination by the Sellers.  This Agreement may be terminated and the
          --------------------------
Transactions may be abandoned at any time prior to the Effective Time by the
written consent of PacMan and Partners LLC:

          (a)  if (i) the management board, general partner or managing member
     of any Seller authorizes such Seller to consummate or enter into a binding
     written agreement concerning, or to recommend, a transaction that PacMan
     and Partners LLC determine in good faith, after consultation with their
     advisers, constitutes a Superior Proposal, and such Seller notifies Allianz
     and AZOA in writing that it intends to enter into such an agreement,
     attaching the most current

                                      -79-
<PAGE>

     version of such agreement to such notice, (ii) AZOA does not make, within
     five business days of receipt of such Seller's written notification of its
     intention, an offer that the managing member, general partner or management
     board of such Seller determines, in good faith after consultation with its
     advisors, is at least as favorable, from a financial point of view, to the
     members, partners or unitholders, as the case may be, as the Superior
     Proposal and (iii) simultaneously with such termination such Seller pays or
     causes Advisors LP to pay to AZOA in immediately available funds the
     Termination Fee described in Section 6.06; or

          (b)  if there has been a breach by AZOA of any covenant,
     representation, warranty or agreement contained in this Agreement that (x)
     would entitle PacMan and Partners LLC to assert that the conditions to its
     obligations hereunder set forth in Section 5.03(a) or (b) have not been
     satisfied and (y) is not curable or, if curable, is not cured within thirty
     (30) days after written notice of such breach is given by the PacMan and
     Partners LLC.

     6.05 Effect of Termination and Abandonment.  In the event of termination of
          -------------------------------------
this Agreement and the abandonment of the Transactions pursuant to this Article
VI, this Agreement (other than as set forth in Sections 6.06 and 7.01) shall
become void and of no effect with no liability on the part of any Party (or of
any of its directors, officers, employees, agents, legal and financial advisors
or other representatives); provided, however, except as otherwise provided
                           --------  -------
herein, no such termination shall relieve any Party of any liability or damages
resulting from any wilful breach of this Agreement.

     6.06 Termination Fee.
          ---------------

          (a)  Upon the occurrence of a Fee Triggering Event, Advisors LP agrees
and each of the Sellers hereby agrees, jointly and severally, to pay or to cause
Advisors LP to pay AZOA, and AZOA shall be entitled to payment of, a fee of
$180,000,000 (the "Termination Fee").  Except as provided in Section 6.04(a),
                   ---------------
such payment shall be made to AZOA in immediately available funds within three
business days after the occurrence of the Fee Triggering Event.

          (b)  The term "Fee Triggering Event" shall mean any of the following
                         --------------------
events or transactions occurring on or after the date hereof:

          (1)  this Agreement is terminated by the Sellers pursuant to Section
     6.04(a); or

                                      -80-
<PAGE>

          (2)  this Agreement is terminated by AZOA pursuant to Section
     6.03(a)(i) and, within 12 months after such termination, a Seller enters
     into a binding agreement with any Person providing for a transaction
     implementing an Acquisition Proposal.

          (c)  Each of PacMan and Partners LLC shall notify AZOA promptly in
writing of the occurrence of any Fee Triggering Event.

          (d)  The payment by any Seller of the Termination Fee provided by this
Section 6.06 shall constitute liquidated damages for any breach by any of the
Sellers of this Agreement although a breach is not necessary for any payment to
be required to be made under this Section 6.06.

          (e)  Each of the Sellers acknowledges that the agreements contained in
this Section 6.06 are an integral part of the Transactions and that, without
these agreements, neither AZOA nor any of its Subsidiaries would have entered
into this Agreement or any of the other Transaction Documents; accordingly, if
Advisors LP fails, and the Sellers fail to cause Advisors LP, to promptly pay
the amount due pursuant to this Section 6.06, and, in order to obtain such
payment, AZOA or any of its Subsidiaries commences a suit which results in a
judgment against the Sellers for the Termination Fee, the Sellers shall pay to
AZOA its costs and expenses (including attorneys' fees) in connection with such
suit, together with interest on the amount of the Termination Fee at the prime
rate of Citibank N.A. in effect on the date such payment was required to be
made.


                                  ARTICLE VII

                           Miscellaneous and General

     7.01 Survival.  Each of the covenants of the Sellers and AZOA set forth in
          --------
Sections 4.05(b), 4.07, 4.17, 4.18 (but only with respect to actions to be taken
after Closing), 4.21 and 4.22 (but only with respect to actions to be taken
after Closing) shall survive the consummation of the Transactions until the
satisfaction of such covenants in accordance with each of their terms.  Each of
the representations and warranties of the Sellers and AZOA set forth in Sections
3.03 and 3.04, respectively, shall survive the earlier of March 31, 2001 and the
publication of the first annual audited financial statements of Advisors LP and
its Subsidiaries following the Closing, provided that the representations and
                                        --------
warranties contained in Section 3.03(t) (Taxes) shall survive until the
expiration of the relevant statutory periods.   Sections 7.01, 7.03, 7.04, 7.05,
7.08 and 7.10, Sections 4.08(b) (Access; Information), 4.17 (Expenses), 6.05
(Effect of Termination and Abandonment) and 6.06 (Termination Fee) shall survive
the termination

                                      -81-
<PAGE>

of this Agreement. All other covenants and agreements in this Agreement shall
not survive the termination of this Agreement.

     7.02 Waiver; Amendment.  Prior to the Effective Time, any provision of this
          -----------------
Agreement may be (i) waived by the Party benefitted by the provision, (ii)
amended or modified at any time, by an agreement in writing among the Parties
executed in the same manner as this Agreement or (iii) amended or modified by an
agreement in writing among AZOA, PacMan and Partners LLC executed in the same
manner as this Agreement, provided, that no such amendment or modification
                          --------
pursuant to clause (iii) shall (A) in the case of any such amendment or
modification proposed after the Holdings LP Unitholders shall have approved this
Agreement and the Holdings LP Merger at the Holdings LP Unitholders Meeting,
alter or change the amount or kind of consideration to be received by Holdings
LP Unitholders and holders of Advisors LP Units pursuant to this Agreement
without such Party's consent, (B) reasonably be expected to materially impede or
delay the consummation of any of the Transactions or (C) constitute a waiver of
any provision of this Agreement other than in accordance with clause (i) of this
section 7.02.

     7.03 Governing Law and Venue; Waiver of Jury Trial.
          ---------------------------------------------

          (a)  This Agreement shall be deemed to be made in and in all respects
shall be interpreted, construed and governed by and in accordance with the law
of the state of New York applicable to contracts made and to be performed
entirely within such state (except to the extent mandatory provisions of federal
law, the DE Partnership Law, the California Uniform Partnership Act or the DE
LLC Law are applicable).

          (b)  Each Party acknowledges and agrees that any controversy which may
arise under the Transaction Documents is likely to involve complicated and
difficult issues, and therefore each such Party hereby irrevocably and
unconditionally waives any right such Party may have to a trial by jury in
respect of any litigation directly or indirectly arising out of or relating to
the Transaction Documents, or the Transactions. Each Party certifies and
acknowledges that (i) no representative, agent or attorney of any other Party
has represented, expressly or otherwise, that such other Party would not, in the
event of litigation, seek to enforce the foregoing waiver, (ii) each Party
understands and has considered the implications of this waiver, (iii) each Party
makes this waiver voluntarily, and (iv) each Party has been induced to enter
into the Transaction Documents to which it is a Party by, among other things,
the mutual waivers and certifications in this Section 7.03.

     7.04 Notices.  Any notice, request, instruction or other document to be
          -------
given hereunder by any party to the others shall be in writing and delivered
personally or sent by registered or certified mail, postage prepaid, or by
facsimile:

                                      -82-
<PAGE>

          if to AZOA:
          ----------

          Allianz of America, Inc.
          55 Greens Farms Road - P.O. Box 5160
          Westport, CT 06881
          Attention:  David P. Marks
          Facsimile:  (203) 221-4933

          with a copy to:
          --------------

          Allianz AG
          Koniginstr. 28
          80802 Munchen
          Attention: Dr. Joachim Faber

          with a copy to:
          --------------

          Mark J. Menting, Esq.,
          Sullivan & Cromwell,
          125 Broad Street, New York, NY  10004
          Facsimile:  (212) 558-3588

          if to Advisors LP or Holdings LP:
          --------------------------------

          PIMCO Advisors L.P.
          800 Newport Center Drive
          Newport Beach, California 92660
          Attention: Kenneth M. Poovey
          Facsimile: (949) 219-2245

          with a copy to:
          --------------

          David C. Flattum, Esq.,
          Latham & Watkins
          650 Town Center Drive, Suite 2000,
          Costa Mesa, California 92626
          Facsimile: (714) 755-8290

          if to PacMan, Partners GP or Holding LLC:
          ----------------------------------------

          Pacific Asset Management, LLC
          700 Newport Center Drive, Suite 500

                                      -83-
<PAGE>

          Newport Beach, California 92660
          Attention: Tom Sutton
          Facsimile:  (949) 219-5400

          with a copy to:
          --------------

          Gerry L. Kenny, Esq.
          Gibson Dunn & Crutcher
          4 Park Plaza
          Irvine, California 92614
          Facsimile: (949) 451-4220

          if to Partners LLC or Partners GP:
          ---------------------------------

          Pacific Investment Management Company
          840 Newport Center Drive, Suite 360
          Newport Beach, California 92660
          Attention: Ernest L. Schmider
          Facsimile:  (949) 720-1376

          with a copy to:
          --------------

          John D. Hardy Jr., Esq.,
          O'Melveny & Myers LLP
          400 South Hope Street
          Los Angeles, California 90071
          Facsimile:  (213) 430-6407

or to such other persons or addresses as may be designated in writing by the
party to receive such notice as provided above.

     7.05 Entire Understanding; No Third Party Beneficiaries.  This Agreement
          --------------------------------------------------
and each of the other Transaction Documents represent the entire understanding
of the Parties with reference to the Transactions and supersede any and all
other oral or written agreements heretofore made.  Nothing in this Agreement
expressed or implied, is intended to confer upon any person, other than the
Parties or their respective successors, any rights, remedies, obligations or
liabilities under or by reason of this Agreement.

     7.06 Obligations of AZOA.  Whenever this Agreement requires a Subsidiary of
          -------------------
AZOA to take any action, such requirement shall be deemed to include an
undertaking on the part of AZOA to cause such Subsidiary to take such action.

                                      -84-
<PAGE>

     7.07 Transfer Taxes. Any liability arising out of any real estate transfer
          --------------
or gains tax, if applicable and due with respect to the Transactions shall be
borne by the appropriate Seller. All other transfer (including real estate
transfer), transfer gains, documentary, sales, use, stamp, registration and
other such Taxes and fees (including penalties and interest) incurred in
connection with the Transactions shall be paid by the appropriate Seller when
due.

     7.08 Interpretation.  The table of contents and headings herein are for
          --------------
convenience of reference only, do not constitute part of this Agreement and
shall not be deemed to limit or otherwise affect any of the provisions hereof.
Where a reference in this Agreement is made to a Section or Exhibit, such
reference shall be to a Section of or Exhibit to this Agreement unless otherwise
indicated.

     7.09 Assignment.  This Agreement shall not be assignable by operation of
          ----------
law or otherwise; provided, however, that AZOA may designate, by written notice
                  --------  -------
to Advisors LP, another wholly-owned direct or indirect subsidiary in lieu of
Advisors LP Merger Sub, Holdings LP Merger Sub or Allianz GP Sub to be merged
with Advisors LP, to be merged with Holdings LP and to enter into the relevant
Acquisitions, Distributions and Contributions, respectively, in which event all
references herein to Advisors LP Merger Sub, Holdings LP Merger Sub or Allianz
GP Sub, as the case may be, shall be deemed references to such other subsidiary,
except that all representations and warranties made herein with respect to
Advisors LP Merger Sub, Holdings LP Merger Sub or Allianz GP Sub, as the case
may be, as of the date of this Agreement shall be deemed representations and
warranties made with respect to such other subsidiary as of the date of such
designation and further, provided, however, that AZOA may assign, by written
                -------  --------
notice to Advisors LP, any or all of its rights and obligations under this
Agreement and any other Transaction Document to another direct or indirect
Subsidiary of Allianz, in which event all references herein to AZOA shall be
deemed to be references to such other subsidiary, except that all
representations and warranties made herein with respect to AZOA as of the date
of this Agreement shall be deemed representations and warranties made with
respect to such other Subsidiary as of the date of such designation.

     7.10 Counterparts.  This Agreement may be executed in any number of
          ------------
counterparts, each such counterpart being deemed to be an original instrument,
and all such counterparts shall together constitute the same agreement.

                                      -85-
<PAGE>

                                      Implementation and Merger Agreement



                    PIMCO ADVISORS L.P.


                    By:  PIMCO PARTNERS, G.P., California general
                         partnership, General Partner

                         By:  PIMCO PARTNERS, LLC, a California limited
                              liability company, General Partner



                              By:  /s/ William S. Thompson
                                   ------------------------------
                                   William S. Thompson
                                   Chief Executive Officer


                         By:  PIMCO HOLDING LLC, a Delaware limited
                              liability company, General Partner

                              By:  PACIFIC ASSET MANAGEMENT LLC, a
                                   Delaware limited liability company,
                                   Member

                                   By:  PACIFIC LIFE INSURANCE
                                        COMPANY, a California life
                                        insurance company, Member

                                        By:   /s/ Khanh T. Tran
                                              -----------------------------
                                              Khanh T. Tran
                                              Chief Financial Officer


                                        By:   /s/ Audrey L. Milfs
                                              -----------------------------
                                              Audrey Milfs
                                              Secretary
<PAGE>

                                          Implementation and Merger Agreement


                    By:  PIMCO ADVISORS HOLDINGS L.P., a Delaware limited
                         partnership, General Partner

                         By:  PIMCO PARTNERS, G.P., a California general
                              partnership, General Partner

                              By:  PIMCO PARTNERS, LLC, a California
                                   limited liability company, General Partner

                                   By:  /s/ William S. Thompson
                                      ---------------------------------------
                                        William S. Thompson
                                        Chief Executive Officer

                              By:  PIMCO HOLDING LLC, a Delaware
                                   limited liability company, General Partner

                                   By:  PACIFIC ASSET MANAGEMENT
                                        LLC, a Delaware limited liability
                                        company, Member

                                        By:  PACIFIC LIFE
                                             INSURANCE COMPANY, a
                                             California life insurance
                                             company, Member

                                             By:  /s/ Khanh T. Tran
                                                -----------------------------
                                                  Khanh T. Tran
                                                  Chief Financial Officer


                                             By:  /s/ Audrey L. Milfs
                                                -----------------------------
                                                  Audrey Milfs
                                                  Secretary
<PAGE>


                                             Implementation and Merger Agreement


                         PIMCO HOLDING LLC


                         BY: PACIFIC ASSET MANAGEMENT LLC, a Delaware
                             limited liability company, Member

                             By:  PACIFIC LIFE INSURANCE COMPANY, a
                                  California life insurance company, Member


                                  By:    /s/ Khanh T. Tran
                                         --------------------------
                                         Khanh T. Tran
                                         Chief Financial Officer


                                  By:    /s/ Audrey L. Milfs
                                         --------------------------
                                         Audrey Milfs
                                         Secretary


<PAGE>

                                             Implementation and Merger Agreement




                              PIMCO ADVISORS HOLDINGS L.P.


                              By:  PIMCO PARTNERS, G.P., a California general
                                   partnership, General Partner



                                   By:  PIMCO PARTNERS, LLC, a California
                                        limited liability company, General
                                        Partner



                                        By: /s/ William S. Thompson
                                           -------------------------------------
                                            William S. Thompson
                                            Chief Executive Officer



                                   By:  PIMCO HOLDING LLC, a Delaware limited
                                        liability company, General Partner



                                        By: PACIFIC ASSET MANAGEMENT LLC, a
                                            Delaware limited liability company,
                                            Member


                                            By: PACIFIC LIFE INSURANCE COMPANY,
                                                a California life insurance
                                                company, Member


                                                By:  /s/ Khanh T. Tran
                                                   -----------------------------
                                                    Khanh T. Tran
                                                    Chief Financial Officer



                                                By:  /s/ Audrey L. Milfs
                                                   -----------------------------
                                                    Audrey Milfs
                                                    Secretary
<PAGE>

                                             Implementation and Merger Agreement


                              ALLIANZ OF AMERICA, INC.


                              By:  /s/ Dr. Herming Schulte-Noelle
                                  ----------------------------------------
                                  Dr. Herming Schulte-Noelle
                                  President and Chief Executive Officer



                              By:  /s/ Dr. Diethart Breipohl
                                  ----------------------------------------
                                  Dr. Diethart Breipohl
                                  Authorized Agent
<PAGE>

                                             Implementation and Merger Agreement




                                   ALLIANZ ASSET MANAGEMENT INC.



                                   By:  /s/ Dr. Joachim Faber
                                       -------------------------------
                                       Dr. Joachim Faber
                                       President and Chief Executive Officer
<PAGE>

                                             Implementation and Merger Agreement

                              PACIFIC ASSET MANAGEMENT LLC


                              By:  PACIFIC LIFE INSURANCE COMPANY, a California
                                   life insurance company, Member


                                   By: /s/ Khanh T. Tran
                                      ----------------------------
                                      Khanh T. Tran
                                      Chief Financial Officer



                                   By: /s/ Audrey Milfs
                                      ----------------------------
                                      Audrey Milfs
                                      Secretary
<PAGE>

                                             Implementation and Merger Agreement


                         PIMCO PARTNERS, G.P.

                         By: PIMCO PARTNERS, LLC, a California limited liability
                             company, General Partner



                             By: /s/ William S. Thompson
                                 ----------------------------
                                 William S. Thompson
                                 Chief Executive Officer



                         By: PIMCO HOLDING LLC, a Delaware limited liability
                             company, General Partner



                             By: PACIFIC ASSET MANAGEMENT LLC, a Delaware
                                 limited liability company, Member



                                 By: PACIFIC LIFE INSURANCE COMPANY, a
                                     California life insurance company, Member



                                     By: /s/ Khanh T. Tran
                                        -------------------------------
                                        Khanh T. Tran
                                        Chief Financial Officer



                                     By: /s/ Audrey L. Milfs
                                        -------------------------------
                                        Audrey Milfs
                                        Secretary
<PAGE>

                                             Implementation and Merger Agreement


                         PIMCO PARTNERS LLC


                         By:   /s/ William S. Thompson
                             --------------------------
                             William S. Thompson
                             Chief Executive Officer


<PAGE>


                                             Implementation and Merger Agreement



                         PACIFIC INVESTMENT MANAGEMENT COMPANY



                         By:     /s/ William S. Thompson
                               ---------------------------
                               William S. Thompson
                               Chief Executive Officer



<PAGE>

                                                                    EXHIBIT 99.1


Unitholders' Contact:                            Media Contact:
PIMCO Advisors                                   Sitrick And Company
Kelli Powell                                     Steve Hawkins/Linda Press
800-387-4626                                     310-788-2850
www.pimcoadvisors.com
www.pimcofunds.com                               PIMCO Advisors L.P.
www.pimco.allianz.com                            Mark Porterfield
                                                 949-219-2240

                                                 Allianz AG
                                                 Richard Lips
                                                 011-49-89-3-800-5043


For Immediate Release
Photo attached - Caption: William Thompson (left), Chief Executive Officer and
William Gross, Chief Investment Officer of Pacific Investment Management
Company.

                Allianz AG to Purchase PIMCO Advisors Holdings

                           L.P. for $38.75 per Unit

Newport Beach, California, October 31, 1999 --- PIMCO Advisors Holdings L.P.
(NYSE: PA), its operating subsidiary PIMCO Advisors L.P. ("PIMCO Advisors") and
Allianz AG (EURO: ALV) announced today that they have reached a definitive
agreement for Allianz AG ("Allianz") to acquire majority ownership of PIMCO
Advisors, including all of the interests held at PIMCO Advisors Holdings L.P.
("PA Holdings"). Under the terms of the agreement, at the closing the units of
PA Holdings will be exchanged by way of a merger for $38.75 per unit in cash and
there will be no further public ownership of PIMCO Advisors. The transaction
values PIMCO Advisors at approximately $4.7 billion. Additionally, key employees
at each of PIMCO Advisors' investment units have significant profit-sharing and
retention arrangements to ensure continuity of the investment process and staff.
<PAGE>

     The acquisition is subject to the approval of the public unitholders of PA
Holdings, as well as to regulatory and client approvals and other customary
conditions, and is expected to be completed by the end of the first quarter of
2000.

     Allianz, the world's largest insurer by premium income, managed assets of
more than $403 billion as of December 31, 1998. PIMCO Advisors, the nation's
third largest publicly traded money management organization, presently manages
assets of more than $256 billion. Together, PIMCO Advisors and Allianz will
manage more than $650 billion, establishing the company as one of the world's
largest money management firms.

     Key terms of the acquisition agreement include:

     .    Pacific Investment Management Company, with fixed-income assets under
          management of $181 billion, will remain as a separate business
          subsidiary under the PIMCO name, heading the global fixed-income
          business of the combined companies, including more than $100 billion
          in Allianz fixed-income assets.

     .    William H. Gross will continue as Pacific Investment Management
          Company's Chief Investment Officer, under a new long-term employment
          contract.

     .    William S. Thompson, who will continue as Pacific Investment
          Management Company's Chief Executive Officer, will become President of
          Allianz Asset Management ("AAM") and Joachim Faber, of Allianz, will
          become Chairman of AAM.

     .    The PIMCO Funds will be offered primarily under the Allianz name in
          Europe, but in the United States the mutual funds will continue to be
          offered under the PIMCO Funds banner.



<PAGE>

     .    The equity operations of PIMCO Advisors, headlined by Oppenheimer
          Capital's $55 billion under management, will remain separately branded
          and managed by their current professionals as part of the Allianz
          group.

     .    Allianz will acquire all of the public and private ownership interests
          in PA Holdings and PIMCO Advisors except for Pacific Life Insurance
          Company's approximate interest of 30 percent.

     "To be successful in international markets and to remain a leader in the
US, a bond manager will need world-class credit research capabilities, highly
developed quantitative skills and a keen sense of relative value," said William
S. Thompson, Pacific Investment Management Company's Chief Executive Officer.
"However, to apply these skills successfully, the bond manager also requires in-
depth knowledge of local laws, accounting practices, market peculiarities and
worldwide business contacts," he added. "PIMCO has the former and Allianz the
latter, particularly in Europe, where the credit markets are set to explode with
growth. This is a very powerful combination."

     "Oppenheimer Capital has longstanding strengths and long-term potential as
a leading US equity manager," said Kenneth M. Poovey, Chief Operating Officer of
PIMCO Advisors. "Allianz gives Oppenheimer, and the other PIMCO Advisors equity
subsidiaries, the ability to offer successful investment strategies and products
to investors worldwide." After the combination, Poovey will join Udo Frank, of
Allianz, as co-head of equities at AAM.

     William Cvengros, Chief Executive Officer of PA Holdings, said "We are
extremely proud that since PIMCO Advisors' creation in 1994, pro forma assets
have grown from $100 billion to $256 billion today. Our rapidly growing PIMCO
Funds complex has become an industry leader in net inflows of assets, growing
from $10.7 billion in 1994 to $54.3 billion today. The result is that
<PAGE>

PA Holdings unitholders have received increasing distributions over this period,
and now will realize a unit price that is more than double PIMCO Advisors'
offering price of $18.95 in 1994. The combination with Allianz is a strong
affirmation of our strategy, and a compelling preview of successful money
management in the next decade."

     "We are delighted to welcome PIMCO Advisors into the Allianz group," said
Henning Schulte-Noelle, Chief Executive of Allianz AG. "For us, a joint future
with PIMCO represents the decisive step forward in our strategy of establishing
asset management as our third core business. By combining the expertise and
sales forces of PIMCO and Allianz, we are on our way to becoming one of the top
international providers of global asset management. This combination will create
enormous opportunities for our clients."

     PIMCO Advisors is one of the largest investment management companies in the
United States with more than $256 billion of assets under management. Its
investment advisor companies, led by Pacific Investment Management Company and
Oppenheimer Capital, are widely recognized for consistently posting attractive
performance and high quality service to more than 1,600 institutional clients
worldwide, including approximately one-third of the largest 100 corporations in
the United States. In addition, PIMCO Advisors and its subsidiaries manage a
family of 53 stock and bond mutual funds available to both retail and
institutional investors.

     With asset management as one of its three core businesses, Allianz AG, the
world's leading global insurance company, had $403 billion in assets under
management as of December 31, 1998. Gross premium income for the 1998 business
year was nearly $50 billion. Through subsidiaries, branch and representative
offices, partnerships and long-term equity interests, Allianz AG is represented
in 68 countries around the globe.
<PAGE>


     Except for the historical information and discussions contained herein,
statements contained in this news release may constitute "forward looking
statements" within the meaning of the Private Securities Litigation Reform Act
of 1995. These statements involve a number of risks, uncertainties and other
factors that could cause actual results to differ materially, including the
performance of financial markets, the investment performance of PIMCO Advisors
L.P.'s sponsored investment products and separately managed accounts, general
economic conditions, future acquisitions, competitive conditions and government
regulations, including changes in tax laws. Please refer to the reports that
PIMCO Advisors Holdings L.P. files with the Securities and Exchange Commission,
including but not limited to the company's annual report on form 10-K for the
year ended December 31, 1998. PIMCO Advisors Holdings L.P. cautions readers to
carefully consider such factors. Further, such forward-looking statements speak
only on the date at which such statements are made. PIMCO Advisors Holdings L.P.
undertakes no obligation to update any forward-looking statements to reflect
events or circumstances after the date of such statements.

                                      ###



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