SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
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240.13d-102
SCHEDULE 13G
INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO
(S)240.13D-1(b), (c) AND (d) AND AMENDMENTS
THERETO FILED PURSUANT TO (S)240.13D-2
(Amendment No. )*
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Sonus Corp.
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(Name of Issuer)
Common Stock
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(Title of Class of Securities)
835691-10-6
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(CUSIP Number)
June 17, 1998
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(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:
[X] Rule 13d-1(b)
[X] Rule 13d-(c)
[ ] Rule 13d-1(d)
*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).
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SCHEDULE 13G
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CUSIP NO. 835691-10-6 Page 2 of 12
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NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
BankAmerica Corporation
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CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [ ]
(b) [ ]
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SEC USE ONLY
3
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CITIZENSHIP OR PLACE OF ORGANIZATION
4 Delaware
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SOLE VOTING POWER
5
NUMBER OF -0-
SHARES -------------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
829,100
OWNED BY
-------------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING -0-
PERSON -------------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
829,100
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AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9 829,100
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CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
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PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11 14.2%
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TYPE OF REPORTING PERSON*
12 HC
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*SEE INSTRUCTION BEFORE FILLING OUT!
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SCHEDULE 13G
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CUSIP NO. 835691-10-6 Page 3 of 12
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NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Robertson Stephens Investment Management Co.
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CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [ ]
(b) [ ]
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SEC USE ONLY
3
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CITIZENSHIP OR PLACE OF ORGANIZATION
4
California
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SOLE VOTING POWER
5
NUMBER OF -0-
SHARES -------------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
829,100
OWNED BY
-------------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING -0-
PERSON -------------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
829,100
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AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9 829,100
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CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
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PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11 14.2%
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TYPE OF REPORTING PERSON*
12 HC
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*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
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SCHEDULE 13G
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CUSIP NO. 835691-10-6 Page 4 of 12
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NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Robertson, Stephens & Company Investment Management, L.P.
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CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [ ]
(b) [ ]
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SEC USE ONLY
3
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CITIZENSHIP OR PLACE OF ORGANIZATION
4
California
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SOLE VOTING POWER
5
NUMBER OF -0-
SHARES -------------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
829,100
OWNED BY
-------------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING -0-
PERSON -------------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
829,100
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AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9 829,100
- --------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
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PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11 14.2%
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TYPE OF REPORTING PERSON*
12 IA
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*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
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SCHEDULE 13G
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CUSIP NO. 835691-10-6 Page 5 of 12
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NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
The Robertson Stephens Orphan Fund, L.P.
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CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [ ]
(b) [ ]
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SEC USE ONLY
3
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CITIZENSHIP OR PLACE OF ORGANIZATION
4
California
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SOLE VOTING POWER
5
NUMBER OF -0-
SHARES -------------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
610,000
OWNED BY
-------------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING -0-
PERSON -------------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
610,000
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AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9 610,000
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CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
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PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11 10.5%
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TYPE OF REPORTING PERSON*
12 PN
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*SEE INSTRUCTION BEFORE FILLING OUT!
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SCHEDULE 13G
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CUSIP NO. 835691-10-6 Page 6 of 12
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Item 1 (a) Name of Issuer: Sonus Corp.
(b) Address of Issuer's 111 S.W. Fifth Avenue, Suite 2390
Principal Executive Portland, OR 97204
Offices:
Item 2 (a) Names of Person Filing: BankAmerica Corporation ("BAC")
Robertson Stephens Investment
Management Co. ("Robertson
Parent")
Robertson, Stephens & Company
Investment Management, L.P.
("Investment Adviser")
The Robertson Stephens Orphan
Fund, L.P. ("Orphan")
(b) Address of Principal See Annex I
Business Offices:
(c) Citizenship: See Annex I
(d) Title of Class of Common Stock
Securities:
(e) CUSIP Number: 835691-10-6
Item 3 If this statement is filed pursuant to Rules 13d-1(b) or 13d-2(b) or
(c), check whether the person filing is a:
(a) [ ] Broker or Dealer registered under Section 15 of the Act
(15 U.S.C. 78o)
(b) [ ] Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c)
(c) [ ] Insurance Company as defined in Section 3(a)(19) of the Act
(15 U.S.C. 78c)
(d) [ ] Investment Company registered under Section 8 of the Investment
Company Act (15 U.S.C. 80a-8)
(e) [X] An investment adviser in accordance with (S)240.13d-1(b)
(1)(ii)(E)
(f) [ ] An employee benefit plan or endowment fund in accordance with
(S)240.13d-1(b)(1)(ii)(F)
(g) [ ] A parent holding company or control person in accordance with
(S)240.13d-1(b)(ii)(G) (Note: See Item 7)
(h) [ ] A savings association as defined in Section 3(b) of the Federal
Deposit Insurance Act (12 U.S.C. 1813)
(i) [ ] A church plan that is excluded from the definition of an
investment company under section 3(c)(14) of the Investment
Company Act of 1940 (15 U.S.C. 80a-3)
(j) [_] Group, in accordance with (S)240.13d-1(b)(1)(ii)(J)
If this statement is filed pursuant to (S)240.13d-1c), check this box. [X]
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SCHEDULE 13G
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CUSIP NO. 835691-10-6 Page 7 of 12
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Item 4 Ownership*
(a) Amount Beneficially Owned:
BAC 829,100
Robertson Parent 829,100
Investment Adviser 829,100
Orphan 610,000
(b) Percent of Class:
BAC 14.2%
Robertson Parent 14.2%
Investment Adviser 14.2%
Orphan 10.5%
(c) Number of shares as to which the person has:
(i) sole power to vote or to direct the vote:
BAC 0
Robertson Parent 0
Investment Adviser 0
Orphan 0
(ii) shared power to vote or to direct the
vote:
BAC 829,100
Robertson Parent 829,100
Investment Adviser 829,100
Orphan 610,000
(iii) sole power to dispose or to direct the
disposition of:
BAC 0
Robertson Parent 0
Investment Adviser 0
Orphan 0
(iv) shared power to dispose or to direct the
disposition of:
BAC 829,100
Robertson Parent 829,100
Investment Adviser 829,100
Orphan 610,000
__________________
* This filing is made pursuant to Rule 13d-1(c) to the extent it represents
acquisitions by BAC, Robertson Parent and Orphan and pursuant to Rule 13d-1(b)
to the extent it represents acquisitions by Investment Adviser. In addition to
the shares held by Orphan, the remaining shares reflected in this report are
held by funds and partnerships sponsored and advised by Investment Adviser.
** By virtue of the corporate relationships between Reporting Persons as
described in Item 7, BAC (the parent company) may be deemed to possess indirect
beneficial ownership of shares beneficially owned directly by its subsidiaries.
Similarly, higher tier BAC subsidiaries may be deemed to possess indirect
beneficial ownership of shares beneficially owned directly by lower tier BAC
subsidiaries. The power to vote and to dispose of shares may be deemed to be
shared between entities due to their corporate relationships.
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SCHEDULE 13G
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CUSIP NO. 835691-10-6 Page 8 of 12
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Item 5 Ownership of Five Percent or Less of a Class.
If this statement is being filed to report the fact that as of the
date hereof the reporting person has ceased to be the beneficial
owner of more than five percent of the class of securities, check
the following [_].
Item 6 Ownership of More than Five Percent on Behalf of Another Person.
Not Applicable.
Item 7 Identification and Classification of the Subsidiaries Which
Acquired the Security Being Reported on by the Parent Holding
Company.
See Annex I.
Item 8 Identification and Classification of Members of the Group.
Not Applicable.
Item 9 Notice of Dissolution of Group.
Not Applicable.
Item 10 Certification.
By signing below I certify that, to the best of my knowledge
and belief, the securities referred to above were acquired and
are held in the ordinary course of business and were not
acquired and are not held for the purpose of or with the
effect of changing or influencing the control of the issuer of
the securities and were not acquired and are not held in
connection with or as a participant in any transaction having
that purpose or effect. (13d-1(b)).
By signing below I certify that, to the best of my knowledge
and belief, the securities referred to above were acquired and
are held in the ordinary course of business and were not
acquired and are not held for the purpose of or with the
effect of changing or influencing the control of the issuer of
the securities and were not acquired and are not held in
connection with or as a participant in any transaction having
that purpose or effect. (13d-1(c)).
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SCHEDULE 13G
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CUSIP NO. 835691-10-6 Page 9 of 12
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SIGNATURE
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After reasonable inquiry and to the best of my knowledge and belief, the
undersigned certify that the information set forth in this statement is true,
complete and correct.
Dated: July 9, 1998
BANKAMERICA CORPORATION*
ROBERTSON STEPHENS INVESTMENT MANAGEMENT CO.*
ROBERTSON, STEPHENS & COMPANY INVESTMENT MANAGEMENT, L.P. *
THE ROBERTSON STEPHENS ORPHAN FUND, L.P.*
*By: /s/ VENRICE R. PALMER
--------------------------
Venrice R. Palmer
Senior Counsel of
Bank of America National Trust and Savings Association
and Authorized Attorney-in-Fact (signing resolutions and
powers of attorney are incorporated by reference to
Schedule 13G Amendment #2 relating to Anaren Mircrowave,
Inc.)
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SCHEDULE 13G
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CUSIP NO. 835691-10-6 Page 10 of 12
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EXHIBIT A
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JOINT FILING AGREEMENT
----------------------
The undersigned hereby agree that they are filing this statement jointly
pursuant to Rule 13d-1(f)(1). Each of them is responsible for the timely filing
of such Schedule 13G and any amendments thereto, and for the completeness and
accuracy of the information concerning such person contained therein; but none
of them is responsible for the completeness or accuracy of the information
concerning the other persons making the filing, unless such person knows or has
reason to believe that such information is inaccurate.
Date: July 9, 1998
BANKAMERICA CORPORATION*
ROBERTSON STEPHENS INVESTMENT MANAGEMENT CO.*
ROBERTSON, STEPHENS & COMPANY INVESTMENT MANAGEMENT, L.P.*
THE ROBERTSON STEPHENS ORPHAN FUND, L.P.*
*By: /s/ VENRICE R. PALMER
---------------------
Venrice R. Palmer
Senior Counsel of
Bank of America National Trust and Savings Association and Authorized
Attorney-in-Fact (signing resolutions and powers of attorney are
incorporated by reference to Schedule 13G Amendment #2 relating to Anaren
Mircrowave, Inc.)
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SCHEDULE 13G
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CUSIP NO. 835691-10-6 Page 11 of 12
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ANNEX I
This Annex identifies certain entities which may be filing parties of the
attached Schedule or which may be referred to in the filing.
Registered Investment Companies
- -------------------------------
Each of the following entities is a series of Robertson Stephens Investment
Trust, a Massachusetts business trust. The investment adviser for each of such
entities is Robertson, Stephens & Company Investment Management, L.P. Each is an
investment company registered under the Investment Company Act of 1940, with
principal office and principal place of business at 555 California Street, Suite
2600, San Francisco, CA 94104:
The Contrarian Fund ("Contrarian")
The Robertson Stephens Developing Countries Fund ("Developing Countries")
The Robertson Stephens Diversified Growth Fund ("Diversified Growth")
The Robertson Stephens Emerging Growth Fund ("Emerging Growth")
The Robertson Stephens Growth & Income Fund ("Growth & Income")
The Information Age Fund (TM) ("Information Age")
The Robertson Stephens Global Natural Resources Fund ("Natural "Resources")
The Robertson Stephens Global Value Fund ("Global Value")
The Robertson Stephens MicroCap Growth Fund ('Micro-Cap Growth")
The Robertson Stephens Partners Fund ("Partners")
The Robertson Stephens Value + Growth Fund ("Value + Growth")
Other Entities
- --------------
The principal office and principal place of business of the following
entities is 555 California Street, Suite 2600, San Francisco, CA 94104:
I. (a) BankAmerica Corporation ("BAC") Bank is a Delaware corporation. It
wholly owns Robertson Parent.
(b) registered bank holding company
II. (a) Bayview Holdings, Inc. ("Bayview Holdings") is a Delaware corpora-
tion. Bayview Holdings a wholly owned subsidiary of Robertson Parent.
It is managing member of Private Equity Group.
(b) holding company
III. (a) Bayview Investors, Ltd. ("Bayview") is a California limited partner-
ship.
(b) investments in securities
IV. (a) The Robertson Stephens Orphan Fund, L.P. is a California limited
partnership. Investment Adviser is the general partner.
(b) investments in securities
V. (a) The Robertson Stephens Orphan Offshore Fund, L.P. ("Orphan Offshore")
is a Cayman Islands limited partnership. Investment Adviser is the
investment adviser.
(b) investment in securities
VI. (a) Robertson Stephens Investment Management Co. ("Robertson Parent") is
a Delaware corporation. It is wholly owned by Bank. It owns Bayview
Holdings.
(b) holding company
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SCHEDULE 13G
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CUSIP NO. 835691-10-6 Page 12 of 12
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VII. (a) Robertson, Stephens & Company Investment Management, L.P.
("Investment Adviser") is a California limited partnership. It is
investment adviser to the Registered Investment Companies and Orphan
Offshore and General partner of Orphan and Emerging Growth Partners.
(b) registered investment advisor
VIII. (a) Robertson, Stephens & Company Private Equity Group, L.L.C. ("Private
Equity Group") is a Delaware limited liability company. It is general
partner of Bayview and Bayview VI. Bayview Holdings is managing
member of Private Equity Group.
(b) holding company
IX. (a) Bayview Investors, Ltd. ("Bayview") is a California limited partner-
ship.
(b) investments in securities
X. (a) Bayview Investors VI, L.P. ("Bayview VI") is a California limited
partnership. It is general partner of Emerging Growth Partners, L.P.
("Emerging Growth Partners"). Private Equity Group is its general
partner.
(b) investments in securities
XI. (a) Robertson Stephens Emerging Growth Partners, L.P. is a California
limited partnership. Bayview VI and Investment Adviser are its
general partners.
(b) investments in securities